./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix036_pso.opt_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/mix036_pso.opt_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/mix036_pso.opt_tso.opt.i ./goblint.2024-05-21_14-57-05.files/protection/mix036_pso.opt_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 19:42:33,014 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-03 19:42:33,080 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-03 19:42:33,083 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-03 19:42:33,083 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-03 19:42:33,100 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-03 19:42:33,103 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-03 19:42:33,103 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-03 19:42:33,104 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-03 19:42:33,107 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-03 19:42:33,107 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-03 19:42:33,107 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-03 19:42:33,108 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-03 19:42:33,109 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-03 19:42:33,109 INFO L153 SettingsManager]: * Use SBE=true [2024-06-03 19:42:33,109 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-03 19:42:33,109 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-03 19:42:33,110 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-03 19:42:33,110 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-03 19:42:33,110 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-03 19:42:33,110 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-03 19:42:33,111 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-03 19:42:33,111 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-03 19:42:33,111 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-03 19:42:33,111 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-03 19:42:33,111 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-03 19:42:33,112 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-03 19:42:33,112 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-03 19:42:33,112 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-03 19:42:33,113 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-03 19:42:33,113 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-03 19:42:33,114 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-03 19:42:33,114 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 19:42:33,114 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-03 19:42:33,114 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-03 19:42:33,114 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-03 19:42:33,115 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-03 19:42:33,115 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-03 19:42:33,115 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-03 19:42:33,115 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-03 19:42:33,115 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-03 19:42:33,116 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-03 19:42:33,116 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-03 19:42:33,116 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-03 19:42:33,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-03 19:42:33,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-03 19:42:33,330 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-03 19:42:33,330 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-03 19:42:33,331 INFO L274 PluginConnector]: CDTParser initialized [2024-06-03 19:42:33,332 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix036_pso.opt_tso.opt.i [2024-06-03 19:42:34,374 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-03 19:42:34,559 INFO L384 CDTParser]: Found 1 translation units. [2024-06-03 19:42:34,559 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix036_pso.opt_tso.opt.i [2024-06-03 19:42:34,569 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79df7c1d5/2dd51d64453043f5820022b4d9a50e8c/FLAG57da4a0de [2024-06-03 19:42:34,584 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79df7c1d5/2dd51d64453043f5820022b4d9a50e8c [2024-06-03 19:42:34,585 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-03 19:42:34,586 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-03 19:42:34,586 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix036_pso.opt_tso.opt.yml/witness.yml [2024-06-03 19:42:34,732 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-03 19:42:34,733 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-03 19:42:34,734 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-03 19:42:34,734 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-03 19:42:34,742 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-03 19:42:34,743 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 07:42:34" (1/2) ... [2024-06-03 19:42:34,743 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ac3e35b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:42:34, skipping insertion in model container [2024-06-03 19:42:34,743 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 07:42:34" (1/2) ... [2024-06-03 19:42:34,745 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@57b9c062 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:42:34, skipping insertion in model container [2024-06-03 19:42:34,745 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:42:34" (2/2) ... [2024-06-03 19:42:34,746 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ac3e35b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:42:34, skipping insertion in model container [2024-06-03 19:42:34,746 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:42:34" (2/2) ... [2024-06-03 19:42:34,746 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-03 19:42:34,851 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-03 19:42:34,853 INFO L97 edCorrectnessWitness]: Location invariant before [L863-L863] ((((((((((((((((((((((((! multithreaded || z$r_buff0_thd2 == (_Bool)0) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= b && b <= 1) && (b == 0 || b == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1))) [2024-06-03 19:42:34,853 INFO L97 edCorrectnessWitness]: Location invariant before [L861-L861] ((((((((((((((((((((((((! multithreaded || z$r_buff0_thd2 == (_Bool)0) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= b && b <= 1) && (b == 0 || b == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1))) [2024-06-03 19:42:34,853 INFO L97 edCorrectnessWitness]: Location invariant before [L865-L865] ((((((((((((((((((((((((! multithreaded || z$r_buff0_thd2 == (_Bool)0) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= b && b <= 1) && (b == 0 || b == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1))) [2024-06-03 19:42:34,853 INFO L97 edCorrectnessWitness]: Location invariant before [L866-L866] ((((((((((((((((((((((((! multithreaded || z$r_buff0_thd2 == (_Bool)0) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= b && b <= 1) && (b == 0 || b == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1))) [2024-06-03 19:42:34,853 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-03 19:42:34,854 INFO L106 edCorrectnessWitness]: ghost_update [L859-L859] multithreaded = 1; [2024-06-03 19:42:34,909 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-03 19:42:35,174 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 19:42:35,185 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 19:42:35,300 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 19:42:35,326 INFO L206 MainTranslator]: Completed translation [2024-06-03 19:42:35,326 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:42:35 WrapperNode [2024-06-03 19:42:35,326 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-03 19:42:35,327 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-03 19:42:35,327 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-03 19:42:35,327 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-03 19:42:35,332 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:42:35" (1/1) ... [2024-06-03 19:42:35,350 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:42:35" (1/1) ... [2024-06-03 19:42:35,385 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 147 [2024-06-03 19:42:35,386 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-03 19:42:35,386 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-03 19:42:35,386 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-03 19:42:35,386 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-03 19:42:35,394 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:42:35" (1/1) ... [2024-06-03 19:42:35,395 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:42:35" (1/1) ... [2024-06-03 19:42:35,398 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:42:35" (1/1) ... [2024-06-03 19:42:35,419 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 19:42:35,420 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:42:35" (1/1) ... [2024-06-03 19:42:35,420 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:42:35" (1/1) ... [2024-06-03 19:42:35,428 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:42:35" (1/1) ... [2024-06-03 19:42:35,429 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:42:35" (1/1) ... [2024-06-03 19:42:35,431 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:42:35" (1/1) ... [2024-06-03 19:42:35,432 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:42:35" (1/1) ... [2024-06-03 19:42:35,435 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-03 19:42:35,436 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-03 19:42:35,436 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-03 19:42:35,436 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-03 19:42:35,437 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:42:35" (1/1) ... [2024-06-03 19:42:35,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 19:42:35,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 19:42:35,468 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 19:42:35,469 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 19:42:35,502 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-03 19:42:35,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-03 19:42:35,503 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-03 19:42:35,503 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-03 19:42:35,503 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-03 19:42:35,504 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-03 19:42:35,504 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-03 19:42:35,504 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-03 19:42:35,504 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-03 19:42:35,505 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-03 19:42:35,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-03 19:42:35,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-03 19:42:35,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-03 19:42:35,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-03 19:42:35,507 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 19:42:35,622 INFO L244 CfgBuilder]: Building ICFG [2024-06-03 19:42:35,624 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-03 19:42:35,912 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-03 19:42:35,912 INFO L293 CfgBuilder]: Performing block encoding [2024-06-03 19:42:36,064 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-03 19:42:36,064 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-03 19:42:36,065 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 07:42:36 BoogieIcfgContainer [2024-06-03 19:42:36,065 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-03 19:42:36,067 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-03 19:42:36,067 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-03 19:42:36,070 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-03 19:42:36,070 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.06 07:42:34" (1/4) ... [2024-06-03 19:42:36,070 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@551928c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 07:42:36, skipping insertion in model container [2024-06-03 19:42:36,070 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:42:34" (2/4) ... [2024-06-03 19:42:36,070 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@551928c8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 07:42:36, skipping insertion in model container [2024-06-03 19:42:36,070 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:42:35" (3/4) ... [2024-06-03 19:42:36,071 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@551928c8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 07:42:36, skipping insertion in model container [2024-06-03 19:42:36,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 07:42:36" (4/4) ... [2024-06-03 19:42:36,071 INFO L112 eAbstractionObserver]: Analyzing ICFG mix036_pso.opt_tso.opt.i [2024-06-03 19:42:36,083 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-03 19:42:36,084 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-03 19:42:36,084 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-03 19:42:36,128 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-03 19:42:36,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 54 transitions, 124 flow [2024-06-03 19:42:36,186 INFO L124 PetriNetUnfolderBase]: 0/50 cut-off events. [2024-06-03 19:42:36,187 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 19:42:36,189 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 83 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 19:42:36,189 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 54 transitions, 124 flow [2024-06-03 19:42:36,193 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 44 transitions, 100 flow [2024-06-03 19:42:36,202 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-03 19:42:36,208 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;@4febda62, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-03 19:42:36,208 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-03 19:42:36,212 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-03 19:42:36,213 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-03 19:42:36,213 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 19:42:36,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:42:36,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-03 19:42:36,214 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 19:42:36,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:42:36,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1070083681, now seen corresponding path program 1 times [2024-06-03 19:42:36,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:42:36,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361295674] [2024-06-03 19:42:36,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:42:36,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:42:36,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:42:37,319 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 19:42:37,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:42:37,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361295674] [2024-06-03 19:42:37,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361295674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:42:37,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:42:37,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-03 19:42:37,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793617725] [2024-06-03 19:42:37,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:42:37,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 19:42:37,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:42:37,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 19:42:37,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-03 19:42:37,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 54 [2024-06-03 19:42:37,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:42:37,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:42:37,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 54 [2024-06-03 19:42:37,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:42:38,249 INFO L124 PetriNetUnfolderBase]: 4867/7180 cut-off events. [2024-06-03 19:42:38,250 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2024-06-03 19:42:38,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14094 conditions, 7180 events. 4867/7180 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 42450 event pairs, 3534 based on Foata normal form. 1/6964 useless extension candidates. Maximal degree in co-relation 14078. Up to 6693 conditions per place. [2024-06-03 19:42:38,325 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 42 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-06-03 19:42:38,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 58 transitions, 231 flow [2024-06-03 19:42:38,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 19:42:38,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 19:42:38,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-06-03 19:42:38,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6481481481481481 [2024-06-03 19:42:38,338 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 100 flow. Second operand 3 states and 105 transitions. [2024-06-03 19:42:38,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 58 transitions, 231 flow [2024-06-03 19:42:38,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 58 transitions, 224 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-03 19:42:38,345 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 135 flow [2024-06-03 19:42:38,347 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 19:42:38,350 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -1 predicate places. [2024-06-03 19:42:38,350 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 135 flow [2024-06-03 19:42:38,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:42:38,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:42:38,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:42:38,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-03 19:42:38,351 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 19:42:38,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:42:38,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1853195010, now seen corresponding path program 1 times [2024-06-03 19:42:38,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:42:38,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489483600] [2024-06-03 19:42:38,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:42:38,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:42:38,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:42:39,081 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 19:42:39,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:42:39,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489483600] [2024-06-03 19:42:39,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489483600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:42:39,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:42:39,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-03 19:42:39,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551388751] [2024-06-03 19:42:39,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:42:39,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-03 19:42:39,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:42:39,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-03 19:42:39,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-03 19:42:39,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 54 [2024-06-03 19:42:39,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 135 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:42:39,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:42:39,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 54 [2024-06-03 19:42:39,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:42:39,960 INFO L124 PetriNetUnfolderBase]: 5569/7978 cut-off events. [2024-06-03 19:42:39,960 INFO L125 PetriNetUnfolderBase]: For 1662/1662 co-relation queries the response was YES. [2024-06-03 19:42:39,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18167 conditions, 7978 events. 5569/7978 cut-off events. For 1662/1662 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 45953 event pairs, 3437 based on Foata normal form. 4/7876 useless extension candidates. Maximal degree in co-relation 18152. Up to 7610 conditions per place. [2024-06-03 19:42:39,999 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 53 selfloop transitions, 9 changer transitions 0/72 dead transitions. [2024-06-03 19:42:39,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 72 transitions, 325 flow [2024-06-03 19:42:39,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 19:42:40,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 19:42:40,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-06-03 19:42:40,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6203703703703703 [2024-06-03 19:42:40,001 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 135 flow. Second operand 4 states and 134 transitions. [2024-06-03 19:42:40,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 72 transitions, 325 flow [2024-06-03 19:42:40,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 72 transitions, 320 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 19:42:40,003 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 183 flow [2024-06-03 19:42:40,003 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 19:42:40,004 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 2 predicate places. [2024-06-03 19:42:40,004 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 183 flow [2024-06-03 19:42:40,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:42:40,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:42:40,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:42:40,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-03 19:42:40,005 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 19:42:40,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:42:40,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1021657993, now seen corresponding path program 1 times [2024-06-03 19:42:40,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:42:40,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158347070] [2024-06-03 19:42:40,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:42:40,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:42:40,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:42:40,867 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 19:42:40,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:42:40,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158347070] [2024-06-03 19:42:40,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158347070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:42:40,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:42:40,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 19:42:40,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122430115] [2024-06-03 19:42:40,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:42:40,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 19:42:40,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:42:40,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 19:42:40,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-03 19:42:40,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 54 [2024-06-03 19:42:40,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 183 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:42:40,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:42:40,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 54 [2024-06-03 19:42:40,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:42:42,055 INFO L124 PetriNetUnfolderBase]: 7070/10054 cut-off events. [2024-06-03 19:42:42,055 INFO L125 PetriNetUnfolderBase]: For 5698/5698 co-relation queries the response was YES. [2024-06-03 19:42:42,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25490 conditions, 10054 events. 7070/10054 cut-off events. For 5698/5698 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 57594 event pairs, 3323 based on Foata normal form. 8/9927 useless extension candidates. Maximal degree in co-relation 25473. Up to 9556 conditions per place. [2024-06-03 19:42:42,098 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 71 selfloop transitions, 16 changer transitions 0/96 dead transitions. [2024-06-03 19:42:42,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 96 transitions, 490 flow [2024-06-03 19:42:42,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:42:42,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:42:42,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2024-06-03 19:42:42,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5771604938271605 [2024-06-03 19:42:42,100 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 183 flow. Second operand 6 states and 187 transitions. [2024-06-03 19:42:42,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 96 transitions, 490 flow [2024-06-03 19:42:42,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 96 transitions, 462 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-03 19:42:42,103 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 245 flow [2024-06-03 19:42:42,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=245, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2024-06-03 19:42:42,104 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 6 predicate places. [2024-06-03 19:42:42,104 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 245 flow [2024-06-03 19:42:42,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:42:42,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:42:42,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:42:42,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-03 19:42:42,105 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:42:42,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:42:42,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1736368985, now seen corresponding path program 1 times [2024-06-03 19:42:42,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:42:42,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787696420] [2024-06-03 19:42:42,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:42:42,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:42:42,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:42:42,852 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 19:42:42,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:42:42,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787696420] [2024-06-03 19:42:42,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787696420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:42:42,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:42:42,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 19:42:42,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155581976] [2024-06-03 19:42:42,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:42:42,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 19:42:42,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:42:42,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 19:42:42,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-03 19:42:42,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 54 [2024-06-03 19:42:42,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 245 flow. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 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 19:42:42,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:42:42,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 54 [2024-06-03 19:42:42,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:42:43,973 INFO L124 PetriNetUnfolderBase]: 6156/9049 cut-off events. [2024-06-03 19:42:43,974 INFO L125 PetriNetUnfolderBase]: For 9447/9447 co-relation queries the response was YES. [2024-06-03 19:42:43,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25092 conditions, 9049 events. 6156/9049 cut-off events. For 9447/9447 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 53531 event pairs, 3157 based on Foata normal form. 3/8934 useless extension candidates. Maximal degree in co-relation 25073. Up to 8408 conditions per place. [2024-06-03 19:42:44,018 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 59 selfloop transitions, 10 changer transitions 0/79 dead transitions. [2024-06-03 19:42:44,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 79 transitions, 449 flow [2024-06-03 19:42:44,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 19:42:44,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 19:42:44,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 141 transitions. [2024-06-03 19:42:44,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5222222222222223 [2024-06-03 19:42:44,020 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 245 flow. Second operand 5 states and 141 transitions. [2024-06-03 19:42:44,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 79 transitions, 449 flow [2024-06-03 19:42:44,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 79 transitions, 411 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-03 19:42:44,024 INFO L231 Difference]: Finished difference. Result has 65 places, 62 transitions, 268 flow [2024-06-03 19:42:44,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=268, PETRI_PLACES=65, PETRI_TRANSITIONS=62} [2024-06-03 19:42:44,025 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 8 predicate places. [2024-06-03 19:42:44,025 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 62 transitions, 268 flow [2024-06-03 19:42:44,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 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 19:42:44,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:42:44,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:42:44,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-03 19:42:44,026 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 19:42:44,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:42:44,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1282553696, now seen corresponding path program 1 times [2024-06-03 19:42:44,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:42:44,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219967362] [2024-06-03 19:42:44,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:42:44,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:42:44,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:42:44,925 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 19:42:44,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:42:44,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219967362] [2024-06-03 19:42:44,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219967362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:42:44,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:42:44,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:42:44,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745936631] [2024-06-03 19:42:44,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:42:44,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:42:44,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:42:44,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:42:44,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:42:45,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-06-03 19:42:45,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 62 transitions, 268 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 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 19:42:45,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:42:45,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-06-03 19:42:45,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:42:46,314 INFO L124 PetriNetUnfolderBase]: 7083/10067 cut-off events. [2024-06-03 19:42:46,315 INFO L125 PetriNetUnfolderBase]: For 16755/16777 co-relation queries the response was YES. [2024-06-03 19:42:46,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30876 conditions, 10067 events. 7083/10067 cut-off events. For 16755/16777 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 57258 event pairs, 3533 based on Foata normal form. 5/9954 useless extension candidates. Maximal degree in co-relation 30855. Up to 9589 conditions per place. [2024-06-03 19:42:46,364 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 70 selfloop transitions, 21 changer transitions 0/100 dead transitions. [2024-06-03 19:42:46,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 100 transitions, 606 flow [2024-06-03 19:42:46,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:42:46,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:42:46,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 171 transitions. [2024-06-03 19:42:46,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-03 19:42:46,366 INFO L175 Difference]: Start difference. First operand has 65 places, 62 transitions, 268 flow. Second operand 6 states and 171 transitions. [2024-06-03 19:42:46,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 100 transitions, 606 flow [2024-06-03 19:42:46,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 100 transitions, 577 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-03 19:42:46,370 INFO L231 Difference]: Finished difference. Result has 68 places, 70 transitions, 356 flow [2024-06-03 19:42:46,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=356, PETRI_PLACES=68, PETRI_TRANSITIONS=70} [2024-06-03 19:42:46,370 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 11 predicate places. [2024-06-03 19:42:46,371 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 70 transitions, 356 flow [2024-06-03 19:42:46,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 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 19:42:46,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:42:46,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:42:46,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-03 19:42:46,371 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 19:42:46,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:42:46,372 INFO L85 PathProgramCache]: Analyzing trace with hash 2118542786, now seen corresponding path program 2 times [2024-06-03 19:42:46,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:42:46,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746958186] [2024-06-03 19:42:46,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:42:46,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:42:46,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:42:47,353 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 19:42:47,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:42:47,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746958186] [2024-06-03 19:42:47,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746958186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:42:47,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:42:47,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:42:47,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107367312] [2024-06-03 19:42:47,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:42:47,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:42:47,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:42:47,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:42:47,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:42:47,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-06-03 19:42:47,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 70 transitions, 356 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 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 19:42:47,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:42:47,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-06-03 19:42:47,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:42:48,706 INFO L124 PetriNetUnfolderBase]: 7074/10070 cut-off events. [2024-06-03 19:42:48,706 INFO L125 PetriNetUnfolderBase]: For 24672/24712 co-relation queries the response was YES. [2024-06-03 19:42:48,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33550 conditions, 10070 events. 7074/10070 cut-off events. For 24672/24712 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 57303 event pairs, 3536 based on Foata normal form. 25/9979 useless extension candidates. Maximal degree in co-relation 33528. Up to 9580 conditions per place. [2024-06-03 19:42:48,761 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 64 selfloop transitions, 21 changer transitions 0/94 dead transitions. [2024-06-03 19:42:48,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 94 transitions, 588 flow [2024-06-03 19:42:48,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:42:48,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:42:48,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 165 transitions. [2024-06-03 19:42:48,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2024-06-03 19:42:48,763 INFO L175 Difference]: Start difference. First operand has 68 places, 70 transitions, 356 flow. Second operand 6 states and 165 transitions. [2024-06-03 19:42:48,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 94 transitions, 588 flow [2024-06-03 19:42:48,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 94 transitions, 542 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-06-03 19:42:48,774 INFO L231 Difference]: Finished difference. Result has 72 places, 70 transitions, 363 flow [2024-06-03 19:42:48,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=363, PETRI_PLACES=72, PETRI_TRANSITIONS=70} [2024-06-03 19:42:48,775 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 15 predicate places. [2024-06-03 19:42:48,775 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 70 transitions, 363 flow [2024-06-03 19:42:48,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 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 19:42:48,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:42:48,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:42:48,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-03 19:42:48,776 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 19:42:48,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:42:48,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1399626554, now seen corresponding path program 1 times [2024-06-03 19:42:48,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:42:48,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364736581] [2024-06-03 19:42:48,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:42:48,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:42:48,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:42:49,702 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 19:42:49,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:42:49,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364736581] [2024-06-03 19:42:49,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364736581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:42:49,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:42:49,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:42:49,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158165673] [2024-06-03 19:42:49,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:42:49,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:42:49,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:42:49,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:42:49,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:42:49,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-06-03 19:42:49,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 70 transitions, 363 flow. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 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 19:42:49,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:42:49,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-06-03 19:42:49,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:42:50,927 INFO L124 PetriNetUnfolderBase]: 7165/10224 cut-off events. [2024-06-03 19:42:50,927 INFO L125 PetriNetUnfolderBase]: For 28403/28441 co-relation queries the response was YES. [2024-06-03 19:42:50,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34440 conditions, 10224 events. 7165/10224 cut-off events. For 28403/28441 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 58079 event pairs, 3526 based on Foata normal form. 7/10115 useless extension candidates. Maximal degree in co-relation 34416. Up to 9682 conditions per place. [2024-06-03 19:42:50,994 INFO L140 encePairwiseOnDemand]: 39/54 looper letters, 88 selfloop transitions, 32 changer transitions 0/129 dead transitions. [2024-06-03 19:42:50,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 129 transitions, 824 flow [2024-06-03 19:42:50,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:42:50,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:42:50,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 222 transitions. [2024-06-03 19:42:50,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2024-06-03 19:42:50,995 INFO L175 Difference]: Start difference. First operand has 72 places, 70 transitions, 363 flow. Second operand 8 states and 222 transitions. [2024-06-03 19:42:50,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 129 transitions, 824 flow [2024-06-03 19:42:51,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 129 transitions, 750 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-03 19:42:51,013 INFO L231 Difference]: Finished difference. Result has 76 places, 89 transitions, 515 flow [2024-06-03 19:42:51,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=515, PETRI_PLACES=76, PETRI_TRANSITIONS=89} [2024-06-03 19:42:51,014 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 19 predicate places. [2024-06-03 19:42:51,014 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 89 transitions, 515 flow [2024-06-03 19:42:51,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 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 19:42:51,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:42:51,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:42:51,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-03 19:42:51,015 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 19:42:51,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:42:51,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1104340482, now seen corresponding path program 2 times [2024-06-03 19:42:51,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:42:51,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307370194] [2024-06-03 19:42:51,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:42:51,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:42:51,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:42:52,115 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 19:42:52,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:42:52,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307370194] [2024-06-03 19:42:52,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307370194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:42:52,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:42:52,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:42:52,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036978190] [2024-06-03 19:42:52,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:42:52,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:42:52,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:42:52,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:42:52,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:42:52,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-06-03 19:42:52,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 89 transitions, 515 flow. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 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 19:42:52,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:42:52,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-06-03 19:42:52,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:42:53,537 INFO L124 PetriNetUnfolderBase]: 7187/10257 cut-off events. [2024-06-03 19:42:53,537 INFO L125 PetriNetUnfolderBase]: For 38852/38916 co-relation queries the response was YES. [2024-06-03 19:42:53,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37466 conditions, 10257 events. 7187/10257 cut-off events. For 38852/38916 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 58405 event pairs, 3508 based on Foata normal form. 11/10150 useless extension candidates. Maximal degree in co-relation 37440. Up to 9689 conditions per place. [2024-06-03 19:42:53,584 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 88 selfloop transitions, 34 changer transitions 0/131 dead transitions. [2024-06-03 19:42:53,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 131 transitions, 929 flow [2024-06-03 19:42:53,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:42:53,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:42:53,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 195 transitions. [2024-06-03 19:42:53,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5158730158730159 [2024-06-03 19:42:53,585 INFO L175 Difference]: Start difference. First operand has 76 places, 89 transitions, 515 flow. Second operand 7 states and 195 transitions. [2024-06-03 19:42:53,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 131 transitions, 929 flow [2024-06-03 19:42:53,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 131 transitions, 871 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-03 19:42:53,601 INFO L231 Difference]: Finished difference. Result has 80 places, 93 transitions, 592 flow [2024-06-03 19:42:53,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=592, PETRI_PLACES=80, PETRI_TRANSITIONS=93} [2024-06-03 19:42:53,602 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 23 predicate places. [2024-06-03 19:42:53,602 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 93 transitions, 592 flow [2024-06-03 19:42:53,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 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 19:42:53,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:42:53,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:42:53,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-03 19:42:53,603 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 19:42:53,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:42:53,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1223389652, now seen corresponding path program 3 times [2024-06-03 19:42:53,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:42:53,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416589122] [2024-06-03 19:42:53,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:42:53,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:42:53,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:42:54,587 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 19:42:54,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:42:54,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416589122] [2024-06-03 19:42:54,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416589122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:42:54,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:42:54,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:42:54,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613911130] [2024-06-03 19:42:54,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:42:54,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:42:54,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:42:54,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:42:54,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:42:54,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-06-03 19:42:54,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 93 transitions, 592 flow. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 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 19:42:54,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:42:54,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-06-03 19:42:54,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:42:56,087 INFO L124 PetriNetUnfolderBase]: 7209/10284 cut-off events. [2024-06-03 19:42:56,088 INFO L125 PetriNetUnfolderBase]: For 50665/50723 co-relation queries the response was YES. [2024-06-03 19:42:56,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40341 conditions, 10284 events. 7209/10284 cut-off events. For 50665/50723 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 58663 event pairs, 3397 based on Foata normal form. 21/10189 useless extension candidates. Maximal degree in co-relation 40314. Up to 9633 conditions per place. [2024-06-03 19:42:56,140 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 78 selfloop transitions, 50 changer transitions 0/137 dead transitions. [2024-06-03 19:42:56,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 137 transitions, 1106 flow [2024-06-03 19:42:56,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:42:56,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:42:56,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 199 transitions. [2024-06-03 19:42:56,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5264550264550265 [2024-06-03 19:42:56,141 INFO L175 Difference]: Start difference. First operand has 80 places, 93 transitions, 592 flow. Second operand 7 states and 199 transitions. [2024-06-03 19:42:56,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 137 transitions, 1106 flow [2024-06-03 19:42:56,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 137 transitions, 987 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-03 19:42:56,167 INFO L231 Difference]: Finished difference. Result has 82 places, 101 transitions, 698 flow [2024-06-03 19:42:56,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=698, PETRI_PLACES=82, PETRI_TRANSITIONS=101} [2024-06-03 19:42:56,168 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 25 predicate places. [2024-06-03 19:42:56,168 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 101 transitions, 698 flow [2024-06-03 19:42:56,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 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 19:42:56,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:42:56,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:42:56,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-03 19:42:56,169 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 19:42:56,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:42:56,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1250318466, now seen corresponding path program 4 times [2024-06-03 19:42:56,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:42:56,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764412450] [2024-06-03 19:42:56,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:42:56,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:42:56,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:42:57,099 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 19:42:57,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:42:57,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764412450] [2024-06-03 19:42:57,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764412450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:42:57,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:42:57,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:42:57,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612346807] [2024-06-03 19:42:57,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:42:57,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:42:57,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:42:57,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:42:57,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:42:57,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-06-03 19:42:57,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 101 transitions, 698 flow. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 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 19:42:57,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:42:57,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-06-03 19:42:57,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:42:58,755 INFO L124 PetriNetUnfolderBase]: 7200/10285 cut-off events. [2024-06-03 19:42:58,755 INFO L125 PetriNetUnfolderBase]: For 51627/51685 co-relation queries the response was YES. [2024-06-03 19:42:58,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40286 conditions, 10285 events. 7200/10285 cut-off events. For 51627/51685 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 58782 event pairs, 3404 based on Foata normal form. 19/10189 useless extension candidates. Maximal degree in co-relation 40258. Up to 9624 conditions per place. [2024-06-03 19:42:58,812 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 73 selfloop transitions, 50 changer transitions 0/132 dead transitions. [2024-06-03 19:42:58,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 132 transitions, 1042 flow [2024-06-03 19:42:58,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:42:58,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:42:58,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 193 transitions. [2024-06-03 19:42:58,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5105820105820106 [2024-06-03 19:42:58,814 INFO L175 Difference]: Start difference. First operand has 82 places, 101 transitions, 698 flow. Second operand 7 states and 193 transitions. [2024-06-03 19:42:58,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 132 transitions, 1042 flow [2024-06-03 19:42:58,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 132 transitions, 959 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-03 19:42:58,843 INFO L231 Difference]: Finished difference. Result has 86 places, 101 transitions, 726 flow [2024-06-03 19:42:58,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=726, PETRI_PLACES=86, PETRI_TRANSITIONS=101} [2024-06-03 19:42:58,844 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 29 predicate places. [2024-06-03 19:42:58,844 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 101 transitions, 726 flow [2024-06-03 19:42:58,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 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 19:42:58,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:42:58,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:42:58,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-03 19:42:58,845 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 19:42:58,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:42:58,845 INFO L85 PathProgramCache]: Analyzing trace with hash 419395830, now seen corresponding path program 1 times [2024-06-03 19:42:58,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:42:58,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312993700] [2024-06-03 19:42:58,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:42:58,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:42:58,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:42:59,848 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 19:42:59,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:42:59,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312993700] [2024-06-03 19:42:59,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312993700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:42:59,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:42:59,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:42:59,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661438142] [2024-06-03 19:42:59,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:42:59,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:42:59,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:42:59,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:42:59,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:42:59,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-06-03 19:42:59,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 101 transitions, 726 flow. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 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 19:42:59,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:42:59,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-06-03 19:42:59,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:43:01,419 INFO L124 PetriNetUnfolderBase]: 8032/11720 cut-off events. [2024-06-03 19:43:01,419 INFO L125 PetriNetUnfolderBase]: For 62101/62103 co-relation queries the response was YES. [2024-06-03 19:43:01,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45198 conditions, 11720 events. 8032/11720 cut-off events. For 62101/62103 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 68105 event pairs, 3728 based on Foata normal form. 6/11588 useless extension candidates. Maximal degree in co-relation 45168. Up to 10879 conditions per place. [2024-06-03 19:43:01,489 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 114 selfloop transitions, 17 changer transitions 0/140 dead transitions. [2024-06-03 19:43:01,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 140 transitions, 1153 flow [2024-06-03 19:43:01,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:43:01,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:43:01,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 189 transitions. [2024-06-03 19:43:01,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-03 19:43:01,491 INFO L175 Difference]: Start difference. First operand has 86 places, 101 transitions, 726 flow. Second operand 7 states and 189 transitions. [2024-06-03 19:43:01,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 140 transitions, 1153 flow [2024-06-03 19:43:01,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 140 transitions, 1012 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-03 19:43:01,528 INFO L231 Difference]: Finished difference. Result has 88 places, 108 transitions, 707 flow [2024-06-03 19:43:01,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=707, PETRI_PLACES=88, PETRI_TRANSITIONS=108} [2024-06-03 19:43:01,529 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 31 predicate places. [2024-06-03 19:43:01,529 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 108 transitions, 707 flow [2024-06-03 19:43:01,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 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 19:43:01,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:43:01,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:43:01,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-03 19:43:01,530 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:43:01,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:43:01,530 INFO L85 PathProgramCache]: Analyzing trace with hash 130285494, now seen corresponding path program 1 times [2024-06-03 19:43:01,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:43:01,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098322677] [2024-06-03 19:43:01,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:43:01,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:43:01,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:43:02,259 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 19:43:02,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:43:02,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098322677] [2024-06-03 19:43:02,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098322677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:43:02,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:43:02,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 19:43:02,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470786305] [2024-06-03 19:43:02,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:43:02,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 19:43:02,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:43:02,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 19:43:02,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-03 19:43:02,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 54 [2024-06-03 19:43:02,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 108 transitions, 707 flow. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 19:43:02,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:43:02,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 54 [2024-06-03 19:43:02,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:43:03,514 INFO L124 PetriNetUnfolderBase]: 7529/11376 cut-off events. [2024-06-03 19:43:03,515 INFO L125 PetriNetUnfolderBase]: For 72627/72644 co-relation queries the response was YES. [2024-06-03 19:43:03,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46033 conditions, 11376 events. 7529/11376 cut-off events. For 72627/72644 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 69882 event pairs, 3781 based on Foata normal form. 19/11347 useless extension candidates. Maximal degree in co-relation 46001. Up to 10255 conditions per place. [2024-06-03 19:43:03,582 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 103 selfloop transitions, 10 changer transitions 0/127 dead transitions. [2024-06-03 19:43:03,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 127 transitions, 1015 flow [2024-06-03 19:43:03,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 19:43:03,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 19:43:03,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 138 transitions. [2024-06-03 19:43:03,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2024-06-03 19:43:03,584 INFO L175 Difference]: Start difference. First operand has 88 places, 108 transitions, 707 flow. Second operand 5 states and 138 transitions. [2024-06-03 19:43:03,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 127 transitions, 1015 flow [2024-06-03 19:43:03,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 127 transitions, 955 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-03 19:43:03,642 INFO L231 Difference]: Finished difference. Result has 89 places, 112 transitions, 720 flow [2024-06-03 19:43:03,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=647, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=720, PETRI_PLACES=89, PETRI_TRANSITIONS=112} [2024-06-03 19:43:03,643 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 32 predicate places. [2024-06-03 19:43:03,643 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 112 transitions, 720 flow [2024-06-03 19:43:03,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 19:43:03,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:43:03,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:43:03,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-03 19:43:03,644 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 19:43:03,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:43:03,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1261681359, now seen corresponding path program 1 times [2024-06-03 19:43:03,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:43:03,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811164497] [2024-06-03 19:43:03,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:43:03,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:43:03,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:43:04,742 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 19:43:04,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:43:04,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811164497] [2024-06-03 19:43:04,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811164497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:43:04,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:43:04,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:43:04,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409263527] [2024-06-03 19:43:04,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:43:04,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:43:04,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:43:04,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:43:04,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:43:04,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-06-03 19:43:04,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 112 transitions, 720 flow. Second operand has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 9 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:43:04,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:43:04,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-06-03 19:43:04,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:43:06,591 INFO L124 PetriNetUnfolderBase]: 9141/13106 cut-off events. [2024-06-03 19:43:06,591 INFO L125 PetriNetUnfolderBase]: For 108474/108546 co-relation queries the response was YES. [2024-06-03 19:43:06,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58759 conditions, 13106 events. 9141/13106 cut-off events. For 108474/108546 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 76972 event pairs, 3609 based on Foata normal form. 42/13091 useless extension candidates. Maximal degree in co-relation 58726. Up to 11961 conditions per place. [2024-06-03 19:43:06,692 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 127 selfloop transitions, 41 changer transitions 0/178 dead transitions. [2024-06-03 19:43:06,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 178 transitions, 1410 flow [2024-06-03 19:43:06,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:43:06,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:43:06,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 254 transitions. [2024-06-03 19:43:06,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.522633744855967 [2024-06-03 19:43:06,694 INFO L175 Difference]: Start difference. First operand has 89 places, 112 transitions, 720 flow. Second operand 9 states and 254 transitions. [2024-06-03 19:43:06,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 178 transitions, 1410 flow [2024-06-03 19:43:06,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 178 transitions, 1367 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-03 19:43:06,751 INFO L231 Difference]: Finished difference. Result has 95 places, 116 transitions, 848 flow [2024-06-03 19:43:06,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=848, PETRI_PLACES=95, PETRI_TRANSITIONS=116} [2024-06-03 19:43:06,751 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 38 predicate places. [2024-06-03 19:43:06,751 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 116 transitions, 848 flow [2024-06-03 19:43:06,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 9 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:43:06,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:43:06,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:43:06,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-03 19:43:06,752 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:43:06,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:43:06,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1258824399, now seen corresponding path program 2 times [2024-06-03 19:43:06,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:43:06,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644958207] [2024-06-03 19:43:06,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:43:06,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:43:06,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:43:07,923 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 19:43:07,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:43:07,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644958207] [2024-06-03 19:43:07,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644958207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:43:07,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:43:07,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:43:07,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035750706] [2024-06-03 19:43:07,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:43:07,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:43:07,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:43:07,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:43:07,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:43:08,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-06-03 19:43:08,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 116 transitions, 848 flow. Second operand has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 9 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:43:08,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:43:08,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-06-03 19:43:08,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:43:09,661 INFO L124 PetriNetUnfolderBase]: 9087/13028 cut-off events. [2024-06-03 19:43:09,661 INFO L125 PetriNetUnfolderBase]: For 124201/124265 co-relation queries the response was YES. [2024-06-03 19:43:09,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60150 conditions, 13028 events. 9087/13028 cut-off events. For 124201/124265 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 76401 event pairs, 4109 based on Foata normal form. 48/13019 useless extension candidates. Maximal degree in co-relation 60116. Up to 12111 conditions per place. [2024-06-03 19:43:09,747 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 119 selfloop transitions, 36 changer transitions 0/165 dead transitions. [2024-06-03 19:43:09,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 165 transitions, 1330 flow [2024-06-03 19:43:09,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:43:09,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:43:09,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 223 transitions. [2024-06-03 19:43:09,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5162037037037037 [2024-06-03 19:43:09,749 INFO L175 Difference]: Start difference. First operand has 95 places, 116 transitions, 848 flow. Second operand 8 states and 223 transitions. [2024-06-03 19:43:09,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 165 transitions, 1330 flow [2024-06-03 19:43:09,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 165 transitions, 1261 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-03 19:43:09,828 INFO L231 Difference]: Finished difference. Result has 98 places, 116 transitions, 863 flow [2024-06-03 19:43:09,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=779, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=863, PETRI_PLACES=98, PETRI_TRANSITIONS=116} [2024-06-03 19:43:09,829 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 41 predicate places. [2024-06-03 19:43:09,829 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 116 transitions, 863 flow [2024-06-03 19:43:09,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 9 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:43:09,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:43:09,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:43:09,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-03 19:43:09,829 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 19:43:09,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:43:09,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1143533229, now seen corresponding path program 3 times [2024-06-03 19:43:09,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:43:09,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991617968] [2024-06-03 19:43:09,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:43:09,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:43:09,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:43:10,893 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 19:43:10,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:43:10,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991617968] [2024-06-03 19:43:10,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991617968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:43:10,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:43:10,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:43:10,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407809520] [2024-06-03 19:43:10,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:43:10,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:43:10,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:43:10,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:43:10,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:43:11,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-06-03 19:43:11,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 116 transitions, 863 flow. Second operand has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 9 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:43:11,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:43:11,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-06-03 19:43:11,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:43:12,689 INFO L124 PetriNetUnfolderBase]: 9215/13221 cut-off events. [2024-06-03 19:43:12,689 INFO L125 PetriNetUnfolderBase]: For 137851/137909 co-relation queries the response was YES. [2024-06-03 19:43:12,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62124 conditions, 13221 events. 9215/13221 cut-off events. For 137851/137909 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 77864 event pairs, 4159 based on Foata normal form. 56/13217 useless extension candidates. Maximal degree in co-relation 62088. Up to 12228 conditions per place. [2024-06-03 19:43:12,778 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 97 selfloop transitions, 55 changer transitions 0/162 dead transitions. [2024-06-03 19:43:12,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 162 transitions, 1357 flow [2024-06-03 19:43:12,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:43:12,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:43:12,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 224 transitions. [2024-06-03 19:43:12,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-06-03 19:43:12,780 INFO L175 Difference]: Start difference. First operand has 98 places, 116 transitions, 863 flow. Second operand 8 states and 224 transitions. [2024-06-03 19:43:12,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 162 transitions, 1357 flow [2024-06-03 19:43:12,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 162 transitions, 1275 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-03 19:43:12,863 INFO L231 Difference]: Finished difference. Result has 99 places, 118 transitions, 947 flow [2024-06-03 19:43:12,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=781, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=947, PETRI_PLACES=99, PETRI_TRANSITIONS=118} [2024-06-03 19:43:12,864 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 42 predicate places. [2024-06-03 19:43:12,864 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 118 transitions, 947 flow [2024-06-03 19:43:12,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 9 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:43:12,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:43:12,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:43:12,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-03 19:43:12,865 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 19:43:12,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:43:12,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1143348531, now seen corresponding path program 1 times [2024-06-03 19:43:12,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:43:12,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722037243] [2024-06-03 19:43:12,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:43:12,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:43:12,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:43:13,971 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 19:43:13,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:43:13,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722037243] [2024-06-03 19:43:13,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722037243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:43:13,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:43:13,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:43:13,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229902764] [2024-06-03 19:43:13,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:43:13,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:43:13,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:43:13,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:43:13,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:43:14,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-06-03 19:43:14,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 118 transitions, 947 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:43:14,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:43:14,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-06-03 19:43:14,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:43:15,901 INFO L124 PetriNetUnfolderBase]: 9660/13717 cut-off events. [2024-06-03 19:43:15,901 INFO L125 PetriNetUnfolderBase]: For 154643/154651 co-relation queries the response was YES. [2024-06-03 19:43:15,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65121 conditions, 13717 events. 9660/13717 cut-off events. For 154643/154651 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 77745 event pairs, 4176 based on Foata normal form. 14/13703 useless extension candidates. Maximal degree in co-relation 65084. Up to 13013 conditions per place. [2024-06-03 19:43:15,980 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 127 selfloop transitions, 35 changer transitions 0/170 dead transitions. [2024-06-03 19:43:15,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 170 transitions, 1500 flow [2024-06-03 19:43:15,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:43:15,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:43:15,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-06-03 19:43:15,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4976851851851852 [2024-06-03 19:43:15,982 INFO L175 Difference]: Start difference. First operand has 99 places, 118 transitions, 947 flow. Second operand 8 states and 215 transitions. [2024-06-03 19:43:15,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 170 transitions, 1500 flow [2024-06-03 19:43:16,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 170 transitions, 1370 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-03 19:43:16,076 INFO L231 Difference]: Finished difference. Result has 102 places, 125 transitions, 990 flow [2024-06-03 19:43:16,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=823, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=990, PETRI_PLACES=102, PETRI_TRANSITIONS=125} [2024-06-03 19:43:16,076 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 45 predicate places. [2024-06-03 19:43:16,076 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 125 transitions, 990 flow [2024-06-03 19:43:16,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:43:16,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:43:16,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:43:16,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-03 19:43:16,077 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:43:16,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:43:16,079 INFO L85 PathProgramCache]: Analyzing trace with hash -635541903, now seen corresponding path program 1 times [2024-06-03 19:43:16,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:43:16,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471946835] [2024-06-03 19:43:16,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:43:16,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:43:16,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:43:16,902 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 19:43:16,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:43:16,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471946835] [2024-06-03 19:43:16,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471946835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:43:16,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:43:16,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:43:16,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057659637] [2024-06-03 19:43:16,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:43:16,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:43:16,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:43:16,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:43:16,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:43:16,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-06-03 19:43:16,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 125 transitions, 990 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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 19:43:16,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:43:16,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-06-03 19:43:16,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:43:18,580 INFO L124 PetriNetUnfolderBase]: 9185/13313 cut-off events. [2024-06-03 19:43:18,581 INFO L125 PetriNetUnfolderBase]: For 176557/176577 co-relation queries the response was YES. [2024-06-03 19:43:18,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65893 conditions, 13313 events. 9185/13313 cut-off events. For 176557/176577 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 78312 event pairs, 4117 based on Foata normal form. 26/13230 useless extension candidates. Maximal degree in co-relation 65854. Up to 12334 conditions per place. [2024-06-03 19:43:18,666 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 111 selfloop transitions, 35 changer transitions 0/161 dead transitions. [2024-06-03 19:43:18,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 161 transitions, 1520 flow [2024-06-03 19:43:18,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:43:18,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:43:18,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 169 transitions. [2024-06-03 19:43:18,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5216049382716049 [2024-06-03 19:43:18,667 INFO L175 Difference]: Start difference. First operand has 102 places, 125 transitions, 990 flow. Second operand 6 states and 169 transitions. [2024-06-03 19:43:18,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 161 transitions, 1520 flow [2024-06-03 19:43:18,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 161 transitions, 1410 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-03 19:43:18,756 INFO L231 Difference]: Finished difference. Result has 103 places, 133 transitions, 1067 flow [2024-06-03 19:43:18,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=880, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1067, PETRI_PLACES=103, PETRI_TRANSITIONS=133} [2024-06-03 19:43:18,757 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 46 predicate places. [2024-06-03 19:43:18,757 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 133 transitions, 1067 flow [2024-06-03 19:43:18,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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 19:43:18,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:43:18,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:43:18,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-03 19:43:18,757 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:43:18,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:43:18,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1779776051, now seen corresponding path program 4 times [2024-06-03 19:43:18,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:43:18,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795120772] [2024-06-03 19:43:18,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:43:18,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:43:18,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:43:19,805 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 19:43:19,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:43:19,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795120772] [2024-06-03 19:43:19,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795120772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:43:19,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:43:19,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:43:19,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189235784] [2024-06-03 19:43:19,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:43:19,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:43:19,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:43:19,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:43:19,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:43:19,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-06-03 19:43:19,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 133 transitions, 1067 flow. Second operand has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 9 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:43:19,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:43:19,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-06-03 19:43:19,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:43:21,665 INFO L124 PetriNetUnfolderBase]: 9338/13469 cut-off events. [2024-06-03 19:43:21,665 INFO L125 PetriNetUnfolderBase]: For 202626/202668 co-relation queries the response was YES. [2024-06-03 19:43:21,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70236 conditions, 13469 events. 9338/13469 cut-off events. For 202626/202668 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 79378 event pairs, 3799 based on Foata normal form. 56/13445 useless extension candidates. Maximal degree in co-relation 70196. Up to 12423 conditions per place. [2024-06-03 19:43:21,768 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 109 selfloop transitions, 57 changer transitions 0/177 dead transitions. [2024-06-03 19:43:21,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 177 transitions, 1595 flow [2024-06-03 19:43:21,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:43:21,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:43:21,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 221 transitions. [2024-06-03 19:43:21,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5115740740740741 [2024-06-03 19:43:21,770 INFO L175 Difference]: Start difference. First operand has 103 places, 133 transitions, 1067 flow. Second operand 8 states and 221 transitions. [2024-06-03 19:43:21,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 177 transitions, 1595 flow [2024-06-03 19:43:21,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 177 transitions, 1549 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-06-03 19:43:21,899 INFO L231 Difference]: Finished difference. Result has 109 places, 135 transitions, 1201 flow [2024-06-03 19:43:21,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1021, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1201, PETRI_PLACES=109, PETRI_TRANSITIONS=135} [2024-06-03 19:43:21,900 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 52 predicate places. [2024-06-03 19:43:21,900 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 135 transitions, 1201 flow [2024-06-03 19:43:21,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 9 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:43:21,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:43:21,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:43:21,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-03 19:43:21,900 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 19:43:21,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:43:21,901 INFO L85 PathProgramCache]: Analyzing trace with hash -923957897, now seen corresponding path program 2 times [2024-06-03 19:43:21,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:43:21,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860052520] [2024-06-03 19:43:21,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:43:21,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:43:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:43:22,947 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 19:43:22,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:43:22,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860052520] [2024-06-03 19:43:22,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860052520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:43:22,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:43:22,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:43:22,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168868108] [2024-06-03 19:43:22,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:43:22,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:43:22,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:43:22,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:43:22,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:43:23,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-06-03 19:43:23,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 135 transitions, 1201 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:43:23,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:43:23,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-06-03 19:43:23,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:43:24,824 INFO L124 PetriNetUnfolderBase]: 9844/14084 cut-off events. [2024-06-03 19:43:24,824 INFO L125 PetriNetUnfolderBase]: For 226347/226361 co-relation queries the response was YES. [2024-06-03 19:43:24,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74369 conditions, 14084 events. 9844/14084 cut-off events. For 226347/226361 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 80467 event pairs, 4180 based on Foata normal form. 20/14025 useless extension candidates. Maximal degree in co-relation 74327. Up to 13270 conditions per place. [2024-06-03 19:43:24,927 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 138 selfloop transitions, 39 changer transitions 0/185 dead transitions. [2024-06-03 19:43:24,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 185 transitions, 1796 flow [2024-06-03 19:43:24,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:43:24,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:43:24,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-06-03 19:43:24,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49074074074074076 [2024-06-03 19:43:24,937 INFO L175 Difference]: Start difference. First operand has 109 places, 135 transitions, 1201 flow. Second operand 8 states and 212 transitions. [2024-06-03 19:43:24,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 185 transitions, 1796 flow [2024-06-03 19:43:25,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 185 transitions, 1652 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-03 19:43:25,086 INFO L231 Difference]: Finished difference. Result has 112 places, 143 transitions, 1261 flow [2024-06-03 19:43:25,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1065, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1261, PETRI_PLACES=112, PETRI_TRANSITIONS=143} [2024-06-03 19:43:25,087 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 55 predicate places. [2024-06-03 19:43:25,087 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 143 transitions, 1261 flow [2024-06-03 19:43:25,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:43:25,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:43:25,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:43:25,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-03 19:43:25,088 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 19:43:25,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:43:25,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1039237749, now seen corresponding path program 3 times [2024-06-03 19:43:25,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:43:25,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340385268] [2024-06-03 19:43:25,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:43:25,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:43:25,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:43:26,172 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 19:43:26,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:43:26,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340385268] [2024-06-03 19:43:26,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340385268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:43:26,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:43:26,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:43:26,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178926703] [2024-06-03 19:43:26,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:43:26,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:43:26,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:43:26,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:43:26,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:43:26,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-06-03 19:43:26,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 143 transitions, 1261 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:43:26,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:43:26,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-06-03 19:43:26,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:43:28,118 INFO L124 PetriNetUnfolderBase]: 9880/14152 cut-off events. [2024-06-03 19:43:28,118 INFO L125 PetriNetUnfolderBase]: For 250953/250967 co-relation queries the response was YES. [2024-06-03 19:43:28,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77269 conditions, 14152 events. 9880/14152 cut-off events. For 250953/250967 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 81095 event pairs, 4204 based on Foata normal form. 20/14093 useless extension candidates. Maximal degree in co-relation 77225. Up to 13322 conditions per place. [2024-06-03 19:43:28,237 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 140 selfloop transitions, 43 changer transitions 0/191 dead transitions. [2024-06-03 19:43:28,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 191 transitions, 1863 flow [2024-06-03 19:43:28,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:43:28,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:43:28,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-06-03 19:43:28,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48842592592592593 [2024-06-03 19:43:28,238 INFO L175 Difference]: Start difference. First operand has 112 places, 143 transitions, 1261 flow. Second operand 8 states and 211 transitions. [2024-06-03 19:43:28,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 191 transitions, 1863 flow [2024-06-03 19:43:28,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 191 transitions, 1725 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-03 19:43:28,406 INFO L231 Difference]: Finished difference. Result has 115 places, 149 transitions, 1321 flow [2024-06-03 19:43:28,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1129, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1321, PETRI_PLACES=115, PETRI_TRANSITIONS=149} [2024-06-03 19:43:28,407 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 58 predicate places. [2024-06-03 19:43:28,407 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 149 transitions, 1321 flow [2024-06-03 19:43:28,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:43:28,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:43:28,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:43:28,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-03 19:43:28,407 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 19:43:28,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:43:28,408 INFO L85 PathProgramCache]: Analyzing trace with hash -687485867, now seen corresponding path program 4 times [2024-06-03 19:43:28,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:43:28,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617661004] [2024-06-03 19:43:28,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:43:28,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:43:28,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:43:29,453 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 19:43:29,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:43:29,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617661004] [2024-06-03 19:43:29,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617661004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:43:29,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:43:29,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:43:29,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945564407] [2024-06-03 19:43:29,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:43:29,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:43:29,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:43:29,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:43:29,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:43:29,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-06-03 19:43:29,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 149 transitions, 1321 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:43:29,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:43:29,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-06-03 19:43:29,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:43:31,504 INFO L124 PetriNetUnfolderBase]: 9865/14115 cut-off events. [2024-06-03 19:43:31,504 INFO L125 PetriNetUnfolderBase]: For 276301/276315 co-relation queries the response was YES. [2024-06-03 19:43:31,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79224 conditions, 14115 events. 9865/14115 cut-off events. For 276301/276315 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 80671 event pairs, 3908 based on Foata normal form. 20/14056 useless extension candidates. Maximal degree in co-relation 79179. Up to 13173 conditions per place. [2024-06-03 19:43:31,597 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 133 selfloop transitions, 54 changer transitions 0/195 dead transitions. [2024-06-03 19:43:31,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 195 transitions, 1911 flow [2024-06-03 19:43:31,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:43:31,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:43:31,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-06-03 19:43:31,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49074074074074076 [2024-06-03 19:43:31,598 INFO L175 Difference]: Start difference. First operand has 115 places, 149 transitions, 1321 flow. Second operand 8 states and 212 transitions. [2024-06-03 19:43:31,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 195 transitions, 1911 flow [2024-06-03 19:43:31,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 195 transitions, 1786 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-06-03 19:43:31,738 INFO L231 Difference]: Finished difference. Result has 119 places, 152 transitions, 1394 flow [2024-06-03 19:43:31,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1196, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1394, PETRI_PLACES=119, PETRI_TRANSITIONS=152} [2024-06-03 19:43:31,739 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 62 predicate places. [2024-06-03 19:43:31,739 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 152 transitions, 1394 flow [2024-06-03 19:43:31,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:43:31,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:43:31,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:43:31,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-03 19:43:31,739 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 19:43:31,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:43:31,740 INFO L85 PathProgramCache]: Analyzing trace with hash -624114063, now seen corresponding path program 2 times [2024-06-03 19:43:31,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:43:31,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358903903] [2024-06-03 19:43:31,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:43:31,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:43:31,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:43:32,559 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 19:43:32,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:43:32,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358903903] [2024-06-03 19:43:32,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358903903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:43:32,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:43:32,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:43:32,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331000719] [2024-06-03 19:43:32,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:43:32,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:43:32,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:43:32,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:43:32,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:43:32,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-06-03 19:43:32,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 152 transitions, 1394 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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 19:43:32,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:43:32,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-06-03 19:43:32,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:43:34,320 INFO L124 PetriNetUnfolderBase]: 9301/13496 cut-off events. [2024-06-03 19:43:34,320 INFO L125 PetriNetUnfolderBase]: For 298712/298727 co-relation queries the response was YES. [2024-06-03 19:43:34,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77571 conditions, 13496 events. 9301/13496 cut-off events. For 298712/298727 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 79129 event pairs, 4089 based on Foata normal form. 22/13411 useless extension candidates. Maximal degree in co-relation 77525. Up to 12510 conditions per place. [2024-06-03 19:43:34,425 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 117 selfloop transitions, 35 changer transitions 0/172 dead transitions. [2024-06-03 19:43:34,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 172 transitions, 1758 flow [2024-06-03 19:43:34,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:43:34,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:43:34,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 160 transitions. [2024-06-03 19:43:34,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49382716049382713 [2024-06-03 19:43:34,441 INFO L175 Difference]: Start difference. First operand has 119 places, 152 transitions, 1394 flow. Second operand 6 states and 160 transitions. [2024-06-03 19:43:34,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 172 transitions, 1758 flow [2024-06-03 19:43:34,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 172 transitions, 1562 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-06-03 19:43:34,619 INFO L231 Difference]: Finished difference. Result has 119 places, 152 transitions, 1277 flow [2024-06-03 19:43:34,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1198, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1277, PETRI_PLACES=119, PETRI_TRANSITIONS=152} [2024-06-03 19:43:34,620 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 62 predicate places. [2024-06-03 19:43:34,620 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 152 transitions, 1277 flow [2024-06-03 19:43:34,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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 19:43:34,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:43:34,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:43:34,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-03 19:43:34,620 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:43:34,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:43:34,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1310746807, now seen corresponding path program 1 times [2024-06-03 19:43:34,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:43:34,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765612550] [2024-06-03 19:43:34,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:43:34,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:43:34,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:43:35,447 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 19:43:35,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:43:35,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765612550] [2024-06-03 19:43:35,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765612550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:43:35,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:43:35,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:43:35,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514775569] [2024-06-03 19:43:35,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:43:35,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:43:35,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:43:35,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:43:35,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:43:35,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-06-03 19:43:35,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 152 transitions, 1277 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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 19:43:35,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:43:35,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-06-03 19:43:35,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:43:37,311 INFO L124 PetriNetUnfolderBase]: 8719/12875 cut-off events. [2024-06-03 19:43:37,311 INFO L125 PetriNetUnfolderBase]: For 277497/277499 co-relation queries the response was YES. [2024-06-03 19:43:37,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73344 conditions, 12875 events. 8719/12875 cut-off events. For 277497/277499 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 76598 event pairs, 3553 based on Foata normal form. 4/12795 useless extension candidates. Maximal degree in co-relation 73297. Up to 11874 conditions per place. [2024-06-03 19:43:37,415 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 156 selfloop transitions, 21 changer transitions 0/186 dead transitions. [2024-06-03 19:43:37,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 186 transitions, 1911 flow [2024-06-03 19:43:37,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:43:37,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:43:37,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 166 transitions. [2024-06-03 19:43:37,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5123456790123457 [2024-06-03 19:43:37,416 INFO L175 Difference]: Start difference. First operand has 119 places, 152 transitions, 1277 flow. Second operand 6 states and 166 transitions. [2024-06-03 19:43:37,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 186 transitions, 1911 flow [2024-06-03 19:43:37,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 186 transitions, 1810 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-03 19:43:37,636 INFO L231 Difference]: Finished difference. Result has 120 places, 160 transitions, 1355 flow [2024-06-03 19:43:37,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1176, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1355, PETRI_PLACES=120, PETRI_TRANSITIONS=160} [2024-06-03 19:43:37,637 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 63 predicate places. [2024-06-03 19:43:37,637 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 160 transitions, 1355 flow [2024-06-03 19:43:37,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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 19:43:37,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:43:37,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:43:37,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-03 19:43:37,638 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:43:37,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:43:37,638 INFO L85 PathProgramCache]: Analyzing trace with hash 692356179, now seen corresponding path program 2 times [2024-06-03 19:43:37,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:43:37,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427505515] [2024-06-03 19:43:37,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:43:37,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:43:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:43:38,450 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 19:43:38,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:43:38,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427505515] [2024-06-03 19:43:38,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427505515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:43:38,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:43:38,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:43:38,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331046492] [2024-06-03 19:43:38,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:43:38,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:43:38,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:43:38,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:43:38,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:43:38,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-06-03 19:43:38,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 160 transitions, 1355 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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 19:43:38,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:43:38,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-06-03 19:43:38,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:43:40,168 INFO L124 PetriNetUnfolderBase]: 8705/12861 cut-off events. [2024-06-03 19:43:40,168 INFO L125 PetriNetUnfolderBase]: For 300468/300474 co-relation queries the response was YES. [2024-06-03 19:43:40,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75725 conditions, 12861 events. 8705/12861 cut-off events. For 300468/300474 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 76561 event pairs, 3530 based on Foata normal form. 8/12788 useless extension candidates. Maximal degree in co-relation 75677. Up to 11862 conditions per place. [2024-06-03 19:43:40,272 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 150 selfloop transitions, 21 changer transitions 0/180 dead transitions. [2024-06-03 19:43:40,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 180 transitions, 1757 flow [2024-06-03 19:43:40,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:43:40,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:43:40,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 160 transitions. [2024-06-03 19:43:40,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49382716049382713 [2024-06-03 19:43:40,273 INFO L175 Difference]: Start difference. First operand has 120 places, 160 transitions, 1355 flow. Second operand 6 states and 160 transitions. [2024-06-03 19:43:40,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 180 transitions, 1757 flow [2024-06-03 19:43:40,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 180 transitions, 1651 flow, removed 48 selfloop flow, removed 2 redundant places. [2024-06-03 19:43:40,575 INFO L231 Difference]: Finished difference. Result has 124 places, 160 transitions, 1300 flow [2024-06-03 19:43:40,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1249, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1300, PETRI_PLACES=124, PETRI_TRANSITIONS=160} [2024-06-03 19:43:40,575 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 67 predicate places. [2024-06-03 19:43:40,575 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 160 transitions, 1300 flow [2024-06-03 19:43:40,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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 19:43:40,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:43:40,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:43:40,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-03 19:43:40,576 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 19:43:40,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:43:40,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1084064553, now seen corresponding path program 1 times [2024-06-03 19:43:40,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:43:40,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14935360] [2024-06-03 19:43:40,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:43:40,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:43:40,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:43:41,743 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 19:43:41,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:43:41,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14935360] [2024-06-03 19:43:41,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14935360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:43:41,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:43:41,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:43:41,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233902507] [2024-06-03 19:43:41,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:43:41,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:43:41,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:43:41,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:43:41,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:43:41,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-06-03 19:43:41,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 160 transitions, 1300 flow. Second operand has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 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 19:43:41,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:43:41,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-06-03 19:43:41,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:43:43,882 INFO L124 PetriNetUnfolderBase]: 10131/14528 cut-off events. [2024-06-03 19:43:43,882 INFO L125 PetriNetUnfolderBase]: For 375649/375651 co-relation queries the response was YES. [2024-06-03 19:43:43,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87143 conditions, 14528 events. 10131/14528 cut-off events. For 375649/375651 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 83545 event pairs, 4061 based on Foata normal form. 18/14460 useless extension candidates. Maximal degree in co-relation 87093. Up to 13077 conditions per place. [2024-06-03 19:43:43,997 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 144 selfloop transitions, 79 changer transitions 0/231 dead transitions. [2024-06-03 19:43:43,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 231 transitions, 2143 flow [2024-06-03 19:43:43,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:43:43,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:43:43,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 247 transitions. [2024-06-03 19:43:43,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5082304526748971 [2024-06-03 19:43:43,998 INFO L175 Difference]: Start difference. First operand has 124 places, 160 transitions, 1300 flow. Second operand 9 states and 247 transitions. [2024-06-03 19:43:43,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 231 transitions, 2143 flow [2024-06-03 19:43:44,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 231 transitions, 2081 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-03 19:43:44,323 INFO L231 Difference]: Finished difference. Result has 129 places, 176 transitions, 1654 flow [2024-06-03 19:43:44,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1238, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1654, PETRI_PLACES=129, PETRI_TRANSITIONS=176} [2024-06-03 19:43:44,324 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 72 predicate places. [2024-06-03 19:43:44,324 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 176 transitions, 1654 flow [2024-06-03 19:43:44,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 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 19:43:44,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:43:44,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:43:44,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-03 19:43:44,324 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:43:44,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:43:44,325 INFO L85 PathProgramCache]: Analyzing trace with hash 763317323, now seen corresponding path program 2 times [2024-06-03 19:43:44,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:43:44,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483538616] [2024-06-03 19:43:44,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:43:44,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:43:44,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:43:45,470 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 19:43:45,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:43:45,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483538616] [2024-06-03 19:43:45,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483538616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:43:45,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:43:45,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:43:45,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767377396] [2024-06-03 19:43:45,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:43:45,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:43:45,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:43:45,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:43:45,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:43:45,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-06-03 19:43:45,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 176 transitions, 1654 flow. Second operand has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 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 19:43:45,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:43:45,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-06-03 19:43:45,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:43:47,619 INFO L124 PetriNetUnfolderBase]: 10373/14921 cut-off events. [2024-06-03 19:43:47,619 INFO L125 PetriNetUnfolderBase]: For 417967/417969 co-relation queries the response was YES. [2024-06-03 19:43:47,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92489 conditions, 14921 events. 10373/14921 cut-off events. For 417967/417969 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 86492 event pairs, 4115 based on Foata normal form. 18/14853 useless extension candidates. Maximal degree in co-relation 92437. Up to 13600 conditions per place. [2024-06-03 19:43:47,745 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 146 selfloop transitions, 86 changer transitions 0/240 dead transitions. [2024-06-03 19:43:47,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 240 transitions, 2467 flow [2024-06-03 19:43:47,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:43:47,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:43:47,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 244 transitions. [2024-06-03 19:43:47,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5020576131687243 [2024-06-03 19:43:47,747 INFO L175 Difference]: Start difference. First operand has 129 places, 176 transitions, 1654 flow. Second operand 9 states and 244 transitions. [2024-06-03 19:43:47,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 240 transitions, 2467 flow [2024-06-03 19:43:48,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 240 transitions, 2287 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-03 19:43:48,083 INFO L231 Difference]: Finished difference. Result has 136 places, 188 transitions, 1871 flow [2024-06-03 19:43:48,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1490, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1871, PETRI_PLACES=136, PETRI_TRANSITIONS=188} [2024-06-03 19:43:48,083 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 79 predicate places. [2024-06-03 19:43:48,083 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 188 transitions, 1871 flow [2024-06-03 19:43:48,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 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 19:43:48,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:43:48,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:43:48,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-03 19:43:48,084 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:43:48,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:43:48,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1623426525, now seen corresponding path program 3 times [2024-06-03 19:43:48,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:43:48,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994894020] [2024-06-03 19:43:48,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:43:48,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:43:48,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:43:49,231 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 19:43:49,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:43:49,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994894020] [2024-06-03 19:43:49,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994894020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:43:49,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:43:49,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:43:49,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918276281] [2024-06-03 19:43:49,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:43:49,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:43:49,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:43:49,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:43:49,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:43:49,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-06-03 19:43:49,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 188 transitions, 1871 flow. Second operand has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 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 19:43:49,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:43:49,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-06-03 19:43:49,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:43:51,441 INFO L124 PetriNetUnfolderBase]: 10557/15223 cut-off events. [2024-06-03 19:43:51,441 INFO L125 PetriNetUnfolderBase]: For 457502/457504 co-relation queries the response was YES. [2024-06-03 19:43:51,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95920 conditions, 15223 events. 10557/15223 cut-off events. For 457502/457504 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 88691 event pairs, 3801 based on Foata normal form. 18/15155 useless extension candidates. Maximal degree in co-relation 95865. Up to 12899 conditions per place. [2024-06-03 19:43:51,593 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 135 selfloop transitions, 106 changer transitions 0/249 dead transitions. [2024-06-03 19:43:51,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 249 transitions, 2829 flow [2024-06-03 19:43:51,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:43:51,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:43:51,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 246 transitions. [2024-06-03 19:43:51,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5061728395061729 [2024-06-03 19:43:51,594 INFO L175 Difference]: Start difference. First operand has 136 places, 188 transitions, 1871 flow. Second operand 9 states and 246 transitions. [2024-06-03 19:43:51,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 249 transitions, 2829 flow [2024-06-03 19:43:51,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 249 transitions, 2678 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-06-03 19:43:52,000 INFO L231 Difference]: Finished difference. Result has 143 places, 194 transitions, 2176 flow [2024-06-03 19:43:52,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1720, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2176, PETRI_PLACES=143, PETRI_TRANSITIONS=194} [2024-06-03 19:43:52,001 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 86 predicate places. [2024-06-03 19:43:52,001 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 194 transitions, 2176 flow [2024-06-03 19:43:52,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 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 19:43:52,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:43:52,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:43:52,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-03 19:43:52,001 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:43:52,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:43:52,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1422077805, now seen corresponding path program 4 times [2024-06-03 19:43:52,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:43:52,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777865282] [2024-06-03 19:43:52,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:43:52,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:43:52,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:43:53,169 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 19:43:53,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:43:53,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777865282] [2024-06-03 19:43:53,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777865282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:43:53,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:43:53,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:43:53,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936087109] [2024-06-03 19:43:53,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:43:53,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:43:53,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:43:53,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:43:53,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:43:53,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-06-03 19:43:53,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 194 transitions, 2176 flow. Second operand has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 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 19:43:53,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:43:53,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-06-03 19:43:53,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:43:55,497 INFO L124 PetriNetUnfolderBase]: 10518/15176 cut-off events. [2024-06-03 19:43:55,497 INFO L125 PetriNetUnfolderBase]: For 480388/480390 co-relation queries the response was YES. [2024-06-03 19:43:55,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96530 conditions, 15176 events. 10518/15176 cut-off events. For 480388/480390 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 88590 event pairs, 4142 based on Foata normal form. 18/15108 useless extension candidates. Maximal degree in co-relation 96473. Up to 13823 conditions per place. [2024-06-03 19:43:55,647 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 153 selfloop transitions, 84 changer transitions 0/245 dead transitions. [2024-06-03 19:43:55,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 245 transitions, 2786 flow [2024-06-03 19:43:55,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:43:55,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:43:55,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 244 transitions. [2024-06-03 19:43:55,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5020576131687243 [2024-06-03 19:43:55,648 INFO L175 Difference]: Start difference. First operand has 143 places, 194 transitions, 2176 flow. Second operand 9 states and 244 transitions. [2024-06-03 19:43:55,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 245 transitions, 2786 flow [2024-06-03 19:43:56,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 245 transitions, 2612 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-03 19:43:56,249 INFO L231 Difference]: Finished difference. Result has 146 places, 193 transitions, 2133 flow [2024-06-03 19:43:56,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1958, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2133, PETRI_PLACES=146, PETRI_TRANSITIONS=193} [2024-06-03 19:43:56,250 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 89 predicate places. [2024-06-03 19:43:56,250 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 193 transitions, 2133 flow [2024-06-03 19:43:56,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 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 19:43:56,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:43:56,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:43:56,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-03 19:43:56,250 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:43:56,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:43:56,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1978326779, now seen corresponding path program 1 times [2024-06-03 19:43:56,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:43:56,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693108395] [2024-06-03 19:43:56,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:43:56,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:43:56,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:43:57,245 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 19:43:57,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:43:57,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693108395] [2024-06-03 19:43:57,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693108395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:43:57,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:43:57,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:43:57,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326643509] [2024-06-03 19:43:57,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:43:57,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:43:57,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:43:57,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:43:57,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:43:57,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-06-03 19:43:57,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 193 transitions, 2133 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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 19:43:57,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:43:57,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-06-03 19:43:57,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:43:59,435 INFO L124 PetriNetUnfolderBase]: 9400/13986 cut-off events. [2024-06-03 19:43:59,435 INFO L125 PetriNetUnfolderBase]: For 428971/428973 co-relation queries the response was YES. [2024-06-03 19:43:59,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87727 conditions, 13986 events. 9400/13986 cut-off events. For 428971/428973 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 85122 event pairs, 3568 based on Foata normal form. 4/13901 useless extension candidates. Maximal degree in co-relation 87668. Up to 12935 conditions per place. [2024-06-03 19:43:59,535 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 199 selfloop transitions, 18 changer transitions 0/226 dead transitions. [2024-06-03 19:43:59,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 226 transitions, 2731 flow [2024-06-03 19:43:59,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:43:59,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:43:59,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 185 transitions. [2024-06-03 19:43:59,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894179894179894 [2024-06-03 19:43:59,537 INFO L175 Difference]: Start difference. First operand has 146 places, 193 transitions, 2133 flow. Second operand 7 states and 185 transitions. [2024-06-03 19:43:59,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 226 transitions, 2731 flow [2024-06-03 19:43:59,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 226 transitions, 2453 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-03 19:43:59,991 INFO L231 Difference]: Finished difference. Result has 145 places, 197 transitions, 1982 flow [2024-06-03 19:43:59,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1855, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1982, PETRI_PLACES=145, PETRI_TRANSITIONS=197} [2024-06-03 19:43:59,992 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 88 predicate places. [2024-06-03 19:43:59,992 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 197 transitions, 1982 flow [2024-06-03 19:43:59,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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 19:43:59,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:43:59,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:43:59,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-03 19:43:59,993 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:43:59,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:43:59,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1978446749, now seen corresponding path program 2 times [2024-06-03 19:43:59,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:43:59,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286242518] [2024-06-03 19:43:59,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:43:59,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:44:00,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:44:01,003 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 19:44:01,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:44:01,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286242518] [2024-06-03 19:44:01,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286242518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:44:01,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:44:01,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:44:01,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473776903] [2024-06-03 19:44:01,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:44:01,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:44:01,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:44:01,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:44:01,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:44:01,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-06-03 19:44:01,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 197 transitions, 1982 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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 19:44:01,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:44:01,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-06-03 19:44:01,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:44:03,156 INFO L124 PetriNetUnfolderBase]: 9432/14026 cut-off events. [2024-06-03 19:44:03,157 INFO L125 PetriNetUnfolderBase]: For 451307/451309 co-relation queries the response was YES. [2024-06-03 19:44:03,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89564 conditions, 14026 events. 9432/14026 cut-off events. For 451307/451309 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 85236 event pairs, 3546 based on Foata normal form. 4/13938 useless extension candidates. Maximal degree in co-relation 89506. Up to 12866 conditions per place. [2024-06-03 19:44:03,272 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 192 selfloop transitions, 35 changer transitions 0/236 dead transitions. [2024-06-03 19:44:03,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 236 transitions, 2802 flow [2024-06-03 19:44:03,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:44:03,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:44:03,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 191 transitions. [2024-06-03 19:44:03,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052910052910053 [2024-06-03 19:44:03,273 INFO L175 Difference]: Start difference. First operand has 145 places, 197 transitions, 1982 flow. Second operand 7 states and 191 transitions. [2024-06-03 19:44:03,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 236 transitions, 2802 flow [2024-06-03 19:44:03,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 236 transitions, 2705 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-03 19:44:03,643 INFO L231 Difference]: Finished difference. Result has 147 places, 205 transitions, 2136 flow [2024-06-03 19:44:03,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1885, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2136, PETRI_PLACES=147, PETRI_TRANSITIONS=205} [2024-06-03 19:44:03,643 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 90 predicate places. [2024-06-03 19:44:03,643 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 205 transitions, 2136 flow [2024-06-03 19:44:03,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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 19:44:03,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:44:03,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:44:03,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-03 19:44:03,644 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:44:03,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:44:03,644 INFO L85 PathProgramCache]: Analyzing trace with hash -11793535, now seen corresponding path program 3 times [2024-06-03 19:44:03,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:44:03,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991486631] [2024-06-03 19:44:03,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:44:03,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:44:03,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:44:04,594 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 19:44:04,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:44:04,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991486631] [2024-06-03 19:44:04,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991486631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:44:04,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:44:04,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:44:04,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272665943] [2024-06-03 19:44:04,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:44:04,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:44:04,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:44:04,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:44:04,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:44:04,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-06-03 19:44:04,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 205 transitions, 2136 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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 19:44:04,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:44:04,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-06-03 19:44:04,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:44:06,734 INFO L124 PetriNetUnfolderBase]: 9418/14011 cut-off events. [2024-06-03 19:44:06,734 INFO L125 PetriNetUnfolderBase]: For 482213/482215 co-relation queries the response was YES. [2024-06-03 19:44:06,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91983 conditions, 14011 events. 9418/14011 cut-off events. For 482213/482215 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 85241 event pairs, 3513 based on Foata normal form. 4/13927 useless extension candidates. Maximal degree in co-relation 91924. Up to 12854 conditions per place. [2024-06-03 19:44:06,857 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 186 selfloop transitions, 35 changer transitions 0/230 dead transitions. [2024-06-03 19:44:06,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 230 transitions, 2652 flow [2024-06-03 19:44:06,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:44:06,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:44:06,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 185 transitions. [2024-06-03 19:44:06,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894179894179894 [2024-06-03 19:44:06,859 INFO L175 Difference]: Start difference. First operand has 147 places, 205 transitions, 2136 flow. Second operand 7 states and 185 transitions. [2024-06-03 19:44:06,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 230 transitions, 2652 flow [2024-06-03 19:44:07,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 230 transitions, 2506 flow, removed 63 selfloop flow, removed 3 redundant places. [2024-06-03 19:44:07,318 INFO L231 Difference]: Finished difference. Result has 151 places, 205 transitions, 2069 flow [2024-06-03 19:44:07,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1990, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2069, PETRI_PLACES=151, PETRI_TRANSITIONS=205} [2024-06-03 19:44:07,319 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 94 predicate places. [2024-06-03 19:44:07,319 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 205 transitions, 2069 flow [2024-06-03 19:44:07,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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 19:44:07,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:44:07,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:44:07,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-03 19:44:07,320 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:44:07,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:44:07,320 INFO L85 PathProgramCache]: Analyzing trace with hash 2127732699, now seen corresponding path program 1 times [2024-06-03 19:44:07,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:44:07,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519986381] [2024-06-03 19:44:07,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:44:07,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:44:07,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:44:08,631 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 19:44:08,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:44:08,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519986381] [2024-06-03 19:44:08,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519986381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:44:08,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:44:08,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:44:08,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595030958] [2024-06-03 19:44:08,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:44:08,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:44:08,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:44:08,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:44:08,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:44:08,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 54 [2024-06-03 19:44:08,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 205 transitions, 2069 flow. Second operand has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 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 19:44:08,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:44:08,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 54 [2024-06-03 19:44:08,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:44:10,630 INFO L124 PetriNetUnfolderBase]: 8867/13349 cut-off events. [2024-06-03 19:44:10,630 INFO L125 PetriNetUnfolderBase]: For 502887/502904 co-relation queries the response was YES. [2024-06-03 19:44:10,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88892 conditions, 13349 events. 8867/13349 cut-off events. For 502887/502904 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 82941 event pairs, 3477 based on Foata normal form. 19/13205 useless extension candidates. Maximal degree in co-relation 88831. Up to 12144 conditions per place. [2024-06-03 19:44:10,771 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 197 selfloop transitions, 17 changer transitions 0/235 dead transitions. [2024-06-03 19:44:10,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 235 transitions, 2674 flow [2024-06-03 19:44:10,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:44:10,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:44:10,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-03 19:44:10,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48677248677248675 [2024-06-03 19:44:10,772 INFO L175 Difference]: Start difference. First operand has 151 places, 205 transitions, 2069 flow. Second operand 7 states and 184 transitions. [2024-06-03 19:44:10,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 235 transitions, 2674 flow [2024-06-03 19:44:11,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 235 transitions, 2564 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-03 19:44:11,273 INFO L231 Difference]: Finished difference. Result has 153 places, 212 transitions, 2121 flow [2024-06-03 19:44:11,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1966, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2121, PETRI_PLACES=153, PETRI_TRANSITIONS=212} [2024-06-03 19:44:11,274 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 96 predicate places. [2024-06-03 19:44:11,274 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 212 transitions, 2121 flow [2024-06-03 19:44:11,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 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 19:44:11,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:44:11,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:44:11,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-03 19:44:11,274 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:44:11,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:44:11,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1109330318, now seen corresponding path program 1 times [2024-06-03 19:44:11,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:44:11,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097386850] [2024-06-03 19:44:11,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:44:11,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:44:11,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:44:12,181 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 19:44:12,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:44:12,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097386850] [2024-06-03 19:44:12,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097386850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:44:12,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:44:12,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 19:44:12,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242444976] [2024-06-03 19:44:12,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:44:12,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 19:44:12,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:44:12,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 19:44:12,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-03 19:44:12,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 54 [2024-06-03 19:44:12,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 212 transitions, 2121 flow. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:44:12,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:44:12,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 54 [2024-06-03 19:44:12,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:44:13,839 INFO L124 PetriNetUnfolderBase]: 8467/12927 cut-off events. [2024-06-03 19:44:13,840 INFO L125 PetriNetUnfolderBase]: For 521970/522051 co-relation queries the response was YES. [2024-06-03 19:44:13,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89969 conditions, 12927 events. 8467/12927 cut-off events. For 521970/522051 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 82594 event pairs, 3263 based on Foata normal form. 16/12670 useless extension candidates. Maximal degree in co-relation 89906. Up to 11541 conditions per place. [2024-06-03 19:44:13,963 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 188 selfloop transitions, 10 changer transitions 0/227 dead transitions. [2024-06-03 19:44:13,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 227 transitions, 2623 flow [2024-06-03 19:44:13,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 19:44:13,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 19:44:13,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2024-06-03 19:44:13,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5037037037037037 [2024-06-03 19:44:13,964 INFO L175 Difference]: Start difference. First operand has 153 places, 212 transitions, 2121 flow. Second operand 5 states and 136 transitions. [2024-06-03 19:44:13,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 227 transitions, 2623 flow [2024-06-03 19:44:14,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 227 transitions, 2525 flow, removed 35 selfloop flow, removed 4 redundant places. [2024-06-03 19:44:14,522 INFO L231 Difference]: Finished difference. Result has 154 places, 216 transitions, 2130 flow [2024-06-03 19:44:14,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2023, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2130, PETRI_PLACES=154, PETRI_TRANSITIONS=216} [2024-06-03 19:44:14,522 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 97 predicate places. [2024-06-03 19:44:14,522 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 216 transitions, 2130 flow [2024-06-03 19:44:14,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:44:14,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:44:14,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:44:14,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-03 19:44:14,523 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:44:14,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:44:14,523 INFO L85 PathProgramCache]: Analyzing trace with hash -876083952, now seen corresponding path program 1 times [2024-06-03 19:44:14,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:44:14,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566763265] [2024-06-03 19:44:14,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:44:14,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:44:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:44:15,487 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 19:44:15,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:44:15,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566763265] [2024-06-03 19:44:15,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566763265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:44:15,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:44:15,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:44:15,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795764946] [2024-06-03 19:44:15,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:44:15,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:44:15,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:44:15,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:44:15,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:44:15,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-06-03 19:44:15,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 216 transitions, 2130 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:44:15,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:44:15,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-06-03 19:44:15,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:44:17,789 INFO L124 PetriNetUnfolderBase]: 10630/15340 cut-off events. [2024-06-03 19:44:17,790 INFO L125 PetriNetUnfolderBase]: For 654190/654202 co-relation queries the response was YES. [2024-06-03 19:44:17,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108885 conditions, 15340 events. 10630/15340 cut-off events. For 654190/654202 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 89611 event pairs, 4061 based on Foata normal form. 16/15355 useless extension candidates. Maximal degree in co-relation 108821. Up to 14325 conditions per place. [2024-06-03 19:44:17,952 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 216 selfloop transitions, 51 changer transitions 0/275 dead transitions. [2024-06-03 19:44:17,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 275 transitions, 3336 flow [2024-06-03 19:44:17,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:44:17,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:44:17,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 194 transitions. [2024-06-03 19:44:17,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5132275132275133 [2024-06-03 19:44:17,953 INFO L175 Difference]: Start difference. First operand has 154 places, 216 transitions, 2130 flow. Second operand 7 states and 194 transitions. [2024-06-03 19:44:17,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 275 transitions, 3336 flow [2024-06-03 19:44:18,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 275 transitions, 3257 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-06-03 19:44:18,552 INFO L231 Difference]: Finished difference. Result has 159 places, 234 transitions, 2491 flow [2024-06-03 19:44:18,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2051, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2491, PETRI_PLACES=159, PETRI_TRANSITIONS=234} [2024-06-03 19:44:18,552 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 102 predicate places. [2024-06-03 19:44:18,552 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 234 transitions, 2491 flow [2024-06-03 19:44:18,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:44:18,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:44:18,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:44:18,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-03 19:44:18,553 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:44:18,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:44:18,553 INFO L85 PathProgramCache]: Analyzing trace with hash -870370032, now seen corresponding path program 2 times [2024-06-03 19:44:18,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:44:18,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192699488] [2024-06-03 19:44:18,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:44:18,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:44:18,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:44:19,625 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 19:44:19,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:44:19,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192699488] [2024-06-03 19:44:19,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192699488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:44:19,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:44:19,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:44:19,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707065241] [2024-06-03 19:44:19,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:44:19,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:44:19,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:44:19,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:44:19,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:44:19,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-06-03 19:44:19,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 234 transitions, 2491 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:44:19,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:44:19,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-06-03 19:44:19,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:44:22,317 INFO L124 PetriNetUnfolderBase]: 10708/15447 cut-off events. [2024-06-03 19:44:22,317 INFO L125 PetriNetUnfolderBase]: For 699655/699667 co-relation queries the response was YES. [2024-06-03 19:44:22,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113297 conditions, 15447 events. 10708/15447 cut-off events. For 699655/699667 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 90200 event pairs, 4035 based on Foata normal form. 16/15462 useless extension candidates. Maximal degree in co-relation 113231. Up to 14395 conditions per place. [2024-06-03 19:44:22,461 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 213 selfloop transitions, 59 changer transitions 0/280 dead transitions. [2024-06-03 19:44:22,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 280 transitions, 3605 flow [2024-06-03 19:44:22,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:44:22,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:44:22,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 191 transitions. [2024-06-03 19:44:22,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052910052910053 [2024-06-03 19:44:22,462 INFO L175 Difference]: Start difference. First operand has 159 places, 234 transitions, 2491 flow. Second operand 7 states and 191 transitions. [2024-06-03 19:44:22,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 280 transitions, 3605 flow [2024-06-03 19:44:23,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 280 transitions, 3454 flow, removed 65 selfloop flow, removed 2 redundant places. [2024-06-03 19:44:23,104 INFO L231 Difference]: Finished difference. Result has 164 places, 242 transitions, 2651 flow [2024-06-03 19:44:23,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2368, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2651, PETRI_PLACES=164, PETRI_TRANSITIONS=242} [2024-06-03 19:44:23,105 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 107 predicate places. [2024-06-03 19:44:23,105 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 242 transitions, 2651 flow [2024-06-03 19:44:23,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:44:23,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:44:23,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:44:23,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-03 19:44:23,106 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:44:23,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:44:23,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1190879216, now seen corresponding path program 3 times [2024-06-03 19:44:23,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:44:23,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997735011] [2024-06-03 19:44:23,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:44:23,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:44:23,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:44:24,130 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 19:44:24,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:44:24,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997735011] [2024-06-03 19:44:24,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997735011] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:44:24,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:44:24,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:44:24,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355663247] [2024-06-03 19:44:24,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:44:24,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:44:24,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:44:24,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:44:24,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:44:24,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-06-03 19:44:24,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 242 transitions, 2651 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:44:24,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:44:24,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-06-03 19:44:24,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:44:26,716 INFO L124 PetriNetUnfolderBase]: 10694/15425 cut-off events. [2024-06-03 19:44:26,717 INFO L125 PetriNetUnfolderBase]: For 727186/727200 co-relation queries the response was YES. [2024-06-03 19:44:26,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113983 conditions, 15425 events. 10694/15425 cut-off events. For 727186/727200 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 90080 event pairs, 4031 based on Foata normal form. 18/15442 useless extension candidates. Maximal degree in co-relation 113915. Up to 14383 conditions per place. [2024-06-03 19:44:26,866 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 214 selfloop transitions, 61 changer transitions 0/283 dead transitions. [2024-06-03 19:44:26,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 283 transitions, 3633 flow [2024-06-03 19:44:26,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:44:26,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:44:26,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 191 transitions. [2024-06-03 19:44:26,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052910052910053 [2024-06-03 19:44:26,867 INFO L175 Difference]: Start difference. First operand has 164 places, 242 transitions, 2651 flow. Second operand 7 states and 191 transitions. [2024-06-03 19:44:26,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 283 transitions, 3633 flow [2024-06-03 19:44:27,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 283 transitions, 3433 flow, removed 65 selfloop flow, removed 3 redundant places. [2024-06-03 19:44:27,567 INFO L231 Difference]: Finished difference. Result has 168 places, 244 transitions, 2616 flow [2024-06-03 19:44:27,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2463, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2616, PETRI_PLACES=168, PETRI_TRANSITIONS=244} [2024-06-03 19:44:27,568 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 111 predicate places. [2024-06-03 19:44:27,568 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 244 transitions, 2616 flow [2024-06-03 19:44:27,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:44:27,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:44:27,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:44:27,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-03 19:44:27,568 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:44:27,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:44:27,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1202300566, now seen corresponding path program 4 times [2024-06-03 19:44:27,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:44:27,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584654851] [2024-06-03 19:44:27,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:44:27,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:44:27,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:44:28,517 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 19:44:28,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:44:28,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584654851] [2024-06-03 19:44:28,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584654851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:44:28,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:44:28,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:44:28,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102138312] [2024-06-03 19:44:28,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:44:28,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:44:28,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:44:28,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:44:28,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:44:28,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-06-03 19:44:28,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 244 transitions, 2616 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:44:28,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:44:28,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-06-03 19:44:28,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:44:31,307 INFO L124 PetriNetUnfolderBase]: 10726/15467 cut-off events. [2024-06-03 19:44:31,307 INFO L125 PetriNetUnfolderBase]: For 757754/757768 co-relation queries the response was YES. [2024-06-03 19:44:31,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115012 conditions, 15467 events. 10726/15467 cut-off events. For 757754/757768 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 90292 event pairs, 4031 based on Foata normal form. 18/15484 useless extension candidates. Maximal degree in co-relation 114943. Up to 14412 conditions per place. [2024-06-03 19:44:31,448 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 209 selfloop transitions, 65 changer transitions 0/282 dead transitions. [2024-06-03 19:44:31,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 282 transitions, 3514 flow [2024-06-03 19:44:31,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:44:31,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:44:31,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-06-03 19:44:31,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2024-06-03 19:44:31,449 INFO L175 Difference]: Start difference. First operand has 168 places, 244 transitions, 2616 flow. Second operand 7 states and 186 transitions. [2024-06-03 19:44:31,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 282 transitions, 3514 flow [2024-06-03 19:44:32,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 282 transitions, 3396 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-03 19:44:32,169 INFO L231 Difference]: Finished difference. Result has 172 places, 248 transitions, 2733 flow [2024-06-03 19:44:32,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2508, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2733, PETRI_PLACES=172, PETRI_TRANSITIONS=248} [2024-06-03 19:44:32,170 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 115 predicate places. [2024-06-03 19:44:32,170 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 248 transitions, 2733 flow [2024-06-03 19:44:32,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:44:32,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:44:32,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:44:32,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-03 19:44:32,170 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:44:32,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:44:32,171 INFO L85 PathProgramCache]: Analyzing trace with hash -365606094, now seen corresponding path program 5 times [2024-06-03 19:44:32,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:44:32,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114524836] [2024-06-03 19:44:32,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:44:32,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:44:32,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:44:33,430 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 19:44:33,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:44:33,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114524836] [2024-06-03 19:44:33,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114524836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:44:33,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:44:33,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:44:33,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111701802] [2024-06-03 19:44:33,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:44:33,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:44:33,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:44:33,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:44:33,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:44:33,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-06-03 19:44:33,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 248 transitions, 2733 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:44:33,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:44:33,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-06-03 19:44:33,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:44:36,425 INFO L124 PetriNetUnfolderBase]: 10712/15453 cut-off events. [2024-06-03 19:44:36,425 INFO L125 PetriNetUnfolderBase]: For 788602/788638 co-relation queries the response was YES. [2024-06-03 19:44:36,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115620 conditions, 15453 events. 10712/15453 cut-off events. For 788602/788638 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 90187 event pairs, 4033 based on Foata normal form. 32/15485 useless extension candidates. Maximal degree in co-relation 115549. Up to 14400 conditions per place. [2024-06-03 19:44:36,555 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 205 selfloop transitions, 65 changer transitions 0/278 dead transitions. [2024-06-03 19:44:36,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 278 transitions, 3517 flow [2024-06-03 19:44:36,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:44:36,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:44:36,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-03 19:44:36,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-03 19:44:36,556 INFO L175 Difference]: Start difference. First operand has 172 places, 248 transitions, 2733 flow. Second operand 7 states and 182 transitions. [2024-06-03 19:44:36,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 278 transitions, 3517 flow [2024-06-03 19:44:37,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 278 transitions, 3319 flow, removed 53 selfloop flow, removed 4 redundant places. [2024-06-03 19:44:37,403 INFO L231 Difference]: Finished difference. Result has 175 places, 248 transitions, 2674 flow [2024-06-03 19:44:37,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2535, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2674, PETRI_PLACES=175, PETRI_TRANSITIONS=248} [2024-06-03 19:44:37,404 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 118 predicate places. [2024-06-03 19:44:37,404 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 248 transitions, 2674 flow [2024-06-03 19:44:37,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:44:37,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:44:37,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:44:37,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-03 19:44:37,405 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:44:37,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:44:37,405 INFO L85 PathProgramCache]: Analyzing trace with hash -320329108, now seen corresponding path program 6 times [2024-06-03 19:44:37,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:44:37,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038655084] [2024-06-03 19:44:37,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:44:37,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:44:37,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:44:38,468 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 19:44:38,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:44:38,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038655084] [2024-06-03 19:44:38,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038655084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:44:38,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:44:38,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:44:38,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235457845] [2024-06-03 19:44:38,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:44:38,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:44:38,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:44:38,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:44:38,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:44:38,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-06-03 19:44:38,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 248 transitions, 2674 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:44:38,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:44:38,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-06-03 19:44:38,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:44:40,963 INFO L124 PetriNetUnfolderBase]: 10698/15440 cut-off events. [2024-06-03 19:44:40,964 INFO L125 PetriNetUnfolderBase]: For 817366/817402 co-relation queries the response was YES. [2024-06-03 19:44:41,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116077 conditions, 15440 events. 10698/15440 cut-off events. For 817366/817402 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 90254 event pairs, 4033 based on Foata normal form. 32/15472 useless extension candidates. Maximal degree in co-relation 116005. Up to 14388 conditions per place. [2024-06-03 19:44:41,365 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 203 selfloop transitions, 65 changer transitions 0/276 dead transitions. [2024-06-03 19:44:41,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 276 transitions, 3308 flow [2024-06-03 19:44:41,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:44:41,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:44:41,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-03 19:44:41,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-03 19:44:41,366 INFO L175 Difference]: Start difference. First operand has 175 places, 248 transitions, 2674 flow. Second operand 7 states and 180 transitions. [2024-06-03 19:44:41,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 276 transitions, 3308 flow [2024-06-03 19:44:42,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 276 transitions, 3128 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-03 19:44:42,407 INFO L231 Difference]: Finished difference. Result has 178 places, 248 transitions, 2633 flow [2024-06-03 19:44:42,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2494, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2633, PETRI_PLACES=178, PETRI_TRANSITIONS=248} [2024-06-03 19:44:42,407 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 121 predicate places. [2024-06-03 19:44:42,408 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 248 transitions, 2633 flow [2024-06-03 19:44:42,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:44:42,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:44:42,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:44:42,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-03 19:44:42,408 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:44:42,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:44:42,409 INFO L85 PathProgramCache]: Analyzing trace with hash 53634628, now seen corresponding path program 1 times [2024-06-03 19:44:42,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:44:42,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305348111] [2024-06-03 19:44:42,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:44:42,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:44:42,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:44:43,599 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 19:44:43,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:44:43,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305348111] [2024-06-03 19:44:43,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305348111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:44:43,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:44:43,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:44:43,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247795516] [2024-06-03 19:44:43,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:44:43,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:44:43,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:44:43,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:44:43,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:44:43,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 54 [2024-06-03 19:44:43,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 248 transitions, 2633 flow. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 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 19:44:43,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:44:43,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 54 [2024-06-03 19:44:43,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:44:45,714 INFO L124 PetriNetUnfolderBase]: 9504/14155 cut-off events. [2024-06-03 19:44:45,714 INFO L125 PetriNetUnfolderBase]: For 856668/856904 co-relation queries the response was YES. [2024-06-03 19:44:45,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109179 conditions, 14155 events. 9504/14155 cut-off events. For 856668/856904 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 89220 event pairs, 4983 based on Foata normal form. 30/14005 useless extension candidates. Maximal degree in co-relation 109106. Up to 12955 conditions per place. [2024-06-03 19:44:45,871 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 207 selfloop transitions, 16 changer transitions 0/265 dead transitions. [2024-06-03 19:44:45,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 265 transitions, 3206 flow [2024-06-03 19:44:45,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:44:45,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:44:45,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-03 19:44:45,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497354497354497 [2024-06-03 19:44:45,872 INFO L175 Difference]: Start difference. First operand has 178 places, 248 transitions, 2633 flow. Second operand 7 states and 170 transitions. [2024-06-03 19:44:45,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 265 transitions, 3206 flow [2024-06-03 19:44:47,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 265 transitions, 3027 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-03 19:44:47,203 INFO L231 Difference]: Finished difference. Result has 179 places, 254 transitions, 2601 flow [2024-06-03 19:44:47,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2455, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2601, PETRI_PLACES=179, PETRI_TRANSITIONS=254} [2024-06-03 19:44:47,204 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 122 predicate places. [2024-06-03 19:44:47,204 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 254 transitions, 2601 flow [2024-06-03 19:44:47,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 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 19:44:47,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:44:47,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:44:47,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-03 19:44:47,205 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:44:47,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:44:47,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1923107510, now seen corresponding path program 1 times [2024-06-03 19:44:47,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:44:47,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34975682] [2024-06-03 19:44:47,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:44:47,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:44:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:44:48,165 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 19:44:48,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:44:48,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34975682] [2024-06-03 19:44:48,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34975682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:44:48,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:44:48,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:44:48,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594205339] [2024-06-03 19:44:48,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:44:48,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:44:48,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:44:48,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:44:48,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:44:48,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-06-03 19:44:48,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 254 transitions, 2601 flow. Second operand has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 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 19:44:48,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:44:48,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-06-03 19:44:48,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:44:51,291 INFO L124 PetriNetUnfolderBase]: 11430/16458 cut-off events. [2024-06-03 19:44:51,291 INFO L125 PetriNetUnfolderBase]: For 1071926/1071934 co-relation queries the response was YES. [2024-06-03 19:44:51,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132070 conditions, 16458 events. 11430/16458 cut-off events. For 1071926/1071934 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 97474 event pairs, 5075 based on Foata normal form. 24/16481 useless extension candidates. Maximal degree in co-relation 131995. Up to 15048 conditions per place. [2024-06-03 19:44:51,446 INFO L140 encePairwiseOnDemand]: 40/54 looper letters, 261 selfloop transitions, 67 changer transitions 0/337 dead transitions. [2024-06-03 19:44:51,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 337 transitions, 3895 flow [2024-06-03 19:44:51,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:44:51,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:44:51,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 252 transitions. [2024-06-03 19:44:51,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-06-03 19:44:51,447 INFO L175 Difference]: Start difference. First operand has 179 places, 254 transitions, 2601 flow. Second operand 9 states and 252 transitions. [2024-06-03 19:44:51,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 337 transitions, 3895 flow [2024-06-03 19:44:52,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 337 transitions, 3798 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-03 19:44:52,565 INFO L231 Difference]: Finished difference. Result has 186 places, 277 transitions, 2965 flow [2024-06-03 19:44:52,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2504, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2965, PETRI_PLACES=186, PETRI_TRANSITIONS=277} [2024-06-03 19:44:52,566 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 129 predicate places. [2024-06-03 19:44:52,566 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 277 transitions, 2965 flow [2024-06-03 19:44:52,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 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 19:44:52,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:44:52,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:44:52,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-03 19:44:52,566 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:44:52,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:44:52,567 INFO L85 PathProgramCache]: Analyzing trace with hash 584068362, now seen corresponding path program 2 times [2024-06-03 19:44:52,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:44:52,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600684394] [2024-06-03 19:44:52,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:44:52,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:44:52,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:44:53,568 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 19:44:53,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:44:53,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600684394] [2024-06-03 19:44:53,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600684394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:44:53,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:44:53,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:44:53,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079197259] [2024-06-03 19:44:53,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:44:53,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:44:53,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:44:53,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:44:53,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:44:53,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-06-03 19:44:53,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 277 transitions, 2965 flow. Second operand has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 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 19:44:53,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:44:53,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-06-03 19:44:53,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:44:56,818 INFO L124 PetriNetUnfolderBase]: 11506/16543 cut-off events. [2024-06-03 19:44:56,818 INFO L125 PetriNetUnfolderBase]: For 1112404/1112410 co-relation queries the response was YES. [2024-06-03 19:44:56,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135803 conditions, 16543 events. 11506/16543 cut-off events. For 1112404/1112410 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 97536 event pairs, 5105 based on Foata normal form. 26/16568 useless extension candidates. Maximal degree in co-relation 135725. Up to 15330 conditions per place. [2024-06-03 19:44:56,979 INFO L140 encePairwiseOnDemand]: 40/54 looper letters, 257 selfloop transitions, 68 changer transitions 0/334 dead transitions. [2024-06-03 19:44:56,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 334 transitions, 3927 flow [2024-06-03 19:44:56,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:44:56,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:44:56,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 244 transitions. [2024-06-03 19:44:56,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5020576131687243 [2024-06-03 19:44:56,980 INFO L175 Difference]: Start difference. First operand has 186 places, 277 transitions, 2965 flow. Second operand 9 states and 244 transitions. [2024-06-03 19:44:56,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 334 transitions, 3927 flow [2024-06-03 19:44:58,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 334 transitions, 3731 flow, removed 44 selfloop flow, removed 5 redundant places. [2024-06-03 19:44:58,131 INFO L231 Difference]: Finished difference. Result has 191 places, 284 transitions, 3062 flow [2024-06-03 19:44:58,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2779, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3062, PETRI_PLACES=191, PETRI_TRANSITIONS=284} [2024-06-03 19:44:58,132 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 134 predicate places. [2024-06-03 19:44:58,132 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 284 transitions, 3062 flow [2024-06-03 19:44:58,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 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 19:44:58,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:44:58,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:44:58,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-03 19:44:58,133 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:44:58,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:44:58,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1344586420, now seen corresponding path program 3 times [2024-06-03 19:44:58,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:44:58,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108751684] [2024-06-03 19:44:58,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:44:58,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:44:58,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:44:59,031 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 19:44:59,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:44:59,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108751684] [2024-06-03 19:44:59,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108751684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:44:59,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:44:59,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:44:59,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751437021] [2024-06-03 19:44:59,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:44:59,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:44:59,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:44:59,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:44:59,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:44:59,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-06-03 19:44:59,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 284 transitions, 3062 flow. Second operand has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 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 19:44:59,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:44:59,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-06-03 19:44:59,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:45:02,475 INFO L124 PetriNetUnfolderBase]: 12125/17461 cut-off events. [2024-06-03 19:45:02,475 INFO L125 PetriNetUnfolderBase]: For 1209543/1209547 co-relation queries the response was YES. [2024-06-03 19:45:02,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144150 conditions, 17461 events. 12125/17461 cut-off events. For 1209543/1209547 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 103945 event pairs, 4486 based on Foata normal form. 20/17480 useless extension candidates. Maximal degree in co-relation 144071. Up to 15309 conditions per place. [2024-06-03 19:45:02,663 INFO L140 encePairwiseOnDemand]: 40/54 looper letters, 268 selfloop transitions, 90 changer transitions 0/367 dead transitions. [2024-06-03 19:45:02,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 367 transitions, 4686 flow [2024-06-03 19:45:02,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:45:02,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:45:02,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 254 transitions. [2024-06-03 19:45:02,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.522633744855967 [2024-06-03 19:45:02,664 INFO L175 Difference]: Start difference. First operand has 191 places, 284 transitions, 3062 flow. Second operand 9 states and 254 transitions. [2024-06-03 19:45:02,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 367 transitions, 4686 flow [2024-06-03 19:45:04,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 367 transitions, 4480 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-03 19:45:04,259 INFO L231 Difference]: Finished difference. Result has 196 places, 304 transitions, 3514 flow [2024-06-03 19:45:04,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2896, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3514, PETRI_PLACES=196, PETRI_TRANSITIONS=304} [2024-06-03 19:45:04,260 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 139 predicate places. [2024-06-03 19:45:04,260 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 304 transitions, 3514 flow [2024-06-03 19:45:04,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 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 19:45:04,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:45:04,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:45:04,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-03 19:45:04,261 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:45:04,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:45:04,261 INFO L85 PathProgramCache]: Analyzing trace with hash 2046041964, now seen corresponding path program 1 times [2024-06-03 19:45:04,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:45:04,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453109366] [2024-06-03 19:45:04,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:45:04,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:45:04,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat