./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix007.oepc.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/mix007.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cde23df1 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/mix007.oepc.i ./goblint.2024-05-21_14-57-05.files/protection/mix007.oepc.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-cde23df-m [2024-06-14 11:51:15,779 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 11:51:15,816 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 11:51:15,819 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 11:51:15,819 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 11:51:15,835 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 11:51:15,836 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 11:51:15,836 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 11:51:15,837 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 11:51:15,837 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 11:51:15,837 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 11:51:15,837 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 11:51:15,838 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 11:51:15,838 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 11:51:15,838 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 11:51:15,839 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 11:51:15,839 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 11:51:15,839 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 11:51:15,840 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 11:51:15,840 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 11:51:15,840 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 11:51:15,841 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 11:51:15,841 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 11:51:15,841 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 11:51:15,842 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 11:51:15,842 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 11:51:15,842 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 11:51:15,842 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 11:51:15,843 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 11:51:15,843 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 11:51:15,843 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 11:51:15,843 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 11:51:15,844 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 11:51:15,844 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 11:51:15,844 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 11:51:15,845 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 11:51:15,845 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 11:51:15,845 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 11:51:15,845 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 11:51:15,846 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 11:51:15,846 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 11:51:15,846 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 11:51:15,846 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 11:51:15,846 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 11:51:16,010 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 11:51:16,026 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 11:51:16,028 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 11:51:16,029 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 11:51:16,029 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 11:51:16,030 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix007.oepc.yml/witness.yml [2024-06-14 11:51:16,254 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 11:51:16,255 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 11:51:16,256 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix007.oepc.i [2024-06-14 11:51:17,276 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 11:51:17,461 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 11:51:17,462 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix007.oepc.i [2024-06-14 11:51:17,473 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3460c513b/1a4c85166a1647bfaea158197dd26213/FLAGaa54094bf [2024-06-14 11:51:17,483 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3460c513b/1a4c85166a1647bfaea158197dd26213 [2024-06-14 11:51:17,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 11:51:17,485 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 11:51:17,485 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 11:51:17,485 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 11:51:17,490 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 11:51:17,491 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:51:16" (1/2) ... [2024-06-14 11:51:17,492 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad94222 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:51:17, skipping insertion in model container [2024-06-14 11:51:17,492 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:51:16" (1/2) ... [2024-06-14 11:51:17,493 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@79fd957 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:51:17, skipping insertion in model container [2024-06-14 11:51:17,493 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 11:51:17" (2/2) ... [2024-06-14 11:51:17,493 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad94222 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:51:17, skipping insertion in model container [2024-06-14 11:51:17,494 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 11:51:17" (2/2) ... [2024-06-14 11:51:17,494 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 11:51:17,594 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 11:51:17,595 INFO L97 edCorrectnessWitness]: Location invariant before [L878-L878] (((((((((((((((((((((((! multithreaded || ((0 <= a$w_buff0 && a$w_buff0 <= 1) && (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 2) && __unbuffered_p2_EAX <= 127) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= a$w_buff1 && a$w_buff1 <= 1) && (a$w_buff1 == 0 || a$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || ((0 <= a$mem_tmp && a$mem_tmp <= 1) && (a$mem_tmp == 0 || a$mem_tmp == 1))) [2024-06-14 11:51:17,596 INFO L97 edCorrectnessWitness]: Location invariant before [L879-L879] (((((((((((((((((((((((! multithreaded || ((0 <= a$w_buff0 && a$w_buff0 <= 1) && (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 2) && __unbuffered_p2_EAX <= 127) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= a$w_buff1 && a$w_buff1 <= 1) && (a$w_buff1 == 0 || a$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || ((0 <= a$mem_tmp && a$mem_tmp <= 1) && (a$mem_tmp == 0 || a$mem_tmp == 1))) [2024-06-14 11:51:17,596 INFO L97 edCorrectnessWitness]: Location invariant before [L874-L874] (((((((((((((((((((((((! multithreaded || ((0 <= a$w_buff0 && a$w_buff0 <= 1) && (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 2) && __unbuffered_p2_EAX <= 127) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= a$w_buff1 && a$w_buff1 <= 1) && (a$w_buff1 == 0 || a$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || ((0 <= a$mem_tmp && a$mem_tmp <= 1) && (a$mem_tmp == 0 || a$mem_tmp == 1))) [2024-06-14 11:51:17,596 INFO L97 edCorrectnessWitness]: Location invariant before [L876-L876] (((((((((((((((((((((((! multithreaded || ((0 <= a$w_buff0 && a$w_buff0 <= 1) && (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 2) && __unbuffered_p2_EAX <= 127) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= a$w_buff1 && a$w_buff1 <= 1) && (a$w_buff1 == 0 || a$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || ((0 <= a$mem_tmp && a$mem_tmp <= 1) && (a$mem_tmp == 0 || a$mem_tmp == 1))) [2024-06-14 11:51:17,596 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 11:51:17,597 INFO L106 edCorrectnessWitness]: ghost_update [L872-L872] multithreaded = 1; [2024-06-14 11:51:17,629 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 11:51:17,930 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 11:51:17,938 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 11:51:18,079 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 11:51:18,107 INFO L206 MainTranslator]: Completed translation [2024-06-14 11:51:18,107 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:51:18 WrapperNode [2024-06-14 11:51:18,107 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 11:51:18,108 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 11:51:18,108 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 11:51:18,108 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 11:51:18,113 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:51:18" (1/1) ... [2024-06-14 11:51:18,127 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:51:18" (1/1) ... [2024-06-14 11:51:18,155 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 140 [2024-06-14 11:51:18,155 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 11:51:18,155 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 11:51:18,155 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 11:51:18,155 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 11:51:18,167 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:51:18" (1/1) ... [2024-06-14 11:51:18,169 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:51:18" (1/1) ... [2024-06-14 11:51:18,174 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:51:18" (1/1) ... [2024-06-14 11:51:18,190 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]. [2024-06-14 11:51:18,206 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:51:18" (1/1) ... [2024-06-14 11:51:18,206 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:51:18" (1/1) ... [2024-06-14 11:51:18,222 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:51:18" (1/1) ... [2024-06-14 11:51:18,224 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:51:18" (1/1) ... [2024-06-14 11:51:18,227 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:51:18" (1/1) ... [2024-06-14 11:51:18,238 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:51:18" (1/1) ... [2024-06-14 11:51:18,257 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 11:51:18,258 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 11:51:18,258 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 11:51:18,258 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 11:51:18,259 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:51:18" (1/1) ... [2024-06-14 11:51:18,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 11:51:18,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 11:51:18,290 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) [2024-06-14 11:51:18,306 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 [2024-06-14 11:51:18,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 11:51:18,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 11:51:18,320 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-14 11:51:18,320 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-14 11:51:18,321 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-14 11:51:18,328 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-14 11:51:18,328 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-14 11:51:18,357 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-14 11:51:18,357 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-14 11:51:18,359 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-14 11:51:18,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 11:51:18,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 11:51:18,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 11:51:18,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 11:51:18,361 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 11:51:18,485 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 11:51:18,487 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 11:51:18,887 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 11:51:18,888 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 11:51:19,034 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 11:51:19,035 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 11:51:19,035 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 11:51:19 BoogieIcfgContainer [2024-06-14 11:51:19,035 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 11:51:19,037 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 11:51:19,037 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 11:51:19,039 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 11:51:19,039 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:51:16" (1/4) ... [2024-06-14 11:51:19,040 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@279b9bb8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 11:51:19, skipping insertion in model container [2024-06-14 11:51:19,040 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 11:51:17" (2/4) ... [2024-06-14 11:51:19,040 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@279b9bb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 11:51:19, skipping insertion in model container [2024-06-14 11:51:19,040 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:51:18" (3/4) ... [2024-06-14 11:51:19,041 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@279b9bb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 11:51:19, skipping insertion in model container [2024-06-14 11:51:19,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 11:51:19" (4/4) ... [2024-06-14 11:51:19,042 INFO L112 eAbstractionObserver]: Analyzing ICFG mix007.oepc.i [2024-06-14 11:51:19,055 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 11:51:19,055 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-14 11:51:19,055 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 11:51:19,099 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 11:51:19,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 54 transitions, 124 flow [2024-06-14 11:51:19,146 INFO L124 PetriNetUnfolderBase]: 0/50 cut-off events. [2024-06-14 11:51:19,146 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 11:51:19,148 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 95 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. [2024-06-14 11:51:19,148 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 54 transitions, 124 flow [2024-06-14 11:51:19,150 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 44 transitions, 100 flow [2024-06-14 11:51:19,157 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 11:51:19,161 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;@46afc2a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 11:51:19,161 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-14 11:51:19,165 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 11:51:19,165 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-14 11:51:19,165 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 11:51:19,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:19,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 11:51:19,166 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)] === [2024-06-14 11:51:19,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:19,169 INFO L85 PathProgramCache]: Analyzing trace with hash -242350880, now seen corresponding path program 1 times [2024-06-14 11:51:19,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:19,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976383778] [2024-06-14 11:51:19,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:19,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:19,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:20,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:20,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:20,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976383778] [2024-06-14 11:51:20,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976383778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:20,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:20,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 11:51:20,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706560960] [2024-06-14 11:51:20,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:20,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 11:51:20,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:20,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 11:51:20,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 11:51:20,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-06-14 11:51:20,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2024-06-14 11:51:20,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:20,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-06-14 11:51:20,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:22,146 INFO L124 PetriNetUnfolderBase]: 9583/13467 cut-off events. [2024-06-14 11:51:22,146 INFO L125 PetriNetUnfolderBase]: For 182/182 co-relation queries the response was YES. [2024-06-14 11:51:22,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26867 conditions, 13467 events. 9583/13467 cut-off events. For 182/182 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 75740 event pairs, 7347 based on Foata normal form. 1/13198 useless extension candidates. Maximal degree in co-relation 26851. Up to 13009 conditions per place. [2024-06-14 11:51:22,228 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 45 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-06-14 11:51:22,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 58 transitions, 237 flow [2024-06-14 11:51:22,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 11:51:22,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 11:51:22,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2024-06-14 11:51:22,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-06-14 11:51:22,240 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 100 flow. Second operand 3 states and 99 transitions. [2024-06-14 11:51:22,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 58 transitions, 237 flow [2024-06-14 11:51:22,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 58 transitions, 230 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-14 11:51:22,248 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 135 flow [2024-06-14 11:51:22,250 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} [2024-06-14 11:51:22,253 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -1 predicate places. [2024-06-14 11:51:22,253 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 135 flow [2024-06-14 11:51:22,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2024-06-14 11:51:22,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:22,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:51:22,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 11:51:22,254 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)] === [2024-06-14 11:51:22,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:22,255 INFO L85 PathProgramCache]: Analyzing trace with hash -970904065, now seen corresponding path program 1 times [2024-06-14 11:51:22,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:22,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052340841] [2024-06-14 11:51:22,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:22,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:22,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:23,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:23,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:23,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052340841] [2024-06-14 11:51:23,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052340841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:23,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:23,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 11:51:23,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855091016] [2024-06-14 11:51:23,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:23,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 11:51:23,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:23,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 11:51:23,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-14 11:51:23,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-06-14 11:51:23,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 135 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:23,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:23,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-06-14 11:51:23,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:24,631 INFO L124 PetriNetUnfolderBase]: 9573/13453 cut-off events. [2024-06-14 11:51:24,631 INFO L125 PetriNetUnfolderBase]: For 2592/2592 co-relation queries the response was YES. [2024-06-14 11:51:24,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30293 conditions, 13453 events. 9573/13453 cut-off events. For 2592/2592 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 75691 event pairs, 6546 based on Foata normal form. 4/13369 useless extension candidates. Maximal degree in co-relation 30278. Up to 12974 conditions per place. [2024-06-14 11:51:24,708 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 55 selfloop transitions, 9 changer transitions 0/72 dead transitions. [2024-06-14 11:51:24,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 72 transitions, 329 flow [2024-06-14 11:51:24,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 11:51:24,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 11:51:24,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2024-06-14 11:51:24,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2024-06-14 11:51:24,712 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 135 flow. Second operand 4 states and 128 transitions. [2024-06-14 11:51:24,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 72 transitions, 329 flow [2024-06-14 11:51:24,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 72 transitions, 324 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 11:51:24,716 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 183 flow [2024-06-14 11:51:24,717 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} [2024-06-14 11:51:24,718 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 2 predicate places. [2024-06-14 11:51:24,718 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 183 flow [2024-06-14 11:51:24,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:24,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:24,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:51:24,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 11:51:24,722 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)] === [2024-06-14 11:51:24,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:24,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1030843618, now seen corresponding path program 1 times [2024-06-14 11:51:24,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:24,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525690671] [2024-06-14 11:51:24,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:24,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:24,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:25,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:25,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:25,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525690671] [2024-06-14 11:51:25,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525690671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:25,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:25,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:51:25,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730535587] [2024-06-14 11:51:25,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:25,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:51:25,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:25,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:51:25,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:51:25,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-06-14 11:51:25,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 183 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:25,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:25,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-06-14 11:51:25,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:27,553 INFO L124 PetriNetUnfolderBase]: 11609/16252 cut-off events. [2024-06-14 11:51:27,554 INFO L125 PetriNetUnfolderBase]: For 8523/8523 co-relation queries the response was YES. [2024-06-14 11:51:27,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40405 conditions, 16252 events. 11609/16252 cut-off events. For 8523/8523 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 91768 event pairs, 6715 based on Foata normal form. 4/16143 useless extension candidates. Maximal degree in co-relation 40388. Up to 15648 conditions per place. [2024-06-14 11:51:27,642 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 76 selfloop transitions, 17 changer transitions 0/100 dead transitions. [2024-06-14 11:51:27,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 100 transitions, 516 flow [2024-06-14 11:51:27,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:51:27,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:51:27,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 181 transitions. [2024-06-14 11:51:27,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.558641975308642 [2024-06-14 11:51:27,647 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 183 flow. Second operand 6 states and 181 transitions. [2024-06-14 11:51:27,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 100 transitions, 516 flow [2024-06-14 11:51:27,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 100 transitions, 488 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-14 11:51:27,652 INFO L231 Difference]: Finished difference. Result has 64 places, 60 transitions, 260 flow [2024-06-14 11:51:27,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=260, PETRI_PLACES=64, PETRI_TRANSITIONS=60} [2024-06-14 11:51:27,653 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 7 predicate places. [2024-06-14 11:51:27,653 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 60 transitions, 260 flow [2024-06-14 11:51:27,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:27,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:27,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:51:27,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 11:51:27,654 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 11:51:27,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:27,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1891379162, now seen corresponding path program 1 times [2024-06-14 11:51:27,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:27,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866529926] [2024-06-14 11:51:27,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:27,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:27,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:28,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:28,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:28,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866529926] [2024-06-14 11:51:28,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866529926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:28,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:28,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:51:28,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622390337] [2024-06-14 11:51:28,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:28,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:51:28,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:28,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:51:28,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:51:28,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-06-14 11:51:28,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 60 transitions, 260 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:28,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:28,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-06-14 11:51:28,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:30,444 INFO L124 PetriNetUnfolderBase]: 11593/16236 cut-off events. [2024-06-14 11:51:30,445 INFO L125 PetriNetUnfolderBase]: For 17147/17147 co-relation queries the response was YES. [2024-06-14 11:51:30,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44941 conditions, 16236 events. 11593/16236 cut-off events. For 17147/17147 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 91886 event pairs, 5796 based on Foata normal form. 8/16123 useless extension candidates. Maximal degree in co-relation 44922. Up to 15582 conditions per place. [2024-06-14 11:51:30,571 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 83 selfloop transitions, 20 changer transitions 0/110 dead transitions. [2024-06-14 11:51:30,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 110 transitions, 606 flow [2024-06-14 11:51:30,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:51:30,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:51:30,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 205 transitions. [2024-06-14 11:51:30,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5423280423280423 [2024-06-14 11:51:30,573 INFO L175 Difference]: Start difference. First operand has 64 places, 60 transitions, 260 flow. Second operand 7 states and 205 transitions. [2024-06-14 11:51:30,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 110 transitions, 606 flow [2024-06-14 11:51:30,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 110 transitions, 567 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-14 11:51:30,582 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 293 flow [2024-06-14 11:51:30,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=293, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2024-06-14 11:51:30,584 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 10 predicate places. [2024-06-14 11:51:30,584 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 293 flow [2024-06-14 11:51:30,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:30,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:30,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:51:30,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 11:51:30,585 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)] === [2024-06-14 11:51:30,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:30,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1143081064, now seen corresponding path program 1 times [2024-06-14 11:51:30,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:30,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482370657] [2024-06-14 11:51:30,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:30,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:30,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:31,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:31,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:31,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482370657] [2024-06-14 11:51:31,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482370657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:31,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:31,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:51:31,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251391425] [2024-06-14 11:51:31,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:31,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:51:31,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:31,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:51:31,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:51:31,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-14 11:51:31,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 293 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:31,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:31,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-14 11:51:31,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:33,019 INFO L124 PetriNetUnfolderBase]: 11584/16280 cut-off events. [2024-06-14 11:51:33,020 INFO L125 PetriNetUnfolderBase]: For 26808/26808 co-relation queries the response was YES. [2024-06-14 11:51:33,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48167 conditions, 16280 events. 11584/16280 cut-off events. For 26808/26808 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 92588 event pairs, 6342 based on Foata normal form. 3/16196 useless extension candidates. Maximal degree in co-relation 48147. Up to 15660 conditions per place. [2024-06-14 11:51:33,091 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 66 selfloop transitions, 10 changer transitions 0/83 dead transitions. [2024-06-14 11:51:33,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 83 transitions, 515 flow [2024-06-14 11:51:33,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 11:51:33,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 11:51:33,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-06-14 11:51:33,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2024-06-14 11:51:33,093 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 293 flow. Second operand 5 states and 129 transitions. [2024-06-14 11:51:33,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 83 transitions, 515 flow [2024-06-14 11:51:33,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 83 transitions, 461 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-14 11:51:33,098 INFO L231 Difference]: Finished difference. Result has 67 places, 66 transitions, 304 flow [2024-06-14 11:51:33,099 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=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=304, PETRI_PLACES=67, PETRI_TRANSITIONS=66} [2024-06-14 11:51:33,099 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 10 predicate places. [2024-06-14 11:51:33,099 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 66 transitions, 304 flow [2024-06-14 11:51:33,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:33,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:33,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:51:33,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 11:51:33,116 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)] === [2024-06-14 11:51:33,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:33,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1075776094, now seen corresponding path program 1 times [2024-06-14 11:51:33,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:33,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299422466] [2024-06-14 11:51:33,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:33,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:33,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:33,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:33,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:33,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299422466] [2024-06-14 11:51:33,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299422466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:33,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:33,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:51:33,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877829255] [2024-06-14 11:51:33,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:33,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:51:33,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:33,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:51:33,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:51:34,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-14 11:51:34,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 66 transitions, 304 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:34,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:34,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-14 11:51:34,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:36,194 INFO L124 PetriNetUnfolderBase]: 14044/19485 cut-off events. [2024-06-14 11:51:36,195 INFO L125 PetriNetUnfolderBase]: For 43890/43890 co-relation queries the response was YES. [2024-06-14 11:51:36,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61547 conditions, 19485 events. 14044/19485 cut-off events. For 43890/43890 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 107979 event pairs, 7382 based on Foata normal form. 10/19485 useless extension candidates. Maximal degree in co-relation 61525. Up to 18810 conditions per place. [2024-06-14 11:51:36,301 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 82 selfloop transitions, 22 changer transitions 0/110 dead transitions. [2024-06-14 11:51:36,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 110 transitions, 716 flow [2024-06-14 11:51:36,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:51:36,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:51:36,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 158 transitions. [2024-06-14 11:51:36,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4876543209876543 [2024-06-14 11:51:36,303 INFO L175 Difference]: Start difference. First operand has 67 places, 66 transitions, 304 flow. Second operand 6 states and 158 transitions. [2024-06-14 11:51:36,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 110 transitions, 716 flow [2024-06-14 11:51:36,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 110 transitions, 683 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-14 11:51:36,311 INFO L231 Difference]: Finished difference. Result has 72 places, 80 transitions, 451 flow [2024-06-14 11:51:36,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=451, PETRI_PLACES=72, PETRI_TRANSITIONS=80} [2024-06-14 11:51:36,312 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 15 predicate places. [2024-06-14 11:51:36,312 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 80 transitions, 451 flow [2024-06-14 11:51:36,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:36,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:36,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:51:36,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 11:51:36,313 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)] === [2024-06-14 11:51:36,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:36,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1681334921, now seen corresponding path program 1 times [2024-06-14 11:51:36,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:36,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880680529] [2024-06-14 11:51:36,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:36,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:36,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:37,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:37,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:37,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880680529] [2024-06-14 11:51:37,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880680529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:37,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:37,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:51:37,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876045146] [2024-06-14 11:51:37,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:37,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:51:37,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:37,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:51:37,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:51:37,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-14 11:51:37,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 80 transitions, 451 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:37,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:37,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-14 11:51:37,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:39,546 INFO L124 PetriNetUnfolderBase]: 13227/18697 cut-off events. [2024-06-14 11:51:39,546 INFO L125 PetriNetUnfolderBase]: For 63414/63440 co-relation queries the response was YES. [2024-06-14 11:51:39,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65729 conditions, 18697 events. 13227/18697 cut-off events. For 63414/63440 co-relation queries the response was YES. Maximal size of possible extension queue 668. Compared 108115 event pairs, 6749 based on Foata normal form. 11/18557 useless extension candidates. Maximal degree in co-relation 65704. Up to 17763 conditions per place. [2024-06-14 11:51:39,656 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 87 selfloop transitions, 21 changer transitions 0/118 dead transitions. [2024-06-14 11:51:39,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 118 transitions, 855 flow [2024-06-14 11:51:39,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:51:39,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:51:39,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 161 transitions. [2024-06-14 11:51:39,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49691358024691357 [2024-06-14 11:51:39,658 INFO L175 Difference]: Start difference. First operand has 72 places, 80 transitions, 451 flow. Second operand 6 states and 161 transitions. [2024-06-14 11:51:39,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 118 transitions, 855 flow [2024-06-14 11:51:39,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 118 transitions, 829 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-06-14 11:51:39,672 INFO L231 Difference]: Finished difference. Result has 77 places, 88 transitions, 562 flow [2024-06-14 11:51:39,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=562, PETRI_PLACES=77, PETRI_TRANSITIONS=88} [2024-06-14 11:51:39,673 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 20 predicate places. [2024-06-14 11:51:39,673 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 88 transitions, 562 flow [2024-06-14 11:51:39,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:39,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:39,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:51:39,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 11:51:39,674 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)] === [2024-06-14 11:51:39,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:39,674 INFO L85 PathProgramCache]: Analyzing trace with hash -988342631, now seen corresponding path program 2 times [2024-06-14 11:51:39,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:39,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704574000] [2024-06-14 11:51:39,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:39,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:39,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:40,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:40,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:40,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704574000] [2024-06-14 11:51:40,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704574000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:40,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:40,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:51:40,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333898911] [2024-06-14 11:51:40,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:40,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:51:40,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:40,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:51:40,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:51:40,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-14 11:51:40,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 88 transitions, 562 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:40,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:40,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-14 11:51:40,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:42,661 INFO L124 PetriNetUnfolderBase]: 13218/18683 cut-off events. [2024-06-14 11:51:42,661 INFO L125 PetriNetUnfolderBase]: For 81991/82005 co-relation queries the response was YES. [2024-06-14 11:51:42,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69956 conditions, 18683 events. 13218/18683 cut-off events. For 81991/82005 co-relation queries the response was YES. Maximal size of possible extension queue 668. Compared 107991 event pairs, 6742 based on Foata normal form. 3/18537 useless extension candidates. Maximal degree in co-relation 69928. Up to 17790 conditions per place. [2024-06-14 11:51:42,778 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 88 selfloop transitions, 14 changer transitions 0/112 dead transitions. [2024-06-14 11:51:42,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 112 transitions, 828 flow [2024-06-14 11:51:42,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:51:42,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:51:42,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-06-14 11:51:42,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-14 11:51:42,781 INFO L175 Difference]: Start difference. First operand has 77 places, 88 transitions, 562 flow. Second operand 6 states and 153 transitions. [2024-06-14 11:51:42,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 112 transitions, 828 flow [2024-06-14 11:51:42,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 112 transitions, 762 flow, removed 28 selfloop flow, removed 2 redundant places. [2024-06-14 11:51:42,830 INFO L231 Difference]: Finished difference. Result has 81 places, 88 transitions, 535 flow [2024-06-14 11:51:42,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=535, PETRI_PLACES=81, PETRI_TRANSITIONS=88} [2024-06-14 11:51:42,833 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 24 predicate places. [2024-06-14 11:51:42,833 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 88 transitions, 535 flow [2024-06-14 11:51:42,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:42,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:42,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:51:42,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 11:51:42,833 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)] === [2024-06-14 11:51:42,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:42,834 INFO L85 PathProgramCache]: Analyzing trace with hash -581893677, now seen corresponding path program 1 times [2024-06-14 11:51:42,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:42,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073104560] [2024-06-14 11:51:42,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:42,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:42,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:43,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:43,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:43,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073104560] [2024-06-14 11:51:43,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073104560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:43,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:43,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:51:43,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919102757] [2024-06-14 11:51:43,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:43,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:51:43,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:43,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:51:43,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:51:44,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-14 11:51:44,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 88 transitions, 535 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:44,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:44,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-14 11:51:44,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:45,933 INFO L124 PetriNetUnfolderBase]: 13244/18722 cut-off events. [2024-06-14 11:51:45,934 INFO L125 PetriNetUnfolderBase]: For 91198/91212 co-relation queries the response was YES. [2024-06-14 11:51:45,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70849 conditions, 18722 events. 13244/18722 cut-off events. For 91198/91212 co-relation queries the response was YES. Maximal size of possible extension queue 665. Compared 108127 event pairs, 6613 based on Foata normal form. 3/18583 useless extension candidates. Maximal degree in co-relation 70819. Up to 17802 conditions per place. [2024-06-14 11:51:46,061 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 101 selfloop transitions, 18 changer transitions 0/129 dead transitions. [2024-06-14 11:51:46,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 129 transitions, 913 flow [2024-06-14 11:51:46,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:51:46,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:51:46,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-14 11:51:46,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48412698412698413 [2024-06-14 11:51:46,063 INFO L175 Difference]: Start difference. First operand has 81 places, 88 transitions, 535 flow. Second operand 7 states and 183 transitions. [2024-06-14 11:51:46,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 129 transitions, 913 flow [2024-06-14 11:51:46,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 129 transitions, 869 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-14 11:51:46,099 INFO L231 Difference]: Finished difference. Result has 82 places, 92 transitions, 590 flow [2024-06-14 11:51:46,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=590, PETRI_PLACES=82, PETRI_TRANSITIONS=92} [2024-06-14 11:51:46,100 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 25 predicate places. [2024-06-14 11:51:46,100 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 92 transitions, 590 flow [2024-06-14 11:51:46,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:46,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:46,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:51:46,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 11:51:46,101 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)] === [2024-06-14 11:51:46,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:46,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1202825955, now seen corresponding path program 1 times [2024-06-14 11:51:46,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:46,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796767562] [2024-06-14 11:51:46,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:46,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:46,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:47,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:47,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:47,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796767562] [2024-06-14 11:51:47,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796767562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:47,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:47,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:51:47,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705433922] [2024-06-14 11:51:47,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:47,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:51:47,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:47,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:51:47,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:51:47,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-14 11:51:47,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 92 transitions, 590 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:47,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:47,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-14 11:51:47,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:49,298 INFO L124 PetriNetUnfolderBase]: 14288/19867 cut-off events. [2024-06-14 11:51:49,299 INFO L125 PetriNetUnfolderBase]: For 118130/118133 co-relation queries the response was YES. [2024-06-14 11:51:49,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79597 conditions, 19867 events. 14288/19867 cut-off events. For 118130/118133 co-relation queries the response was YES. Maximal size of possible extension queue 644. Compared 110433 event pairs, 6710 based on Foata normal form. 12/19860 useless extension candidates. Maximal degree in co-relation 79567. Up to 18893 conditions per place. [2024-06-14 11:51:49,439 INFO L140 encePairwiseOnDemand]: 40/54 looper letters, 116 selfloop transitions, 39 changer transitions 0/161 dead transitions. [2024-06-14 11:51:49,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 161 transitions, 1344 flow [2024-06-14 11:51:49,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:51:49,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:51:49,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 193 transitions. [2024-06-14 11:51:49,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5105820105820106 [2024-06-14 11:51:49,442 INFO L175 Difference]: Start difference. First operand has 82 places, 92 transitions, 590 flow. Second operand 7 states and 193 transitions. [2024-06-14 11:51:49,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 161 transitions, 1344 flow [2024-06-14 11:51:49,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 161 transitions, 1277 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-14 11:51:49,490 INFO L231 Difference]: Finished difference. Result has 87 places, 114 transitions, 859 flow [2024-06-14 11:51:49,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=859, PETRI_PLACES=87, PETRI_TRANSITIONS=114} [2024-06-14 11:51:49,491 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 30 predicate places. [2024-06-14 11:51:49,491 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 114 transitions, 859 flow [2024-06-14 11:51:49,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:49,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:49,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:51:49,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 11:51:49,492 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)] === [2024-06-14 11:51:49,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:49,492 INFO L85 PathProgramCache]: Analyzing trace with hash -411071277, now seen corresponding path program 2 times [2024-06-14 11:51:49,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:49,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367124680] [2024-06-14 11:51:49,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:49,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:49,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:50,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:50,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:50,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367124680] [2024-06-14 11:51:50,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367124680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:50,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:50,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:51:50,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272339559] [2024-06-14 11:51:50,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:50,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:51:50,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:50,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:51:50,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:51:50,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-14 11:51:50,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 114 transitions, 859 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:50,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:50,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-14 11:51:50,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:52,837 INFO L124 PetriNetUnfolderBase]: 13572/19128 cut-off events. [2024-06-14 11:51:52,837 INFO L125 PetriNetUnfolderBase]: For 148130/148298 co-relation queries the response was YES. [2024-06-14 11:51:52,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84462 conditions, 19128 events. 13572/19128 cut-off events. For 148130/148298 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 109797 event pairs, 6345 based on Foata normal form. 15/18968 useless extension candidates. Maximal degree in co-relation 84428. Up to 18090 conditions per place. [2024-06-14 11:51:53,007 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 109 selfloop transitions, 35 changer transitions 0/159 dead transitions. [2024-06-14 11:51:53,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 159 transitions, 1417 flow [2024-06-14 11:51:53,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:51:53,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:51:53,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 187 transitions. [2024-06-14 11:51:53,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947089947089947 [2024-06-14 11:51:53,009 INFO L175 Difference]: Start difference. First operand has 87 places, 114 transitions, 859 flow. Second operand 7 states and 187 transitions. [2024-06-14 11:51:53,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 159 transitions, 1417 flow [2024-06-14 11:51:53,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 159 transitions, 1361 flow, removed 27 selfloop flow, removed 1 redundant places. [2024-06-14 11:51:53,065 INFO L231 Difference]: Finished difference. Result has 93 places, 122 transitions, 1008 flow [2024-06-14 11:51:53,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=803, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1008, PETRI_PLACES=93, PETRI_TRANSITIONS=122} [2024-06-14 11:51:53,066 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 36 predicate places. [2024-06-14 11:51:53,066 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 122 transitions, 1008 flow [2024-06-14 11:51:53,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:53,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:53,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:51:53,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 11:51:53,067 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 11:51:53,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:53,067 INFO L85 PathProgramCache]: Analyzing trace with hash -510899445, now seen corresponding path program 2 times [2024-06-14 11:51:53,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:53,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335242104] [2024-06-14 11:51:53,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:53,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:53,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:54,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:54,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:54,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335242104] [2024-06-14 11:51:54,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335242104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:54,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:54,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:51:54,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327228959] [2024-06-14 11:51:54,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:54,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:51:54,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:54,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:51:54,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:51:54,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-14 11:51:54,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 122 transitions, 1008 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:54,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:54,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-14 11:51:54,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:56,623 INFO L124 PetriNetUnfolderBase]: 14396/20008 cut-off events. [2024-06-14 11:51:56,624 INFO L125 PetriNetUnfolderBase]: For 184581/184584 co-relation queries the response was YES. [2024-06-14 11:51:56,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92920 conditions, 20008 events. 14396/20008 cut-off events. For 184581/184584 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 111111 event pairs, 6885 based on Foata normal form. 12/20004 useless extension candidates. Maximal degree in co-relation 92883. Up to 19274 conditions per place. [2024-06-14 11:51:56,757 INFO L140 encePairwiseOnDemand]: 40/54 looper letters, 132 selfloop transitions, 27 changer transitions 0/165 dead transitions. [2024-06-14 11:51:56,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 165 transitions, 1575 flow [2024-06-14 11:51:56,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:51:56,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:51:56,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-14 11:51:56,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47883597883597884 [2024-06-14 11:51:56,758 INFO L175 Difference]: Start difference. First operand has 93 places, 122 transitions, 1008 flow. Second operand 7 states and 181 transitions. [2024-06-14 11:51:56,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 165 transitions, 1575 flow [2024-06-14 11:51:56,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 165 transitions, 1499 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-14 11:51:56,855 INFO L231 Difference]: Finished difference. Result has 98 places, 129 transitions, 1086 flow [2024-06-14 11:51:56,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=932, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1086, PETRI_PLACES=98, PETRI_TRANSITIONS=129} [2024-06-14 11:51:56,856 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 41 predicate places. [2024-06-14 11:51:56,856 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 129 transitions, 1086 flow [2024-06-14 11:51:56,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:56,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:56,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:51:56,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 11:51:56,857 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)] === [2024-06-14 11:51:56,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:56,857 INFO L85 PathProgramCache]: Analyzing trace with hash -404642187, now seen corresponding path program 3 times [2024-06-14 11:51:56,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:56,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251010614] [2024-06-14 11:51:56,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:56,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:56,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:57,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:57,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:57,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251010614] [2024-06-14 11:51:57,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251010614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:57,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:57,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:51:57,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133161632] [2024-06-14 11:51:57,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:57,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:51:57,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:57,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:51:57,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:51:57,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-14 11:51:57,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 129 transitions, 1086 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:57,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:57,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-14 11:51:57,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:00,146 INFO L124 PetriNetUnfolderBase]: 13643/19225 cut-off events. [2024-06-14 11:52:00,147 INFO L125 PetriNetUnfolderBase]: For 200730/200868 co-relation queries the response was YES. [2024-06-14 11:52:00,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91623 conditions, 19225 events. 13643/19225 cut-off events. For 200730/200868 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 110284 event pairs, 6329 based on Foata normal form. 7/19062 useless extension candidates. Maximal degree in co-relation 91583. Up to 18265 conditions per place. [2024-06-14 11:52:00,287 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 126 selfloop transitions, 18 changer transitions 0/160 dead transitions. [2024-06-14 11:52:00,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 160 transitions, 1454 flow [2024-06-14 11:52:00,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:52:00,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:52:00,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-14 11:52:00,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46825396825396826 [2024-06-14 11:52:00,289 INFO L175 Difference]: Start difference. First operand has 98 places, 129 transitions, 1086 flow. Second operand 7 states and 177 transitions. [2024-06-14 11:52:00,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 160 transitions, 1454 flow [2024-06-14 11:52:00,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 160 transitions, 1342 flow, removed 33 selfloop flow, removed 4 redundant places. [2024-06-14 11:52:00,396 INFO L231 Difference]: Finished difference. Result has 101 places, 129 transitions, 1021 flow [2024-06-14 11:52:00,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=974, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1021, PETRI_PLACES=101, PETRI_TRANSITIONS=129} [2024-06-14 11:52:00,397 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 44 predicate places. [2024-06-14 11:52:00,397 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 129 transitions, 1021 flow [2024-06-14 11:52:00,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:00,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:00,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:52:00,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 11:52:00,397 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)] === [2024-06-14 11:52:00,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:00,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1266489761, now seen corresponding path program 3 times [2024-06-14 11:52:00,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:00,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486953701] [2024-06-14 11:52:00,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:00,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:00,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:01,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:52:01,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:01,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486953701] [2024-06-14 11:52:01,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486953701] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:01,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:01,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:52:01,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542474621] [2024-06-14 11:52:01,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:01,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:52:01,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:01,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:52:01,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:52:01,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-14 11:52:01,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 129 transitions, 1021 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:01,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:01,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-14 11:52:01,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:03,716 INFO L124 PetriNetUnfolderBase]: 14411/20028 cut-off events. [2024-06-14 11:52:03,716 INFO L125 PetriNetUnfolderBase]: For 224344/224347 co-relation queries the response was YES. [2024-06-14 11:52:03,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96650 conditions, 20028 events. 14411/20028 cut-off events. For 224344/224347 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 111299 event pairs, 6878 based on Foata normal form. 12/20024 useless extension candidates. Maximal degree in co-relation 96610. Up to 19163 conditions per place. [2024-06-14 11:52:03,846 INFO L140 encePairwiseOnDemand]: 40/54 looper letters, 135 selfloop transitions, 36 changer transitions 0/177 dead transitions. [2024-06-14 11:52:03,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 177 transitions, 1738 flow [2024-06-14 11:52:03,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:52:03,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:52:03,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 185 transitions. [2024-06-14 11:52:03,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894179894179894 [2024-06-14 11:52:03,849 INFO L175 Difference]: Start difference. First operand has 101 places, 129 transitions, 1021 flow. Second operand 7 states and 185 transitions. [2024-06-14 11:52:03,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 177 transitions, 1738 flow [2024-06-14 11:52:03,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 177 transitions, 1677 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-14 11:52:03,957 INFO L231 Difference]: Finished difference. Result has 103 places, 138 transitions, 1190 flow [2024-06-14 11:52:03,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=960, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1190, PETRI_PLACES=103, PETRI_TRANSITIONS=138} [2024-06-14 11:52:03,958 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 46 predicate places. [2024-06-14 11:52:03,958 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 138 transitions, 1190 flow [2024-06-14 11:52:03,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:03,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:03,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:52:03,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 11:52:03,959 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)] === [2024-06-14 11:52:03,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:03,959 INFO L85 PathProgramCache]: Analyzing trace with hash -404395923, now seen corresponding path program 1 times [2024-06-14 11:52:03,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:03,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622347104] [2024-06-14 11:52:03,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:03,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:05,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:52:05,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:05,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622347104] [2024-06-14 11:52:05,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622347104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:05,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:05,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:52:05,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803060980] [2024-06-14 11:52:05,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:05,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:52:05,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:05,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:52:05,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:52:05,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-14 11:52:05,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 138 transitions, 1190 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:05,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:05,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-14 11:52:05,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:08,376 INFO L124 PetriNetUnfolderBase]: 14431/20052 cut-off events. [2024-06-14 11:52:08,376 INFO L125 PetriNetUnfolderBase]: For 256332/256335 co-relation queries the response was YES. [2024-06-14 11:52:08,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100144 conditions, 20052 events. 14431/20052 cut-off events. For 256332/256335 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 111236 event pairs, 6711 based on Foata normal form. 12/20049 useless extension candidates. Maximal degree in co-relation 100102. Up to 19278 conditions per place. [2024-06-14 11:52:08,567 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 139 selfloop transitions, 33 changer transitions 0/178 dead transitions. [2024-06-14 11:52:08,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 178 transitions, 1798 flow [2024-06-14 11:52:08,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:52:08,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:52:08,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-14 11:52:08,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-14 11:52:08,569 INFO L175 Difference]: Start difference. First operand has 103 places, 138 transitions, 1190 flow. Second operand 7 states and 182 transitions. [2024-06-14 11:52:08,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 178 transitions, 1798 flow [2024-06-14 11:52:08,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 178 transitions, 1726 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-14 11:52:08,723 INFO L231 Difference]: Finished difference. Result has 107 places, 142 transitions, 1265 flow [2024-06-14 11:52:08,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1118, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1265, PETRI_PLACES=107, PETRI_TRANSITIONS=142} [2024-06-14 11:52:08,724 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 50 predicate places. [2024-06-14 11:52:08,724 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 142 transitions, 1265 flow [2024-06-14 11:52:08,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:08,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:08,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:52:08,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 11:52:08,725 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 11:52:08,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:08,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1300088951, now seen corresponding path program 1 times [2024-06-14 11:52:08,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:08,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842437298] [2024-06-14 11:52:08,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:08,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:08,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:09,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:52:09,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:09,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842437298] [2024-06-14 11:52:09,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842437298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:09,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:09,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:52:09,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192032260] [2024-06-14 11:52:09,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:09,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:52:09,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:09,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:52:09,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:52:09,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-14 11:52:09,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 142 transitions, 1265 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:09,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:09,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-14 11:52:09,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:11,913 INFO L124 PetriNetUnfolderBase]: 13720/19338 cut-off events. [2024-06-14 11:52:11,913 INFO L125 PetriNetUnfolderBase]: For 284339/284339 co-relation queries the response was YES. [2024-06-14 11:52:12,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101216 conditions, 19338 events. 13720/19338 cut-off events. For 284339/284339 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 110532 event pairs, 6871 based on Foata normal form. 2/19325 useless extension candidates. Maximal degree in co-relation 101172. Up to 18485 conditions per place. [2024-06-14 11:52:12,123 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 130 selfloop transitions, 10 changer transitions 0/156 dead transitions. [2024-06-14 11:52:12,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 156 transitions, 1581 flow [2024-06-14 11:52:12,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 11:52:12,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 11:52:12,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-06-14 11:52:12,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-14 11:52:12,125 INFO L175 Difference]: Start difference. First operand has 107 places, 142 transitions, 1265 flow. Second operand 5 states and 125 transitions. [2024-06-14 11:52:12,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 156 transitions, 1581 flow [2024-06-14 11:52:12,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 156 transitions, 1450 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-14 11:52:12,664 INFO L231 Difference]: Finished difference. Result has 107 places, 142 transitions, 1163 flow [2024-06-14 11:52:12,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1134, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1163, PETRI_PLACES=107, PETRI_TRANSITIONS=142} [2024-06-14 11:52:12,665 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 50 predicate places. [2024-06-14 11:52:12,665 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 142 transitions, 1163 flow [2024-06-14 11:52:12,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:12,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:12,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:52:12,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 11:52:12,682 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 11:52:12,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:12,682 INFO L85 PathProgramCache]: Analyzing trace with hash -858923690, now seen corresponding path program 1 times [2024-06-14 11:52:12,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:12,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471893192] [2024-06-14 11:52:12,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:12,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:12,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:14,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:52:14,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:14,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471893192] [2024-06-14 11:52:14,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471893192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:14,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:14,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:52:14,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83131658] [2024-06-14 11:52:14,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:14,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:52:14,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:14,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:52:14,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:52:14,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-14 11:52:14,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 142 transitions, 1163 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:14,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:14,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-14 11:52:14,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:16,722 INFO L124 PetriNetUnfolderBase]: 13777/19383 cut-off events. [2024-06-14 11:52:16,722 INFO L125 PetriNetUnfolderBase]: For 307491/307589 co-relation queries the response was YES. [2024-06-14 11:52:16,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102155 conditions, 19383 events. 13777/19383 cut-off events. For 307491/307589 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 110592 event pairs, 6271 based on Foata normal form. 17/19285 useless extension candidates. Maximal degree in co-relation 102110. Up to 18259 conditions per place. [2024-06-14 11:52:16,852 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 155 selfloop transitions, 26 changer transitions 0/200 dead transitions. [2024-06-14 11:52:16,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 200 transitions, 1737 flow [2024-06-14 11:52:16,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:52:16,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:52:16,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-06-14 11:52:16,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-14 11:52:16,853 INFO L175 Difference]: Start difference. First operand has 107 places, 142 transitions, 1163 flow. Second operand 9 states and 234 transitions. [2024-06-14 11:52:16,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 200 transitions, 1737 flow [2024-06-14 11:52:16,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 200 transitions, 1708 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-14 11:52:16,998 INFO L231 Difference]: Finished difference. Result has 112 places, 146 transitions, 1278 flow [2024-06-14 11:52:16,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1134, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1278, PETRI_PLACES=112, PETRI_TRANSITIONS=146} [2024-06-14 11:52:16,999 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 55 predicate places. [2024-06-14 11:52:16,999 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 146 transitions, 1278 flow [2024-06-14 11:52:16,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:16,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:16,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:52:16,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 11:52:16,999 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)] === [2024-06-14 11:52:17,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:17,000 INFO L85 PathProgramCache]: Analyzing trace with hash -858833325, now seen corresponding path program 1 times [2024-06-14 11:52:17,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:17,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873810636] [2024-06-14 11:52:17,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:17,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:17,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:18,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:52:18,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:18,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873810636] [2024-06-14 11:52:18,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873810636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:18,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:18,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:52:18,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395254408] [2024-06-14 11:52:18,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:18,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:52:18,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:18,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:52:18,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:52:18,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-14 11:52:18,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 146 transitions, 1278 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:18,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:18,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-14 11:52:18,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:21,037 INFO L124 PetriNetUnfolderBase]: 14601/20229 cut-off events. [2024-06-14 11:52:21,037 INFO L125 PetriNetUnfolderBase]: For 354060/354063 co-relation queries the response was YES. [2024-06-14 11:52:21,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111197 conditions, 20229 events. 14601/20229 cut-off events. For 354060/354063 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 111906 event pairs, 6598 based on Foata normal form. 12/20230 useless extension candidates. Maximal degree in co-relation 111152. Up to 19483 conditions per place. [2024-06-14 11:52:21,185 INFO L140 encePairwiseOnDemand]: 40/54 looper letters, 170 selfloop transitions, 36 changer transitions 0/212 dead transitions. [2024-06-14 11:52:21,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 212 transitions, 2228 flow [2024-06-14 11:52:21,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:52:21,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:52:21,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 214 transitions. [2024-06-14 11:52:21,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49537037037037035 [2024-06-14 11:52:21,187 INFO L175 Difference]: Start difference. First operand has 112 places, 146 transitions, 1278 flow. Second operand 8 states and 214 transitions. [2024-06-14 11:52:21,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 212 transitions, 2228 flow [2024-06-14 11:52:21,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 212 transitions, 2118 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-14 11:52:21,342 INFO L231 Difference]: Finished difference. Result has 115 places, 160 transitions, 1487 flow [2024-06-14 11:52:21,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1168, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1487, PETRI_PLACES=115, PETRI_TRANSITIONS=160} [2024-06-14 11:52:21,342 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 58 predicate places. [2024-06-14 11:52:21,342 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 160 transitions, 1487 flow [2024-06-14 11:52:21,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:21,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:21,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:52:21,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 11:52:21,343 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)] === [2024-06-14 11:52:21,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:21,343 INFO L85 PathProgramCache]: Analyzing trace with hash -855108675, now seen corresponding path program 2 times [2024-06-14 11:52:21,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:21,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608013028] [2024-06-14 11:52:21,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:21,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:21,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:22,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:52:22,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:22,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608013028] [2024-06-14 11:52:22,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608013028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:22,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:22,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:52:22,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255667445] [2024-06-14 11:52:22,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:22,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:52:22,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:22,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:52:22,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:52:22,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-14 11:52:22,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 160 transitions, 1487 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:22,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:22,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-14 11:52:22,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:25,315 INFO L124 PetriNetUnfolderBase]: 14918/20650 cut-off events. [2024-06-14 11:52:25,316 INFO L125 PetriNetUnfolderBase]: For 419573/419582 co-relation queries the response was YES. [2024-06-14 11:52:25,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121146 conditions, 20650 events. 14918/20650 cut-off events. For 419573/419582 co-relation queries the response was YES. Maximal size of possible extension queue 644. Compared 114123 event pairs, 6388 based on Foata normal form. 16/20649 useless extension candidates. Maximal degree in co-relation 121098. Up to 19132 conditions per place. [2024-06-14 11:52:25,517 INFO L140 encePairwiseOnDemand]: 39/54 looper letters, 143 selfloop transitions, 87 changer transitions 0/236 dead transitions. [2024-06-14 11:52:25,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 236 transitions, 2805 flow [2024-06-14 11:52:25,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:52:25,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:52:25,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 224 transitions. [2024-06-14 11:52:25,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-06-14 11:52:25,519 INFO L175 Difference]: Start difference. First operand has 115 places, 160 transitions, 1487 flow. Second operand 8 states and 224 transitions. [2024-06-14 11:52:25,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 236 transitions, 2805 flow [2024-06-14 11:52:25,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 236 transitions, 2632 flow, removed 55 selfloop flow, removed 4 redundant places. [2024-06-14 11:52:25,787 INFO L231 Difference]: Finished difference. Result has 121 places, 179 transitions, 1873 flow [2024-06-14 11:52:25,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1314, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1873, PETRI_PLACES=121, PETRI_TRANSITIONS=179} [2024-06-14 11:52:25,787 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 64 predicate places. [2024-06-14 11:52:25,787 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 179 transitions, 1873 flow [2024-06-14 11:52:25,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:25,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:25,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:52:25,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 11:52:25,788 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)] === [2024-06-14 11:52:25,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:25,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1367096771, now seen corresponding path program 3 times [2024-06-14 11:52:25,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:25,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931787559] [2024-06-14 11:52:25,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:25,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:25,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:26,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:52:26,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:26,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931787559] [2024-06-14 11:52:26,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931787559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:26,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:26,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:52:26,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911246799] [2024-06-14 11:52:26,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:26,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:52:26,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:26,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:52:26,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:52:27,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-14 11:52:27,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 179 transitions, 1873 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:27,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:27,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-14 11:52:27,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:29,821 INFO L124 PetriNetUnfolderBase]: 14896/20622 cut-off events. [2024-06-14 11:52:29,821 INFO L125 PetriNetUnfolderBase]: For 485399/485408 co-relation queries the response was YES. [2024-06-14 11:52:29,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127907 conditions, 20622 events. 14896/20622 cut-off events. For 485399/485408 co-relation queries the response was YES. Maximal size of possible extension queue 644. Compared 114034 event pairs, 6391 based on Foata normal form. 16/20621 useless extension candidates. Maximal degree in co-relation 127856. Up to 19121 conditions per place. [2024-06-14 11:52:30,017 INFO L140 encePairwiseOnDemand]: 39/54 looper letters, 147 selfloop transitions, 82 changer transitions 0/235 dead transitions. [2024-06-14 11:52:30,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 235 transitions, 2869 flow [2024-06-14 11:52:30,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:52:30,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:52:30,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 223 transitions. [2024-06-14 11:52:30,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5162037037037037 [2024-06-14 11:52:30,019 INFO L175 Difference]: Start difference. First operand has 121 places, 179 transitions, 1873 flow. Second operand 8 states and 223 transitions. [2024-06-14 11:52:30,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 235 transitions, 2869 flow [2024-06-14 11:52:30,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 235 transitions, 2681 flow, removed 85 selfloop flow, removed 2 redundant places. [2024-06-14 11:52:30,399 INFO L231 Difference]: Finished difference. Result has 127 places, 179 transitions, 1866 flow [2024-06-14 11:52:30,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1689, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1866, PETRI_PLACES=127, PETRI_TRANSITIONS=179} [2024-06-14 11:52:30,399 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 70 predicate places. [2024-06-14 11:52:30,399 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 179 transitions, 1866 flow [2024-06-14 11:52:30,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:30,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:30,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:52:30,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 11:52:30,400 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)] === [2024-06-14 11:52:30,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:30,400 INFO L85 PathProgramCache]: Analyzing trace with hash -855114410, now seen corresponding path program 2 times [2024-06-14 11:52:30,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:30,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32025770] [2024-06-14 11:52:30,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:30,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:30,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:31,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:52:31,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:31,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32025770] [2024-06-14 11:52:31,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32025770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:31,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:31,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:52:31,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149191406] [2024-06-14 11:52:31,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:31,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:52:31,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:31,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:52:31,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:52:32,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-14 11:52:32,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 179 transitions, 1866 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:32,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:32,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-14 11:52:32,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:34,995 INFO L124 PetriNetUnfolderBase]: 14350/20086 cut-off events. [2024-06-14 11:52:34,995 INFO L125 PetriNetUnfolderBase]: For 486600/486787 co-relation queries the response was YES. [2024-06-14 11:52:35,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122244 conditions, 20086 events. 14350/20086 cut-off events. For 486600/486787 co-relation queries the response was YES. Maximal size of possible extension queue 670. Compared 114087 event pairs, 6240 based on Foata normal form. 27/19921 useless extension candidates. Maximal degree in co-relation 122191. Up to 18868 conditions per place. [2024-06-14 11:52:35,193 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 159 selfloop transitions, 39 changer transitions 0/224 dead transitions. [2024-06-14 11:52:35,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 224 transitions, 2456 flow [2024-06-14 11:52:35,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:52:35,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:52:35,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-14 11:52:35,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-14 11:52:35,195 INFO L175 Difference]: Start difference. First operand has 127 places, 179 transitions, 1866 flow. Second operand 8 states and 208 transitions. [2024-06-14 11:52:35,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 224 transitions, 2456 flow [2024-06-14 11:52:35,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 224 transitions, 2232 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-14 11:52:35,363 INFO L231 Difference]: Finished difference. Result has 127 places, 183 transitions, 1827 flow [2024-06-14 11:52:35,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1642, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1827, PETRI_PLACES=127, PETRI_TRANSITIONS=183} [2024-06-14 11:52:35,364 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 70 predicate places. [2024-06-14 11:52:35,364 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 183 transitions, 1827 flow [2024-06-14 11:52:35,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:35,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:35,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:52:35,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 11:52:35,365 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 11:52:35,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:35,365 INFO L85 PathProgramCache]: Analyzing trace with hash -602097215, now seen corresponding path program 4 times [2024-06-14 11:52:35,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:35,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17719334] [2024-06-14 11:52:35,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:35,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:35,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:36,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:52:36,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:36,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17719334] [2024-06-14 11:52:36,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17719334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:36,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:36,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:52:36,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715782892] [2024-06-14 11:52:36,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:36,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:52:36,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:36,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:52:36,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:52:36,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-14 11:52:36,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 183 transitions, 1827 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:36,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:36,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-14 11:52:36,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:39,519 INFO L124 PetriNetUnfolderBase]: 15004/20786 cut-off events. [2024-06-14 11:52:39,519 INFO L125 PetriNetUnfolderBase]: For 537229/537232 co-relation queries the response was YES. [2024-06-14 11:52:39,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129469 conditions, 20786 events. 15004/20786 cut-off events. For 537229/537232 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 115184 event pairs, 6645 based on Foata normal form. 12/20785 useless extension candidates. Maximal degree in co-relation 129417. Up to 20026 conditions per place. [2024-06-14 11:52:39,686 INFO L140 encePairwiseOnDemand]: 39/54 looper letters, 192 selfloop transitions, 32 changer transitions 0/230 dead transitions. [2024-06-14 11:52:39,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 230 transitions, 2565 flow [2024-06-14 11:52:39,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:52:39,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:52:39,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-14 11:52:39,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-14 11:52:39,688 INFO L175 Difference]: Start difference. First operand has 127 places, 183 transitions, 1827 flow. Second operand 8 states and 204 transitions. [2024-06-14 11:52:39,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 230 transitions, 2565 flow [2024-06-14 11:52:39,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 230 transitions, 2412 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-14 11:52:39,902 INFO L231 Difference]: Finished difference. Result has 129 places, 188 transitions, 1856 flow [2024-06-14 11:52:39,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1674, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1856, PETRI_PLACES=129, PETRI_TRANSITIONS=188} [2024-06-14 11:52:39,903 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 72 predicate places. [2024-06-14 11:52:39,903 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 188 transitions, 1856 flow [2024-06-14 11:52:39,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:39,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:39,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:52:39,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 11:52:39,904 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 11:52:39,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:39,904 INFO L85 PathProgramCache]: Analyzing trace with hash 340995569, now seen corresponding path program 5 times [2024-06-14 11:52:39,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:39,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119821356] [2024-06-14 11:52:39,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:39,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:39,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:41,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:52:41,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:41,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119821356] [2024-06-14 11:52:41,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119821356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:41,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:41,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:52:41,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55140512] [2024-06-14 11:52:41,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:41,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:52:41,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:41,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:52:41,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:52:41,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-14 11:52:41,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 188 transitions, 1856 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:41,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:41,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-14 11:52:41,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:44,256 INFO L124 PetriNetUnfolderBase]: 15090/20902 cut-off events. [2024-06-14 11:52:44,257 INFO L125 PetriNetUnfolderBase]: For 581950/581953 co-relation queries the response was YES. [2024-06-14 11:52:44,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132689 conditions, 20902 events. 15090/20902 cut-off events. For 581950/581953 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 115623 event pairs, 6631 based on Foata normal form. 12/20901 useless extension candidates. Maximal degree in co-relation 132636. Up to 19798 conditions per place. [2024-06-14 11:52:44,461 INFO L140 encePairwiseOnDemand]: 39/54 looper letters, 187 selfloop transitions, 50 changer transitions 0/243 dead transitions. [2024-06-14 11:52:44,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 243 transitions, 2926 flow [2024-06-14 11:52:44,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:52:44,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:52:44,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-06-14 11:52:44,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49074074074074076 [2024-06-14 11:52:44,463 INFO L175 Difference]: Start difference. First operand has 129 places, 188 transitions, 1856 flow. Second operand 8 states and 212 transitions. [2024-06-14 11:52:44,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 243 transitions, 2926 flow [2024-06-14 11:52:44,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 243 transitions, 2790 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-14 11:52:44,794 INFO L231 Difference]: Finished difference. Result has 132 places, 194 transitions, 1980 flow [2024-06-14 11:52:44,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1720, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1980, PETRI_PLACES=132, PETRI_TRANSITIONS=194} [2024-06-14 11:52:44,795 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 75 predicate places. [2024-06-14 11:52:44,795 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 194 transitions, 1980 flow [2024-06-14 11:52:44,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:44,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:44,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:52:44,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 11:52:44,796 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 11:52:44,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:44,796 INFO L85 PathProgramCache]: Analyzing trace with hash -599116328, now seen corresponding path program 1 times [2024-06-14 11:52:44,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:44,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002221393] [2024-06-14 11:52:44,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:44,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:44,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:45,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:52:45,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:45,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002221393] [2024-06-14 11:52:45,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002221393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:45,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:45,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:52:45,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583308866] [2024-06-14 11:52:45,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:45,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:52:45,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:45,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:52:45,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:52:46,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-14 11:52:46,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 194 transitions, 1980 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:46,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:46,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-14 11:52:46,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:49,393 INFO L124 PetriNetUnfolderBase]: 15102/20938 cut-off events. [2024-06-14 11:52:49,394 INFO L125 PetriNetUnfolderBase]: For 629831/629834 co-relation queries the response was YES. [2024-06-14 11:52:49,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135811 conditions, 20938 events. 15102/20938 cut-off events. For 629831/629834 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 116051 event pairs, 6561 based on Foata normal form. 7/20941 useless extension candidates. Maximal degree in co-relation 135756. Up to 20155 conditions per place. [2024-06-14 11:52:49,577 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 188 selfloop transitions, 39 changer transitions 0/233 dead transitions. [2024-06-14 11:52:49,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 233 transitions, 2710 flow [2024-06-14 11:52:49,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:52:49,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:52:49,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-14 11:52:49,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47883597883597884 [2024-06-14 11:52:49,579 INFO L175 Difference]: Start difference. First operand has 132 places, 194 transitions, 1980 flow. Second operand 7 states and 181 transitions. [2024-06-14 11:52:49,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 233 transitions, 2710 flow [2024-06-14 11:52:49,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 233 transitions, 2459 flow, removed 54 selfloop flow, removed 7 redundant places. [2024-06-14 11:52:49,906 INFO L231 Difference]: Finished difference. Result has 132 places, 199 transitions, 1931 flow [2024-06-14 11:52:49,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1729, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1931, PETRI_PLACES=132, PETRI_TRANSITIONS=199} [2024-06-14 11:52:49,907 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 75 predicate places. [2024-06-14 11:52:49,907 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 199 transitions, 1931 flow [2024-06-14 11:52:49,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:49,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:49,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:52:49,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-14 11:52:49,908 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)] === [2024-06-14 11:52:49,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:49,910 INFO L85 PathProgramCache]: Analyzing trace with hash -606475635, now seen corresponding path program 6 times [2024-06-14 11:52:49,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:49,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10378121] [2024-06-14 11:52:49,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:49,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:49,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:51,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:52:51,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:51,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10378121] [2024-06-14 11:52:51,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10378121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:51,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:51,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:52:51,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034521666] [2024-06-14 11:52:51,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:51,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:52:51,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:51,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:52:51,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:52:51,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-14 11:52:51,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 199 transitions, 1931 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:51,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:51,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-14 11:52:51,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand