./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix027_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix027_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de 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/mix027_tso.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix027_tso.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-7724a2d-m [2024-06-28 03:13:28,469 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:13:28,506 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:13:28,510 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:13:28,510 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:13:28,526 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:13:28,532 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:13:28,532 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:13:28,533 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:13:28,533 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:13:28,533 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:13:28,533 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:13:28,534 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:13:28,534 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:13:28,534 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:13:28,535 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:13:28,535 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:13:28,535 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:13:28,535 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:13:28,535 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:13:28,536 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:13:28,539 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:13:28,539 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:13:28,539 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:13:28,539 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:13:28,540 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:13:28,540 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:13:28,540 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:13:28,540 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:13:28,541 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:13:28,541 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:13:28,542 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:13:28,542 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:13:28,542 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:13:28,542 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:13:28,542 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:13:28,543 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:13:28,543 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:13:28,543 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:13:28,543 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:13:28,543 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:13:28,544 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:13:28,544 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:13:28,544 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:13:28,724 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:13:28,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:13:28,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:13:28,748 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:13:28,748 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:13:28,749 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix027_tso.i [2024-06-28 03:13:29,766 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:13:29,948 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:13:29,949 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix027_tso.i [2024-06-28 03:13:29,968 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5f27fecf/602e722c81c9414aa402cf01ee39745b/FLAG13f223218 [2024-06-28 03:13:29,981 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5f27fecf/602e722c81c9414aa402cf01ee39745b [2024-06-28 03:13:29,983 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:13:29,984 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:13:29,985 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix027_tso.yml/witness.yml [2024-06-28 03:13:30,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:13:30,139 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:13:30,140 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:13:30,141 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:13:30,144 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:13:30,145 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:13:29" (1/2) ... [2024-06-28 03:13:30,146 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36c51595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:13:30, skipping insertion in model container [2024-06-28 03:13:30,146 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:13:29" (1/2) ... [2024-06-28 03:13:30,147 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@61d88d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:13:30, skipping insertion in model container [2024-06-28 03:13:30,148 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:13:30" (2/2) ... [2024-06-28 03:13:30,148 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36c51595 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:13:30, skipping insertion in model container [2024-06-28 03:13:30,149 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:13:30" (2/2) ... [2024-06-28 03:13:30,149 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:13:30,250 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:13:30,251 INFO L97 edCorrectnessWitness]: Location invariant before [L858-L858] (((((((((((((((((((((! multithreaded || x$r_buff0_thd4 == (_Bool)0) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff0_thd4 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$r_buff1_thd4 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0) [2024-06-28 03:13:30,251 INFO L97 edCorrectnessWitness]: Location invariant before [L854-L854] (((((((((((((((((((((! multithreaded || x$r_buff0_thd4 == (_Bool)0) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff0_thd4 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$r_buff1_thd4 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0) [2024-06-28 03:13:30,251 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] (((((((((((((((((((((! multithreaded || x$r_buff0_thd4 == (_Bool)0) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff0_thd4 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$r_buff1_thd4 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0) [2024-06-28 03:13:30,252 INFO L97 edCorrectnessWitness]: Location invariant before [L859-L859] (((((((((((((((((((((! multithreaded || x$r_buff0_thd4 == (_Bool)0) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff0_thd4 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$r_buff1_thd4 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0) [2024-06-28 03:13:30,252 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:13:30,253 INFO L106 edCorrectnessWitness]: ghost_update [L852-L852] multithreaded = 1; [2024-06-28 03:13:30,289 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:13:30,586 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:13:30,594 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:13:30,723 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:13:30,758 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:13:30,759 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:13:30 WrapperNode [2024-06-28 03:13:30,763 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:13:30,763 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:13:30,764 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:13:30,764 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:13:30,769 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:13:30" (1/1) ... [2024-06-28 03:13:30,782 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:13:30" (1/1) ... [2024-06-28 03:13:30,814 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 157 [2024-06-28 03:13:30,815 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:13:30,815 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:13:30,815 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:13:30,815 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:13:30,824 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:13:30" (1/1) ... [2024-06-28 03:13:30,824 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:13:30" (1/1) ... [2024-06-28 03:13:30,828 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:13:30" (1/1) ... [2024-06-28 03:13:30,841 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]. [2024-06-28 03:13:30,842 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:13:30" (1/1) ... [2024-06-28 03:13:30,842 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:13:30" (1/1) ... [2024-06-28 03:13:30,851 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:13:30" (1/1) ... [2024-06-28 03:13:30,853 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:13:30" (1/1) ... [2024-06-28 03:13:30,855 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:13:30" (1/1) ... [2024-06-28 03:13:30,856 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:13:30" (1/1) ... [2024-06-28 03:13:30,859 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:13:30,860 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:13:30,860 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:13:30,860 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:13:30,861 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:13:30" (1/1) ... [2024-06-28 03:13:30,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:13:30,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:13:30,883 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) [2024-06-28 03:13:30,910 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 [2024-06-28 03:13:30,924 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:13:30,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:13:30,924 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:13:30,925 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:13:30,925 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:13:30,925 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:13:30,925 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 03:13:30,925 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 03:13:30,925 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-28 03:13:30,926 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-28 03:13:30,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:13:30,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:13:30,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:13:30,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:13:30,927 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 03:13:31,022 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:13:31,024 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:13:31,437 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:13:31,437 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:13:31,606 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:13:31,606 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:13:31,607 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:13:31 BoogieIcfgContainer [2024-06-28 03:13:31,607 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:13:31,610 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:13:31,610 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:13:31,613 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:13:31,613 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:13:29" (1/4) ... [2024-06-28 03:13:31,614 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20637934 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:13:31, skipping insertion in model container [2024-06-28 03:13:31,614 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:13:30" (2/4) ... [2024-06-28 03:13:31,614 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20637934 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:13:31, skipping insertion in model container [2024-06-28 03:13:31,614 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:13:30" (3/4) ... [2024-06-28 03:13:31,615 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20637934 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:13:31, skipping insertion in model container [2024-06-28 03:13:31,615 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:13:31" (4/4) ... [2024-06-28 03:13:31,616 INFO L112 eAbstractionObserver]: Analyzing ICFG mix027_tso.i [2024-06-28 03:13:31,629 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:13:31,630 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 03:13:31,630 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:13:31,672 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:13:31,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 52 transitions, 120 flow [2024-06-28 03:13:31,735 INFO L124 PetriNetUnfolderBase]: 0/48 cut-off events. [2024-06-28 03:13:31,736 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:13:31,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 0/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 89 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 03:13:31,738 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 52 transitions, 120 flow [2024-06-28 03:13:31,741 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 42 transitions, 96 flow [2024-06-28 03:13:31,753 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:13:31,757 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;@23fe9369, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:13:31,758 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-28 03:13:31,760 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:13:31,760 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 03:13:31,761 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:13:31,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:31,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:13:31,762 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)] === [2024-06-28 03:13:31,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:31,766 INFO L85 PathProgramCache]: Analyzing trace with hash 398626243, now seen corresponding path program 1 times [2024-06-28 03:13:31,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:31,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675001491] [2024-06-28 03:13:31,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:31,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:32,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:32,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:32,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675001491] [2024-06-28 03:13:32,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675001491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:32,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:32,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:13:32,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880714578] [2024-06-28 03:13:32,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:32,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:13:32,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:32,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:13:32,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:13:32,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-28 03:13:32,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2024-06-28 03:13:32,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:32,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-28 03:13:32,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:34,158 INFO L124 PetriNetUnfolderBase]: 9903/14109 cut-off events. [2024-06-28 03:13:34,158 INFO L125 PetriNetUnfolderBase]: For 214/214 co-relation queries the response was YES. [2024-06-28 03:13:34,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28013 conditions, 14109 events. 9903/14109 cut-off events. For 214/214 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 79714 event pairs, 7667 based on Foata normal form. 1/13684 useless extension candidates. Maximal degree in co-relation 28000. Up to 13453 conditions per place. [2024-06-28 03:13:34,240 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 43 selfloop transitions, 5 changer transitions 0/56 dead transitions. [2024-06-28 03:13:34,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 56 transitions, 229 flow [2024-06-28 03:13:34,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:13:34,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:13:34,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-06-28 03:13:34,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6025641025641025 [2024-06-28 03:13:34,251 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 96 flow. Second operand 3 states and 94 transitions. [2024-06-28 03:13:34,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 56 transitions, 229 flow [2024-06-28 03:13:34,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 56 transitions, 222 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 03:13:34,259 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 131 flow [2024-06-28 03:13:34,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-06-28 03:13:34,263 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -1 predicate places. [2024-06-28 03:13:34,264 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 131 flow [2024-06-28 03:13:34,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2024-06-28 03:13:34,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:34,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:34,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:13:34,265 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)] === [2024-06-28 03:13:34,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:34,266 INFO L85 PathProgramCache]: Analyzing trace with hash 827752098, now seen corresponding path program 1 times [2024-06-28 03:13:34,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:34,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993004924] [2024-06-28 03:13:34,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:34,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:34,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:34,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:34,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:34,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993004924] [2024-06-28 03:13:34,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993004924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:34,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:34,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:13:34,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467040344] [2024-06-28 03:13:34,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:34,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:13:34,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:34,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:13:34,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:13:34,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-28 03:13:34,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2024-06-28 03:13:34,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:34,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-28 03:13:34,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:36,465 INFO L124 PetriNetUnfolderBase]: 11585/16035 cut-off events. [2024-06-28 03:13:36,465 INFO L125 PetriNetUnfolderBase]: For 2898/2898 co-relation queries the response was YES. [2024-06-28 03:13:36,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36154 conditions, 16035 events. 11585/16035 cut-off events. For 2898/2898 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 87100 event pairs, 8249 based on Foata normal form. 4/16036 useless extension candidates. Maximal degree in co-relation 36142. Up to 15650 conditions per place. [2024-06-28 03:13:36,546 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 54 selfloop transitions, 9 changer transitions 0/70 dead transitions. [2024-06-28 03:13:36,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 70 transitions, 323 flow [2024-06-28 03:13:36,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:13:36,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:13:36,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-06-28 03:13:36,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5721153846153846 [2024-06-28 03:13:36,548 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 131 flow. Second operand 4 states and 119 transitions. [2024-06-28 03:13:36,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 70 transitions, 323 flow [2024-06-28 03:13:36,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 70 transitions, 318 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:13:36,551 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 179 flow [2024-06-28 03:13:36,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2024-06-28 03:13:36,551 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2024-06-28 03:13:36,552 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 179 flow [2024-06-28 03:13:36,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2024-06-28 03:13:36,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:36,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:36,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:13:36,553 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)] === [2024-06-28 03:13:36,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:36,553 INFO L85 PathProgramCache]: Analyzing trace with hash -109487992, now seen corresponding path program 1 times [2024-06-28 03:13:36,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:36,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025308257] [2024-06-28 03:13:36,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:36,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:36,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:37,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:37,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:37,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025308257] [2024-06-28 03:13:37,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025308257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:37,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:37,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 03:13:37,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075341376] [2024-06-28 03:13:37,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:37,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 03:13:37,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:37,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 03:13:37,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 03:13:37,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-28 03:13:37,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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) [2024-06-28 03:13:37,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:37,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-28 03:13:37,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:38,714 INFO L124 PetriNetUnfolderBase]: 11565/15993 cut-off events. [2024-06-28 03:13:38,714 INFO L125 PetriNetUnfolderBase]: For 8263/8263 co-relation queries the response was YES. [2024-06-28 03:13:38,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40029 conditions, 15993 events. 11565/15993 cut-off events. For 8263/8263 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 86569 event pairs, 6611 based on Foata normal form. 8/15998 useless extension candidates. Maximal degree in co-relation 40015. Up to 15580 conditions per place. [2024-06-28 03:13:38,790 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 65 selfloop transitions, 13 changer transitions 0/85 dead transitions. [2024-06-28 03:13:38,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 85 transitions, 435 flow [2024-06-28 03:13:38,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:13:38,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:13:38,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 147 transitions. [2024-06-28 03:13:38,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5653846153846154 [2024-06-28 03:13:38,792 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 179 flow. Second operand 5 states and 147 transitions. [2024-06-28 03:13:38,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 85 transitions, 435 flow [2024-06-28 03:13:38,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 85 transitions, 416 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 03:13:38,798 INFO L231 Difference]: Finished difference. Result has 60 places, 54 transitions, 227 flow [2024-06-28 03:13:38,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=227, PETRI_PLACES=60, PETRI_TRANSITIONS=54} [2024-06-28 03:13:38,800 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 5 predicate places. [2024-06-28 03:13:38,800 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 54 transitions, 227 flow [2024-06-28 03:13:38,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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) [2024-06-28 03:13:38,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:38,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:38,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:13:38,800 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)] === [2024-06-28 03:13:38,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:38,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1280440429, now seen corresponding path program 1 times [2024-06-28 03:13:38,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:38,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509891393] [2024-06-28 03:13:38,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:38,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:38,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:39,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:39,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:39,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509891393] [2024-06-28 03:13:39,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509891393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:39,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:39,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:13:39,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027789193] [2024-06-28 03:13:39,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:39,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:13:39,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:39,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:13:39,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:13:40,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-28 03:13:40,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 54 transitions, 227 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 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) [2024-06-28 03:13:40,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:40,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-28 03:13:40,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:41,444 INFO L124 PetriNetUnfolderBase]: 11549/15951 cut-off events. [2024-06-28 03:13:41,444 INFO L125 PetriNetUnfolderBase]: For 15997/15997 co-relation queries the response was YES. [2024-06-28 03:13:41,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43863 conditions, 15951 events. 11549/15951 cut-off events. For 15997/15997 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 86517 event pairs, 5646 based on Foata normal form. 8/15956 useless extension candidates. Maximal degree in co-relation 43848. Up to 15514 conditions per place. [2024-06-28 03:13:41,522 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 72 selfloop transitions, 16 changer transitions 0/95 dead transitions. [2024-06-28 03:13:41,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 95 transitions, 519 flow [2024-06-28 03:13:41,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:13:41,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:13:41,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 170 transitions. [2024-06-28 03:13:41,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5448717948717948 [2024-06-28 03:13:41,524 INFO L175 Difference]: Start difference. First operand has 60 places, 54 transitions, 227 flow. Second operand 6 states and 170 transitions. [2024-06-28 03:13:41,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 95 transitions, 519 flow [2024-06-28 03:13:41,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 95 transitions, 486 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 03:13:41,536 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 258 flow [2024-06-28 03:13:41,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=258, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2024-06-28 03:13:41,538 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2024-06-28 03:13:41,538 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 258 flow [2024-06-28 03:13:41,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 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) [2024-06-28 03:13:41,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:41,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:41,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:13:41,539 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)] === [2024-06-28 03:13:41,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:41,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1950373012, now seen corresponding path program 1 times [2024-06-28 03:13:41,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:41,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675865914] [2024-06-28 03:13:41,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:41,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:41,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:42,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:42,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:42,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675865914] [2024-06-28 03:13:42,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675865914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:42,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:42,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:13:42,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83100750] [2024-06-28 03:13:42,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:42,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:13:42,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:42,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:13:42,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:13:42,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-28 03:13:42,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 258 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 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) [2024-06-28 03:13:42,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:42,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-28 03:13:42,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:43,515 INFO L124 PetriNetUnfolderBase]: 9848/14007 cut-off events. [2024-06-28 03:13:43,515 INFO L125 PetriNetUnfolderBase]: For 21341/21341 co-relation queries the response was YES. [2024-06-28 03:13:43,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41041 conditions, 14007 events. 9848/14007 cut-off events. For 21341/21341 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 78855 event pairs, 5737 based on Foata normal form. 3/13805 useless extension candidates. Maximal degree in co-relation 41024. Up to 13360 conditions per place. [2024-06-28 03:13:43,605 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 59 selfloop transitions, 12 changer transitions 0/78 dead transitions. [2024-06-28 03:13:43,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 78 transitions, 478 flow [2024-06-28 03:13:43,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:13:43,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:13:43,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-06-28 03:13:43,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4326923076923077 [2024-06-28 03:13:43,606 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 258 flow. Second operand 6 states and 135 transitions. [2024-06-28 03:13:43,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 78 transitions, 478 flow [2024-06-28 03:13:43,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 78 transitions, 430 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 03:13:43,612 INFO L231 Difference]: Finished difference. Result has 65 places, 62 transitions, 294 flow [2024-06-28 03:13:43,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=294, PETRI_PLACES=65, PETRI_TRANSITIONS=62} [2024-06-28 03:13:43,612 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 10 predicate places. [2024-06-28 03:13:43,613 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 62 transitions, 294 flow [2024-06-28 03:13:43,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 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) [2024-06-28 03:13:43,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:43,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:43,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:13:43,613 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)] === [2024-06-28 03:13:43,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:43,614 INFO L85 PathProgramCache]: Analyzing trace with hash -899342073, now seen corresponding path program 1 times [2024-06-28 03:13:43,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:43,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197373060] [2024-06-28 03:13:43,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:43,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:43,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:44,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:44,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:44,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197373060] [2024-06-28 03:13:44,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197373060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:44,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:44,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:13:44,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538339988] [2024-06-28 03:13:44,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:44,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:13:44,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:44,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:13:44,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:13:44,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-28 03:13:44,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 62 transitions, 294 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:44,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:44,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-28 03:13:44,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:46,144 INFO L124 PetriNetUnfolderBase]: 11562/15979 cut-off events. [2024-06-28 03:13:46,144 INFO L125 PetriNetUnfolderBase]: For 36139/36139 co-relation queries the response was YES. [2024-06-28 03:13:46,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50856 conditions, 15979 events. 11562/15979 cut-off events. For 36139/36139 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 86497 event pairs, 6742 based on Foata normal form. 3/15979 useless extension candidates. Maximal degree in co-relation 50836. Up to 15601 conditions per place. [2024-06-28 03:13:46,259 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 71 selfloop transitions, 15 changer transitions 0/92 dead transitions. [2024-06-28 03:13:46,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 92 transitions, 568 flow [2024-06-28 03:13:46,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:13:46,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:13:46,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-28 03:13:46,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 03:13:46,263 INFO L175 Difference]: Start difference. First operand has 65 places, 62 transitions, 294 flow. Second operand 6 states and 143 transitions. [2024-06-28 03:13:46,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 92 transitions, 568 flow [2024-06-28 03:13:46,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 92 transitions, 533 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-28 03:13:46,270 INFO L231 Difference]: Finished difference. Result has 68 places, 66 transitions, 340 flow [2024-06-28 03:13:46,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=340, PETRI_PLACES=68, PETRI_TRANSITIONS=66} [2024-06-28 03:13:46,271 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 13 predicate places. [2024-06-28 03:13:46,271 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 66 transitions, 340 flow [2024-06-28 03:13:46,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:46,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:46,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:46,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:13:46,272 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)] === [2024-06-28 03:13:46,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:46,272 INFO L85 PathProgramCache]: Analyzing trace with hash 234342205, now seen corresponding path program 2 times [2024-06-28 03:13:46,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:46,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157317959] [2024-06-28 03:13:46,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:46,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:46,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:46,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:46,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:46,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157317959] [2024-06-28 03:13:46,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157317959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:46,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:46,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:13:46,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284775495] [2024-06-28 03:13:46,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:46,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:13:46,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:46,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:13:46,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:13:47,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-28 03:13:47,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 66 transitions, 340 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:47,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:47,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-28 03:13:47,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:48,270 INFO L124 PetriNetUnfolderBase]: 11553/15976 cut-off events. [2024-06-28 03:13:48,270 INFO L125 PetriNetUnfolderBase]: For 48862/48878 co-relation queries the response was YES. [2024-06-28 03:13:48,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54688 conditions, 15976 events. 11553/15976 cut-off events. For 48862/48878 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 86500 event pairs, 6701 based on Foata normal form. 15/15986 useless extension candidates. Maximal degree in co-relation 54667. Up to 15559 conditions per place. [2024-06-28 03:13:48,371 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 67 selfloop transitions, 21 changer transitions 0/94 dead transitions. [2024-06-28 03:13:48,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 94 transitions, 620 flow [2024-06-28 03:13:48,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:13:48,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:13:48,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-28 03:13:48,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4551282051282051 [2024-06-28 03:13:48,373 INFO L175 Difference]: Start difference. First operand has 68 places, 66 transitions, 340 flow. Second operand 6 states and 142 transitions. [2024-06-28 03:13:48,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 94 transitions, 620 flow [2024-06-28 03:13:48,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 94 transitions, 571 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 03:13:48,383 INFO L231 Difference]: Finished difference. Result has 70 places, 70 transitions, 392 flow [2024-06-28 03:13:48,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=392, PETRI_PLACES=70, PETRI_TRANSITIONS=70} [2024-06-28 03:13:48,385 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 15 predicate places. [2024-06-28 03:13:48,385 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 70 transitions, 392 flow [2024-06-28 03:13:48,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:48,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:48,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:48,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:13:48,386 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)] === [2024-06-28 03:13:48,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:48,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1702748531, now seen corresponding path program 1 times [2024-06-28 03:13:48,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:48,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023289571] [2024-06-28 03:13:48,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:48,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:48,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:49,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:49,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:49,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023289571] [2024-06-28 03:13:49,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023289571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:49,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:49,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:13:49,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696640329] [2024-06-28 03:13:49,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:49,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:13:49,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:49,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:13:49,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:13:49,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-28 03:13:49,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 70 transitions, 392 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 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) [2024-06-28 03:13:49,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:49,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-28 03:13:49,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:51,021 INFO L124 PetriNetUnfolderBase]: 11976/16919 cut-off events. [2024-06-28 03:13:51,022 INFO L125 PetriNetUnfolderBase]: For 63843/63843 co-relation queries the response was YES. [2024-06-28 03:13:51,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60656 conditions, 16919 events. 11976/16919 cut-off events. For 63843/63843 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 94859 event pairs, 6804 based on Foata normal form. 3/16675 useless extension candidates. Maximal degree in co-relation 60634. Up to 16170 conditions per place. [2024-06-28 03:13:51,123 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 83 selfloop transitions, 19 changer transitions 0/108 dead transitions. [2024-06-28 03:13:51,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 108 transitions, 735 flow [2024-06-28 03:13:51,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:13:51,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:13:51,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-06-28 03:13:51,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44505494505494503 [2024-06-28 03:13:51,125 INFO L175 Difference]: Start difference. First operand has 70 places, 70 transitions, 392 flow. Second operand 7 states and 162 transitions. [2024-06-28 03:13:51,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 108 transitions, 735 flow [2024-06-28 03:13:51,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 108 transitions, 661 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 03:13:51,137 INFO L231 Difference]: Finished difference. Result has 74 places, 78 transitions, 443 flow [2024-06-28 03:13:51,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=443, PETRI_PLACES=74, PETRI_TRANSITIONS=78} [2024-06-28 03:13:51,140 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 19 predicate places. [2024-06-28 03:13:51,140 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 78 transitions, 443 flow [2024-06-28 03:13:51,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 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) [2024-06-28 03:13:51,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:51,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:51,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:13:51,140 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)] === [2024-06-28 03:13:51,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:51,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1502577131, now seen corresponding path program 1 times [2024-06-28 03:13:51,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:51,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332817995] [2024-06-28 03:13:51,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:51,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:51,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:51,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:51,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:51,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332817995] [2024-06-28 03:13:51,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332817995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:51,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:51,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:13:51,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52905771] [2024-06-28 03:13:51,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:51,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:13:51,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:51,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:13:51,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:13:51,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-28 03:13:51,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 78 transitions, 443 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 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) [2024-06-28 03:13:51,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:51,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-28 03:13:51,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:53,598 INFO L124 PetriNetUnfolderBase]: 13858/19133 cut-off events. [2024-06-28 03:13:53,598 INFO L125 PetriNetUnfolderBase]: For 98297/98297 co-relation queries the response was YES. [2024-06-28 03:13:53,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75210 conditions, 19133 events. 13858/19133 cut-off events. For 98297/98297 co-relation queries the response was YES. Maximal size of possible extension queue 657. Compared 105403 event pairs, 6789 based on Foata normal form. 6/19134 useless extension candidates. Maximal degree in co-relation 75186. Up to 18613 conditions per place. [2024-06-28 03:13:53,730 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 93 selfloop transitions, 23 changer transitions 0/123 dead transitions. [2024-06-28 03:13:53,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 123 transitions, 837 flow [2024-06-28 03:13:53,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:13:53,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:13:53,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-28 03:13:53,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46703296703296704 [2024-06-28 03:13:53,732 INFO L175 Difference]: Start difference. First operand has 74 places, 78 transitions, 443 flow. Second operand 7 states and 170 transitions. [2024-06-28 03:13:53,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 123 transitions, 837 flow [2024-06-28 03:13:53,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 123 transitions, 774 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 03:13:53,748 INFO L231 Difference]: Finished difference. Result has 78 places, 86 transitions, 514 flow [2024-06-28 03:13:53,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=514, PETRI_PLACES=78, PETRI_TRANSITIONS=86} [2024-06-28 03:13:53,749 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 23 predicate places. [2024-06-28 03:13:53,749 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 86 transitions, 514 flow [2024-06-28 03:13:53,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 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) [2024-06-28 03:13:53,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:53,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:53,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:13:53,749 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)] === [2024-06-28 03:13:53,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:53,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1238922399, now seen corresponding path program 2 times [2024-06-28 03:13:53,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:53,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404956632] [2024-06-28 03:13:53,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:53,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:54,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:54,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:54,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404956632] [2024-06-28 03:13:54,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404956632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:54,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:54,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:13:54,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607479831] [2024-06-28 03:13:54,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:54,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:13:54,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:54,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:13:54,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:13:54,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-28 03:13:54,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 86 transitions, 514 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 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) [2024-06-28 03:13:54,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:54,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-28 03:13:54,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:56,226 INFO L124 PetriNetUnfolderBase]: 14085/19424 cut-off events. [2024-06-28 03:13:56,227 INFO L125 PetriNetUnfolderBase]: For 126751/126751 co-relation queries the response was YES. [2024-06-28 03:13:56,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82914 conditions, 19424 events. 14085/19424 cut-off events. For 126751/126751 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 106811 event pairs, 6295 based on Foata normal form. 12/19431 useless extension candidates. Maximal degree in co-relation 82888. Up to 18739 conditions per place. [2024-06-28 03:13:56,351 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 95 selfloop transitions, 33 changer transitions 0/135 dead transitions. [2024-06-28 03:13:56,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 135 transitions, 1054 flow [2024-06-28 03:13:56,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:13:56,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:13:56,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-28 03:13:56,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4807692307692308 [2024-06-28 03:13:56,353 INFO L175 Difference]: Start difference. First operand has 78 places, 86 transitions, 514 flow. Second operand 7 states and 175 transitions. [2024-06-28 03:13:56,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 135 transitions, 1054 flow [2024-06-28 03:13:56,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 135 transitions, 989 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-28 03:13:56,377 INFO L231 Difference]: Finished difference. Result has 83 places, 96 transitions, 673 flow [2024-06-28 03:13:56,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=673, PETRI_PLACES=83, PETRI_TRANSITIONS=96} [2024-06-28 03:13:56,377 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 28 predicate places. [2024-06-28 03:13:56,377 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 96 transitions, 673 flow [2024-06-28 03:13:56,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 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) [2024-06-28 03:13:56,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:56,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:56,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:13:56,378 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)] === [2024-06-28 03:13:56,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:56,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1245351489, now seen corresponding path program 3 times [2024-06-28 03:13:56,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:56,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483340092] [2024-06-28 03:13:56,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:56,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:56,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:57,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:57,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:57,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483340092] [2024-06-28 03:13:57,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483340092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:57,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:57,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:13:57,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121094891] [2024-06-28 03:13:57,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:57,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:13:57,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:57,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:13:57,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:13:57,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-28 03:13:57,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 96 transitions, 673 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 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) [2024-06-28 03:13:57,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:57,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-28 03:13:57,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:59,074 INFO L124 PetriNetUnfolderBase]: 14102/19398 cut-off events. [2024-06-28 03:13:59,074 INFO L125 PetriNetUnfolderBase]: For 162423/162441 co-relation queries the response was YES. [2024-06-28 03:13:59,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89770 conditions, 19398 events. 14102/19398 cut-off events. For 162423/162441 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 106379 event pairs, 5995 based on Foata normal form. 28/19417 useless extension candidates. Maximal degree in co-relation 89742. Up to 18531 conditions per place. [2024-06-28 03:13:59,220 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 89 selfloop transitions, 51 changer transitions 0/147 dead transitions. [2024-06-28 03:13:59,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 147 transitions, 1329 flow [2024-06-28 03:13:59,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:13:59,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:13:59,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-28 03:13:59,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945054945054945 [2024-06-28 03:13:59,221 INFO L175 Difference]: Start difference. First operand has 83 places, 96 transitions, 673 flow. Second operand 7 states and 180 transitions. [2024-06-28 03:13:59,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 147 transitions, 1329 flow [2024-06-28 03:13:59,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 147 transitions, 1259 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-28 03:13:59,259 INFO L231 Difference]: Finished difference. Result has 88 places, 106 transitions, 880 flow [2024-06-28 03:13:59,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=603, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=880, PETRI_PLACES=88, PETRI_TRANSITIONS=106} [2024-06-28 03:13:59,260 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 33 predicate places. [2024-06-28 03:13:59,260 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 106 transitions, 880 flow [2024-06-28 03:13:59,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 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) [2024-06-28 03:13:59,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:59,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:59,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:13:59,261 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)] === [2024-06-28 03:13:59,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:59,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1245597753, now seen corresponding path program 1 times [2024-06-28 03:13:59,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:59,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351271913] [2024-06-28 03:13:59,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:59,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:59,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:00,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:00,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:00,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351271913] [2024-06-28 03:14:00,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351271913] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:00,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:00,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:14:00,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549977527] [2024-06-28 03:14:00,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:00,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:14:00,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:00,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:14:00,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:14:00,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-28 03:14:00,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 106 transitions, 880 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:00,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:00,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-28 03:14:00,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:02,050 INFO L124 PetriNetUnfolderBase]: 12368/17226 cut-off events. [2024-06-28 03:14:02,051 INFO L125 PetriNetUnfolderBase]: For 164042/164042 co-relation queries the response was YES. [2024-06-28 03:14:02,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83284 conditions, 17226 events. 12368/17226 cut-off events. For 164042/164042 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 94632 event pairs, 5484 based on Foata normal form. 6/17050 useless extension candidates. Maximal degree in co-relation 83253. Up to 16677 conditions per place. [2024-06-28 03:14:02,173 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 119 selfloop transitions, 22 changer transitions 0/147 dead transitions. [2024-06-28 03:14:02,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 147 transitions, 1316 flow [2024-06-28 03:14:02,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:14:02,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:14:02,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-28 03:14:02,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4423076923076923 [2024-06-28 03:14:02,188 INFO L175 Difference]: Start difference. First operand has 88 places, 106 transitions, 880 flow. Second operand 8 states and 184 transitions. [2024-06-28 03:14:02,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 147 transitions, 1316 flow [2024-06-28 03:14:02,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 147 transitions, 1167 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-06-28 03:14:02,256 INFO L231 Difference]: Finished difference. Result has 92 places, 109 transitions, 847 flow [2024-06-28 03:14:02,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=847, PETRI_PLACES=92, PETRI_TRANSITIONS=109} [2024-06-28 03:14:02,256 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 37 predicate places. [2024-06-28 03:14:02,257 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 109 transitions, 847 flow [2024-06-28 03:14:02,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:02,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:02,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:02,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:14:02,257 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:14:02,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:02,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1560425342, now seen corresponding path program 1 times [2024-06-28 03:14:02,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:02,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242918332] [2024-06-28 03:14:02,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:02,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:02,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:02,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:02,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:02,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242918332] [2024-06-28 03:14:02,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242918332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:02,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:02,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:14:02,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628900640] [2024-06-28 03:14:02,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:02,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:14:02,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:02,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:14:02,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:14:02,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-28 03:14:02,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 109 transitions, 847 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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) [2024-06-28 03:14:02,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:02,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-28 03:14:02,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:04,602 INFO L124 PetriNetUnfolderBase]: 12361/17533 cut-off events. [2024-06-28 03:14:04,603 INFO L125 PetriNetUnfolderBase]: For 166331/166331 co-relation queries the response was YES. [2024-06-28 03:14:04,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83163 conditions, 17533 events. 12361/17533 cut-off events. For 166331/166331 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 98686 event pairs, 5561 based on Foata normal form. 2/17331 useless extension candidates. Maximal degree in co-relation 83131. Up to 16734 conditions per place. [2024-06-28 03:14:04,713 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 109 selfloop transitions, 11 changer transitions 0/126 dead transitions. [2024-06-28 03:14:04,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 126 transitions, 1167 flow [2024-06-28 03:14:04,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:14:04,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:14:04,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-06-28 03:14:04,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43846153846153846 [2024-06-28 03:14:04,714 INFO L175 Difference]: Start difference. First operand has 92 places, 109 transitions, 847 flow. Second operand 5 states and 114 transitions. [2024-06-28 03:14:04,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 126 transitions, 1167 flow [2024-06-28 03:14:04,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 126 transitions, 1081 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 03:14:04,751 INFO L231 Difference]: Finished difference. Result has 91 places, 113 transitions, 846 flow [2024-06-28 03:14:04,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=846, PETRI_PLACES=91, PETRI_TRANSITIONS=113} [2024-06-28 03:14:04,752 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 36 predicate places. [2024-06-28 03:14:04,752 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 113 transitions, 846 flow [2024-06-28 03:14:04,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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) [2024-06-28 03:14:04,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:04,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:04,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:14:04,753 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)] === [2024-06-28 03:14:04,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:04,753 INFO L85 PathProgramCache]: Analyzing trace with hash -983095834, now seen corresponding path program 1 times [2024-06-28 03:14:04,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:04,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048357744] [2024-06-28 03:14:04,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:04,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:04,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:05,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:05,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:05,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048357744] [2024-06-28 03:14:05,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048357744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:05,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:05,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:14:05,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642597796] [2024-06-28 03:14:05,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:05,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:14:05,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:05,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:14:05,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:14:05,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-28 03:14:05,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 113 transitions, 846 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:05,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:05,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-28 03:14:05,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:07,780 INFO L124 PetriNetUnfolderBase]: 14071/19472 cut-off events. [2024-06-28 03:14:07,781 INFO L125 PetriNetUnfolderBase]: For 229344/229344 co-relation queries the response was YES. [2024-06-28 03:14:07,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100203 conditions, 19472 events. 14071/19472 cut-off events. For 229344/229344 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 107396 event pairs, 6062 based on Foata normal form. 3/19472 useless extension candidates. Maximal degree in co-relation 100170. Up to 18894 conditions per place. [2024-06-28 03:14:07,939 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 121 selfloop transitions, 26 changer transitions 0/154 dead transitions. [2024-06-28 03:14:07,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 154 transitions, 1311 flow [2024-06-28 03:14:07,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:14:07,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:14:07,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-28 03:14:07,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46703296703296704 [2024-06-28 03:14:07,940 INFO L175 Difference]: Start difference. First operand has 91 places, 113 transitions, 846 flow. Second operand 7 states and 170 transitions. [2024-06-28 03:14:07,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 154 transitions, 1311 flow [2024-06-28 03:14:08,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 154 transitions, 1256 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-28 03:14:08,017 INFO L231 Difference]: Finished difference. Result has 95 places, 117 transitions, 936 flow [2024-06-28 03:14:08,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=936, PETRI_PLACES=95, PETRI_TRANSITIONS=117} [2024-06-28 03:14:08,018 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 40 predicate places. [2024-06-28 03:14:08,018 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 117 transitions, 936 flow [2024-06-28 03:14:08,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:08,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:08,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:08,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:14:08,144 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)] === [2024-06-28 03:14:08,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:08,145 INFO L85 PathProgramCache]: Analyzing trace with hash -979280602, now seen corresponding path program 1 times [2024-06-28 03:14:08,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:08,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263250438] [2024-06-28 03:14:08,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:08,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:08,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:09,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:09,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:09,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263250438] [2024-06-28 03:14:09,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263250438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:09,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:09,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:14:09,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119526611] [2024-06-28 03:14:09,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:09,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:14:09,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:09,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:14:09,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:14:09,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 03:14:09,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 117 transitions, 936 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 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) [2024-06-28 03:14:09,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:09,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 03:14:09,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:11,028 INFO L124 PetriNetUnfolderBase]: 14356/19753 cut-off events. [2024-06-28 03:14:11,028 INFO L125 PetriNetUnfolderBase]: For 243990/243990 co-relation queries the response was YES. [2024-06-28 03:14:11,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100687 conditions, 19753 events. 14356/19753 cut-off events. For 243990/243990 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 106105 event pairs, 6111 based on Foata normal form. 9/19759 useless extension candidates. Maximal degree in co-relation 100653. Up to 19021 conditions per place. [2024-06-28 03:14:11,189 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 122 selfloop transitions, 49 changer transitions 0/176 dead transitions. [2024-06-28 03:14:11,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 176 transitions, 1546 flow [2024-06-28 03:14:11,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:14:11,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:14:11,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-28 03:14:11,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4519230769230769 [2024-06-28 03:14:11,191 INFO L175 Difference]: Start difference. First operand has 95 places, 117 transitions, 936 flow. Second operand 8 states and 188 transitions. [2024-06-28 03:14:11,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 176 transitions, 1546 flow [2024-06-28 03:14:11,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 176 transitions, 1394 flow, removed 52 selfloop flow, removed 5 redundant places. [2024-06-28 03:14:11,297 INFO L231 Difference]: Finished difference. Result has 99 places, 132 transitions, 1062 flow [2024-06-28 03:14:11,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=824, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1062, PETRI_PLACES=99, PETRI_TRANSITIONS=132} [2024-06-28 03:14:11,297 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 44 predicate places. [2024-06-28 03:14:11,297 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 132 transitions, 1062 flow [2024-06-28 03:14:11,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 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) [2024-06-28 03:14:11,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:11,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:11,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:14:11,298 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:14:11,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:11,298 INFO L85 PathProgramCache]: Analyzing trace with hash -41184366, now seen corresponding path program 2 times [2024-06-28 03:14:11,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:11,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149816536] [2024-06-28 03:14:11,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:11,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:11,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:12,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:12,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:12,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149816536] [2024-06-28 03:14:12,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149816536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:12,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:12,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:14:12,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882525004] [2024-06-28 03:14:12,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:12,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:14:12,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:12,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:14:12,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:14:12,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 03:14:12,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 132 transitions, 1062 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 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) [2024-06-28 03:14:12,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:12,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 03:14:12,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:14,682 INFO L124 PetriNetUnfolderBase]: 14378/19790 cut-off events. [2024-06-28 03:14:14,682 INFO L125 PetriNetUnfolderBase]: For 266584/266596 co-relation queries the response was YES. [2024-06-28 03:14:14,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103272 conditions, 19790 events. 14378/19790 cut-off events. For 266584/266596 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 106092 event pairs, 6127 based on Foata normal form. 11/19792 useless extension candidates. Maximal degree in co-relation 103236. Up to 18812 conditions per place. [2024-06-28 03:14:14,853 INFO L140 encePairwiseOnDemand]: 37/52 looper letters, 107 selfloop transitions, 82 changer transitions 0/194 dead transitions. [2024-06-28 03:14:14,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 194 transitions, 1801 flow [2024-06-28 03:14:14,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:14:14,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:14:14,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 206 transitions. [2024-06-28 03:14:14,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44017094017094016 [2024-06-28 03:14:14,854 INFO L175 Difference]: Start difference. First operand has 99 places, 132 transitions, 1062 flow. Second operand 9 states and 206 transitions. [2024-06-28 03:14:14,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 194 transitions, 1801 flow [2024-06-28 03:14:14,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 194 transitions, 1723 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-28 03:14:14,990 INFO L231 Difference]: Finished difference. Result has 106 places, 147 transitions, 1328 flow [2024-06-28 03:14:14,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1328, PETRI_PLACES=106, PETRI_TRANSITIONS=147} [2024-06-28 03:14:14,991 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 51 predicate places. [2024-06-28 03:14:14,991 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 147 transitions, 1328 flow [2024-06-28 03:14:14,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 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) [2024-06-28 03:14:14,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:14,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:14,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:14:14,992 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)] === [2024-06-28 03:14:14,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:14,992 INFO L85 PathProgramCache]: Analyzing trace with hash -41451276, now seen corresponding path program 3 times [2024-06-28 03:14:14,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:14,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809796744] [2024-06-28 03:14:14,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:14,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:15,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:16,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:16,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:16,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809796744] [2024-06-28 03:14:16,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809796744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:16,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:16,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:14:16,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263172478] [2024-06-28 03:14:16,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:16,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:14:16,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:16,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:14:16,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:14:16,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 03:14:16,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 147 transitions, 1328 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 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) [2024-06-28 03:14:16,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:16,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 03:14:16,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:18,832 INFO L124 PetriNetUnfolderBase]: 14422/19845 cut-off events. [2024-06-28 03:14:18,833 INFO L125 PetriNetUnfolderBase]: For 291960/291972 co-relation queries the response was YES. [2024-06-28 03:14:18,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106537 conditions, 19845 events. 14422/19845 cut-off events. For 291960/291972 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 106480 event pairs, 6136 based on Foata normal form. 11/19851 useless extension candidates. Maximal degree in co-relation 106497. Up to 19314 conditions per place. [2024-06-28 03:14:18,980 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 152 selfloop transitions, 40 changer transitions 0/197 dead transitions. [2024-06-28 03:14:18,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 197 transitions, 1952 flow [2024-06-28 03:14:18,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:14:18,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:14:18,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 180 transitions. [2024-06-28 03:14:18,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4326923076923077 [2024-06-28 03:14:18,982 INFO L175 Difference]: Start difference. First operand has 106 places, 147 transitions, 1328 flow. Second operand 8 states and 180 transitions. [2024-06-28 03:14:18,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 197 transitions, 1952 flow [2024-06-28 03:14:19,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 197 transitions, 1900 flow, removed 25 selfloop flow, removed 1 redundant places. [2024-06-28 03:14:19,078 INFO L231 Difference]: Finished difference. Result has 114 places, 159 transitions, 1529 flow [2024-06-28 03:14:19,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1276, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1529, PETRI_PLACES=114, PETRI_TRANSITIONS=159} [2024-06-28 03:14:19,079 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 59 predicate places. [2024-06-28 03:14:19,079 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 159 transitions, 1529 flow [2024-06-28 03:14:19,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 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) [2024-06-28 03:14:19,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:19,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:19,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:14:19,079 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)] === [2024-06-28 03:14:19,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:19,080 INFO L85 PathProgramCache]: Analyzing trace with hash -48802926, now seen corresponding path program 4 times [2024-06-28 03:14:19,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:19,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974797414] [2024-06-28 03:14:19,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:19,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:19,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:20,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:20,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:20,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974797414] [2024-06-28 03:14:20,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974797414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:20,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:20,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:14:20,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945384056] [2024-06-28 03:14:20,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:20,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:14:20,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:20,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:14:20,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:14:20,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 03:14:20,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 159 transitions, 1529 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 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) [2024-06-28 03:14:20,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:20,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 03:14:20,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:22,717 INFO L124 PetriNetUnfolderBase]: 14489/19939 cut-off events. [2024-06-28 03:14:22,718 INFO L125 PetriNetUnfolderBase]: For 313258/313270 co-relation queries the response was YES. [2024-06-28 03:14:22,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107291 conditions, 19939 events. 14489/19939 cut-off events. For 313258/313270 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 106659 event pairs, 6135 based on Foata normal form. 17/19947 useless extension candidates. Maximal degree in co-relation 107247. Up to 19044 conditions per place. [2024-06-28 03:14:22,872 INFO L140 encePairwiseOnDemand]: 37/52 looper letters, 128 selfloop transitions, 77 changer transitions 0/210 dead transitions. [2024-06-28 03:14:22,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 210 transitions, 2172 flow [2024-06-28 03:14:22,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:14:22,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:14:22,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 205 transitions. [2024-06-28 03:14:22,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43803418803418803 [2024-06-28 03:14:22,874 INFO L175 Difference]: Start difference. First operand has 114 places, 159 transitions, 1529 flow. Second operand 9 states and 205 transitions. [2024-06-28 03:14:22,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 210 transitions, 2172 flow [2024-06-28 03:14:23,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 210 transitions, 2082 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-28 03:14:23,043 INFO L231 Difference]: Finished difference. Result has 120 places, 167 transitions, 1721 flow [2024-06-28 03:14:23,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1441, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1721, PETRI_PLACES=120, PETRI_TRANSITIONS=167} [2024-06-28 03:14:23,044 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 65 predicate places. [2024-06-28 03:14:23,044 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 167 transitions, 1721 flow [2024-06-28 03:14:23,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 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) [2024-06-28 03:14:23,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:23,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:23,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:14:23,044 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:14:23,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:23,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1128543148, now seen corresponding path program 1 times [2024-06-28 03:14:23,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:23,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405273631] [2024-06-28 03:14:23,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:23,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:23,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:23,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:23,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:23,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405273631] [2024-06-28 03:14:23,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405273631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:23,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:23,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:14:23,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307795682] [2024-06-28 03:14:23,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:23,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:14:23,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:23,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:14:23,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:14:23,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 03:14:23,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 167 transitions, 1721 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:23,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:23,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 03:14:23,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:26,489 INFO L124 PetriNetUnfolderBase]: 14495/20002 cut-off events. [2024-06-28 03:14:26,489 INFO L125 PetriNetUnfolderBase]: For 329414/329414 co-relation queries the response was YES. [2024-06-28 03:14:26,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109134 conditions, 20002 events. 14495/20002 cut-off events. For 329414/329414 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 107625 event pairs, 6085 based on Foata normal form. 6/20005 useless extension candidates. Maximal degree in co-relation 109089. Up to 19496 conditions per place. [2024-06-28 03:14:26,625 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 174 selfloop transitions, 23 changer transitions 0/202 dead transitions. [2024-06-28 03:14:26,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 202 transitions, 2375 flow [2024-06-28 03:14:26,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:14:26,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:14:26,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-28 03:14:26,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358974358974359 [2024-06-28 03:14:26,627 INFO L175 Difference]: Start difference. First operand has 120 places, 167 transitions, 1721 flow. Second operand 6 states and 136 transitions. [2024-06-28 03:14:26,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 202 transitions, 2375 flow [2024-06-28 03:14:26,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 202 transitions, 2170 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-28 03:14:26,809 INFO L231 Difference]: Finished difference. Result has 121 places, 181 transitions, 1743 flow [2024-06-28 03:14:26,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1516, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1743, PETRI_PLACES=121, PETRI_TRANSITIONS=181} [2024-06-28 03:14:26,809 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 66 predicate places. [2024-06-28 03:14:26,810 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 181 transitions, 1743 flow [2024-06-28 03:14:26,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:26,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:26,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:26,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:14:26,810 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)] === [2024-06-28 03:14:26,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:26,811 INFO L85 PathProgramCache]: Analyzing trace with hash -870448300, now seen corresponding path program 1 times [2024-06-28 03:14:26,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:26,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289320762] [2024-06-28 03:14:26,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:26,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:26,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:27,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:27,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:27,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289320762] [2024-06-28 03:14:27,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289320762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:27,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:27,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:14:27,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220693525] [2024-06-28 03:14:27,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:27,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:14:27,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:27,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:14:27,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:14:27,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-28 03:14:27,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 181 transitions, 1743 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:27,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:27,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-28 03:14:27,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:30,573 INFO L124 PetriNetUnfolderBase]: 14427/20160 cut-off events. [2024-06-28 03:14:30,573 INFO L125 PetriNetUnfolderBase]: For 397643/397805 co-relation queries the response was YES. [2024-06-28 03:14:30,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118137 conditions, 20160 events. 14427/20160 cut-off events. For 397643/397805 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 112822 event pairs, 4969 based on Foata normal form. 6/20103 useless extension candidates. Maximal degree in co-relation 118091. Up to 19273 conditions per place. [2024-06-28 03:14:30,749 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 189 selfloop transitions, 25 changer transitions 0/228 dead transitions. [2024-06-28 03:14:30,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 228 transitions, 2360 flow [2024-06-28 03:14:30,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:14:30,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:14:30,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-28 03:14:30,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45913461538461536 [2024-06-28 03:14:30,750 INFO L175 Difference]: Start difference. First operand has 121 places, 181 transitions, 1743 flow. Second operand 8 states and 191 transitions. [2024-06-28 03:14:30,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 228 transitions, 2360 flow [2024-06-28 03:14:30,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 228 transitions, 2314 flow, removed 22 selfloop flow, removed 1 redundant places. [2024-06-28 03:14:30,962 INFO L231 Difference]: Finished difference. Result has 128 places, 184 transitions, 1833 flow [2024-06-28 03:14:30,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1697, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1833, PETRI_PLACES=128, PETRI_TRANSITIONS=184} [2024-06-28 03:14:30,962 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 73 predicate places. [2024-06-28 03:14:30,962 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 184 transitions, 1833 flow [2024-06-28 03:14:30,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:30,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:30,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:30,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:14:30,963 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)] === [2024-06-28 03:14:30,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:30,963 INFO L85 PathProgramCache]: Analyzing trace with hash -408517934, now seen corresponding path program 2 times [2024-06-28 03:14:30,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:30,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375908443] [2024-06-28 03:14:30,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:30,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:30,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:32,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:32,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:32,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375908443] [2024-06-28 03:14:32,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375908443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:32,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:32,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:14:32,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43876845] [2024-06-28 03:14:32,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:32,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:14:32,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:32,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:14:32,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:14:32,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-28 03:14:32,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 184 transitions, 1833 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:32,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:32,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-28 03:14:32,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:34,995 INFO L124 PetriNetUnfolderBase]: 14497/20260 cut-off events. [2024-06-28 03:14:34,995 INFO L125 PetriNetUnfolderBase]: For 448194/448356 co-relation queries the response was YES. [2024-06-28 03:14:35,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122633 conditions, 20260 events. 14497/20260 cut-off events. For 448194/448356 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 113584 event pairs, 5637 based on Foata normal form. 12/20194 useless extension candidates. Maximal degree in co-relation 122584. Up to 19352 conditions per place. [2024-06-28 03:14:35,186 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 181 selfloop transitions, 36 changer transitions 0/231 dead transitions. [2024-06-28 03:14:35,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 231 transitions, 2464 flow [2024-06-28 03:14:35,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:14:35,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:14:35,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-28 03:14:35,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-28 03:14:35,188 INFO L175 Difference]: Start difference. First operand has 128 places, 184 transitions, 1833 flow. Second operand 8 states and 192 transitions. [2024-06-28 03:14:35,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 231 transitions, 2464 flow [2024-06-28 03:14:35,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 231 transitions, 2354 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-28 03:14:35,490 INFO L231 Difference]: Finished difference. Result has 130 places, 187 transitions, 1890 flow [2024-06-28 03:14:35,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1723, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1890, PETRI_PLACES=130, PETRI_TRANSITIONS=187} [2024-06-28 03:14:35,491 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 75 predicate places. [2024-06-28 03:14:35,491 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 187 transitions, 1890 flow [2024-06-28 03:14:35,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:35,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:35,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:35,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:14:35,491 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)] === [2024-06-28 03:14:35,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:35,492 INFO L85 PathProgramCache]: Analyzing trace with hash -292926746, now seen corresponding path program 1 times [2024-06-28 03:14:35,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:35,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293028497] [2024-06-28 03:14:35,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:35,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:35,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:36,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:36,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:36,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293028497] [2024-06-28 03:14:36,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293028497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:36,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:36,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:14:36,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699859142] [2024-06-28 03:14:36,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:36,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:14:36,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:36,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:14:36,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:14:36,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 03:14:36,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 187 transitions, 1890 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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) [2024-06-28 03:14:36,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:36,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 03:14:36,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:39,487 INFO L124 PetriNetUnfolderBase]: 15395/21223 cut-off events. [2024-06-28 03:14:39,487 INFO L125 PetriNetUnfolderBase]: For 497241/497403 co-relation queries the response was YES. [2024-06-28 03:14:39,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128472 conditions, 21223 events. 15395/21223 cut-off events. For 497241/497403 co-relation queries the response was YES. Maximal size of possible extension queue 676. Compared 114325 event pairs, 5923 based on Foata normal form. 6/21135 useless extension candidates. Maximal degree in co-relation 128422. Up to 20564 conditions per place. [2024-06-28 03:14:39,651 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 214 selfloop transitions, 32 changer transitions 0/254 dead transitions. [2024-06-28 03:14:39,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 254 transitions, 2765 flow [2024-06-28 03:14:39,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:14:39,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:14:39,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 212 transitions. [2024-06-28 03:14:39,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4076923076923077 [2024-06-28 03:14:39,653 INFO L175 Difference]: Start difference. First operand has 130 places, 187 transitions, 1890 flow. Second operand 10 states and 212 transitions. [2024-06-28 03:14:39,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 254 transitions, 2765 flow [2024-06-28 03:14:39,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 254 transitions, 2620 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-28 03:14:39,946 INFO L231 Difference]: Finished difference. Result has 138 places, 208 transitions, 2133 flow [2024-06-28 03:14:39,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1755, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2133, PETRI_PLACES=138, PETRI_TRANSITIONS=208} [2024-06-28 03:14:39,947 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 83 predicate places. [2024-06-28 03:14:39,947 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 208 transitions, 2133 flow [2024-06-28 03:14:39,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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) [2024-06-28 03:14:39,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:39,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:39,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:14:39,948 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)] === [2024-06-28 03:14:39,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:39,948 INFO L85 PathProgramCache]: Analyzing trace with hash -293111444, now seen corresponding path program 3 times [2024-06-28 03:14:39,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:39,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719026954] [2024-06-28 03:14:39,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:39,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:39,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat