./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix014_tso.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/mix014_tso.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 76401ed0 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/mix014_tso.oepc.i ./goblint.2024-05-21_14-57-05.files/protection/mix014_tso.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-76401ed-m [2024-06-20 15:56:03,459 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-20 15:56:03,518 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-20 15:56:03,527 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-20 15:56:03,528 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-20 15:56:03,547 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-20 15:56:03,550 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-20 15:56:03,551 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-20 15:56:03,551 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-20 15:56:03,555 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-20 15:56:03,555 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-20 15:56:03,555 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-20 15:56:03,556 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-20 15:56:03,557 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-20 15:56:03,557 INFO L153 SettingsManager]: * Use SBE=true [2024-06-20 15:56:03,558 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-20 15:56:03,558 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-20 15:56:03,558 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-20 15:56:03,558 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-20 15:56:03,559 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-20 15:56:03,560 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-20 15:56:03,560 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-20 15:56:03,560 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-20 15:56:03,560 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-20 15:56:03,561 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-20 15:56:03,561 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-20 15:56:03,561 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-20 15:56:03,561 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-20 15:56:03,562 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-20 15:56:03,562 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-20 15:56:03,563 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-20 15:56:03,563 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-20 15:56:03,563 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 15:56:03,563 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-20 15:56:03,563 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-20 15:56:03,563 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-20 15:56:03,564 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-20 15:56:03,564 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-20 15:56:03,564 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-20 15:56:03,564 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-20 15:56:03,564 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-20 15:56:03,565 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-20 15:56:03,565 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-20 15:56:03,565 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-20 15:56:03,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-20 15:56:03,772 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-20 15:56:03,775 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-20 15:56:03,776 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-20 15:56:03,776 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-20 15:56:03,777 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix014_tso.oepc.yml/witness.yml [2024-06-20 15:56:03,978 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-20 15:56:03,978 INFO L274 PluginConnector]: CDTParser initialized [2024-06-20 15:56:03,979 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix014_tso.oepc.i [2024-06-20 15:56:05,024 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-20 15:56:05,296 INFO L384 CDTParser]: Found 1 translation units. [2024-06-20 15:56:05,298 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix014_tso.oepc.i [2024-06-20 15:56:05,312 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05ff45706/1ac2dd9cd66249c8828b04f794d37876/FLAG68fa0e6e7 [2024-06-20 15:56:05,427 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05ff45706/1ac2dd9cd66249c8828b04f794d37876 [2024-06-20 15:56:05,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-20 15:56:05,429 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-20 15:56:05,431 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-20 15:56:05,431 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-20 15:56:05,435 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-20 15:56:05,435 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 03:56:03" (1/2) ... [2024-06-20 15:56:05,436 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2931e40d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:56:05, skipping insertion in model container [2024-06-20 15:56:05,437 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 03:56:03" (1/2) ... [2024-06-20 15:56:05,438 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@10d3ad27 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:56:05, skipping insertion in model container [2024-06-20 15:56:05,438 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 03:56:05" (2/2) ... [2024-06-20 15:56:05,439 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2931e40d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:56:05, skipping insertion in model container [2024-06-20 15:56:05,439 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 03:56:05" (2/2) ... [2024-06-20 15:56:05,439 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-20 15:56:05,610 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-20 15:56:05,611 INFO L97 edCorrectnessWitness]: Location invariant before [L930-L930] (((((((((((((((((((((((((((((((((((((! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 2) && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) [2024-06-20 15:56:05,611 INFO L97 edCorrectnessWitness]: Location invariant before [L927-L927] (((((((((((((((((((((((((((((((((((((! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 2) && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) [2024-06-20 15:56:05,611 INFO L97 edCorrectnessWitness]: Location invariant before [L925-L925] (((((((((((((((((((((((((((((((((((((! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 2) && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) [2024-06-20 15:56:05,611 INFO L97 edCorrectnessWitness]: Location invariant before [L929-L929] (((((((((((((((((((((((((((((((((((((! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 2) && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) [2024-06-20 15:56:05,612 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-20 15:56:05,612 INFO L106 edCorrectnessWitness]: ghost_update [L923-L923] multithreaded = 1; [2024-06-20 15:56:05,650 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-20 15:56:05,975 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 15:56:05,982 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-20 15:56:06,126 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 15:56:06,156 INFO L206 MainTranslator]: Completed translation [2024-06-20 15:56:06,157 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:56:06 WrapperNode [2024-06-20 15:56:06,157 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-20 15:56:06,158 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-20 15:56:06,158 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-20 15:56:06,158 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-20 15:56:06,163 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:56:06" (1/1) ... [2024-06-20 15:56:06,183 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:56:06" (1/1) ... [2024-06-20 15:56:06,219 INFO L138 Inliner]: procedures = 176, calls = 57, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 265 [2024-06-20 15:56:06,220 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-20 15:56:06,221 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-20 15:56:06,221 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-20 15:56:06,221 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-20 15:56:06,229 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:56:06" (1/1) ... [2024-06-20 15:56:06,230 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:56:06" (1/1) ... [2024-06-20 15:56:06,234 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:56:06" (1/1) ... [2024-06-20 15:56:06,250 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]. [2024-06-20 15:56:06,250 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:56:06" (1/1) ... [2024-06-20 15:56:06,250 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:56:06" (1/1) ... [2024-06-20 15:56:06,262 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:56:06" (1/1) ... [2024-06-20 15:56:06,264 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:56:06" (1/1) ... [2024-06-20 15:56:06,266 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:56:06" (1/1) ... [2024-06-20 15:56:06,268 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:56:06" (1/1) ... [2024-06-20 15:56:06,273 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-20 15:56:06,273 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-20 15:56:06,273 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-20 15:56:06,274 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-20 15:56:06,274 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:56:06" (1/1) ... [2024-06-20 15:56:06,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 15:56:06,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-20 15:56:06,296 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) [2024-06-20 15:56:06,345 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 [2024-06-20 15:56:06,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-20 15:56:06,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-20 15:56:06,361 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-20 15:56:06,361 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-20 15:56:06,361 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-20 15:56:06,361 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-20 15:56:06,361 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-20 15:56:06,362 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-20 15:56:06,362 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-20 15:56:06,362 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-20 15:56:06,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-20 15:56:06,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-20 15:56:06,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-20 15:56:06,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-20 15:56:06,365 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-20 15:56:06,512 INFO L244 CfgBuilder]: Building ICFG [2024-06-20 15:56:06,514 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-20 15:56:07,028 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-20 15:56:07,029 INFO L293 CfgBuilder]: Performing block encoding [2024-06-20 15:56:07,281 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-20 15:56:07,281 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-20 15:56:07,281 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 03:56:07 BoogieIcfgContainer [2024-06-20 15:56:07,281 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-20 15:56:07,283 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-20 15:56:07,283 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-20 15:56:07,286 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-20 15:56:07,286 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 03:56:03" (1/4) ... [2024-06-20 15:56:07,286 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38412994 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 03:56:07, skipping insertion in model container [2024-06-20 15:56:07,286 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.06 03:56:05" (2/4) ... [2024-06-20 15:56:07,286 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38412994 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.06 03:56:07, skipping insertion in model container [2024-06-20 15:56:07,286 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:56:06" (3/4) ... [2024-06-20 15:56:07,287 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38412994 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.06 03:56:07, skipping insertion in model container [2024-06-20 15:56:07,287 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 03:56:07" (4/4) ... [2024-06-20 15:56:07,287 INFO L112 eAbstractionObserver]: Analyzing ICFG mix014_tso.oepc.i [2024-06-20 15:56:07,317 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-20 15:56:07,318 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-20 15:56:07,318 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-20 15:56:07,386 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-20 15:56:07,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 53 transitions, 122 flow [2024-06-20 15:56:07,451 INFO L124 PetriNetUnfolderBase]: 0/49 cut-off events. [2024-06-20 15:56:07,451 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 15:56:07,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 49 events. 0/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 93 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-20 15:56:07,454 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 53 transitions, 122 flow [2024-06-20 15:56:07,457 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 43 transitions, 98 flow [2024-06-20 15:56:07,484 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-20 15:56:07,490 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;@64448915, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-20 15:56:07,490 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-20 15:56:07,495 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-20 15:56:07,495 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-20 15:56:07,496 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 15:56:07,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:56:07,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-20 15:56:07,497 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)] === [2024-06-20 15:56:07,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:56:07,501 INFO L85 PathProgramCache]: Analyzing trace with hash 594913301, now seen corresponding path program 1 times [2024-06-20 15:56:07,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:56:07,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062815453] [2024-06-20 15:56:07,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:56:07,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:56:07,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:56:09,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:56:09,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:56:09,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062815453] [2024-06-20 15:56:09,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062815453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:56:09,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:56:09,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-20 15:56:09,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668585845] [2024-06-20 15:56:09,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:56:09,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-20 15:56:09,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:56:09,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-20 15:56:09,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-20 15:56:09,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-20 15:56:09,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 98 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) [2024-06-20 15:56:09,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:56:09,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-20 15:56:09,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:56:12,478 INFO L124 PetriNetUnfolderBase]: 11702/16708 cut-off events. [2024-06-20 15:56:12,478 INFO L125 PetriNetUnfolderBase]: For 256/256 co-relation queries the response was YES. [2024-06-20 15:56:12,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33113 conditions, 16708 events. 11702/16708 cut-off events. For 256/256 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 96509 event pairs, 9106 based on Foata normal form. 1/16159 useless extension candidates. Maximal degree in co-relation 33100. Up to 15870 conditions per place. [2024-06-20 15:56:12,555 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 44 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-06-20 15:56:12,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 233 flow [2024-06-20 15:56:12,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-20 15:56:12,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-20 15:56:12,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-06-20 15:56:12,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5974842767295597 [2024-06-20 15:56:12,565 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 98 flow. Second operand 3 states and 95 transitions. [2024-06-20 15:56:12,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 233 flow [2024-06-20 15:56:12,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 57 transitions, 226 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-20 15:56:12,570 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 133 flow [2024-06-20 15:56:12,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-06-20 15:56:12,573 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2024-06-20 15:56:12,573 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 133 flow [2024-06-20 15:56:12,574 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) [2024-06-20 15:56:12,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:56:12,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:56:12,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-20 15:56:12,574 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)] === [2024-06-20 15:56:12,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:56:12,575 INFO L85 PathProgramCache]: Analyzing trace with hash 481953016, now seen corresponding path program 1 times [2024-06-20 15:56:12,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:56:12,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678946636] [2024-06-20 15:56:12,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:56:12,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:56:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:56:14,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:56:14,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:56:14,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678946636] [2024-06-20 15:56:14,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678946636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:56:14,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:56:14,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-20 15:56:14,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71951980] [2024-06-20 15:56:14,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:56:14,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-20 15:56:14,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:56:14,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-20 15:56:14,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-20 15:56:14,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-20 15:56:14,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 133 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) [2024-06-20 15:56:14,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:56:14,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-20 15:56:14,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:56:16,904 INFO L124 PetriNetUnfolderBase]: 13681/18977 cut-off events. [2024-06-20 15:56:16,904 INFO L125 PetriNetUnfolderBase]: For 3323/3323 co-relation queries the response was YES. [2024-06-20 15:56:16,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42546 conditions, 18977 events. 13681/18977 cut-off events. For 3323/3323 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 105559 event pairs, 9847 based on Foata normal form. 4/18896 useless extension candidates. Maximal degree in co-relation 42534. Up to 18454 conditions per place. [2024-06-20 15:56:16,976 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 55 selfloop transitions, 9 changer transitions 0/71 dead transitions. [2024-06-20 15:56:16,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 71 transitions, 327 flow [2024-06-20 15:56:16,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-20 15:56:16,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-20 15:56:16,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-06-20 15:56:16,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5660377358490566 [2024-06-20 15:56:16,980 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 133 flow. Second operand 4 states and 120 transitions. [2024-06-20 15:56:16,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 71 transitions, 327 flow [2024-06-20 15:56:16,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 71 transitions, 322 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-20 15:56:16,984 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 181 flow [2024-06-20 15:56:16,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-06-20 15:56:16,985 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2024-06-20 15:56:16,985 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 181 flow [2024-06-20 15:56:16,987 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) [2024-06-20 15:56:16,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:56:16,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:56:16,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-20 15:56:16,989 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)] === [2024-06-20 15:56:16,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:56:16,993 INFO L85 PathProgramCache]: Analyzing trace with hash 2055643426, now seen corresponding path program 1 times [2024-06-20 15:56:16,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:56:16,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058032123] [2024-06-20 15:56:16,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:56:16,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:56:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:56:18,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:56:18,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:56:18,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058032123] [2024-06-20 15:56:18,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058032123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:56:18,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:56:18,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-20 15:56:18,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702869351] [2024-06-20 15:56:18,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:56:18,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-20 15:56:18,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:56:18,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-20 15:56:18,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-20 15:56:18,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-20 15:56:18,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 181 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) [2024-06-20 15:56:18,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:56:18,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-20 15:56:18,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:56:21,515 INFO L124 PetriNetUnfolderBase]: 13661/18945 cut-off events. [2024-06-20 15:56:21,515 INFO L125 PetriNetUnfolderBase]: For 9431/9431 co-relation queries the response was YES. [2024-06-20 15:56:21,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46993 conditions, 18945 events. 13661/18945 cut-off events. For 9431/9431 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 105295 event pairs, 8023 based on Foata normal form. 8/18872 useless extension candidates. Maximal degree in co-relation 46979. Up to 18384 conditions per place. [2024-06-20 15:56:21,596 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 66 selfloop transitions, 13 changer transitions 0/86 dead transitions. [2024-06-20 15:56:21,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 86 transitions, 439 flow [2024-06-20 15:56:21,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 15:56:21,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 15:56:21,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 148 transitions. [2024-06-20 15:56:21,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5584905660377358 [2024-06-20 15:56:21,598 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 181 flow. Second operand 5 states and 148 transitions. [2024-06-20 15:56:21,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 86 transitions, 439 flow [2024-06-20 15:56:21,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 86 transitions, 420 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-20 15:56:21,601 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 229 flow [2024-06-20 15:56:21,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=229, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2024-06-20 15:56:21,602 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 5 predicate places. [2024-06-20 15:56:21,602 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 229 flow [2024-06-20 15:56:21,603 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) [2024-06-20 15:56:21,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:56:21,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:56:21,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-20 15:56:21,603 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)] === [2024-06-20 15:56:21,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:56:21,603 INFO L85 PathProgramCache]: Analyzing trace with hash -207996699, now seen corresponding path program 1 times [2024-06-20 15:56:21,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:56:21,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752692741] [2024-06-20 15:56:21,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:56:21,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:56:21,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:56:24,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:56:24,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:56:24,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752692741] [2024-06-20 15:56:24,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752692741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:56:24,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:56:24,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 15:56:24,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107083472] [2024-06-20 15:56:24,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:56:24,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 15:56:24,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:56:24,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 15:56:24,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-20 15:56:24,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-20 15:56:24,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 229 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) [2024-06-20 15:56:24,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:56:24,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-20 15:56:24,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:56:27,644 INFO L124 PetriNetUnfolderBase]: 13645/18917 cut-off events. [2024-06-20 15:56:27,644 INFO L125 PetriNetUnfolderBase]: For 18206/18206 co-relation queries the response was YES. [2024-06-20 15:56:27,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51403 conditions, 18917 events. 13645/18917 cut-off events. For 18206/18206 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 105189 event pairs, 6990 based on Foata normal form. 8/18848 useless extension candidates. Maximal degree in co-relation 51388. Up to 18318 conditions per place. [2024-06-20 15:56:27,728 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 73 selfloop transitions, 16 changer transitions 0/96 dead transitions. [2024-06-20 15:56:27,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 96 transitions, 523 flow [2024-06-20 15:56:27,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 15:56:27,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 15:56:27,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 171 transitions. [2024-06-20 15:56:27,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5377358490566038 [2024-06-20 15:56:27,730 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 229 flow. Second operand 6 states and 171 transitions. [2024-06-20 15:56:27,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 96 transitions, 523 flow [2024-06-20 15:56:27,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 96 transitions, 490 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-20 15:56:27,735 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 260 flow [2024-06-20 15:56:27,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=260, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2024-06-20 15:56:27,736 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 7 predicate places. [2024-06-20 15:56:27,736 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 260 flow [2024-06-20 15:56:27,737 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) [2024-06-20 15:56:27,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:56:27,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:56:27,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-20 15:56:27,737 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)] === [2024-06-20 15:56:27,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:56:27,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1242635156, now seen corresponding path program 1 times [2024-06-20 15:56:27,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:56:27,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206166173] [2024-06-20 15:56:27,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:56:27,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:56:27,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:56:29,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:56:29,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:56:29,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206166173] [2024-06-20 15:56:29,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206166173] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:56:29,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:56:29,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-20 15:56:29,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568518102] [2024-06-20 15:56:29,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:56:29,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-20 15:56:29,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:56:29,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-20 15:56:29,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-20 15:56:29,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-20 15:56:29,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 260 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) [2024-06-20 15:56:29,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:56:29,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-20 15:56:29,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:56:31,861 INFO L124 PetriNetUnfolderBase]: 11647/16644 cut-off events. [2024-06-20 15:56:31,861 INFO L125 PetriNetUnfolderBase]: For 24372/24372 co-relation queries the response was YES. [2024-06-20 15:56:31,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48072 conditions, 16644 events. 11647/16644 cut-off events. For 24372/24372 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 96198 event pairs, 7090 based on Foata normal form. 3/16360 useless extension candidates. Maximal degree in co-relation 48055. Up to 15777 conditions per place. [2024-06-20 15:56:31,958 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 61 selfloop transitions, 10 changer transitions 0/78 dead transitions. [2024-06-20 15:56:31,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 78 transitions, 472 flow [2024-06-20 15:56:31,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 15:56:31,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 15:56:31,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-06-20 15:56:31,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4641509433962264 [2024-06-20 15:56:31,960 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 260 flow. Second operand 5 states and 123 transitions. [2024-06-20 15:56:31,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 78 transitions, 472 flow [2024-06-20 15:56:31,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 78 transitions, 426 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-20 15:56:31,966 INFO L231 Difference]: Finished difference. Result has 64 places, 61 transitions, 279 flow [2024-06-20 15:56:31,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=279, PETRI_PLACES=64, PETRI_TRANSITIONS=61} [2024-06-20 15:56:31,970 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 8 predicate places. [2024-06-20 15:56:31,970 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 279 flow [2024-06-20 15:56:31,971 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) [2024-06-20 15:56:31,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:56:31,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:56:31,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-20 15:56:31,971 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)] === [2024-06-20 15:56:31,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:56:31,972 INFO L85 PathProgramCache]: Analyzing trace with hash 173235772, now seen corresponding path program 1 times [2024-06-20 15:56:31,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:56:31,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799979692] [2024-06-20 15:56:31,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:56:31,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:56:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:56:34,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:56:34,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:56:34,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799979692] [2024-06-20 15:56:34,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799979692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:56:34,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:56:34,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 15:56:34,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593723503] [2024-06-20 15:56:34,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:56:34,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 15:56:34,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:56:34,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 15:56:34,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-20 15:56:34,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-20 15:56:34,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 61 transitions, 279 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 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) [2024-06-20 15:56:34,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:56:34,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-20 15:56:34,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:56:36,898 INFO L124 PetriNetUnfolderBase]: 11620/16610 cut-off events. [2024-06-20 15:56:36,898 INFO L125 PetriNetUnfolderBase]: For 35320/35320 co-relation queries the response was YES. [2024-06-20 15:56:36,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51659 conditions, 16610 events. 11620/16610 cut-off events. For 35320/35320 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 96008 event pairs, 6772 based on Foata normal form. 9/16332 useless extension candidates. Maximal degree in co-relation 51640. Up to 15696 conditions per place. [2024-06-20 15:56:37,044 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 70 selfloop transitions, 14 changer transitions 0/91 dead transitions. [2024-06-20 15:56:37,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 91 transitions, 545 flow [2024-06-20 15:56:37,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 15:56:37,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 15:56:37,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-20 15:56:37,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46540880503144655 [2024-06-20 15:56:37,046 INFO L175 Difference]: Start difference. First operand has 64 places, 61 transitions, 279 flow. Second operand 6 states and 148 transitions. [2024-06-20 15:56:37,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 91 transitions, 545 flow [2024-06-20 15:56:37,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 91 transitions, 512 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-20 15:56:37,056 INFO L231 Difference]: Finished difference. Result has 67 places, 65 transitions, 325 flow [2024-06-20 15:56:37,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=325, PETRI_PLACES=67, PETRI_TRANSITIONS=65} [2024-06-20 15:56:37,057 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 11 predicate places. [2024-06-20 15:56:37,057 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 65 transitions, 325 flow [2024-06-20 15:56:37,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 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) [2024-06-20 15:56:37,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:56:37,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:56:37,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-20 15:56:37,058 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-20 15:56:37,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:56:37,059 INFO L85 PathProgramCache]: Analyzing trace with hash -81323179, now seen corresponding path program 1 times [2024-06-20 15:56:37,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:56:37,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429012674] [2024-06-20 15:56:37,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:56:37,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:56:37,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:56:38,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:56:38,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:56:38,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429012674] [2024-06-20 15:56:38,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429012674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:56:38,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:56:38,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 15:56:38,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437812650] [2024-06-20 15:56:38,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:56:38,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 15:56:38,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:56:38,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 15:56:38,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-20 15:56:39,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-20 15:56:39,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 65 transitions, 325 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) [2024-06-20 15:56:39,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:56:39,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-20 15:56:39,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:56:41,807 INFO L124 PetriNetUnfolderBase]: 13631/18994 cut-off events. [2024-06-20 15:56:41,808 INFO L125 PetriNetUnfolderBase]: For 56350/56350 co-relation queries the response was YES. [2024-06-20 15:56:41,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63735 conditions, 18994 events. 13631/18994 cut-off events. For 56350/56350 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 106137 event pairs, 8144 based on Foata normal form. 3/18916 useless extension candidates. Maximal degree in co-relation 63715. Up to 18369 conditions per place. [2024-06-20 15:56:41,942 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 76 selfloop transitions, 14 changer transitions 0/96 dead transitions. [2024-06-20 15:56:41,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 96 transitions, 611 flow [2024-06-20 15:56:41,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 15:56:41,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 15:56:41,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-20 15:56:41,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4528301886792453 [2024-06-20 15:56:41,944 INFO L175 Difference]: Start difference. First operand has 67 places, 65 transitions, 325 flow. Second operand 6 states and 144 transitions. [2024-06-20 15:56:41,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 96 transitions, 611 flow [2024-06-20 15:56:41,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 96 transitions, 564 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-20 15:56:41,954 INFO L231 Difference]: Finished difference. Result has 69 places, 69 transitions, 361 flow [2024-06-20 15:56:41,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=361, PETRI_PLACES=69, PETRI_TRANSITIONS=69} [2024-06-20 15:56:41,955 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 13 predicate places. [2024-06-20 15:56:41,955 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 69 transitions, 361 flow [2024-06-20 15:56:41,956 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) [2024-06-20 15:56:41,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:56:41,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:56:41,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-20 15:56:41,956 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)] === [2024-06-20 15:56:41,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:56:41,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1075335825, now seen corresponding path program 2 times [2024-06-20 15:56:41,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:56:41,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260344940] [2024-06-20 15:56:41,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:56:41,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:56:41,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:56:43,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:56:43,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:56:43,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260344940] [2024-06-20 15:56:43,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260344940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:56:43,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:56:43,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 15:56:43,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392082570] [2024-06-20 15:56:43,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:56:43,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 15:56:43,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:56:43,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 15:56:43,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-20 15:56:43,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-20 15:56:43,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 69 transitions, 361 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) [2024-06-20 15:56:43,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:56:43,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-20 15:56:43,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:56:46,700 INFO L124 PetriNetUnfolderBase]: 13622/18989 cut-off events. [2024-06-20 15:56:46,700 INFO L125 PetriNetUnfolderBase]: For 73629/73643 co-relation queries the response was YES. [2024-06-20 15:56:46,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67912 conditions, 18989 events. 13622/18989 cut-off events. For 73629/73643 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 105932 event pairs, 8148 based on Foata normal form. 15/18918 useless extension candidates. Maximal degree in co-relation 67891. Up to 18327 conditions per place. [2024-06-20 15:56:46,808 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 70 selfloop transitions, 21 changer transitions 0/97 dead transitions. [2024-06-20 15:56:46,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 97 transitions, 649 flow [2024-06-20 15:56:46,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 15:56:46,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 15:56:46,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-20 15:56:46,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.449685534591195 [2024-06-20 15:56:46,814 INFO L175 Difference]: Start difference. First operand has 69 places, 69 transitions, 361 flow. Second operand 6 states and 143 transitions. [2024-06-20 15:56:46,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 97 transitions, 649 flow [2024-06-20 15:56:46,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 97 transitions, 598 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-20 15:56:46,830 INFO L231 Difference]: Finished difference. Result has 71 places, 73 transitions, 415 flow [2024-06-20 15:56:46,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=415, PETRI_PLACES=71, PETRI_TRANSITIONS=73} [2024-06-20 15:56:46,837 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 15 predicate places. [2024-06-20 15:56:46,837 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 73 transitions, 415 flow [2024-06-20 15:56:46,838 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) [2024-06-20 15:56:46,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:56:46,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:56:46,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-20 15:56:46,840 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)] === [2024-06-20 15:56:46,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:56:46,840 INFO L85 PathProgramCache]: Analyzing trace with hash 61260967, now seen corresponding path program 1 times [2024-06-20 15:56:46,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:56:46,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847525681] [2024-06-20 15:56:46,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:56:46,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:56:46,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:56:48,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:56:48,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:56:48,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847525681] [2024-06-20 15:56:48,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847525681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:56:48,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:56:48,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:56:48,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412617643] [2024-06-20 15:56:48,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:56:48,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:56:48,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:56:48,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:56:48,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:56:48,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-20 15:56:48,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 73 transitions, 415 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) [2024-06-20 15:56:48,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:56:48,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-20 15:56:48,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:56:52,057 INFO L124 PetriNetUnfolderBase]: 13758/19183 cut-off events. [2024-06-20 15:56:52,058 INFO L125 PetriNetUnfolderBase]: For 95082/95090 co-relation queries the response was YES. [2024-06-20 15:56:52,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72992 conditions, 19183 events. 13758/19183 cut-off events. For 95082/95090 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 106883 event pairs, 7351 based on Foata normal form. 14/19112 useless extension candidates. Maximal degree in co-relation 72970. Up to 18429 conditions per place. [2024-06-20 15:56:52,177 INFO L140 encePairwiseOnDemand]: 37/53 looper letters, 97 selfloop transitions, 32 changer transitions 0/135 dead transitions. [2024-06-20 15:56:52,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 135 transitions, 901 flow [2024-06-20 15:56:52,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:56:52,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:56:52,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-20 15:56:52,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45990566037735847 [2024-06-20 15:56:52,179 INFO L175 Difference]: Start difference. First operand has 71 places, 73 transitions, 415 flow. Second operand 8 states and 195 transitions. [2024-06-20 15:56:52,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 135 transitions, 901 flow [2024-06-20 15:56:52,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 135 transitions, 820 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-20 15:56:52,195 INFO L231 Difference]: Finished difference. Result has 78 places, 92 transitions, 569 flow [2024-06-20 15:56:52,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=569, PETRI_PLACES=78, PETRI_TRANSITIONS=92} [2024-06-20 15:56:52,196 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 22 predicate places. [2024-06-20 15:56:52,196 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 92 transitions, 569 flow [2024-06-20 15:56:52,196 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) [2024-06-20 15:56:52,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:56:52,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:56:52,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-20 15:56:52,197 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)] === [2024-06-20 15:56:52,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:56:52,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1773830685, now seen corresponding path program 2 times [2024-06-20 15:56:52,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:56:52,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380198144] [2024-06-20 15:56:52,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:56:52,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:56:52,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:56:54,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:56:54,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:56:54,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380198144] [2024-06-20 15:56:54,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380198144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:56:54,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:56:54,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:56:54,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788164811] [2024-06-20 15:56:54,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:56:54,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:56:54,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:56:54,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:56:54,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:56:54,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-20 15:56:54,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 92 transitions, 569 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) [2024-06-20 15:56:54,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:56:54,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-20 15:56:54,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:56:57,304 INFO L124 PetriNetUnfolderBase]: 13802/19242 cut-off events. [2024-06-20 15:56:57,304 INFO L125 PetriNetUnfolderBase]: For 119755/119767 co-relation queries the response was YES. [2024-06-20 15:56:57,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79001 conditions, 19242 events. 13802/19242 cut-off events. For 119755/119767 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 107019 event pairs, 7227 based on Foata normal form. 18/19175 useless extension candidates. Maximal degree in co-relation 78975. Up to 18451 conditions per place. [2024-06-20 15:56:57,427 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 95 selfloop transitions, 41 changer transitions 0/142 dead transitions. [2024-06-20 15:56:57,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 142 transitions, 1075 flow [2024-06-20 15:56:57,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:56:57,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:56:57,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-20 15:56:57,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609164420485175 [2024-06-20 15:56:57,429 INFO L175 Difference]: Start difference. First operand has 78 places, 92 transitions, 569 flow. Second operand 7 states and 171 transitions. [2024-06-20 15:56:57,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 142 transitions, 1075 flow [2024-06-20 15:56:57,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 142 transitions, 998 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-20 15:56:57,455 INFO L231 Difference]: Finished difference. Result has 83 places, 103 transitions, 716 flow [2024-06-20 15:56:57,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=716, PETRI_PLACES=83, PETRI_TRANSITIONS=103} [2024-06-20 15:56:57,456 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 27 predicate places. [2024-06-20 15:56:57,456 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 103 transitions, 716 flow [2024-06-20 15:56:57,456 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) [2024-06-20 15:56:57,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:56:57,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:56:57,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-20 15:56:57,457 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)] === [2024-06-20 15:56:57,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:56:57,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1196105591, now seen corresponding path program 3 times [2024-06-20 15:56:57,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:56:57,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276750079] [2024-06-20 15:56:57,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:56:57,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:56:57,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:56:59,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:56:59,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:56:59,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276750079] [2024-06-20 15:56:59,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276750079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:56:59,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:56:59,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:56:59,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277358657] [2024-06-20 15:56:59,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:56:59,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:56:59,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:56:59,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:56:59,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:56:59,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-20 15:56:59,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 103 transitions, 716 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) [2024-06-20 15:56:59,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:56:59,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-20 15:56:59,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:02,543 INFO L124 PetriNetUnfolderBase]: 13877/19293 cut-off events. [2024-06-20 15:57:02,543 INFO L125 PetriNetUnfolderBase]: For 150730/150730 co-relation queries the response was YES. [2024-06-20 15:57:02,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84915 conditions, 19293 events. 13877/19293 cut-off events. For 150730/150730 co-relation queries the response was YES. Maximal size of possible extension queue 637. Compared 107242 event pairs, 7117 based on Foata normal form. 6/19219 useless extension candidates. Maximal degree in co-relation 84887. Up to 18474 conditions per place. [2024-06-20 15:57:02,663 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 94 selfloop transitions, 49 changer transitions 0/149 dead transitions. [2024-06-20 15:57:02,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 149 transitions, 1312 flow [2024-06-20 15:57:02,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:57:02,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:57:02,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-20 15:57:02,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46900269541778977 [2024-06-20 15:57:02,665 INFO L175 Difference]: Start difference. First operand has 83 places, 103 transitions, 716 flow. Second operand 7 states and 174 transitions. [2024-06-20 15:57:02,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 149 transitions, 1312 flow [2024-06-20 15:57:02,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 149 transitions, 1191 flow, removed 41 selfloop flow, removed 3 redundant places. [2024-06-20 15:57:02,703 INFO L231 Difference]: Finished difference. Result has 87 places, 111 transitions, 850 flow [2024-06-20 15:57:02,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=850, PETRI_PLACES=87, PETRI_TRANSITIONS=111} [2024-06-20 15:57:02,703 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 31 predicate places. [2024-06-20 15:57:02,703 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 111 transitions, 850 flow [2024-06-20 15:57:02,704 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) [2024-06-20 15:57:02,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:02,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:02,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-20 15:57:02,704 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)] === [2024-06-20 15:57:02,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:02,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1196105405, now seen corresponding path program 1 times [2024-06-20 15:57:02,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:02,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483294205] [2024-06-20 15:57:02,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:02,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:02,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:05,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:05,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:05,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483294205] [2024-06-20 15:57:05,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483294205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:05,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:05,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:57:05,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165165032] [2024-06-20 15:57:05,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:05,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:57:05,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:05,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:57:05,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:57:05,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-20 15:57:05,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 111 transitions, 850 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) [2024-06-20 15:57:05,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:05,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-20 15:57:05,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:08,166 INFO L124 PetriNetUnfolderBase]: 13921/19332 cut-off events. [2024-06-20 15:57:08,166 INFO L125 PetriNetUnfolderBase]: For 152875/152887 co-relation queries the response was YES. [2024-06-20 15:57:08,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84332 conditions, 19332 events. 13921/19332 cut-off events. For 152875/152887 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 107098 event pairs, 6996 based on Foata normal form. 18/19261 useless extension candidates. Maximal degree in co-relation 84303. Up to 18721 conditions per place. [2024-06-20 15:57:08,305 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 124 selfloop transitions, 22 changer transitions 0/152 dead transitions. [2024-06-20 15:57:08,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 152 transitions, 1320 flow [2024-06-20 15:57:08,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:57:08,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:57:08,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-20 15:57:08,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4501347708894879 [2024-06-20 15:57:08,307 INFO L175 Difference]: Start difference. First operand has 87 places, 111 transitions, 850 flow. Second operand 7 states and 167 transitions. [2024-06-20 15:57:08,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 152 transitions, 1320 flow [2024-06-20 15:57:08,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 152 transitions, 1241 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-20 15:57:08,377 INFO L231 Difference]: Finished difference. Result has 91 places, 115 transitions, 888 flow [2024-06-20 15:57:08,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=888, PETRI_PLACES=91, PETRI_TRANSITIONS=115} [2024-06-20 15:57:08,378 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 35 predicate places. [2024-06-20 15:57:08,378 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 115 transitions, 888 flow [2024-06-20 15:57:08,378 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) [2024-06-20 15:57:08,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:08,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:08,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-20 15:57:08,378 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-20 15:57:08,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:08,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1018974071, now seen corresponding path program 4 times [2024-06-20 15:57:08,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:08,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788335017] [2024-06-20 15:57:08,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:08,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:08,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:10,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:10,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:10,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788335017] [2024-06-20 15:57:10,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788335017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:10,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:10,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:57:10,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942960357] [2024-06-20 15:57:10,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:10,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:57:10,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:10,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:57:10,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:57:10,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-20 15:57:10,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 115 transitions, 888 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) [2024-06-20 15:57:10,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:10,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-20 15:57:10,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:13,482 INFO L124 PetriNetUnfolderBase]: 13903/19360 cut-off events. [2024-06-20 15:57:13,482 INFO L125 PetriNetUnfolderBase]: For 176191/176205 co-relation queries the response was YES. [2024-06-20 15:57:13,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88505 conditions, 19360 events. 13903/19360 cut-off events. For 176191/176205 co-relation queries the response was YES. Maximal size of possible extension queue 637. Compared 107430 event pairs, 7028 based on Foata normal form. 14/19280 useless extension candidates. Maximal degree in co-relation 88474. Up to 18450 conditions per place. [2024-06-20 15:57:13,632 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 90 selfloop transitions, 59 changer transitions 0/155 dead transitions. [2024-06-20 15:57:13,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 155 transitions, 1432 flow [2024-06-20 15:57:13,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:57:13,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:57:13,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-20 15:57:13,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46630727762803237 [2024-06-20 15:57:13,634 INFO L175 Difference]: Start difference. First operand has 91 places, 115 transitions, 888 flow. Second operand 7 states and 173 transitions. [2024-06-20 15:57:13,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 155 transitions, 1432 flow [2024-06-20 15:57:13,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 155 transitions, 1347 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-20 15:57:13,700 INFO L231 Difference]: Finished difference. Result has 93 places, 119 transitions, 1008 flow [2024-06-20 15:57:13,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=803, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1008, PETRI_PLACES=93, PETRI_TRANSITIONS=119} [2024-06-20 15:57:13,701 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 37 predicate places. [2024-06-20 15:57:13,701 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 119 transitions, 1008 flow [2024-06-20 15:57:13,701 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) [2024-06-20 15:57:13,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:13,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:13,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-20 15:57:13,701 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)] === [2024-06-20 15:57:13,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:13,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1024325699, now seen corresponding path program 2 times [2024-06-20 15:57:13,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:13,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975432224] [2024-06-20 15:57:13,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:13,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:13,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:15,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:15,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:15,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975432224] [2024-06-20 15:57:15,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975432224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:15,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:15,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:57:15,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173356041] [2024-06-20 15:57:15,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:15,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:57:15,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:15,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:57:15,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:57:16,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-20 15:57:16,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 119 transitions, 1008 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) [2024-06-20 15:57:16,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:16,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-20 15:57:16,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:19,131 INFO L124 PetriNetUnfolderBase]: 13969/19448 cut-off events. [2024-06-20 15:57:19,132 INFO L125 PetriNetUnfolderBase]: For 210646/210675 co-relation queries the response was YES. [2024-06-20 15:57:19,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93488 conditions, 19448 events. 13969/19448 cut-off events. For 210646/210675 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 107942 event pairs, 7022 based on Foata normal form. 35/19391 useless extension candidates. Maximal degree in co-relation 93456. Up to 18742 conditions per place. [2024-06-20 15:57:19,287 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 124 selfloop transitions, 29 changer transitions 0/159 dead transitions. [2024-06-20 15:57:19,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 159 transitions, 1502 flow [2024-06-20 15:57:19,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:57:19,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:57:19,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-20 15:57:19,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4501347708894879 [2024-06-20 15:57:19,289 INFO L175 Difference]: Start difference. First operand has 93 places, 119 transitions, 1008 flow. Second operand 7 states and 167 transitions. [2024-06-20 15:57:19,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 159 transitions, 1502 flow [2024-06-20 15:57:19,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 159 transitions, 1329 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-20 15:57:19,368 INFO L231 Difference]: Finished difference. Result has 95 places, 123 transitions, 978 flow [2024-06-20 15:57:19,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=978, PETRI_PLACES=95, PETRI_TRANSITIONS=123} [2024-06-20 15:57:19,368 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 39 predicate places. [2024-06-20 15:57:19,369 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 123 transitions, 978 flow [2024-06-20 15:57:19,369 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) [2024-06-20 15:57:19,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:19,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:19,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-20 15:57:19,369 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)] === [2024-06-20 15:57:19,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:19,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1018736735, now seen corresponding path program 3 times [2024-06-20 15:57:19,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:19,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309362107] [2024-06-20 15:57:19,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:19,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:19,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:21,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:21,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:21,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309362107] [2024-06-20 15:57:21,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309362107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:21,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:21,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:57:21,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209133020] [2024-06-20 15:57:21,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:21,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:57:21,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:21,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:57:21,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:57:21,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-20 15:57:21,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 123 transitions, 978 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) [2024-06-20 15:57:21,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:21,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-20 15:57:21,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:24,843 INFO L124 PetriNetUnfolderBase]: 13951/19394 cut-off events. [2024-06-20 15:57:24,843 INFO L125 PetriNetUnfolderBase]: For 241695/241724 co-relation queries the response was YES. [2024-06-20 15:57:24,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97176 conditions, 19394 events. 13951/19394 cut-off events. For 241695/241724 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 108023 event pairs, 6671 based on Foata normal form. 32/19393 useless extension candidates. Maximal degree in co-relation 97143. Up to 18635 conditions per place. [2024-06-20 15:57:24,989 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 125 selfloop transitions, 39 changer transitions 0/170 dead transitions. [2024-06-20 15:57:24,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 170 transitions, 1585 flow [2024-06-20 15:57:24,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:57:24,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:57:24,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-20 15:57:24,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4528301886792453 [2024-06-20 15:57:24,990 INFO L175 Difference]: Start difference. First operand has 95 places, 123 transitions, 978 flow. Second operand 7 states and 168 transitions. [2024-06-20 15:57:24,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 170 transitions, 1585 flow [2024-06-20 15:57:25,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 170 transitions, 1427 flow, removed 51 selfloop flow, removed 5 redundant places. [2024-06-20 15:57:25,084 INFO L231 Difference]: Finished difference. Result has 98 places, 134 transitions, 1102 flow [2024-06-20 15:57:25,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=873, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1102, PETRI_PLACES=98, PETRI_TRANSITIONS=134} [2024-06-20 15:57:25,085 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 42 predicate places. [2024-06-20 15:57:25,085 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 134 transitions, 1102 flow [2024-06-20 15:57:25,085 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) [2024-06-20 15:57:25,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:25,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:25,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-20 15:57:25,086 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-20 15:57:25,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:25,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1976611076, now seen corresponding path program 1 times [2024-06-20 15:57:25,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:25,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603449450] [2024-06-20 15:57:25,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:25,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:25,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:26,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:26,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:26,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603449450] [2024-06-20 15:57:26,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603449450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:26,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:26,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-20 15:57:26,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94249052] [2024-06-20 15:57:26,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:26,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-20 15:57:26,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:26,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-20 15:57:26,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-20 15:57:27,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-20 15:57:27,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 134 transitions, 1102 flow. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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) [2024-06-20 15:57:27,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:27,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-20 15:57:27,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:29,505 INFO L124 PetriNetUnfolderBase]: 11955/17697 cut-off events. [2024-06-20 15:57:29,506 INFO L125 PetriNetUnfolderBase]: For 227683/227683 co-relation queries the response was YES. [2024-06-20 15:57:29,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89623 conditions, 17697 events. 11955/17697 cut-off events. For 227683/227683 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 107541 event pairs, 5760 based on Foata normal form. 2/17680 useless extension candidates. Maximal degree in co-relation 89588. Up to 16208 conditions per place. [2024-06-20 15:57:29,646 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 135 selfloop transitions, 10 changer transitions 0/152 dead transitions. [2024-06-20 15:57:29,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 152 transitions, 1486 flow [2024-06-20 15:57:29,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 15:57:29,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 15:57:29,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-06-20 15:57:29,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4490566037735849 [2024-06-20 15:57:29,647 INFO L175 Difference]: Start difference. First operand has 98 places, 134 transitions, 1102 flow. Second operand 5 states and 119 transitions. [2024-06-20 15:57:29,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 152 transitions, 1486 flow [2024-06-20 15:57:29,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 152 transitions, 1394 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-06-20 15:57:29,844 INFO L231 Difference]: Finished difference. Result has 100 places, 138 transitions, 1097 flow [2024-06-20 15:57:29,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1010, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1097, PETRI_PLACES=100, PETRI_TRANSITIONS=138} [2024-06-20 15:57:29,844 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 44 predicate places. [2024-06-20 15:57:29,844 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 138 transitions, 1097 flow [2024-06-20 15:57:29,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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) [2024-06-20 15:57:29,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:29,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:29,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-20 15:57:29,845 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)] === [2024-06-20 15:57:29,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:29,845 INFO L85 PathProgramCache]: Analyzing trace with hash -845911884, now seen corresponding path program 1 times [2024-06-20 15:57:29,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:29,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625859281] [2024-06-20 15:57:29,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:29,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:29,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:32,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:32,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:32,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625859281] [2024-06-20 15:57:32,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625859281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:32,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:32,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:57:32,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654248186] [2024-06-20 15:57:32,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:32,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:57:32,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:32,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:57:32,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:57:32,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-20 15:57:32,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 138 transitions, 1097 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) [2024-06-20 15:57:32,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:32,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-20 15:57:32,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:35,803 INFO L124 PetriNetUnfolderBase]: 13935/19692 cut-off events. [2024-06-20 15:57:35,803 INFO L125 PetriNetUnfolderBase]: For 293232/293244 co-relation queries the response was YES. [2024-06-20 15:57:35,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105615 conditions, 19692 events. 13935/19692 cut-off events. For 293232/293244 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 111564 event pairs, 6857 based on Foata normal form. 15/19706 useless extension candidates. Maximal degree in co-relation 105578. Up to 18611 conditions per place. [2024-06-20 15:57:35,986 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 128 selfloop transitions, 43 changer transitions 0/177 dead transitions. [2024-06-20 15:57:35,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 177 transitions, 1571 flow [2024-06-20 15:57:35,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:57:35,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:57:35,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-20 15:57:35,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609164420485175 [2024-06-20 15:57:35,988 INFO L175 Difference]: Start difference. First operand has 100 places, 138 transitions, 1097 flow. Second operand 7 states and 171 transitions. [2024-06-20 15:57:35,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 177 transitions, 1571 flow [2024-06-20 15:57:36,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 177 transitions, 1480 flow, removed 38 selfloop flow, removed 3 redundant places. [2024-06-20 15:57:36,124 INFO L231 Difference]: Finished difference. Result has 104 places, 138 transitions, 1115 flow [2024-06-20 15:57:36,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1006, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1115, PETRI_PLACES=104, PETRI_TRANSITIONS=138} [2024-06-20 15:57:36,130 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 48 predicate places. [2024-06-20 15:57:36,130 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 138 transitions, 1115 flow [2024-06-20 15:57:36,130 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) [2024-06-20 15:57:36,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:36,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:36,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-20 15:57:36,131 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)] === [2024-06-20 15:57:36,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:36,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1888775209, now seen corresponding path program 1 times [2024-06-20 15:57:36,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:36,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734821895] [2024-06-20 15:57:36,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:36,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:36,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:38,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:38,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:38,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734821895] [2024-06-20 15:57:38,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734821895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:38,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:38,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:57:38,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622036493] [2024-06-20 15:57:38,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:38,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:57:38,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:38,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:57:38,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:57:39,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-20 15:57:39,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 138 transitions, 1115 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) [2024-06-20 15:57:39,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:39,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-20 15:57:39,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:42,654 INFO L124 PetriNetUnfolderBase]: 14023/19734 cut-off events. [2024-06-20 15:57:42,654 INFO L125 PetriNetUnfolderBase]: For 321629/321641 co-relation queries the response was YES. [2024-06-20 15:57:42,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107974 conditions, 19734 events. 14023/19734 cut-off events. For 321629/321641 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 111233 event pairs, 6742 based on Foata normal form. 24/19750 useless extension candidates. Maximal degree in co-relation 107936. Up to 18662 conditions per place. [2024-06-20 15:57:42,838 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 139 selfloop transitions, 45 changer transitions 0/190 dead transitions. [2024-06-20 15:57:42,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 190 transitions, 1721 flow [2024-06-20 15:57:42,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:57:42,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:57:42,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-20 15:57:42,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45990566037735847 [2024-06-20 15:57:42,840 INFO L175 Difference]: Start difference. First operand has 104 places, 138 transitions, 1115 flow. Second operand 8 states and 195 transitions. [2024-06-20 15:57:42,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 190 transitions, 1721 flow [2024-06-20 15:57:42,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 190 transitions, 1623 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-20 15:57:42,962 INFO L231 Difference]: Finished difference. Result has 106 places, 142 transitions, 1205 flow [2024-06-20 15:57:42,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1017, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1205, PETRI_PLACES=106, PETRI_TRANSITIONS=142} [2024-06-20 15:57:42,962 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 50 predicate places. [2024-06-20 15:57:42,962 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 142 transitions, 1205 flow [2024-06-20 15:57:42,963 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) [2024-06-20 15:57:42,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:42,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:42,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-20 15:57:42,963 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-20 15:57:42,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:42,963 INFO L85 PathProgramCache]: Analyzing trace with hash -842102449, now seen corresponding path program 2 times [2024-06-20 15:57:42,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:42,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092180102] [2024-06-20 15:57:42,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:42,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:42,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:45,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:45,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:45,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092180102] [2024-06-20 15:57:45,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092180102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:45,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:45,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:57:45,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680043759] [2024-06-20 15:57:45,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:45,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:57:45,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:45,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:57:45,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:57:46,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-20 15:57:46,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 142 transitions, 1205 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) [2024-06-20 15:57:46,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:46,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-20 15:57:46,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:49,496 INFO L124 PetriNetUnfolderBase]: 14111/19914 cut-off events. [2024-06-20 15:57:49,496 INFO L125 PetriNetUnfolderBase]: For 361650/361650 co-relation queries the response was YES. [2024-06-20 15:57:49,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113270 conditions, 19914 events. 14111/19914 cut-off events. For 361650/361650 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 112690 event pairs, 6735 based on Foata normal form. 12/19925 useless extension candidates. Maximal degree in co-relation 113231. Up to 18722 conditions per place. [2024-06-20 15:57:49,663 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 131 selfloop transitions, 53 changer transitions 0/190 dead transitions. [2024-06-20 15:57:49,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 190 transitions, 1799 flow [2024-06-20 15:57:49,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:57:49,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:57:49,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-20 15:57:49,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45990566037735847 [2024-06-20 15:57:49,666 INFO L175 Difference]: Start difference. First operand has 106 places, 142 transitions, 1205 flow. Second operand 8 states and 195 transitions. [2024-06-20 15:57:49,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 190 transitions, 1799 flow [2024-06-20 15:57:49,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 190 transitions, 1645 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-20 15:57:49,810 INFO L231 Difference]: Finished difference. Result has 108 places, 146 transitions, 1262 flow [2024-06-20 15:57:49,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1051, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1262, PETRI_PLACES=108, PETRI_TRANSITIONS=146} [2024-06-20 15:57:49,810 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 52 predicate places. [2024-06-20 15:57:49,810 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 146 transitions, 1262 flow [2024-06-20 15:57:49,811 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) [2024-06-20 15:57:49,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:49,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:49,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-20 15:57:49,811 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)] === [2024-06-20 15:57:49,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:49,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1575440017, now seen corresponding path program 3 times [2024-06-20 15:57:49,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:49,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235733267] [2024-06-20 15:57:49,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:49,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:49,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:52,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:52,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:52,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235733267] [2024-06-20 15:57:52,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235733267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:52,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:52,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:57:52,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24871147] [2024-06-20 15:57:52,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:52,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:57:52,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:52,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:57:52,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:57:52,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-20 15:57:52,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 146 transitions, 1262 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) [2024-06-20 15:57:52,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:52,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-20 15:57:52,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:56,259 INFO L124 PetriNetUnfolderBase]: 14348/20202 cut-off events. [2024-06-20 15:57:56,260 INFO L125 PetriNetUnfolderBase]: For 416009/416021 co-relation queries the response was YES. [2024-06-20 15:57:56,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119808 conditions, 20202 events. 14348/20202 cut-off events. For 416009/416021 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 113778 event pairs, 6779 based on Foata normal form. 30/20224 useless extension candidates. Maximal degree in co-relation 119768. Up to 19129 conditions per place. [2024-06-20 15:57:56,471 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 169 selfloop transitions, 31 changer transitions 0/206 dead transitions. [2024-06-20 15:57:56,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 206 transitions, 2134 flow [2024-06-20 15:57:56,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:57:56,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:57:56,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-20 15:57:56,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4669811320754717 [2024-06-20 15:57:56,476 INFO L175 Difference]: Start difference. First operand has 108 places, 146 transitions, 1262 flow. Second operand 8 states and 198 transitions. [2024-06-20 15:57:56,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 206 transitions, 2134 flow [2024-06-20 15:57:56,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 206 transitions, 1955 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-20 15:57:56,637 INFO L231 Difference]: Finished difference. Result has 111 places, 156 transitions, 1384 flow [2024-06-20 15:57:56,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1083, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1384, PETRI_PLACES=111, PETRI_TRANSITIONS=156} [2024-06-20 15:57:56,638 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 55 predicate places. [2024-06-20 15:57:56,638 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 156 transitions, 1384 flow [2024-06-20 15:57:56,638 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) [2024-06-20 15:57:56,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:56,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:56,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-20 15:57:56,638 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)] === [2024-06-20 15:57:56,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:56,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1523417455, now seen corresponding path program 4 times [2024-06-20 15:57:56,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:56,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955935550] [2024-06-20 15:57:56,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:56,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:56,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:59,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:59,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:59,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955935550] [2024-06-20 15:57:59,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955935550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:59,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:59,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:57:59,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787940609] [2024-06-20 15:57:59,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:59,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:57:59,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:59,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:57:59,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:57:59,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-20 15:57:59,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 156 transitions, 1384 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) [2024-06-20 15:57:59,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:59,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-20 15:57:59,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:58:03,725 INFO L124 PetriNetUnfolderBase]: 14542/20498 cut-off events. [2024-06-20 15:58:03,725 INFO L125 PetriNetUnfolderBase]: For 474764/474793 co-relation queries the response was YES. [2024-06-20 15:58:03,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127460 conditions, 20498 events. 14542/20498 cut-off events. For 474764/474793 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 115580 event pairs, 6672 based on Foata normal form. 44/20539 useless extension candidates. Maximal degree in co-relation 127418. Up to 19372 conditions per place. [2024-06-20 15:58:04,042 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 167 selfloop transitions, 41 changer transitions 0/214 dead transitions. [2024-06-20 15:58:04,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 214 transitions, 2283 flow [2024-06-20 15:58:04,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:58:04,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:58:04,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-20 15:58:04,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46462264150943394 [2024-06-20 15:58:04,045 INFO L175 Difference]: Start difference. First operand has 111 places, 156 transitions, 1384 flow. Second operand 8 states and 197 transitions. [2024-06-20 15:58:04,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 214 transitions, 2283 flow [2024-06-20 15:58:04,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 214 transitions, 2165 flow, removed 48 selfloop flow, removed 4 redundant places. [2024-06-20 15:58:04,197 INFO L231 Difference]: Finished difference. Result has 115 places, 165 transitions, 1579 flow [2024-06-20 15:58:04,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1266, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1579, PETRI_PLACES=115, PETRI_TRANSITIONS=165} [2024-06-20 15:58:04,198 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 59 predicate places. [2024-06-20 15:58:04,198 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 165 transitions, 1579 flow [2024-06-20 15:58:04,198 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) [2024-06-20 15:58:04,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:58:04,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:58:04,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-20 15:58:04,199 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)] === [2024-06-20 15:58:04,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:58:04,199 INFO L85 PathProgramCache]: Analyzing trace with hash -698211919, now seen corresponding path program 5 times [2024-06-20 15:58:04,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:58:04,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644298805] [2024-06-20 15:58:04,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:58:04,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:58:04,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:58:06,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:58:06,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:58:06,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644298805] [2024-06-20 15:58:06,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644298805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:58:06,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:58:06,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:58:06,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367009550] [2024-06-20 15:58:06,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:58:06,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:58:06,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:58:06,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:58:06,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:58:06,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-20 15:58:06,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 165 transitions, 1579 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) [2024-06-20 15:58:06,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:58:06,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-20 15:58:06,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand