./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix055_power.oepc_pso.oepc_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix055_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix055_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix055_power.oepc_pso.oepc_rmo.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 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:41:40,513 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:41:40,571 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:41:40,576 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:41:40,576 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:41:40,604 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:41:40,604 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:41:40,605 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:41:40,605 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:41:40,605 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:41:40,606 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:41:40,606 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:41:40,607 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:41:40,607 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:41:40,607 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:41:40,608 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:41:40,612 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:41:40,615 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:41:40,615 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:41:40,616 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:41:40,617 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:41:40,617 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:41:40,618 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:41:40,618 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:41:40,618 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:41:40,618 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:41:40,619 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:41:40,619 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:41:40,620 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:41:40,620 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:41:40,621 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:41:40,621 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:41:40,621 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:41:40,622 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:41:40,622 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:41:40,622 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:41:40,622 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:41:40,624 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:41:40,624 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:41:40,624 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:41:40,624 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:41:40,628 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:41:40,628 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:41:40,628 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:41:40,959 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:41:40,981 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:41:40,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:41:40,986 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:41:40,987 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:41:40,988 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix055_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 01:41:42,106 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:41:42,365 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:41:42,366 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix055_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 01:41:42,405 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddbc18a32/de9bf1746845442381d78d16d9df4942/FLAG7b9dd5bfe [2024-06-28 01:41:42,417 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddbc18a32/de9bf1746845442381d78d16d9df4942 [2024-06-28 01:41:42,419 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:41:42,427 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:41:42,427 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix055_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-28 01:41:42,642 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:41:42,644 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:41:42,645 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:41:42,645 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:41:42,650 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:41:42,651 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:41:42" (1/2) ... [2024-06-28 01:41:42,652 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fee378f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:41:42, skipping insertion in model container [2024-06-28 01:41:42,652 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:41:42" (1/2) ... [2024-06-28 01:41:42,653 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5da14e2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:41:42, skipping insertion in model container [2024-06-28 01:41:42,654 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:41:42" (2/2) ... [2024-06-28 01:41:42,654 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fee378f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:41:42, skipping insertion in model container [2024-06-28 01:41:42,655 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:41:42" (2/2) ... [2024-06-28 01:41:42,655 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:41:42,767 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:41:42,768 INFO L97 edCorrectnessWitness]: Location invariant before [L862-L862] ((((((((((((((((((((! multithreaded || a$read_delayed == (_Bool)0) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff0_thd4 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$r_buff1_thd4 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (y == 0 || y == 1)) && ((x == 0 || x == 1) || x == 2)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$read_delayed_var == 0) [2024-06-28 01:41:42,769 INFO L97 edCorrectnessWitness]: Location invariant before [L867-L867] ((((((((((((((((((((! multithreaded || a$read_delayed == (_Bool)0) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff0_thd4 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$r_buff1_thd4 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (y == 0 || y == 1)) && ((x == 0 || x == 1) || x == 2)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$read_delayed_var == 0) [2024-06-28 01:41:42,769 INFO L97 edCorrectnessWitness]: Location invariant before [L866-L866] ((((((((((((((((((((! multithreaded || a$read_delayed == (_Bool)0) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff0_thd4 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$r_buff1_thd4 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (y == 0 || y == 1)) && ((x == 0 || x == 1) || x == 2)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$read_delayed_var == 0) [2024-06-28 01:41:42,769 INFO L97 edCorrectnessWitness]: Location invariant before [L864-L864] ((((((((((((((((((((! multithreaded || a$read_delayed == (_Bool)0) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff0_thd4 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$r_buff1_thd4 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (y == 0 || y == 1)) && ((x == 0 || x == 1) || x == 2)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$read_delayed_var == 0) [2024-06-28 01:41:42,770 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:41:42,770 INFO L106 edCorrectnessWitness]: ghost_update [L860-L860] multithreaded = 1; [2024-06-28 01:41:42,816 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:41:42,957 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix055_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-06-28 01:41:43,148 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:41:43,158 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:41:43,190 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix055_power.oepc_pso.oepc_rmo.oepc.i[969,982] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:41:43,301 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:41:43,338 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:41:43,339 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:41:43 WrapperNode [2024-06-28 01:41:43,340 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:41:43,341 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:41:43,341 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:41:43,342 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:41:43,349 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:41:43" (1/1) ... [2024-06-28 01:41:43,382 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:41:43" (1/1) ... [2024-06-28 01:41:43,449 INFO L138 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 133 [2024-06-28 01:41:43,449 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:41:43,450 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:41:43,450 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:41:43,450 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:41:43,463 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:41:43" (1/1) ... [2024-06-28 01:41:43,463 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:41:43" (1/1) ... [2024-06-28 01:41:43,478 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:41:43" (1/1) ... [2024-06-28 01:41:43,532 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 01:41:43,532 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:41:43" (1/1) ... [2024-06-28 01:41:43,533 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:41:43" (1/1) ... [2024-06-28 01:41:43,542 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:41:43" (1/1) ... [2024-06-28 01:41:43,544 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:41:43" (1/1) ... [2024-06-28 01:41:43,547 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:41:43" (1/1) ... [2024-06-28 01:41:43,564 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:41:43" (1/1) ... [2024-06-28 01:41:43,568 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:41:43,574 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:41:43,598 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:41:43,608 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:41:43,609 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:41:43" (1/1) ... [2024-06-28 01:41:43,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:41:43,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:41:43,649 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 01:41:43,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 01:41:43,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:41:43,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:41:43,697 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:41:43,697 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:41:43,697 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:41:43,698 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:41:43,698 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:41:43,698 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:41:43,698 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-28 01:41:43,698 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-28 01:41:43,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:41:43,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:41:43,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:41:43,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:41:43,702 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 01:41:43,867 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:41:43,869 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:41:44,320 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:41:44,320 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:41:44,521 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:41:44,522 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:41:44,522 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:41:44 BoogieIcfgContainer [2024-06-28 01:41:44,522 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:41:44,526 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:41:44,526 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:41:44,530 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:41:44,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:41:42" (1/4) ... [2024-06-28 01:41:44,531 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26ebe29b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:41:44, skipping insertion in model container [2024-06-28 01:41:44,531 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:41:42" (2/4) ... [2024-06-28 01:41:44,532 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26ebe29b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:41:44, skipping insertion in model container [2024-06-28 01:41:44,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:41:43" (3/4) ... [2024-06-28 01:41:44,533 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26ebe29b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:41:44, skipping insertion in model container [2024-06-28 01:41:44,533 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:41:44" (4/4) ... [2024-06-28 01:41:44,534 INFO L112 eAbstractionObserver]: Analyzing ICFG mix055_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 01:41:44,551 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:41:44,552 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-06-28 01:41:44,552 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:41:44,650 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:41:44,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 57 transitions, 130 flow [2024-06-28 01:41:44,734 INFO L124 PetriNetUnfolderBase]: 1/53 cut-off events. [2024-06-28 01:41:44,734 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:41:44,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 53 events. 1/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 95 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2024-06-28 01:41:44,738 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 57 transitions, 130 flow [2024-06-28 01:41:44,743 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 53 transitions, 118 flow [2024-06-28 01:41:44,758 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:41:44,766 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;@6bf46c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:41:44,767 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-06-28 01:41:44,774 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:41:44,774 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:41:44,774 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:41:44,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:44,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:41:44,776 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:41:44,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:44,784 INFO L85 PathProgramCache]: Analyzing trace with hash 372205070, now seen corresponding path program 1 times [2024-06-28 01:41:44,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:44,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182239041] [2024-06-28 01:41:44,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:44,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:44,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:45,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:45,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:45,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182239041] [2024-06-28 01:41:45,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182239041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:45,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:45,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:41:45,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414661111] [2024-06-28 01:41:45,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:45,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:41:45,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:45,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:41:45,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:41:46,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 57 [2024-06-28 01:41:46,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 53 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:46,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:46,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 57 [2024-06-28 01:41:46,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:51,457 INFO L124 PetriNetUnfolderBase]: 30391/45316 cut-off events. [2024-06-28 01:41:51,457 INFO L125 PetriNetUnfolderBase]: For 250/250 co-relation queries the response was YES. [2024-06-28 01:41:51,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86044 conditions, 45316 events. 30391/45316 cut-off events. For 250/250 co-relation queries the response was YES. Maximal size of possible extension queue 1622. Compared 329732 event pairs, 25295 based on Foata normal form. 1261/43662 useless extension candidates. Maximal degree in co-relation 86031. Up to 40201 conditions per place. [2024-06-28 01:41:51,790 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 53 selfloop transitions, 6 changer transitions 0/71 dead transitions. [2024-06-28 01:41:51,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 71 transitions, 281 flow [2024-06-28 01:41:51,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:41:51,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:41:51,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-06-28 01:41:51,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6608187134502924 [2024-06-28 01:41:51,804 INFO L175 Difference]: Start difference. First operand has 65 places, 53 transitions, 118 flow. Second operand 3 states and 113 transitions. [2024-06-28 01:41:51,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 71 transitions, 281 flow [2024-06-28 01:41:51,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 71 transitions, 274 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 01:41:51,814 INFO L231 Difference]: Finished difference. Result has 64 places, 57 transitions, 158 flow [2024-06-28 01:41:51,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=64, PETRI_TRANSITIONS=57} [2024-06-28 01:41:51,818 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -1 predicate places. [2024-06-28 01:41:51,818 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 57 transitions, 158 flow [2024-06-28 01:41:51,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:51,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:51,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:41:51,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:41:51,819 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:41:51,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:51,820 INFO L85 PathProgramCache]: Analyzing trace with hash 372205923, now seen corresponding path program 1 times [2024-06-28 01:41:51,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:51,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694224401] [2024-06-28 01:41:51,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:51,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:51,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:51,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:51,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:51,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694224401] [2024-06-28 01:41:51,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694224401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:51,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:51,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:41:51,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949611191] [2024-06-28 01:41:51,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:51,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:41:51,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:51,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:41:51,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:41:51,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 57 [2024-06-28 01:41:51,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 57 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:51,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:51,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 57 [2024-06-28 01:41:51,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:53,076 INFO L124 PetriNetUnfolderBase]: 5065/8428 cut-off events. [2024-06-28 01:41:53,077 INFO L125 PetriNetUnfolderBase]: For 694/694 co-relation queries the response was YES. [2024-06-28 01:41:53,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16528 conditions, 8428 events. 5065/8428 cut-off events. For 694/694 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 63157 event pairs, 2637 based on Foata normal form. 0/7872 useless extension candidates. Maximal degree in co-relation 16516. Up to 5845 conditions per place. [2024-06-28 01:41:53,145 INFO L140 encePairwiseOnDemand]: 54/57 looper letters, 45 selfloop transitions, 3 changer transitions 0/76 dead transitions. [2024-06-28 01:41:53,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 76 transitions, 293 flow [2024-06-28 01:41:53,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:41:53,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:41:53,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2024-06-28 01:41:53,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7894736842105263 [2024-06-28 01:41:53,151 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 158 flow. Second operand 3 states and 135 transitions. [2024-06-28 01:41:53,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 76 transitions, 293 flow [2024-06-28 01:41:53,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 76 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:41:53,159 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 150 flow [2024-06-28 01:41:53,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=64, PETRI_TRANSITIONS=55} [2024-06-28 01:41:53,161 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -1 predicate places. [2024-06-28 01:41:53,163 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 150 flow [2024-06-28 01:41:53,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:53,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:53,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:53,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:41:53,169 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:41:53,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:53,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1206843468, now seen corresponding path program 1 times [2024-06-28 01:41:53,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:53,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716704395] [2024-06-28 01:41:53,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:53,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:53,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:53,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:53,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:53,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716704395] [2024-06-28 01:41:53,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716704395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:53,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:53,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:41:53,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14112477] [2024-06-28 01:41:53,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:53,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:41:53,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:53,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:41:53,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:41:54,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 57 [2024-06-28 01:41:54,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:54,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:54,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 57 [2024-06-28 01:41:54,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:57,481 INFO L124 PetriNetUnfolderBase]: 25852/38647 cut-off events. [2024-06-28 01:41:57,481 INFO L125 PetriNetUnfolderBase]: For 8513/8513 co-relation queries the response was YES. [2024-06-28 01:41:57,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81764 conditions, 38647 events. 25852/38647 cut-off events. For 8513/8513 co-relation queries the response was YES. Maximal size of possible extension queue 1385. Compared 273342 event pairs, 20723 based on Foata normal form. 4/37567 useless extension candidates. Maximal degree in co-relation 81751. Up to 34234 conditions per place. [2024-06-28 01:41:57,682 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 65 selfloop transitions, 10 changer transitions 2/89 dead transitions. [2024-06-28 01:41:57,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 89 transitions, 400 flow [2024-06-28 01:41:57,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:41:57,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:41:57,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2024-06-28 01:41:57,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.618421052631579 [2024-06-28 01:41:57,684 INFO L175 Difference]: Start difference. First operand has 64 places, 55 transitions, 150 flow. Second operand 4 states and 141 transitions. [2024-06-28 01:41:57,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 89 transitions, 400 flow [2024-06-28 01:41:57,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 89 transitions, 392 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:41:57,690 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 231 flow [2024-06-28 01:41:57,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=231, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2024-06-28 01:41:57,691 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 2 predicate places. [2024-06-28 01:41:57,691 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 231 flow [2024-06-28 01:41:57,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:57,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:57,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:57,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:41:57,693 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:41:57,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:57,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1242556291, now seen corresponding path program 1 times [2024-06-28 01:41:57,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:57,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718243707] [2024-06-28 01:41:57,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:57,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:57,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:58,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:58,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:58,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718243707] [2024-06-28 01:41:58,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718243707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:58,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:58,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:41:58,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247063375] [2024-06-28 01:41:58,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:58,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:41:58,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:58,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:41:58,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:41:58,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 57 [2024-06-28 01:41:58,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 231 flow. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:58,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:58,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 57 [2024-06-28 01:41:58,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:01,866 INFO L124 PetriNetUnfolderBase]: 22461/34216 cut-off events. [2024-06-28 01:42:01,866 INFO L125 PetriNetUnfolderBase]: For 15276/15276 co-relation queries the response was YES. [2024-06-28 01:42:01,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78357 conditions, 34216 events. 22461/34216 cut-off events. For 15276/15276 co-relation queries the response was YES. Maximal size of possible extension queue 1287. Compared 246410 event pairs, 14886 based on Foata normal form. 10/33143 useless extension candidates. Maximal degree in co-relation 78342. Up to 29598 conditions per place. [2024-06-28 01:42:02,081 INFO L140 encePairwiseOnDemand]: 43/57 looper letters, 88 selfloop transitions, 23 changer transitions 0/123 dead transitions. [2024-06-28 01:42:02,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 123 transitions, 653 flow [2024-06-28 01:42:02,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:42:02,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:42:02,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 184 transitions. [2024-06-28 01:42:02,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6456140350877193 [2024-06-28 01:42:02,084 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 231 flow. Second operand 5 states and 184 transitions. [2024-06-28 01:42:02,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 123 transitions, 653 flow [2024-06-28 01:42:02,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 123 transitions, 638 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-28 01:42:02,181 INFO L231 Difference]: Finished difference. Result has 72 places, 78 transitions, 380 flow [2024-06-28 01:42:02,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=380, PETRI_PLACES=72, PETRI_TRANSITIONS=78} [2024-06-28 01:42:02,183 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 7 predicate places. [2024-06-28 01:42:02,183 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 78 transitions, 380 flow [2024-06-28 01:42:02,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:02,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:02,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:02,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:42:02,184 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:42:02,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:02,185 INFO L85 PathProgramCache]: Analyzing trace with hash 135462539, now seen corresponding path program 1 times [2024-06-28 01:42:02,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:02,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193949601] [2024-06-28 01:42:02,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:02,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:02,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:03,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:03,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:03,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193949601] [2024-06-28 01:42:03,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193949601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:03,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:03,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:42:03,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466625991] [2024-06-28 01:42:03,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:03,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:42:03,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:03,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:42:03,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:42:03,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 57 [2024-06-28 01:42:03,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 78 transitions, 380 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:03,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:03,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 57 [2024-06-28 01:42:03,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:06,290 INFO L124 PetriNetUnfolderBase]: 22545/30783 cut-off events. [2024-06-28 01:42:06,290 INFO L125 PetriNetUnfolderBase]: For 37084/37086 co-relation queries the response was YES. [2024-06-28 01:42:06,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88311 conditions, 30783 events. 22545/30783 cut-off events. For 37084/37086 co-relation queries the response was YES. Maximal size of possible extension queue 1142. Compared 184255 event pairs, 10230 based on Foata normal form. 10/30597 useless extension candidates. Maximal degree in co-relation 88292. Up to 29492 conditions per place. [2024-06-28 01:42:06,695 INFO L140 encePairwiseOnDemand]: 44/57 looper letters, 109 selfloop transitions, 42 changer transitions 0/163 dead transitions. [2024-06-28 01:42:06,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 163 transitions, 1040 flow [2024-06-28 01:42:06,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:42:06,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:42:06,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 224 transitions. [2024-06-28 01:42:06,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6549707602339181 [2024-06-28 01:42:06,697 INFO L175 Difference]: Start difference. First operand has 72 places, 78 transitions, 380 flow. Second operand 6 states and 224 transitions. [2024-06-28 01:42:06,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 163 transitions, 1040 flow [2024-06-28 01:42:06,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 163 transitions, 1028 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-28 01:42:06,714 INFO L231 Difference]: Finished difference. Result has 81 places, 97 transitions, 649 flow [2024-06-28 01:42:06,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=649, PETRI_PLACES=81, PETRI_TRANSITIONS=97} [2024-06-28 01:42:06,717 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 16 predicate places. [2024-06-28 01:42:06,717 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 97 transitions, 649 flow [2024-06-28 01:42:06,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:06,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:06,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:06,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:42:06,718 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:42:06,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:06,718 INFO L85 PathProgramCache]: Analyzing trace with hash -95626660, now seen corresponding path program 1 times [2024-06-28 01:42:06,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:06,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110734898] [2024-06-28 01:42:06,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:06,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:06,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:07,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:07,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:07,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110734898] [2024-06-28 01:42:07,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110734898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:07,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:07,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:42:07,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094215989] [2024-06-28 01:42:07,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:07,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:42:07,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:07,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:42:07,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:42:07,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 57 [2024-06-28 01:42:07,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 97 transitions, 649 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:07,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:07,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 57 [2024-06-28 01:42:07,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:11,454 INFO L124 PetriNetUnfolderBase]: 22831/31201 cut-off events. [2024-06-28 01:42:11,454 INFO L125 PetriNetUnfolderBase]: For 73541/73545 co-relation queries the response was YES. [2024-06-28 01:42:11,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103411 conditions, 31201 events. 22831/31201 cut-off events. For 73541/73545 co-relation queries the response was YES. Maximal size of possible extension queue 1150. Compared 186928 event pairs, 8516 based on Foata normal form. 40/31045 useless extension candidates. Maximal degree in co-relation 103386. Up to 29532 conditions per place. [2024-06-28 01:42:11,675 INFO L140 encePairwiseOnDemand]: 44/57 looper letters, 123 selfloop transitions, 45 changer transitions 0/180 dead transitions. [2024-06-28 01:42:11,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 180 transitions, 1315 flow [2024-06-28 01:42:11,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:42:11,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:42:11,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 257 transitions. [2024-06-28 01:42:11,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6441102756892231 [2024-06-28 01:42:11,677 INFO L175 Difference]: Start difference. First operand has 81 places, 97 transitions, 649 flow. Second operand 7 states and 257 transitions. [2024-06-28 01:42:11,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 180 transitions, 1315 flow [2024-06-28 01:42:11,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 180 transitions, 1279 flow, removed 18 selfloop flow, removed 0 redundant places. [2024-06-28 01:42:11,724 INFO L231 Difference]: Finished difference. Result has 87 places, 99 transitions, 744 flow [2024-06-28 01:42:11,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=744, PETRI_PLACES=87, PETRI_TRANSITIONS=99} [2024-06-28 01:42:11,725 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 22 predicate places. [2024-06-28 01:42:11,725 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 99 transitions, 744 flow [2024-06-28 01:42:11,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:11,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:11,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:11,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:42:11,726 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:42:11,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:11,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1357957914, now seen corresponding path program 1 times [2024-06-28 01:42:11,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:11,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146818097] [2024-06-28 01:42:11,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:11,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:11,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:12,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:12,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:12,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146818097] [2024-06-28 01:42:12,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146818097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:12,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:12,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:42:12,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549576338] [2024-06-28 01:42:12,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:12,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:42:12,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:12,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:42:12,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:42:12,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-28 01:42:12,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 99 transitions, 744 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:12,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:12,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-28 01:42:12,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:16,831 INFO L124 PetriNetUnfolderBase]: 26434/39539 cut-off events. [2024-06-28 01:42:16,831 INFO L125 PetriNetUnfolderBase]: For 89872/89872 co-relation queries the response was YES. [2024-06-28 01:42:16,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120574 conditions, 39539 events. 26434/39539 cut-off events. For 89872/89872 co-relation queries the response was YES. Maximal size of possible extension queue 1369. Compared 280051 event pairs, 13411 based on Foata normal form. 6/38445 useless extension candidates. Maximal degree in co-relation 120545. Up to 35020 conditions per place. [2024-06-28 01:42:17,104 INFO L140 encePairwiseOnDemand]: 47/57 looper letters, 97 selfloop transitions, 17 changer transitions 0/124 dead transitions. [2024-06-28 01:42:17,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 124 transitions, 1038 flow [2024-06-28 01:42:17,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:42:17,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:42:17,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2024-06-28 01:42:17,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.512280701754386 [2024-06-28 01:42:17,106 INFO L175 Difference]: Start difference. First operand has 87 places, 99 transitions, 744 flow. Second operand 5 states and 146 transitions. [2024-06-28 01:42:17,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 124 transitions, 1038 flow [2024-06-28 01:42:17,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 124 transitions, 929 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 01:42:17,147 INFO L231 Difference]: Finished difference. Result has 87 places, 99 transitions, 684 flow [2024-06-28 01:42:17,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=684, PETRI_PLACES=87, PETRI_TRANSITIONS=99} [2024-06-28 01:42:17,148 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 22 predicate places. [2024-06-28 01:42:17,148 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 99 transitions, 684 flow [2024-06-28 01:42:17,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:17,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:17,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:17,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:42:17,149 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:42:17,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:17,150 INFO L85 PathProgramCache]: Analyzing trace with hash -393175934, now seen corresponding path program 1 times [2024-06-28 01:42:17,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:17,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881762900] [2024-06-28 01:42:17,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:17,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:17,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:18,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:18,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:18,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881762900] [2024-06-28 01:42:18,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881762900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:18,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:18,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:42:18,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912953817] [2024-06-28 01:42:18,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:18,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:42:18,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:18,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:42:18,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:42:18,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-28 01:42:18,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 99 transitions, 684 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:18,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:18,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-28 01:42:18,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:22,326 INFO L124 PetriNetUnfolderBase]: 26492/38696 cut-off events. [2024-06-28 01:42:22,326 INFO L125 PetriNetUnfolderBase]: For 94434/94434 co-relation queries the response was YES. [2024-06-28 01:42:22,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120126 conditions, 38696 events. 26492/38696 cut-off events. For 94434/94434 co-relation queries the response was YES. Maximal size of possible extension queue 1319. Compared 261949 event pairs, 11896 based on Foata normal form. 12/37610 useless extension candidates. Maximal degree in co-relation 120095. Up to 34833 conditions per place. [2024-06-28 01:42:22,615 INFO L140 encePairwiseOnDemand]: 43/57 looper letters, 108 selfloop transitions, 27 changer transitions 0/145 dead transitions. [2024-06-28 01:42:22,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 145 transitions, 1146 flow [2024-06-28 01:42:22,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:42:22,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:42:22,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2024-06-28 01:42:22,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5409356725146199 [2024-06-28 01:42:22,616 INFO L175 Difference]: Start difference. First operand has 87 places, 99 transitions, 684 flow. Second operand 6 states and 185 transitions. [2024-06-28 01:42:22,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 145 transitions, 1146 flow [2024-06-28 01:42:22,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 145 transitions, 1095 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 01:42:22,660 INFO L231 Difference]: Finished difference. Result has 89 places, 103 transitions, 746 flow [2024-06-28 01:42:22,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=746, PETRI_PLACES=89, PETRI_TRANSITIONS=103} [2024-06-28 01:42:22,661 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 24 predicate places. [2024-06-28 01:42:22,661 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 103 transitions, 746 flow [2024-06-28 01:42:22,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:22,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:22,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:22,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:42:22,662 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:42:22,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:22,663 INFO L85 PathProgramCache]: Analyzing trace with hash 673395496, now seen corresponding path program 2 times [2024-06-28 01:42:22,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:22,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958944622] [2024-06-28 01:42:22,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:22,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:22,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:23,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:23,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:23,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958944622] [2024-06-28 01:42:23,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958944622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:23,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:23,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:42:23,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315894190] [2024-06-28 01:42:23,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:23,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:42:23,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:23,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:42:23,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:42:23,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-28 01:42:23,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 103 transitions, 746 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:23,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:23,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-28 01:42:23,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:27,964 INFO L124 PetriNetUnfolderBase]: 26447/39551 cut-off events. [2024-06-28 01:42:27,964 INFO L125 PetriNetUnfolderBase]: For 103518/103518 co-relation queries the response was YES. [2024-06-28 01:42:28,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122331 conditions, 39551 events. 26447/39551 cut-off events. For 103518/103518 co-relation queries the response was YES. Maximal size of possible extension queue 1369. Compared 280021 event pairs, 13390 based on Foata normal form. 6/38457 useless extension candidates. Maximal degree in co-relation 122300. Up to 35015 conditions per place. [2024-06-28 01:42:28,263 INFO L140 encePairwiseOnDemand]: 44/57 looper letters, 110 selfloop transitions, 16 changer transitions 0/136 dead transitions. [2024-06-28 01:42:28,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 136 transitions, 1084 flow [2024-06-28 01:42:28,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:42:28,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:42:28,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 173 transitions. [2024-06-28 01:42:28,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5058479532163743 [2024-06-28 01:42:28,265 INFO L175 Difference]: Start difference. First operand has 89 places, 103 transitions, 746 flow. Second operand 6 states and 173 transitions. [2024-06-28 01:42:28,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 136 transitions, 1084 flow [2024-06-28 01:42:28,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 136 transitions, 1037 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 01:42:28,329 INFO L231 Difference]: Finished difference. Result has 92 places, 103 transitions, 742 flow [2024-06-28 01:42:28,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=742, PETRI_PLACES=92, PETRI_TRANSITIONS=103} [2024-06-28 01:42:28,330 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 27 predicate places. [2024-06-28 01:42:28,330 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 103 transitions, 742 flow [2024-06-28 01:42:28,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:28,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:28,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:28,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:42:28,331 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:42:28,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:28,332 INFO L85 PathProgramCache]: Analyzing trace with hash 902455834, now seen corresponding path program 1 times [2024-06-28 01:42:28,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:28,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81079091] [2024-06-28 01:42:28,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:28,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:28,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:30,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:30,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:30,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81079091] [2024-06-28 01:42:30,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81079091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:30,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:30,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:42:30,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540739936] [2024-06-28 01:42:30,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:30,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:42:30,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:30,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:42:30,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:42:30,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 57 [2024-06-28 01:42:30,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 103 transitions, 742 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:30,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:30,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 57 [2024-06-28 01:42:30,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand