./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix026.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix026.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb4cb34f 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/mix026.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix026.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-eb4cb34-m [2024-06-21 18:44:35,831 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 18:44:35,907 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 18:44:35,913 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 18:44:35,913 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 18:44:35,942 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 18:44:35,943 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 18:44:35,943 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 18:44:35,944 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 18:44:35,947 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 18:44:35,947 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 18:44:35,947 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 18:44:35,948 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 18:44:35,949 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 18:44:35,949 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 18:44:35,949 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 18:44:35,949 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 18:44:35,949 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 18:44:35,950 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 18:44:35,950 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 18:44:35,950 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 18:44:35,950 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 18:44:35,951 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 18:44:35,951 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 18:44:35,951 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 18:44:35,951 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 18:44:35,952 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 18:44:35,952 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 18:44:35,952 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 18:44:35,952 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 18:44:35,953 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 18:44:35,954 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 18:44:35,954 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 18:44:35,955 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 18:44:35,955 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 18:44:35,955 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 18:44:35,955 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 18:44:35,955 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 18:44:35,956 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 18:44:35,956 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 18:44:35,956 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 18:44:35,956 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 18:44:35,956 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 18:44:35,957 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 18:44:36,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 18:44:36,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 18:44:36,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 18:44:36,200 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 18:44:36,201 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 18:44:36,202 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix026.oepc.yml/witness.yml [2024-06-21 18:44:36,279 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 18:44:36,280 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 18:44:36,280 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix026.oepc.i [2024-06-21 18:44:37,364 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 18:44:37,611 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 18:44:37,612 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix026.oepc.i [2024-06-21 18:44:37,629 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1af32649/ec00425acca4471bb1c9386b183618cb/FLAG11621f2f5 [2024-06-21 18:44:37,638 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1af32649/ec00425acca4471bb1c9386b183618cb [2024-06-21 18:44:37,639 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 18:44:37,640 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 18:44:37,640 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 18:44:37,641 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 18:44:37,646 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 18:44:37,647 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 06:44:36" (1/2) ... [2024-06-21 18:44:37,647 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4abf3d44 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:44:37, skipping insertion in model container [2024-06-21 18:44:37,647 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 06:44:36" (1/2) ... [2024-06-21 18:44:37,648 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@61c0581a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:44:37, skipping insertion in model container [2024-06-21 18:44:37,649 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 06:44:37" (2/2) ... [2024-06-21 18:44:37,649 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4abf3d44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:44:37, skipping insertion in model container [2024-06-21 18:44:37,649 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 06:44:37" (2/2) ... [2024-06-21 18:44:37,649 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 18:44:37,677 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 18:44:37,679 INFO L97 edCorrectnessWitness]: Location invariant before [L873-L873] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a$mem_tmp >= 0LL) && (0LL - (long long )a$flush_delayed) + (long long )a$r_buff0_thd1 >= 0LL) && (0LL - (long long )a$flush_delayed) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$flush_delayed) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff0_thd0) + (long long )a$r_buff0_thd1 >= 0LL) && (0LL - (long long )a$r_buff0_thd0) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd0) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff0_thd1) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd2) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd2) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff0_thd3) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd3) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff0_thd4) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd4) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff1_thd0) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd0) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff1_thd1) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd1) + (long long )a$w_buff1 >= 0LL) && (0LL - (long long )a$r_buff1_thd2) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd2) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff1_thd3) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd3) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff1_thd4) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd4) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$read_delayed) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$read_delayed) + (long long )a$w_buff0_used >= 0LL) && (1LL - (long long )a$r_buff0_thd1) + (long long )a$w_buff0_used >= 0LL) && (1LL - (long long )a$r_buff1_thd1) + (long long )a$w_buff0_used >= 0LL) && (1LL - (long long )a$w_buff0) + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p3_EBX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p3_EBX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p3_EBX + (long long )a$w_buff0_used >= 0LL) && (long long )a + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a + (long long )a$w_buff0 >= 0LL) && (long long )a + (long long )a$w_buff0_used >= 0LL) && (long long )a$flush_delayed + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a$flush_delayed + (long long )a$w_buff0 >= 0LL) && (long long )a$flush_delayed + (long long )a$w_buff0_used >= 0LL) && (long long )a$mem_tmp + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a$mem_tmp + (long long )a$w_buff0 >= 0LL) && (long long )a$mem_tmp + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd0 + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a$r_buff0_thd0 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd0 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff0_thd2 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff0_thd3 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff0_thd4 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd0 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd1 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd2 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd3 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd4 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$read_delayed >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff1 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff1_used >= 0LL) && (long long )a$r_buff0_thd1 + (long long )main$tmp_guard1 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )x >= 0LL) && (long long )a$r_buff0_thd1 + (long long )y >= 0LL) && (long long )a$r_buff0_thd1 + (long long )z >= 0LL) && (long long )a$r_buff0_thd1 + (long long )weak$$choice0 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )weak$$choice2 >= 0LL) && (long long )a$r_buff0_thd2 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd2 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd3 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd3 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd4 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd4 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd0 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd0 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd1 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd1 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd2 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd2 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd3 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd3 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd4 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd4 + (long long )a$w_buff0_used >= 0LL) && (long long )a$read_delayed + (long long )a$w_buff0 >= 0LL) && (long long )a$read_delayed + (long long )a$w_buff0_used >= 0LL) && (long long )a$w_buff0 + (long long )a$w_buff0_used >= 0LL) && (long long )a$w_buff0 + (long long )a$w_buff1 >= 0LL) && (long long )a$w_buff0 + (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0 + (long long )main$tmp_guard1 >= 0LL) && (long long )a$w_buff0 + (long long )x >= 0LL) && (long long )a$w_buff0 + (long long )y >= 0LL) && (long long )a$w_buff0 + (long long )z >= 0LL) && (long long )a$w_buff0 + (long long )weak$$choice0 >= 0LL) && (long long )a$w_buff0 + (long long )weak$$choice2 >= 0LL) && (long long )a$w_buff0_used + (long long )a$w_buff1 >= 0LL) && (long long )a$w_buff0_used + (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0_used + (long long )main$tmp_guard1 >= 0LL) && (long long )a$w_buff0_used + (long long )x >= 0LL) && (long long )a$w_buff0_used + (long long )y >= 0LL) && (long long )a$w_buff0_used + (long long )z >= 0LL) && (long long )a$w_buff0_used + (long long )weak$$choice0 >= 0LL) && (long long )a$w_buff0_used + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )a$w_buff0_used) - (long long )a$w_buff1 >= 0LL) && (long long )__unbuffered_p3_EBX - (long long )a$mem_tmp >= 0LL) && (long long )a - (long long )a$mem_tmp >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff0_thd2 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff0_thd3 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff0_thd4 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd0 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd1 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd2 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd3 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd4 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$read_delayed >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff1 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff1_used >= 0LL) && (long long )a$r_buff1_thd1 - (long long )a$w_buff1 >= 0LL) && (long long )a$r_buff1_thd1 - (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0 - (long long )a$w_buff0_used >= 0LL) && (long long )a$w_buff0 - (long long )a$w_buff1 >= 0LL) && (long long )a$w_buff0 - (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0_used - (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff1 - (long long )a$w_buff1_used >= 0LL) [2024-06-21 18:44:37,679 INFO L97 edCorrectnessWitness]: Location invariant before [L874-L874] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a$mem_tmp >= 0LL) && (0LL - (long long )a$flush_delayed) + (long long )a$r_buff0_thd1 >= 0LL) && (0LL - (long long )a$flush_delayed) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$flush_delayed) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff0_thd0) + (long long )a$r_buff0_thd1 >= 0LL) && (0LL - (long long )a$r_buff0_thd0) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd0) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff0_thd1) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd2) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd2) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff0_thd3) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd3) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff0_thd4) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd4) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff1_thd0) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd0) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff1_thd1) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd1) + (long long )a$w_buff1 >= 0LL) && (0LL - (long long )a$r_buff1_thd2) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd2) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff1_thd3) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd3) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff1_thd4) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd4) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$read_delayed) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$read_delayed) + (long long )a$w_buff0_used >= 0LL) && (1LL - (long long )a$r_buff0_thd1) + (long long )a$w_buff0_used >= 0LL) && (1LL - (long long )a$r_buff1_thd1) + (long long )a$w_buff0_used >= 0LL) && (1LL - (long long )a$w_buff0) + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p3_EBX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p3_EBX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p3_EBX + (long long )a$w_buff0_used >= 0LL) && (long long )a + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a + (long long )a$w_buff0 >= 0LL) && (long long )a + (long long )a$w_buff0_used >= 0LL) && (long long )a$flush_delayed + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a$flush_delayed + (long long )a$w_buff0 >= 0LL) && (long long )a$flush_delayed + (long long )a$w_buff0_used >= 0LL) && (long long )a$mem_tmp + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a$mem_tmp + (long long )a$w_buff0 >= 0LL) && (long long )a$mem_tmp + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd0 + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a$r_buff0_thd0 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd0 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff0_thd2 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff0_thd3 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff0_thd4 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd0 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd1 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd2 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd3 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd4 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$read_delayed >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff1 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff1_used >= 0LL) && (long long )a$r_buff0_thd1 + (long long )main$tmp_guard1 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )x >= 0LL) && (long long )a$r_buff0_thd1 + (long long )y >= 0LL) && (long long )a$r_buff0_thd1 + (long long )z >= 0LL) && (long long )a$r_buff0_thd1 + (long long )weak$$choice0 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )weak$$choice2 >= 0LL) && (long long )a$r_buff0_thd2 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd2 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd3 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd3 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd4 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd4 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd0 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd0 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd1 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd1 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd2 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd2 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd3 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd3 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd4 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd4 + (long long )a$w_buff0_used >= 0LL) && (long long )a$read_delayed + (long long )a$w_buff0 >= 0LL) && (long long )a$read_delayed + (long long )a$w_buff0_used >= 0LL) && (long long )a$w_buff0 + (long long )a$w_buff0_used >= 0LL) && (long long )a$w_buff0 + (long long )a$w_buff1 >= 0LL) && (long long )a$w_buff0 + (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0 + (long long )main$tmp_guard1 >= 0LL) && (long long )a$w_buff0 + (long long )x >= 0LL) && (long long )a$w_buff0 + (long long )y >= 0LL) && (long long )a$w_buff0 + (long long )z >= 0LL) && (long long )a$w_buff0 + (long long )weak$$choice0 >= 0LL) && (long long )a$w_buff0 + (long long )weak$$choice2 >= 0LL) && (long long )a$w_buff0_used + (long long )a$w_buff1 >= 0LL) && (long long )a$w_buff0_used + (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0_used + (long long )main$tmp_guard1 >= 0LL) && (long long )a$w_buff0_used + (long long )x >= 0LL) && (long long )a$w_buff0_used + (long long )y >= 0LL) && (long long )a$w_buff0_used + (long long )z >= 0LL) && (long long )a$w_buff0_used + (long long )weak$$choice0 >= 0LL) && (long long )a$w_buff0_used + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )a$w_buff0_used) - (long long )a$w_buff1 >= 0LL) && (long long )__unbuffered_p3_EBX - (long long )a$mem_tmp >= 0LL) && (long long )a - (long long )a$mem_tmp >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff0_thd2 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff0_thd3 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff0_thd4 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd0 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd1 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd2 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd3 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd4 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$read_delayed >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff1 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff1_used >= 0LL) && (long long )a$r_buff1_thd1 - (long long )a$w_buff1 >= 0LL) && (long long )a$r_buff1_thd1 - (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0 - (long long )a$w_buff0_used >= 0LL) && (long long )a$w_buff0 - (long long )a$w_buff1 >= 0LL) && (long long )a$w_buff0 - (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0_used - (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff1 - (long long )a$w_buff1_used >= 0LL) [2024-06-21 18:44:37,679 INFO L97 edCorrectnessWitness]: Location invariant before [L869-L869] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a$mem_tmp >= 0LL) && (0LL - (long long )a$flush_delayed) + (long long )a$r_buff0_thd1 >= 0LL) && (0LL - (long long )a$flush_delayed) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$flush_delayed) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff0_thd0) + (long long )a$r_buff0_thd1 >= 0LL) && (0LL - (long long )a$r_buff0_thd0) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd0) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff0_thd1) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd2) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd2) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff0_thd3) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd3) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff0_thd4) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd4) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff1_thd0) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd0) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff1_thd1) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd1) + (long long )a$w_buff1 >= 0LL) && (0LL - (long long )a$r_buff1_thd2) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd2) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff1_thd3) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd3) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff1_thd4) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd4) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$read_delayed) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$read_delayed) + (long long )a$w_buff0_used >= 0LL) && (1LL - (long long )a$r_buff0_thd1) + (long long )a$w_buff0_used >= 0LL) && (1LL - (long long )a$r_buff1_thd1) + (long long )a$w_buff0_used >= 0LL) && (1LL - (long long )a$w_buff0) + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p3_EBX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p3_EBX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p3_EBX + (long long )a$w_buff0_used >= 0LL) && (long long )a + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a + (long long )a$w_buff0 >= 0LL) && (long long )a + (long long )a$w_buff0_used >= 0LL) && (long long )a$flush_delayed + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a$flush_delayed + (long long )a$w_buff0 >= 0LL) && (long long )a$flush_delayed + (long long )a$w_buff0_used >= 0LL) && (long long )a$mem_tmp + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a$mem_tmp + (long long )a$w_buff0 >= 0LL) && (long long )a$mem_tmp + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd0 + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a$r_buff0_thd0 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd0 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff0_thd2 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff0_thd3 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff0_thd4 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd0 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd1 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd2 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd3 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd4 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$read_delayed >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff1 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff1_used >= 0LL) && (long long )a$r_buff0_thd1 + (long long )main$tmp_guard1 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )x >= 0LL) && (long long )a$r_buff0_thd1 + (long long )y >= 0LL) && (long long )a$r_buff0_thd1 + (long long )z >= 0LL) && (long long )a$r_buff0_thd1 + (long long )weak$$choice0 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )weak$$choice2 >= 0LL) && (long long )a$r_buff0_thd2 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd2 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd3 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd3 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd4 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd4 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd0 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd0 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd1 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd1 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd2 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd2 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd3 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd3 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd4 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd4 + (long long )a$w_buff0_used >= 0LL) && (long long )a$read_delayed + (long long )a$w_buff0 >= 0LL) && (long long )a$read_delayed + (long long )a$w_buff0_used >= 0LL) && (long long )a$w_buff0 + (long long )a$w_buff0_used >= 0LL) && (long long )a$w_buff0 + (long long )a$w_buff1 >= 0LL) && (long long )a$w_buff0 + (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0 + (long long )main$tmp_guard1 >= 0LL) && (long long )a$w_buff0 + (long long )x >= 0LL) && (long long )a$w_buff0 + (long long )y >= 0LL) && (long long )a$w_buff0 + (long long )z >= 0LL) && (long long )a$w_buff0 + (long long )weak$$choice0 >= 0LL) && (long long )a$w_buff0 + (long long )weak$$choice2 >= 0LL) && (long long )a$w_buff0_used + (long long )a$w_buff1 >= 0LL) && (long long )a$w_buff0_used + (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0_used + (long long )main$tmp_guard1 >= 0LL) && (long long )a$w_buff0_used + (long long )x >= 0LL) && (long long )a$w_buff0_used + (long long )y >= 0LL) && (long long )a$w_buff0_used + (long long )z >= 0LL) && (long long )a$w_buff0_used + (long long )weak$$choice0 >= 0LL) && (long long )a$w_buff0_used + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )a$w_buff0_used) - (long long )a$w_buff1 >= 0LL) && (long long )__unbuffered_p3_EBX - (long long )a$mem_tmp >= 0LL) && (long long )a - (long long )a$mem_tmp >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff0_thd2 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff0_thd3 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff0_thd4 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd0 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd1 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd2 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd3 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd4 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$read_delayed >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff1 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff1_used >= 0LL) && (long long )a$r_buff1_thd1 - (long long )a$w_buff1 >= 0LL) && (long long )a$r_buff1_thd1 - (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0 - (long long )a$w_buff0_used >= 0LL) && (long long )a$w_buff0 - (long long )a$w_buff1 >= 0LL) && (long long )a$w_buff0 - (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0_used - (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff1 - (long long )a$w_buff1_used >= 0LL) [2024-06-21 18:44:37,679 INFO L97 edCorrectnessWitness]: Location invariant before [L871-L871] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a$mem_tmp >= 0LL) && (0LL - (long long )a$flush_delayed) + (long long )a$r_buff0_thd1 >= 0LL) && (0LL - (long long )a$flush_delayed) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$flush_delayed) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff0_thd0) + (long long )a$r_buff0_thd1 >= 0LL) && (0LL - (long long )a$r_buff0_thd0) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd0) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff0_thd1) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd2) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd2) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff0_thd3) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd3) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff0_thd4) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd4) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff1_thd0) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd0) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff1_thd1) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd1) + (long long )a$w_buff1 >= 0LL) && (0LL - (long long )a$r_buff1_thd2) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd2) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff1_thd3) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd3) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff1_thd4) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd4) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$read_delayed) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$read_delayed) + (long long )a$w_buff0_used >= 0LL) && (1LL - (long long )a$r_buff0_thd1) + (long long )a$w_buff0_used >= 0LL) && (1LL - (long long )a$r_buff1_thd1) + (long long )a$w_buff0_used >= 0LL) && (1LL - (long long )a$w_buff0) + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p3_EAX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p3_EBX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p3_EBX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p3_EBX + (long long )a$w_buff0_used >= 0LL) && (long long )a + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a + (long long )a$w_buff0 >= 0LL) && (long long )a + (long long )a$w_buff0_used >= 0LL) && (long long )a$flush_delayed + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a$flush_delayed + (long long )a$w_buff0 >= 0LL) && (long long )a$flush_delayed + (long long )a$w_buff0_used >= 0LL) && (long long )a$mem_tmp + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a$mem_tmp + (long long )a$w_buff0 >= 0LL) && (long long )a$mem_tmp + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd0 + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a$r_buff0_thd0 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd0 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff0_thd2 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff0_thd3 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff0_thd4 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd0 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd1 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd2 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd3 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd4 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$read_delayed >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff1 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff1_used >= 0LL) && (long long )a$r_buff0_thd1 + (long long )main$tmp_guard1 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )x >= 0LL) && (long long )a$r_buff0_thd1 + (long long )y >= 0LL) && (long long )a$r_buff0_thd1 + (long long )z >= 0LL) && (long long )a$r_buff0_thd1 + (long long )weak$$choice0 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )weak$$choice2 >= 0LL) && (long long )a$r_buff0_thd2 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd2 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd3 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd3 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd4 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd4 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd0 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd0 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd1 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd1 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd2 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd2 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd3 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd3 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd4 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd4 + (long long )a$w_buff0_used >= 0LL) && (long long )a$read_delayed + (long long )a$w_buff0 >= 0LL) && (long long )a$read_delayed + (long long )a$w_buff0_used >= 0LL) && (long long )a$w_buff0 + (long long )a$w_buff0_used >= 0LL) && (long long )a$w_buff0 + (long long )a$w_buff1 >= 0LL) && (long long )a$w_buff0 + (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0 + (long long )main$tmp_guard1 >= 0LL) && (long long )a$w_buff0 + (long long )x >= 0LL) && (long long )a$w_buff0 + (long long )y >= 0LL) && (long long )a$w_buff0 + (long long )z >= 0LL) && (long long )a$w_buff0 + (long long )weak$$choice0 >= 0LL) && (long long )a$w_buff0 + (long long )weak$$choice2 >= 0LL) && (long long )a$w_buff0_used + (long long )a$w_buff1 >= 0LL) && (long long )a$w_buff0_used + (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0_used + (long long )main$tmp_guard1 >= 0LL) && (long long )a$w_buff0_used + (long long )x >= 0LL) && (long long )a$w_buff0_used + (long long )y >= 0LL) && (long long )a$w_buff0_used + (long long )z >= 0LL) && (long long )a$w_buff0_used + (long long )weak$$choice0 >= 0LL) && (long long )a$w_buff0_used + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )a$w_buff0_used) - (long long )a$w_buff1 >= 0LL) && (long long )__unbuffered_p3_EBX - (long long )a$mem_tmp >= 0LL) && (long long )a - (long long )a$mem_tmp >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff0_thd2 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff0_thd3 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff0_thd4 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd0 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd1 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd2 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd3 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd4 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$read_delayed >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff1 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff1_used >= 0LL) && (long long )a$r_buff1_thd1 - (long long )a$w_buff1 >= 0LL) && (long long )a$r_buff1_thd1 - (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0 - (long long )a$w_buff0_used >= 0LL) && (long long )a$w_buff0 - (long long )a$w_buff1 >= 0LL) && (long long )a$w_buff0 - (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0_used - (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff1 - (long long )a$w_buff1_used >= 0LL) [2024-06-21 18:44:37,680 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 18:44:37,680 INFO L106 edCorrectnessWitness]: ghost_update [L867-L867] multithreaded = 1; [2024-06-21 18:44:37,719 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 18:44:38,009 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 18:44:38,018 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-21 18:44:38,239 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 18:44:38,278 INFO L206 MainTranslator]: Completed translation [2024-06-21 18:44:38,279 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:44:38 WrapperNode [2024-06-21 18:44:38,279 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 18:44:38,279 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 18:44:38,280 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 18:44:38,280 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 18:44:38,285 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:44:38" (1/1) ... [2024-06-21 18:44:38,304 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:44:38" (1/1) ... [2024-06-21 18:44:38,358 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 139 [2024-06-21 18:44:38,358 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 18:44:38,359 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 18:44:38,359 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 18:44:38,360 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 18:44:38,368 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:44:38" (1/1) ... [2024-06-21 18:44:38,368 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:44:38" (1/1) ... [2024-06-21 18:44:38,388 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:44:38" (1/1) ... [2024-06-21 18:44:38,416 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]. [2024-06-21 18:44:38,417 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:44:38" (1/1) ... [2024-06-21 18:44:38,417 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:44:38" (1/1) ... [2024-06-21 18:44:38,446 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:44:38" (1/1) ... [2024-06-21 18:44:38,455 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:44:38" (1/1) ... [2024-06-21 18:44:38,460 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:44:38" (1/1) ... [2024-06-21 18:44:38,464 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:44:38" (1/1) ... [2024-06-21 18:44:38,478 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 18:44:38,479 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 18:44:38,479 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 18:44:38,479 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 18:44:38,480 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:44:38" (1/1) ... [2024-06-21 18:44:38,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 18:44:38,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 18:44:38,517 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) [2024-06-21 18:44:38,542 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 [2024-06-21 18:44:38,556 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 18:44:38,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 18:44:38,556 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-21 18:44:38,557 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-21 18:44:38,557 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-21 18:44:38,557 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-21 18:44:38,557 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-21 18:44:38,557 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-21 18:44:38,558 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-21 18:44:38,558 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-21 18:44:38,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 18:44:38,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 18:44:38,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 18:44:38,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 18:44:38,560 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-21 18:44:38,685 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 18:44:38,687 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 18:44:39,345 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 18:44:39,346 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 18:44:39,519 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 18:44:39,519 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-21 18:44:39,520 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 06:44:39 BoogieIcfgContainer [2024-06-21 18:44:39,520 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 18:44:39,522 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 18:44:39,522 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 18:44:39,524 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 18:44:39,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 06:44:36" (1/4) ... [2024-06-21 18:44:39,525 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d4ee5d2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 06:44:39, skipping insertion in model container [2024-06-21 18:44:39,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 06:44:37" (2/4) ... [2024-06-21 18:44:39,526 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d4ee5d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 06:44:39, skipping insertion in model container [2024-06-21 18:44:39,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:44:38" (3/4) ... [2024-06-21 18:44:39,527 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d4ee5d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 06:44:39, skipping insertion in model container [2024-06-21 18:44:39,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 06:44:39" (4/4) ... [2024-06-21 18:44:39,528 INFO L112 eAbstractionObserver]: Analyzing ICFG mix026.oepc.i [2024-06-21 18:44:39,540 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 18:44:39,540 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-21 18:44:39,540 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 18:44:39,594 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-21 18:44:39,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 52 transitions, 120 flow [2024-06-21 18:44:39,662 INFO L124 PetriNetUnfolderBase]: 0/48 cut-off events. [2024-06-21 18:44:39,662 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 18:44:39,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 0/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 83 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-21 18:44:39,664 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 52 transitions, 120 flow [2024-06-21 18:44:39,668 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 42 transitions, 96 flow [2024-06-21 18:44:39,679 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 18:44:39,685 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;@7da8cbc7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 18:44:39,685 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-21 18:44:39,689 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 18:44:39,689 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-21 18:44:39,689 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 18:44:39,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:44:39,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 18:44:39,697 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:44:39,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:44:39,704 INFO L85 PathProgramCache]: Analyzing trace with hash 402353374, now seen corresponding path program 1 times [2024-06-21 18:44:39,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:44:39,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969030984] [2024-06-21 18:44:39,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:44:39,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:44:39,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:44:41,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:44:41,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:44:41,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969030984] [2024-06-21 18:44:41,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969030984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:44:41,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:44:41,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 18:44:41,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534430528] [2024-06-21 18:44:41,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:44:41,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 18:44:41,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:44:41,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 18:44:41,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 18:44:41,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 52 [2024-06-21 18:44:41,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-06-21 18:44:41,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:44:41,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 52 [2024-06-21 18:44:41,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:44:43,234 INFO L124 PetriNetUnfolderBase]: 9547/13262 cut-off events. [2024-06-21 18:44:43,234 INFO L125 PetriNetUnfolderBase]: For 178/178 co-relation queries the response was YES. [2024-06-21 18:44:43,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26594 conditions, 13262 events. 9547/13262 cut-off events. For 178/178 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 71959 event pairs, 7308 based on Foata normal form. 1/13034 useless extension candidates. Maximal degree in co-relation 26581. Up to 12953 conditions per place. [2024-06-21 18:44:43,313 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 43 selfloop transitions, 5 changer transitions 0/56 dead transitions. [2024-06-21 18:44:43,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 56 transitions, 229 flow [2024-06-21 18:44:43,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 18:44:43,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 18:44:43,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2024-06-21 18:44:43,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6217948717948718 [2024-06-21 18:44:43,325 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 96 flow. Second operand 3 states and 97 transitions. [2024-06-21 18:44:43,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 56 transitions, 229 flow [2024-06-21 18:44:43,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 56 transitions, 222 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-21 18:44:43,334 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 131 flow [2024-06-21 18:44:43,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-06-21 18:44:43,339 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -1 predicate places. [2024-06-21 18:44:43,339 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 131 flow [2024-06-21 18:44:43,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-06-21 18:44:43,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:44:43,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:44:43,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 18:44:43,340 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:44:43,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:44:43,341 INFO L85 PathProgramCache]: Analyzing trace with hash 114558717, now seen corresponding path program 1 times [2024-06-21 18:44:43,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:44:43,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747997201] [2024-06-21 18:44:43,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:44:43,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:44:43,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:44:44,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:44:44,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:44:44,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747997201] [2024-06-21 18:44:44,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747997201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:44:44,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:44:44,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 18:44:44,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170737075] [2024-06-21 18:44:44,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:44:44,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 18:44:44,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:44:44,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 18:44:44,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-21 18:44:44,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 52 [2024-06-21 18:44:44,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2024-06-21 18:44:44,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:44:44,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 52 [2024-06-21 18:44:44,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:44:46,282 INFO L124 PetriNetUnfolderBase]: 9537/13259 cut-off events. [2024-06-21 18:44:46,282 INFO L125 PetriNetUnfolderBase]: For 2494/2494 co-relation queries the response was YES. [2024-06-21 18:44:46,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30022 conditions, 13259 events. 9537/13259 cut-off events. For 2494/2494 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 72018 event pairs, 6489 based on Foata normal form. 4/13211 useless extension candidates. Maximal degree in co-relation 30010. Up to 12918 conditions per place. [2024-06-21 18:44:46,352 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 53 selfloop transitions, 9 changer transitions 0/70 dead transitions. [2024-06-21 18:44:46,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 70 transitions, 321 flow [2024-06-21 18:44:46,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 18:44:46,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 18:44:46,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2024-06-21 18:44:46,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6057692307692307 [2024-06-21 18:44:46,356 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 131 flow. Second operand 4 states and 126 transitions. [2024-06-21 18:44:46,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 70 transitions, 321 flow [2024-06-21 18:44:46,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 70 transitions, 316 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 18:44:46,361 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 179 flow [2024-06-21 18:44:46,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2024-06-21 18:44:46,362 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2024-06-21 18:44:46,362 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 179 flow [2024-06-21 18:44:46,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2024-06-21 18:44:46,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:44:46,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:44:46,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 18:44:46,365 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:44:46,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:44:46,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1578197732, now seen corresponding path program 1 times [2024-06-21 18:44:46,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:44:46,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024316381] [2024-06-21 18:44:46,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:44:46,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:44:46,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:44:47,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:44:47,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:44:47,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024316381] [2024-06-21 18:44:47,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024316381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:44:47,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:44:47,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:44:47,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84344947] [2024-06-21 18:44:47,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:44:47,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:44:47,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:44:47,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:44:47,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:44:48,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-21 18:44:48,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 179 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:44:48,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:44:48,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-21 18:44:48,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:44:49,932 INFO L124 PetriNetUnfolderBase]: 11565/15993 cut-off events. [2024-06-21 18:44:49,932 INFO L125 PetriNetUnfolderBase]: For 8255/8255 co-relation queries the response was YES. [2024-06-21 18:44:49,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40044 conditions, 15993 events. 11565/15993 cut-off events. For 8255/8255 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 87002 event pairs, 6611 based on Foata normal form. 4/15939 useless extension candidates. Maximal degree in co-relation 40030. Up to 15580 conditions per place. [2024-06-21 18:44:49,996 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 74 selfloop transitions, 17 changer transitions 0/98 dead transitions. [2024-06-21 18:44:49,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 98 transitions, 508 flow [2024-06-21 18:44:49,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 18:44:49,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 18:44:49,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 179 transitions. [2024-06-21 18:44:49,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5737179487179487 [2024-06-21 18:44:49,998 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 179 flow. Second operand 6 states and 179 transitions. [2024-06-21 18:44:49,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 98 transitions, 508 flow [2024-06-21 18:44:50,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 98 transitions, 480 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-21 18:44:50,001 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 256 flow [2024-06-21 18:44:50,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=256, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2024-06-21 18:44:50,002 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2024-06-21 18:44:50,002 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 256 flow [2024-06-21 18:44:50,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:44:50,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:44:50,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:44:50,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 18:44:50,003 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:44:50,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:44:50,004 INFO L85 PathProgramCache]: Analyzing trace with hash 35287234, now seen corresponding path program 1 times [2024-06-21 18:44:50,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:44:50,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938804091] [2024-06-21 18:44:50,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:44:50,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:44:50,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:44:51,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:44:51,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:44:51,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938804091] [2024-06-21 18:44:51,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938804091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:44:51,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:44:51,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:44:51,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103449896] [2024-06-21 18:44:51,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:44:51,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:44:51,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:44:51,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:44:51,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:44:51,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-21 18:44:51,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 256 flow. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:44:51,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:44:51,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-21 18:44:51,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:44:53,736 INFO L124 PetriNetUnfolderBase]: 11549/15951 cut-off events. [2024-06-21 18:44:53,736 INFO L125 PetriNetUnfolderBase]: For 16707/16707 co-relation queries the response was YES. [2024-06-21 18:44:53,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44541 conditions, 15951 events. 11549/15951 cut-off events. For 16707/16707 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 86606 event pairs, 5646 based on Foata normal form. 8/15905 useless extension candidates. Maximal degree in co-relation 44524. Up to 15514 conditions per place. [2024-06-21 18:44:53,811 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 81 selfloop transitions, 21 changer transitions 0/108 dead transitions. [2024-06-21 18:44:53,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 108 transitions, 600 flow [2024-06-21 18:44:53,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:44:53,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:44:53,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-21 18:44:53,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5048076923076923 [2024-06-21 18:44:53,813 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 256 flow. Second operand 8 states and 210 transitions. [2024-06-21 18:44:53,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 108 transitions, 600 flow [2024-06-21 18:44:53,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 108 transitions, 561 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-21 18:44:53,821 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 291 flow [2024-06-21 18:44:53,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=291, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2024-06-21 18:44:53,823 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 11 predicate places. [2024-06-21 18:44:53,823 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 291 flow [2024-06-21 18:44:53,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:44:53,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:44:53,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:44:53,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 18:44:53,824 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:44:53,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:44:53,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1912838536, now seen corresponding path program 1 times [2024-06-21 18:44:53,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:44:53,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158267916] [2024-06-21 18:44:53,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:44:53,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:44:53,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:44:55,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:44:55,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:44:55,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158267916] [2024-06-21 18:44:55,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158267916] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:44:55,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:44:55,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 18:44:55,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032734114] [2024-06-21 18:44:55,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:44:55,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 18:44:55,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:44:55,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 18:44:55,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-21 18:44:55,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-21 18:44:55,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 291 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 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) [2024-06-21 18:44:55,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:44:55,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-21 18:44:55,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:44:57,795 INFO L124 PetriNetUnfolderBase]: 11531/15943 cut-off events. [2024-06-21 18:44:57,795 INFO L125 PetriNetUnfolderBase]: For 26012/26012 co-relation queries the response was YES. [2024-06-21 18:44:57,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47671 conditions, 15943 events. 11531/15943 cut-off events. For 26012/26012 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 86711 event pairs, 6023 based on Foata normal form. 6/15891 useless extension candidates. Maximal degree in co-relation 47652. Up to 15565 conditions per place. [2024-06-21 18:44:57,875 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 65 selfloop transitions, 12 changer transitions 0/83 dead transitions. [2024-06-21 18:44:57,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 83 transitions, 526 flow [2024-06-21 18:44:57,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 18:44:57,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 18:44:57,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-06-21 18:44:57,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4807692307692308 [2024-06-21 18:44:57,877 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 291 flow. Second operand 5 states and 125 transitions. [2024-06-21 18:44:57,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 83 transitions, 526 flow [2024-06-21 18:44:57,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 83 transitions, 468 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-21 18:44:57,883 INFO L231 Difference]: Finished difference. Result has 66 places, 66 transitions, 320 flow [2024-06-21 18:44:57,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=320, PETRI_PLACES=66, PETRI_TRANSITIONS=66} [2024-06-21 18:44:57,884 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 11 predicate places. [2024-06-21 18:44:57,884 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 66 transitions, 320 flow [2024-06-21 18:44:57,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 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) [2024-06-21 18:44:57,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:44:57,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:44:57,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 18:44:57,885 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:44:57,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:44:57,885 INFO L85 PathProgramCache]: Analyzing trace with hash -9828739, now seen corresponding path program 1 times [2024-06-21 18:44:57,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:44:57,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504943581] [2024-06-21 18:44:57,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:44:57,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:44:57,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:44:59,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:44:59,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:44:59,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504943581] [2024-06-21 18:44:59,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504943581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:44:59,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:44:59,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:44:59,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698532519] [2024-06-21 18:44:59,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:44:59,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:44:59,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:44:59,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:44:59,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:44:59,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-21 18:44:59,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 66 transitions, 320 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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) [2024-06-21 18:44:59,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:44:59,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-21 18:44:59,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:45:01,626 INFO L124 PetriNetUnfolderBase]: 13299/17996 cut-off events. [2024-06-21 18:45:01,626 INFO L125 PetriNetUnfolderBase]: For 42536/42536 co-relation queries the response was YES. [2024-06-21 18:45:01,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58320 conditions, 17996 events. 13299/17996 cut-off events. For 42536/42536 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 94223 event pairs, 6860 based on Foata normal form. 3/17995 useless extension candidates. Maximal degree in co-relation 58298. Up to 17866 conditions per place. [2024-06-21 18:45:01,704 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 81 selfloop transitions, 23 changer transitions 0/109 dead transitions. [2024-06-21 18:45:01,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 109 transitions, 743 flow [2024-06-21 18:45:01,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 18:45:01,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 18:45:01,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-21 18:45:01,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2024-06-21 18:45:01,708 INFO L175 Difference]: Start difference. First operand has 66 places, 66 transitions, 320 flow. Second operand 6 states and 148 transitions. [2024-06-21 18:45:01,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 109 transitions, 743 flow [2024-06-21 18:45:01,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 109 transitions, 701 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-06-21 18:45:01,715 INFO L231 Difference]: Finished difference. Result has 72 places, 82 transitions, 492 flow [2024-06-21 18:45:01,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=492, PETRI_PLACES=72, PETRI_TRANSITIONS=82} [2024-06-21 18:45:01,716 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 17 predicate places. [2024-06-21 18:45:01,716 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 82 transitions, 492 flow [2024-06-21 18:45:01,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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) [2024-06-21 18:45:01,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:45:01,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:45:01,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 18:45:01,717 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:45:01,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:45:01,717 INFO L85 PathProgramCache]: Analyzing trace with hash 724082745, now seen corresponding path program 2 times [2024-06-21 18:45:01,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:45:01,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229354152] [2024-06-21 18:45:01,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:45:01,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:45:01,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:45:03,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:45:03,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:45:03,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229354152] [2024-06-21 18:45:03,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229354152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:45:03,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:45:03,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:45:03,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864350157] [2024-06-21 18:45:03,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:45:03,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:45:03,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:45:03,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:45:03,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:45:03,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-21 18:45:03,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 82 transitions, 492 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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) [2024-06-21 18:45:03,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:45:03,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-21 18:45:03,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:45:05,235 INFO L124 PetriNetUnfolderBase]: 13290/17989 cut-off events. [2024-06-21 18:45:05,235 INFO L125 PetriNetUnfolderBase]: For 57343/57343 co-relation queries the response was YES. [2024-06-21 18:45:05,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62765 conditions, 17989 events. 13290/17989 cut-off events. For 57343/57343 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 94052 event pairs, 6853 based on Foata normal form. 3/17989 useless extension candidates. Maximal degree in co-relation 62738. Up to 17889 conditions per place. [2024-06-21 18:45:05,331 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 84 selfloop transitions, 16 changer transitions 0/105 dead transitions. [2024-06-21 18:45:05,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 105 transitions, 752 flow [2024-06-21 18:45:05,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 18:45:05,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 18:45:05,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-21 18:45:05,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4551282051282051 [2024-06-21 18:45:05,333 INFO L175 Difference]: Start difference. First operand has 72 places, 82 transitions, 492 flow. Second operand 6 states and 142 transitions. [2024-06-21 18:45:05,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 105 transitions, 752 flow [2024-06-21 18:45:05,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 105 transitions, 711 flow, removed 19 selfloop flow, removed 1 redundant places. [2024-06-21 18:45:05,354 INFO L231 Difference]: Finished difference. Result has 77 places, 82 transitions, 494 flow [2024-06-21 18:45:05,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=494, PETRI_PLACES=77, PETRI_TRANSITIONS=82} [2024-06-21 18:45:05,356 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 22 predicate places. [2024-06-21 18:45:05,356 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 82 transitions, 494 flow [2024-06-21 18:45:05,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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) [2024-06-21 18:45:05,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:45:05,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:45:05,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 18:45:05,357 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:45:05,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:45:05,357 INFO L85 PathProgramCache]: Analyzing trace with hash 627418523, now seen corresponding path program 3 times [2024-06-21 18:45:05,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:45:05,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263415262] [2024-06-21 18:45:05,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:45:05,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:45:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:45:07,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:45:07,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:45:07,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263415262] [2024-06-21 18:45:07,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263415262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:45:07,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:45:07,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:45:07,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518814511] [2024-06-21 18:45:07,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:45:07,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:45:07,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:45:07,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:45:07,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:45:07,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-21 18:45:07,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 82 transitions, 494 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 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) [2024-06-21 18:45:07,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:45:07,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-21 18:45:07,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:45:09,389 INFO L124 PetriNetUnfolderBase]: 11661/16137 cut-off events. [2024-06-21 18:45:09,389 INFO L125 PetriNetUnfolderBase]: For 57868/57868 co-relation queries the response was YES. [2024-06-21 18:45:09,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57460 conditions, 16137 events. 11661/16137 cut-off events. For 57868/57868 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 87461 event pairs, 5884 based on Foata normal form. 3/16081 useless extension candidates. Maximal degree in co-relation 57430. Up to 15656 conditions per place. [2024-06-21 18:45:09,492 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 82 selfloop transitions, 49 changer transitions 0/137 dead transitions. [2024-06-21 18:45:09,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 137 transitions, 1004 flow [2024-06-21 18:45:09,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:45:09,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:45:09,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-21 18:45:09,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4835164835164835 [2024-06-21 18:45:09,494 INFO L175 Difference]: Start difference. First operand has 77 places, 82 transitions, 494 flow. Second operand 7 states and 176 transitions. [2024-06-21 18:45:09,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 137 transitions, 1004 flow [2024-06-21 18:45:09,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 137 transitions, 958 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-21 18:45:09,524 INFO L231 Difference]: Finished difference. Result has 82 places, 106 transitions, 779 flow [2024-06-21 18:45:09,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=779, PETRI_PLACES=82, PETRI_TRANSITIONS=106} [2024-06-21 18:45:09,526 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 27 predicate places. [2024-06-21 18:45:09,526 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 106 transitions, 779 flow [2024-06-21 18:45:09,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 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) [2024-06-21 18:45:09,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:45:09,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:45:09,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 18:45:09,527 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:45:09,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:45:09,527 INFO L85 PathProgramCache]: Analyzing trace with hash 244949663, now seen corresponding path program 1 times [2024-06-21 18:45:09,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:45:09,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583402253] [2024-06-21 18:45:09,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:45:09,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:45:09,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:45:11,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:45:11,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:45:11,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583402253] [2024-06-21 18:45:11,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583402253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:45:11,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:45:11,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:45:11,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682083479] [2024-06-21 18:45:11,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:45:11,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:45:11,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:45:11,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:45:11,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:45:11,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-21 18:45:11,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 106 transitions, 779 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:45:11,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:45:11,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-21 18:45:11,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:45:13,331 INFO L124 PetriNetUnfolderBase]: 11706/16196 cut-off events. [2024-06-21 18:45:13,331 INFO L125 PetriNetUnfolderBase]: For 75049/75049 co-relation queries the response was YES. [2024-06-21 18:45:13,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62079 conditions, 16196 events. 11706/16196 cut-off events. For 75049/75049 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 87673 event pairs, 5788 based on Foata normal form. 3/16140 useless extension candidates. Maximal degree in co-relation 62046. Up to 15773 conditions per place. [2024-06-21 18:45:13,419 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 117 selfloop transitions, 24 changer transitions 0/147 dead transitions. [2024-06-21 18:45:13,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 147 transitions, 1231 flow [2024-06-21 18:45:13,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:45:13,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:45:13,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-21 18:45:13,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4725274725274725 [2024-06-21 18:45:13,437 INFO L175 Difference]: Start difference. First operand has 82 places, 106 transitions, 779 flow. Second operand 7 states and 172 transitions. [2024-06-21 18:45:13,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 147 transitions, 1231 flow [2024-06-21 18:45:13,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 147 transitions, 1165 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-06-21 18:45:13,501 INFO L231 Difference]: Finished difference. Result has 88 places, 114 transitions, 854 flow [2024-06-21 18:45:13,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=713, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=854, PETRI_PLACES=88, PETRI_TRANSITIONS=114} [2024-06-21 18:45:13,504 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 33 predicate places. [2024-06-21 18:45:13,504 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 114 transitions, 854 flow [2024-06-21 18:45:13,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:45:13,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:45:13,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:45:13,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 18:45:13,505 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:45:13,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:45:13,506 INFO L85 PathProgramCache]: Analyzing trace with hash 771361283, now seen corresponding path program 2 times [2024-06-21 18:45:13,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:45:13,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166535105] [2024-06-21 18:45:13,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:45:13,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:45:13,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:45:15,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:45:15,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:45:15,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166535105] [2024-06-21 18:45:15,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166535105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:45:15,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:45:15,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:45:15,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218857401] [2024-06-21 18:45:15,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:45:15,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:45:15,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:45:15,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:45:15,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:45:15,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-21 18:45:15,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 114 transitions, 854 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:45:15,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:45:15,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-21 18:45:15,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:45:17,361 INFO L124 PetriNetUnfolderBase]: 11911/16479 cut-off events. [2024-06-21 18:45:17,361 INFO L125 PetriNetUnfolderBase]: For 94945/94945 co-relation queries the response was YES. [2024-06-21 18:45:17,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67426 conditions, 16479 events. 11911/16479 cut-off events. For 94945/94945 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 89021 event pairs, 5466 based on Foata normal form. 6/16424 useless extension candidates. Maximal degree in co-relation 67390. Up to 15805 conditions per place. [2024-06-21 18:45:17,497 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 113 selfloop transitions, 50 changer transitions 0/169 dead transitions. [2024-06-21 18:45:17,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 169 transitions, 1580 flow [2024-06-21 18:45:17,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:45:17,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:45:17,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-21 18:45:17,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47115384615384615 [2024-06-21 18:45:17,500 INFO L175 Difference]: Start difference. First operand has 88 places, 114 transitions, 854 flow. Second operand 8 states and 196 transitions. [2024-06-21 18:45:17,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 169 transitions, 1580 flow [2024-06-21 18:45:17,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 169 transitions, 1500 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-21 18:45:17,572 INFO L231 Difference]: Finished difference. Result has 93 places, 127 transitions, 1064 flow [2024-06-21 18:45:17,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=774, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1064, PETRI_PLACES=93, PETRI_TRANSITIONS=127} [2024-06-21 18:45:17,574 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 38 predicate places. [2024-06-21 18:45:17,574 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 127 transitions, 1064 flow [2024-06-21 18:45:17,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:45:17,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:45:17,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:45:17,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-21 18:45:17,575 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:45:17,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:45:17,575 INFO L85 PathProgramCache]: Analyzing trace with hash 971729783, now seen corresponding path program 3 times [2024-06-21 18:45:17,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:45:17,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206103296] [2024-06-21 18:45:17,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:45:17,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:45:17,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:45:19,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:45:19,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:45:19,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206103296] [2024-06-21 18:45:19,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206103296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:45:19,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:45:19,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:45:19,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227754716] [2024-06-21 18:45:19,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:45:19,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:45:19,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:45:19,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:45:19,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:45:19,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-21 18:45:19,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 127 transitions, 1064 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:45:19,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:45:19,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-21 18:45:19,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:45:21,338 INFO L124 PetriNetUnfolderBase]: 11902/16473 cut-off events. [2024-06-21 18:45:21,338 INFO L125 PetriNetUnfolderBase]: For 119314/119314 co-relation queries the response was YES. [2024-06-21 18:45:21,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72207 conditions, 16473 events. 11902/16473 cut-off events. For 119314/119314 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 89248 event pairs, 5662 based on Foata normal form. 3/16414 useless extension candidates. Maximal degree in co-relation 72169. Up to 16044 conditions per place. [2024-06-21 18:45:21,434 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 132 selfloop transitions, 24 changer transitions 0/162 dead transitions. [2024-06-21 18:45:21,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 162 transitions, 1534 flow [2024-06-21 18:45:21,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:45:21,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:45:21,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-21 18:45:21,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46703296703296704 [2024-06-21 18:45:21,436 INFO L175 Difference]: Start difference. First operand has 93 places, 127 transitions, 1064 flow. Second operand 7 states and 170 transitions. [2024-06-21 18:45:21,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 162 transitions, 1534 flow [2024-06-21 18:45:21,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 162 transitions, 1494 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-21 18:45:21,492 INFO L231 Difference]: Finished difference. Result has 97 places, 131 transitions, 1148 flow [2024-06-21 18:45:21,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1024, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1148, PETRI_PLACES=97, PETRI_TRANSITIONS=131} [2024-06-21 18:45:21,493 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 42 predicate places. [2024-06-21 18:45:21,493 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 131 transitions, 1148 flow [2024-06-21 18:45:21,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:45:21,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:45:21,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:45:21,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-21 18:45:21,494 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:45:21,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:45:21,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1891221781, now seen corresponding path program 4 times [2024-06-21 18:45:21,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:45:21,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824485536] [2024-06-21 18:45:21,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:45:21,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:45:21,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:45:23,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:45:23,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:45:23,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824485536] [2024-06-21 18:45:23,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824485536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:45:23,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:45:23,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:45:23,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022934959] [2024-06-21 18:45:23,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:45:23,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:45:23,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:45:23,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:45:23,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:45:23,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-21 18:45:23,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 131 transitions, 1148 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:45:23,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:45:23,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-21 18:45:23,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:45:25,969 INFO L124 PetriNetUnfolderBase]: 12057/16714 cut-off events. [2024-06-21 18:45:25,969 INFO L125 PetriNetUnfolderBase]: For 135474/135480 co-relation queries the response was YES. [2024-06-21 18:45:26,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75521 conditions, 16714 events. 12057/16714 cut-off events. For 135474/135480 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 90537 event pairs, 5644 based on Foata normal form. 7/16661 useless extension candidates. Maximal degree in co-relation 75482. Up to 16147 conditions per place. [2024-06-21 18:45:26,093 INFO L140 encePairwiseOnDemand]: 37/52 looper letters, 150 selfloop transitions, 65 changer transitions 0/221 dead transitions. [2024-06-21 18:45:26,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 221 transitions, 2173 flow [2024-06-21 18:45:26,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:45:26,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:45:26,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 248 transitions. [2024-06-21 18:45:26,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47692307692307695 [2024-06-21 18:45:26,096 INFO L175 Difference]: Start difference. First operand has 97 places, 131 transitions, 1148 flow. Second operand 10 states and 248 transitions. [2024-06-21 18:45:26,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 221 transitions, 2173 flow [2024-06-21 18:45:26,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 221 transitions, 2089 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-21 18:45:26,194 INFO L231 Difference]: Finished difference. Result has 104 places, 164 transitions, 1564 flow [2024-06-21 18:45:26,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1064, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1564, PETRI_PLACES=104, PETRI_TRANSITIONS=164} [2024-06-21 18:45:26,195 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 49 predicate places. [2024-06-21 18:45:26,195 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 164 transitions, 1564 flow [2024-06-21 18:45:26,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:45:26,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:45:26,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:45:26,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-21 18:45:26,196 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:45:26,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:45:26,197 INFO L85 PathProgramCache]: Analyzing trace with hash -2048073899, now seen corresponding path program 5 times [2024-06-21 18:45:26,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:45:26,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178440057] [2024-06-21 18:45:26,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:45:26,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:45:26,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:45:28,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:45:28,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:45:28,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178440057] [2024-06-21 18:45:28,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178440057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:45:28,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:45:28,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:45:28,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293810263] [2024-06-21 18:45:28,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:45:28,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:45:28,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:45:28,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:45:28,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:45:28,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-21 18:45:28,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 164 transitions, 1564 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:45:28,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:45:28,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-21 18:45:28,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:45:31,133 INFO L124 PetriNetUnfolderBase]: 12143/16847 cut-off events. [2024-06-21 18:45:31,133 INFO L125 PetriNetUnfolderBase]: For 165175/165187 co-relation queries the response was YES. [2024-06-21 18:45:31,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80794 conditions, 16847 events. 12143/16847 cut-off events. For 165175/165187 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 91427 event pairs, 5647 based on Foata normal form. 15/16802 useless extension candidates. Maximal degree in co-relation 80752. Up to 16271 conditions per place. [2024-06-21 18:45:31,234 INFO L140 encePairwiseOnDemand]: 37/52 looper letters, 153 selfloop transitions, 77 changer transitions 0/236 dead transitions. [2024-06-21 18:45:31,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 236 transitions, 2521 flow [2024-06-21 18:45:31,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:45:31,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:45:31,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-21 18:45:31,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47836538461538464 [2024-06-21 18:45:31,236 INFO L175 Difference]: Start difference. First operand has 104 places, 164 transitions, 1564 flow. Second operand 8 states and 199 transitions. [2024-06-21 18:45:31,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 236 transitions, 2521 flow [2024-06-21 18:45:31,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 236 transitions, 2301 flow, removed 82 selfloop flow, removed 4 redundant places. [2024-06-21 18:45:31,361 INFO L231 Difference]: Finished difference. Result has 109 places, 197 transitions, 1937 flow [2024-06-21 18:45:31,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1401, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1937, PETRI_PLACES=109, PETRI_TRANSITIONS=197} [2024-06-21 18:45:31,363 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 54 predicate places. [2024-06-21 18:45:31,363 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 197 transitions, 1937 flow [2024-06-21 18:45:31,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:45:31,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:45:31,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:45:31,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-21 18:45:31,364 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:45:31,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:45:31,364 INFO L85 PathProgramCache]: Analyzing trace with hash -2047953929, now seen corresponding path program 6 times [2024-06-21 18:45:31,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:45:31,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934663458] [2024-06-21 18:45:31,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:45:31,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:45:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:45:33,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:45:33,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:45:33,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934663458] [2024-06-21 18:45:33,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934663458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:45:33,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:45:33,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:45:33,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712396269] [2024-06-21 18:45:33,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:45:33,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:45:33,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:45:33,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:45:33,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:45:33,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-21 18:45:33,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 197 transitions, 1937 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:45:33,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:45:33,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-21 18:45:33,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:45:36,087 INFO L124 PetriNetUnfolderBase]: 12188/16910 cut-off events. [2024-06-21 18:45:36,087 INFO L125 PetriNetUnfolderBase]: For 179479/179479 co-relation queries the response was YES. [2024-06-21 18:45:36,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82535 conditions, 16910 events. 12188/16910 cut-off events. For 179479/179479 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 91690 event pairs, 5474 based on Foata normal form. 3/16854 useless extension candidates. Maximal degree in co-relation 82490. Up to 16126 conditions per place. [2024-06-21 18:45:36,226 INFO L140 encePairwiseOnDemand]: 37/52 looper letters, 111 selfloop transitions, 141 changer transitions 0/258 dead transitions. [2024-06-21 18:45:36,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 258 transitions, 2816 flow [2024-06-21 18:45:36,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:45:36,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:45:36,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-21 18:45:36,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4855769230769231 [2024-06-21 18:45:36,228 INFO L175 Difference]: Start difference. First operand has 109 places, 197 transitions, 1937 flow. Second operand 8 states and 202 transitions. [2024-06-21 18:45:36,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 258 transitions, 2816 flow [2024-06-21 18:45:36,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 258 transitions, 2744 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-21 18:45:36,362 INFO L231 Difference]: Finished difference. Result has 115 places, 220 transitions, 2448 flow [2024-06-21 18:45:36,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1865, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2448, PETRI_PLACES=115, PETRI_TRANSITIONS=220} [2024-06-21 18:45:36,362 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 60 predicate places. [2024-06-21 18:45:36,362 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 220 transitions, 2448 flow [2024-06-21 18:45:36,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:45:36,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:45:36,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:45:36,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-21 18:45:36,363 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:45:36,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:45:36,363 INFO L85 PathProgramCache]: Analyzing trace with hash 971976047, now seen corresponding path program 1 times [2024-06-21 18:45:36,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:45:36,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075693551] [2024-06-21 18:45:36,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:45:36,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:45:36,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:45:38,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:45:38,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:45:38,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075693551] [2024-06-21 18:45:38,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075693551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:45:38,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:45:38,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:45:38,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229548368] [2024-06-21 18:45:38,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:45:38,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:45:38,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:45:38,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:45:38,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:45:38,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-21 18:45:38,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 220 transitions, 2448 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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) [2024-06-21 18:45:38,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:45:38,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-21 18:45:38,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:45:41,778 INFO L124 PetriNetUnfolderBase]: 15016/20537 cut-off events. [2024-06-21 18:45:41,778 INFO L125 PetriNetUnfolderBase]: For 256157/256157 co-relation queries the response was YES. [2024-06-21 18:45:41,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104015 conditions, 20537 events. 15016/20537 cut-off events. For 256157/256157 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 108806 event pairs, 6851 based on Foata normal form. 6/20507 useless extension candidates. Maximal degree in co-relation 103968. Up to 20160 conditions per place. [2024-06-21 18:45:41,933 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 230 selfloop transitions, 24 changer transitions 0/259 dead transitions. [2024-06-21 18:45:41,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 259 transitions, 3202 flow [2024-06-21 18:45:41,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:45:41,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:45:41,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 177 transitions. [2024-06-21 18:45:41,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4254807692307692 [2024-06-21 18:45:41,936 INFO L175 Difference]: Start difference. First operand has 115 places, 220 transitions, 2448 flow. Second operand 8 states and 177 transitions. [2024-06-21 18:45:41,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 259 transitions, 3202 flow [2024-06-21 18:45:42,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 259 transitions, 3025 flow, removed 47 selfloop flow, removed 4 redundant places. [2024-06-21 18:45:42,123 INFO L231 Difference]: Finished difference. Result has 120 places, 229 transitions, 2468 flow [2024-06-21 18:45:42,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2274, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2468, PETRI_PLACES=120, PETRI_TRANSITIONS=229} [2024-06-21 18:45:42,123 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 65 predicate places. [2024-06-21 18:45:42,123 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 229 transitions, 2468 flow [2024-06-21 18:45:42,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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) [2024-06-21 18:45:42,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:45:42,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:45:42,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-21 18:45:42,124 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:45:42,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:45:42,124 INFO L85 PathProgramCache]: Analyzing trace with hash -529356780, now seen corresponding path program 1 times [2024-06-21 18:45:42,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:45:42,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342836309] [2024-06-21 18:45:42,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:45:42,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:45:42,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:45:43,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:45:43,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:45:43,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342836309] [2024-06-21 18:45:43,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342836309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:45:43,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:45:43,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 18:45:43,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581183413] [2024-06-21 18:45:43,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:45:43,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 18:45:43,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:45:43,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 18:45:43,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-21 18:45:43,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-21 18:45:43,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 229 transitions, 2468 flow. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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) [2024-06-21 18:45:43,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:45:43,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-21 18:45:43,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:45:46,767 INFO L124 PetriNetUnfolderBase]: 14330/20004 cut-off events. [2024-06-21 18:45:46,768 INFO L125 PetriNetUnfolderBase]: For 275625/275778 co-relation queries the response was YES. [2024-06-21 18:45:46,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104177 conditions, 20004 events. 14330/20004 cut-off events. For 275625/275778 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 110069 event pairs, 6904 based on Foata normal form. 102/20092 useless extension candidates. Maximal degree in co-relation 104128. Up to 19207 conditions per place. [2024-06-21 18:45:46,959 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 217 selfloop transitions, 12 changer transitions 0/246 dead transitions. [2024-06-21 18:45:46,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 246 transitions, 3036 flow [2024-06-21 18:45:46,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 18:45:46,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 18:45:46,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-06-21 18:45:46,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-21 18:45:46,961 INFO L175 Difference]: Start difference. First operand has 120 places, 229 transitions, 2468 flow. Second operand 5 states and 120 transitions. [2024-06-21 18:45:46,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 246 transitions, 3036 flow [2024-06-21 18:45:47,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 246 transitions, 2910 flow, removed 43 selfloop flow, removed 5 redundant places. [2024-06-21 18:45:47,212 INFO L231 Difference]: Finished difference. Result has 120 places, 233 transitions, 2429 flow [2024-06-21 18:45:47,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2342, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2429, PETRI_PLACES=120, PETRI_TRANSITIONS=233} [2024-06-21 18:45:47,213 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 65 predicate places. [2024-06-21 18:45:47,213 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 233 transitions, 2429 flow [2024-06-21 18:45:47,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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) [2024-06-21 18:45:47,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:45:47,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:45:47,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-21 18:45:47,214 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:45:47,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:45:47,214 INFO L85 PathProgramCache]: Analyzing trace with hash -859255460, now seen corresponding path program 1 times [2024-06-21 18:45:47,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:45:47,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033300153] [2024-06-21 18:45:47,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:45:47,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:45:47,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:45:49,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:45:49,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:45:49,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033300153] [2024-06-21 18:45:49,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033300153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:45:49,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:45:49,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:45:49,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226265022] [2024-06-21 18:45:49,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:45:49,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:45:49,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:45:49,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:45:49,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:45:49,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-21 18:45:49,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 233 transitions, 2429 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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) [2024-06-21 18:45:49,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:45:49,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-21 18:45:49,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:45:53,537 INFO L124 PetriNetUnfolderBase]: 14745/20404 cut-off events. [2024-06-21 18:45:53,538 INFO L125 PetriNetUnfolderBase]: For 325757/325781 co-relation queries the response was YES. [2024-06-21 18:45:53,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114706 conditions, 20404 events. 14745/20404 cut-off events. For 325757/325781 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 112260 event pairs, 6284 based on Foata normal form. 12/20348 useless extension candidates. Maximal degree in co-relation 114657. Up to 19632 conditions per place. [2024-06-21 18:45:53,698 INFO L140 encePairwiseOnDemand]: 37/52 looper letters, 221 selfloop transitions, 68 changer transitions 0/296 dead transitions. [2024-06-21 18:45:53,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 296 transitions, 3505 flow [2024-06-21 18:45:53,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:45:53,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:45:53,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 237 transitions. [2024-06-21 18:45:53,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45576923076923076 [2024-06-21 18:45:53,701 INFO L175 Difference]: Start difference. First operand has 120 places, 233 transitions, 2429 flow. Second operand 10 states and 237 transitions. [2024-06-21 18:45:53,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 296 transitions, 3505 flow [2024-06-21 18:45:53,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 296 transitions, 3448 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-21 18:45:53,904 INFO L231 Difference]: Finished difference. Result has 128 places, 245 transitions, 2699 flow [2024-06-21 18:45:53,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2372, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2699, PETRI_PLACES=128, PETRI_TRANSITIONS=245} [2024-06-21 18:45:53,905 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 73 predicate places. [2024-06-21 18:45:53,905 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 245 transitions, 2699 flow [2024-06-21 18:45:53,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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) [2024-06-21 18:45:53,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:45:53,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:45:53,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-21 18:45:53,906 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:45:53,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:45:53,906 INFO L85 PathProgramCache]: Analyzing trace with hash -904323710, now seen corresponding path program 2 times [2024-06-21 18:45:53,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:45:53,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424426328] [2024-06-21 18:45:53,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:45:53,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:45:54,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:45:56,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:45:56,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:45:56,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424426328] [2024-06-21 18:45:56,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424426328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:45:56,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:45:56,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:45:56,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005243734] [2024-06-21 18:45:56,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:45:56,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:45:56,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:45:56,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:45:56,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:45:56,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-21 18:45:56,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 245 transitions, 2699 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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) [2024-06-21 18:45:56,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:45:56,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-21 18:45:56,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:45:59,580 INFO L124 PetriNetUnfolderBase]: 14720/20371 cut-off events. [2024-06-21 18:45:59,581 INFO L125 PetriNetUnfolderBase]: For 365216/365240 co-relation queries the response was YES. [2024-06-21 18:45:59,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119161 conditions, 20371 events. 14720/20371 cut-off events. For 365216/365240 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 112157 event pairs, 6301 based on Foata normal form. 14/20315 useless extension candidates. Maximal degree in co-relation 119110. Up to 19676 conditions per place. [2024-06-21 18:46:00,039 INFO L140 encePairwiseOnDemand]: 37/52 looper letters, 217 selfloop transitions, 60 changer transitions 0/284 dead transitions. [2024-06-21 18:46:00,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 284 transitions, 3449 flow [2024-06-21 18:46:00,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:46:00,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:46:00,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 208 transitions. [2024-06-21 18:46:00,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-21 18:46:00,043 INFO L175 Difference]: Start difference. First operand has 128 places, 245 transitions, 2699 flow. Second operand 9 states and 208 transitions. [2024-06-21 18:46:00,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 284 transitions, 3449 flow [2024-06-21 18:46:00,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 284 transitions, 3310 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-21 18:46:00,274 INFO L231 Difference]: Finished difference. Result has 131 places, 245 transitions, 2696 flow [2024-06-21 18:46:00,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2560, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2696, PETRI_PLACES=131, PETRI_TRANSITIONS=245} [2024-06-21 18:46:00,275 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 76 predicate places. [2024-06-21 18:46:00,275 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 245 transitions, 2696 flow [2024-06-21 18:46:00,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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) [2024-06-21 18:46:00,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:46:00,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:46:00,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-21 18:46:00,276 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:46:00,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:46:00,276 INFO L85 PathProgramCache]: Analyzing trace with hash -855446180, now seen corresponding path program 3 times [2024-06-21 18:46:00,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:46:00,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104340594] [2024-06-21 18:46:00,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:46:00,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:46:00,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:46:02,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:46:02,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:46:02,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104340594] [2024-06-21 18:46:02,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104340594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:46:02,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:46:02,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:46:02,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004465602] [2024-06-21 18:46:02,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:46:02,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:46:02,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:46:02,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:46:02,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:46:02,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-21 18:46:02,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 245 transitions, 2696 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:46:02,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:46:02,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-21 18:46:02,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:46:05,881 INFO L124 PetriNetUnfolderBase]: 14833/20538 cut-off events. [2024-06-21 18:46:05,881 INFO L125 PetriNetUnfolderBase]: For 394503/394526 co-relation queries the response was YES. [2024-06-21 18:46:05,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121952 conditions, 20538 events. 14833/20538 cut-off events. For 394503/394526 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 113018 event pairs, 6334 based on Foata normal form. 28/20494 useless extension candidates. Maximal degree in co-relation 121899. Up to 19587 conditions per place. [2024-06-21 18:46:06,053 INFO L140 encePairwiseOnDemand]: 37/52 looper letters, 185 selfloop transitions, 109 changer transitions 0/301 dead transitions. [2024-06-21 18:46:06,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 301 transitions, 3807 flow [2024-06-21 18:46:06,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:46:06,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:46:06,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-21 18:46:06,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49038461538461536 [2024-06-21 18:46:06,055 INFO L175 Difference]: Start difference. First operand has 131 places, 245 transitions, 2696 flow. Second operand 8 states and 204 transitions. [2024-06-21 18:46:06,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 301 transitions, 3807 flow [2024-06-21 18:46:06,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 301 transitions, 3691 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-21 18:46:06,397 INFO L231 Difference]: Finished difference. Result has 134 places, 254 transitions, 3037 flow [2024-06-21 18:46:06,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2580, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3037, PETRI_PLACES=134, PETRI_TRANSITIONS=254} [2024-06-21 18:46:06,397 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 79 predicate places. [2024-06-21 18:46:06,397 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 254 transitions, 3037 flow [2024-06-21 18:46:06,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:46:06,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:46:06,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:46:06,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-21 18:46:06,398 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:46:06,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:46:06,398 INFO L85 PathProgramCache]: Analyzing trace with hash -855440228, now seen corresponding path program 1 times [2024-06-21 18:46:06,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:46:06,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869140209] [2024-06-21 18:46:06,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:46:06,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:46:06,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:46:08,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:46:08,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:46:08,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869140209] [2024-06-21 18:46:08,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869140209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:46:08,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:46:08,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:46:08,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943947291] [2024-06-21 18:46:08,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:46:08,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:46:08,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:46:08,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:46:08,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:46:08,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-21 18:46:08,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 254 transitions, 3037 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 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) [2024-06-21 18:46:08,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:46:08,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-21 18:46:08,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:46:12,133 INFO L124 PetriNetUnfolderBase]: 15277/21022 cut-off events. [2024-06-21 18:46:12,133 INFO L125 PetriNetUnfolderBase]: For 436532/436540 co-relation queries the response was YES. [2024-06-21 18:46:12,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127438 conditions, 21022 events. 15277/21022 cut-off events. For 436532/436540 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 112314 event pairs, 6792 based on Foata normal form. 11/21026 useless extension candidates. Maximal degree in co-relation 127382. Up to 20384 conditions per place. [2024-06-21 18:46:12,283 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 247 selfloop transitions, 56 changer transitions 0/308 dead transitions. [2024-06-21 18:46:12,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 308 transitions, 4033 flow [2024-06-21 18:46:12,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:46:12,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:46:12,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-21 18:46:12,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45913461538461536 [2024-06-21 18:46:12,286 INFO L175 Difference]: Start difference. First operand has 134 places, 254 transitions, 3037 flow. Second operand 8 states and 191 transitions. [2024-06-21 18:46:12,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 308 transitions, 4033 flow [2024-06-21 18:46:12,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 308 transitions, 3879 flow, removed 42 selfloop flow, removed 3 redundant places. [2024-06-21 18:46:12,833 INFO L231 Difference]: Finished difference. Result has 140 places, 267 transitions, 3206 flow [2024-06-21 18:46:12,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2892, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3206, PETRI_PLACES=140, PETRI_TRANSITIONS=267} [2024-06-21 18:46:12,834 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 85 predicate places. [2024-06-21 18:46:12,834 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 267 transitions, 3206 flow [2024-06-21 18:46:12,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 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) [2024-06-21 18:46:12,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:46:12,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:46:12,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-21 18:46:12,835 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:46:12,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:46:12,835 INFO L85 PathProgramCache]: Analyzing trace with hash 58859352, now seen corresponding path program 2 times [2024-06-21 18:46:12,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:46:12,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549366369] [2024-06-21 18:46:12,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:46:12,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:46:12,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:46:14,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:46:14,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:46:14,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549366369] [2024-06-21 18:46:14,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549366369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:46:14,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:46:14,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:46:14,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935664082] [2024-06-21 18:46:14,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:46:14,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:46:14,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:46:14,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:46:14,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:46:14,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-21 18:46:14,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 267 transitions, 3206 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 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) [2024-06-21 18:46:14,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:46:14,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-21 18:46:14,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:46:18,313 INFO L124 PetriNetUnfolderBase]: 15339/21107 cut-off events. [2024-06-21 18:46:18,314 INFO L125 PetriNetUnfolderBase]: For 465188/465188 co-relation queries the response was YES. [2024-06-21 18:46:18,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130524 conditions, 21107 events. 15339/21107 cut-off events. For 465188/465188 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 112782 event pairs, 6808 based on Foata normal form. 3/21103 useless extension candidates. Maximal degree in co-relation 130465. Up to 20528 conditions per place. [2024-06-21 18:46:18,496 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 281 selfloop transitions, 36 changer transitions 0/322 dead transitions. [2024-06-21 18:46:18,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 322 transitions, 4415 flow [2024-06-21 18:46:18,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:46:18,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:46:18,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-21 18:46:18,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4697802197802198 [2024-06-21 18:46:18,498 INFO L175 Difference]: Start difference. First operand has 140 places, 267 transitions, 3206 flow. Second operand 7 states and 171 transitions. [2024-06-21 18:46:18,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 322 transitions, 4415 flow [2024-06-21 18:46:18,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 322 transitions, 4248 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-21 18:46:18,990 INFO L231 Difference]: Finished difference. Result has 143 places, 282 transitions, 3372 flow [2024-06-21 18:46:18,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=3055, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3372, PETRI_PLACES=143, PETRI_TRANSITIONS=282} [2024-06-21 18:46:18,991 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 88 predicate places. [2024-06-21 18:46:18,991 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 282 transitions, 3372 flow [2024-06-21 18:46:18,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 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) [2024-06-21 18:46:18,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:46:18,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:46:18,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-21 18:46:18,992 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:46:18,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:46:18,992 INFO L85 PathProgramCache]: Analyzing trace with hash -697253258, now seen corresponding path program 3 times [2024-06-21 18:46:18,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:46:18,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944577356] [2024-06-21 18:46:18,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:46:18,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:46:19,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:46:20,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:46:20,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:46:20,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944577356] [2024-06-21 18:46:20,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944577356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:46:20,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:46:20,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:46:20,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508769461] [2024-06-21 18:46:20,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:46:20,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:46:20,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:46:20,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:46:20,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:46:20,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-21 18:46:20,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 282 transitions, 3372 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 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) [2024-06-21 18:46:20,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:46:20,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-21 18:46:20,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:46:25,064 INFO L124 PetriNetUnfolderBase]: 17382/23461 cut-off events. [2024-06-21 18:46:25,064 INFO L125 PetriNetUnfolderBase]: For 573799/573799 co-relation queries the response was YES. [2024-06-21 18:46:25,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148680 conditions, 23461 events. 17382/23461 cut-off events. For 573799/573799 co-relation queries the response was YES. Maximal size of possible extension queue 677. Compared 121147 event pairs, 7935 based on Foata normal form. 3/23462 useless extension candidates. Maximal degree in co-relation 148619. Up to 23283 conditions per place. [2024-06-21 18:46:25,258 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 296 selfloop transitions, 36 changer transitions 0/336 dead transitions. [2024-06-21 18:46:25,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 336 transitions, 4504 flow [2024-06-21 18:46:25,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:46:25,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:46:25,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 180 transitions. [2024-06-21 18:46:25,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4326923076923077 [2024-06-21 18:46:25,260 INFO L175 Difference]: Start difference. First operand has 143 places, 282 transitions, 3372 flow. Second operand 8 states and 180 transitions. [2024-06-21 18:46:25,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 336 transitions, 4504 flow [2024-06-21 18:46:25,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 336 transitions, 4437 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-21 18:46:25,702 INFO L231 Difference]: Finished difference. Result has 149 places, 298 transitions, 3696 flow [2024-06-21 18:46:25,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=3308, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3696, PETRI_PLACES=149, PETRI_TRANSITIONS=298} [2024-06-21 18:46:25,702 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 94 predicate places. [2024-06-21 18:46:25,702 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 298 transitions, 3696 flow [2024-06-21 18:46:25,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 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) [2024-06-21 18:46:25,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:46:25,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:46:25,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-21 18:46:25,703 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:46:25,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:46:25,703 INFO L85 PathProgramCache]: Analyzing trace with hash -704877770, now seen corresponding path program 4 times [2024-06-21 18:46:25,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:46:25,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687908039] [2024-06-21 18:46:25,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:46:25,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:46:25,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:46:27,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:46:27,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:46:27,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687908039] [2024-06-21 18:46:27,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687908039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:46:27,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:46:27,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:46:27,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292671014] [2024-06-21 18:46:27,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:46:27,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:46:27,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:46:27,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:46:27,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:46:28,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-21 18:46:28,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 298 transitions, 3696 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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) [2024-06-21 18:46:28,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:46:28,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-21 18:46:28,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand