./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/mutex-meet/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 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/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i ./goblint.2024-05-07_14-17-48.files/mutex-meet/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-b44c828-m [2024-05-12 10:35:00,782 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 10:35:00,867 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 10:35:00,874 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 10:35:00,875 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 10:35:00,903 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 10:35:00,911 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 10:35:00,911 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 10:35:00,912 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 10:35:00,917 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 10:35:00,918 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 10:35:00,918 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 10:35:00,919 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 10:35:00,921 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 10:35:00,921 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 10:35:00,921 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 10:35:00,921 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 10:35:00,922 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 10:35:00,922 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 10:35:00,922 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 10:35:00,923 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 10:35:00,923 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 10:35:00,923 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 10:35:00,924 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 10:35:00,924 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 10:35:00,924 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 10:35:00,924 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 10:35:00,925 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 10:35:00,925 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 10:35:00,926 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 10:35:00,927 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 10:35:00,927 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 10:35:00,927 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 10:35:00,927 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 10:35:00,927 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 10:35:00,928 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 10:35:00,928 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 10:35:00,928 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 10:35:00,928 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 10:35:00,929 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 10:35:00,929 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 10:35:00,929 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 10:35:00,929 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 10:35:00,930 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 10:35:01,217 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 10:35:01,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 10:35:01,238 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 10:35:01,239 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 10:35:01,240 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 10:35:01,241 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/mutex-meet/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml [2024-05-12 10:35:01,358 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 10:35:01,358 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 10:35:01,359 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-05-12 10:35:02,473 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 10:35:02,741 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 10:35:02,742 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-05-12 10:35:02,754 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84892d4ba/2c0f2651acfb476080f482187959187a/FLAG2b776e6d9 [2024-05-12 10:35:02,767 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84892d4ba/2c0f2651acfb476080f482187959187a [2024-05-12 10:35:02,772 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 10:35:02,774 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 10:35:02,775 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 10:35:02,775 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 10:35:02,778 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 10:35:02,779 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 10:35:01" (1/2) ... [2024-05-12 10:35:02,779 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e3c97e5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:35:02, skipping insertion in model container [2024-05-12 10:35:02,780 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 10:35:01" (1/2) ... [2024-05-12 10:35:02,781 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@55517144 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:35:02, skipping insertion in model container [2024-05-12 10:35:02,782 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 10:35:02" (2/2) ... [2024-05-12 10:35:02,782 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e3c97e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:35:02, skipping insertion in model container [2024-05-12 10:35:02,782 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 10:35:02" (2/2) ... [2024-05-12 10:35:02,782 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 10:35:02,839 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 10:35:02,840 INFO L97 edCorrectnessWitness]: Location invariant before [L764-L764] ((((((! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL && (1LL - (long long )__unbuffered_p1_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (1LL - (long long )x) + (long long )y >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p0_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x >= 0LL) && (long long )__unbuffered_cnt + (long long )y >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y >= 0LL) && (long long )main$tmp_guard1 + (long long )x >= 0LL) && (long long )main$tmp_guard1 + (long long )y >= 0LL) && (long long )x + (long long )y >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || ((((((((((((0 <= __unbuffered_cnt && 0 <= __unbuffered_p0_EAX) && 0 <= __unbuffered_p1_EAX) && 0 <= x) && 0 <= y) && __unbuffered_p0_EAX <= 1) && __unbuffered_p1_EAX <= 1) && x <= 1) && y <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-05-12 10:35:02,840 INFO L97 edCorrectnessWitness]: Location invariant before [L763-L763] ((((((! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL && (1LL - (long long )__unbuffered_p1_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (1LL - (long long )x) + (long long )y >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p0_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x >= 0LL) && (long long )__unbuffered_cnt + (long long )y >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y >= 0LL) && (long long )main$tmp_guard1 + (long long )x >= 0LL) && (long long )main$tmp_guard1 + (long long )y >= 0LL) && (long long )x + (long long )y >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || ((((((((((((0 <= __unbuffered_cnt && 0 <= __unbuffered_p0_EAX) && 0 <= __unbuffered_p1_EAX) && 0 <= x) && 0 <= y) && __unbuffered_p0_EAX <= 1) && __unbuffered_p1_EAX <= 1) && x <= 1) && y <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-05-12 10:35:02,840 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 10:35:02,841 INFO L106 edCorrectnessWitness]: ghost_update [L761-L761] multithreaded = 1; [2024-05-12 10:35:02,892 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 10:35:03,050 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i[1017,1030] [2024-05-12 10:35:03,170 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 10:35:03,179 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-05-12 10:35:03,211 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i[1017,1030] Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 10:35:03,304 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 10:35:03,355 INFO L206 MainTranslator]: Completed translation [2024-05-12 10:35:03,356 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:35:03 WrapperNode [2024-05-12 10:35:03,356 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 10:35:03,358 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 10:35:03,358 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 10:35:03,358 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 10:35:03,365 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:35:03" (1/1) ... [2024-05-12 10:35:03,395 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:35:03" (1/1) ... [2024-05-12 10:35:03,435 INFO L138 Inliner]: procedures = 175, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 63 [2024-05-12 10:35:03,436 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 10:35:03,437 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 10:35:03,437 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 10:35:03,437 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 10:35:03,447 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:35:03" (1/1) ... [2024-05-12 10:35:03,448 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:35:03" (1/1) ... [2024-05-12 10:35:03,459 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:35:03" (1/1) ... [2024-05-12 10:35:03,488 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-05-12 10:35:03,488 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:35:03" (1/1) ... [2024-05-12 10:35:03,488 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:35:03" (1/1) ... [2024-05-12 10:35:03,502 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:35:03" (1/1) ... [2024-05-12 10:35:03,505 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:35:03" (1/1) ... [2024-05-12 10:35:03,510 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:35:03" (1/1) ... [2024-05-12 10:35:03,512 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:35:03" (1/1) ... [2024-05-12 10:35:03,515 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 10:35:03,519 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 10:35:03,520 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 10:35:03,520 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 10:35:03,521 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:35:03" (1/1) ... [2024-05-12 10:35:03,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 10:35:03,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 10:35:03,568 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) [2024-05-12 10:35:03,612 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 [2024-05-12 10:35:03,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 10:35:03,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 10:35:03,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 10:35:03,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 10:35:03,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 10:35:03,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 10:35:03,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 10:35:03,655 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-05-12 10:35:03,655 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-05-12 10:35:03,655 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-05-12 10:35:03,655 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-05-12 10:35:03,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 10:35:03,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 10:35:03,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 10:35:03,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 10:35:03,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 10:35:03,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 10:35:03,659 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 10:35:03,763 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 10:35:03,764 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 10:35:04,030 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 10:35:04,031 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 10:35:04,092 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 10:35:04,092 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 10:35:04,093 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 10:35:04 BoogieIcfgContainer [2024-05-12 10:35:04,094 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 10:35:04,097 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 10:35:04,097 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 10:35:04,099 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 10:35:04,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 10:35:01" (1/4) ... [2024-05-12 10:35:04,100 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fcf2208 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 10:35:04, skipping insertion in model container [2024-05-12 10:35:04,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 10:35:02" (2/4) ... [2024-05-12 10:35:04,101 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fcf2208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 10:35:04, skipping insertion in model container [2024-05-12 10:35:04,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:35:03" (3/4) ... [2024-05-12 10:35:04,101 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fcf2208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 10:35:04, skipping insertion in model container [2024-05-12 10:35:04,102 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 10:35:04" (4/4) ... [2024-05-12 10:35:04,103 INFO L112 eAbstractionObserver]: Analyzing ICFG safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-05-12 10:35:04,117 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 10:35:04,118 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-05-12 10:35:04,118 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 10:35:04,159 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 10:35:04,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 35 transitions, 78 flow [2024-05-12 10:35:04,219 INFO L124 PetriNetUnfolderBase]: 1/33 cut-off events. [2024-05-12 10:35:04,220 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 10:35:04,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 33 events. 1/33 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2024-05-12 10:35:04,223 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 35 transitions, 78 flow [2024-05-12 10:35:04,226 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 30 transitions, 66 flow [2024-05-12 10:35:04,236 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 10:35:04,246 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;@54774818, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 10:35:04,247 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-05-12 10:35:04,254 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 10:35:04,255 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 10:35:04,255 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 10:35:04,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:35:04,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 10:35:04,256 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:35:04,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:35:04,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1392223833, now seen corresponding path program 1 times [2024-05-12 10:35:04,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:35:04,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085238636] [2024-05-12 10:35:04,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:35:04,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:35:04,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:35:05,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:35:05,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:35:05,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085238636] [2024-05-12 10:35:05,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085238636] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:35:05,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:35:05,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 10:35:05,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681724570] [2024-05-12 10:35:05,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:35:05,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 10:35:05,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:35:05,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 10:35:05,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 10:35:05,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-05-12 10:35:05,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:35:05,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:35:05,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-05-12 10:35:05,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:35:05,216 INFO L124 PetriNetUnfolderBase]: 114/244 cut-off events. [2024-05-12 10:35:05,216 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-05-12 10:35:05,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 469 conditions, 244 events. 114/244 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1044 event pairs, 45 based on Foata normal form. 1/240 useless extension candidates. Maximal degree in co-relation 455. Up to 202 conditions per place. [2024-05-12 10:35:05,221 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 23 selfloop transitions, 3 changer transitions 0/38 dead transitions. [2024-05-12 10:35:05,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 38 transitions, 137 flow [2024-05-12 10:35:05,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 10:35:05,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 10:35:05,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-05-12 10:35:05,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6952380952380952 [2024-05-12 10:35:05,236 INFO L175 Difference]: Start difference. First operand has 37 places, 30 transitions, 66 flow. Second operand 3 states and 73 transitions. [2024-05-12 10:35:05,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 38 transitions, 137 flow [2024-05-12 10:35:05,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 38 transitions, 134 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 10:35:05,242 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 85 flow [2024-05-12 10:35:05,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2024-05-12 10:35:05,247 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 1 predicate places. [2024-05-12 10:35:05,247 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 85 flow [2024-05-12 10:35:05,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:35:05,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:35:05,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:35:05,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 10:35:05,249 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:35:05,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:35:05,249 INFO L85 PathProgramCache]: Analyzing trace with hash -758741142, now seen corresponding path program 1 times [2024-05-12 10:35:05,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:35:05,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283269453] [2024-05-12 10:35:05,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:35:05,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:35:05,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:35:05,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:35:05,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:35:05,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283269453] [2024-05-12 10:35:05,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283269453] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:35:05,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:35:05,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 10:35:05,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258031746] [2024-05-12 10:35:05,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:35:05,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 10:35:05,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:35:05,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 10:35:05,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-05-12 10:35:05,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-05-12 10:35:05,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 85 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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) [2024-05-12 10:35:05,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:35:05,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-05-12 10:35:05,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:35:05,789 INFO L124 PetriNetUnfolderBase]: 179/364 cut-off events. [2024-05-12 10:35:05,790 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-05-12 10:35:05,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 790 conditions, 364 events. 179/364 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1701 event pairs, 43 based on Foata normal form. 2/364 useless extension candidates. Maximal degree in co-relation 775. Up to 284 conditions per place. [2024-05-12 10:35:05,797 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 34 selfloop transitions, 5 changer transitions 0/49 dead transitions. [2024-05-12 10:35:05,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 49 transitions, 204 flow [2024-05-12 10:35:05,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 10:35:05,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 10:35:05,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-05-12 10:35:05,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-05-12 10:35:05,802 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 85 flow. Second operand 4 states and 91 transitions. [2024-05-12 10:35:05,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 49 transitions, 204 flow [2024-05-12 10:35:05,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 49 transitions, 200 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 10:35:05,806 INFO L231 Difference]: Finished difference. Result has 42 places, 36 transitions, 118 flow [2024-05-12 10:35:05,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=118, PETRI_PLACES=42, PETRI_TRANSITIONS=36} [2024-05-12 10:35:05,810 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 5 predicate places. [2024-05-12 10:35:05,810 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 36 transitions, 118 flow [2024-05-12 10:35:05,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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) [2024-05-12 10:35:05,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:35:05,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:35:05,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 10:35:05,817 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:35:05,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:35:05,820 INFO L85 PathProgramCache]: Analyzing trace with hash -61574009, now seen corresponding path program 1 times [2024-05-12 10:35:05,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:35:05,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398930458] [2024-05-12 10:35:05,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:35:05,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:35:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:35:06,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:35:06,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:35:06,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398930458] [2024-05-12 10:35:06,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398930458] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:35:06,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:35:06,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 10:35:06,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83351851] [2024-05-12 10:35:06,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:35:06,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 10:35:06,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:35:06,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 10:35:06,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-05-12 10:35:06,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-05-12 10:35:06,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 118 flow. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:35:06,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:35:06,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-05-12 10:35:06,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:35:06,339 INFO L124 PetriNetUnfolderBase]: 175/356 cut-off events. [2024-05-12 10:35:06,339 INFO L125 PetriNetUnfolderBase]: For 137/140 co-relation queries the response was YES. [2024-05-12 10:35:06,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 856 conditions, 356 events. 175/356 cut-off events. For 137/140 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1652 event pairs, 19 based on Foata normal form. 6/360 useless extension candidates. Maximal degree in co-relation 838. Up to 250 conditions per place. [2024-05-12 10:35:06,344 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 36 selfloop transitions, 6 changer transitions 0/52 dead transitions. [2024-05-12 10:35:06,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 52 transitions, 234 flow [2024-05-12 10:35:06,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 10:35:06,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 10:35:06,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 107 transitions. [2024-05-12 10:35:06,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6114285714285714 [2024-05-12 10:35:06,350 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 118 flow. Second operand 5 states and 107 transitions. [2024-05-12 10:35:06,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 52 transitions, 234 flow [2024-05-12 10:35:06,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 52 transitions, 234 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-05-12 10:35:06,354 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 128 flow [2024-05-12 10:35:06,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=128, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2024-05-12 10:35:06,356 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 9 predicate places. [2024-05-12 10:35:06,356 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 128 flow [2024-05-12 10:35:06,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:35:06,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:35:06,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:35:06,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 10:35:06,358 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:35:06,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:35:06,358 INFO L85 PathProgramCache]: Analyzing trace with hash 242451970, now seen corresponding path program 1 times [2024-05-12 10:35:06,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:35:06,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830015890] [2024-05-12 10:35:06,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:35:06,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:35:06,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:35:06,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:35:06,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:35:06,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830015890] [2024-05-12 10:35:06,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830015890] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:35:06,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:35:06,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 10:35:06,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117682168] [2024-05-12 10:35:06,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:35:06,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 10:35:06,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:35:06,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 10:35:06,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-05-12 10:35:06,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-05-12 10:35:06,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 128 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 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) [2024-05-12 10:35:06,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:35:06,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-05-12 10:35:06,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:35:06,864 INFO L124 PetriNetUnfolderBase]: 173/349 cut-off events. [2024-05-12 10:35:06,864 INFO L125 PetriNetUnfolderBase]: For 235/235 co-relation queries the response was YES. [2024-05-12 10:35:06,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 906 conditions, 349 events. 173/349 cut-off events. For 235/235 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1598 event pairs, 35 based on Foata normal form. 1/349 useless extension candidates. Maximal degree in co-relation 885. Up to 285 conditions per place. [2024-05-12 10:35:06,867 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 34 selfloop transitions, 5 changer transitions 0/49 dead transitions. [2024-05-12 10:35:06,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 49 transitions, 243 flow [2024-05-12 10:35:06,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 10:35:06,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 10:35:06,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2024-05-12 10:35:06,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2024-05-12 10:35:06,873 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 128 flow. Second operand 4 states and 86 transitions. [2024-05-12 10:35:06,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 49 transitions, 243 flow [2024-05-12 10:35:06,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 49 transitions, 224 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-05-12 10:35:06,876 INFO L231 Difference]: Finished difference. Result has 47 places, 39 transitions, 146 flow [2024-05-12 10:35:06,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=146, PETRI_PLACES=47, PETRI_TRANSITIONS=39} [2024-05-12 10:35:06,877 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 10 predicate places. [2024-05-12 10:35:06,877 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 39 transitions, 146 flow [2024-05-12 10:35:06,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 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) [2024-05-12 10:35:06,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:35:06,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:35:06,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 10:35:06,878 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:35:06,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:35:06,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1802349263, now seen corresponding path program 1 times [2024-05-12 10:35:06,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:35:06,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623108393] [2024-05-12 10:35:06,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:35:06,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:35:06,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:35:07,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:35:07,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:35:07,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623108393] [2024-05-12 10:35:07,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623108393] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:35:07,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:35:07,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 10:35:07,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565203135] [2024-05-12 10:35:07,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:35:07,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 10:35:07,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:35:07,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 10:35:07,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-05-12 10:35:07,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-05-12 10:35:07,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 39 transitions, 146 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:35:07,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:35:07,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-05-12 10:35:07,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:35:07,375 INFO L124 PetriNetUnfolderBase]: 180/379 cut-off events. [2024-05-12 10:35:07,375 INFO L125 PetriNetUnfolderBase]: For 305/308 co-relation queries the response was YES. [2024-05-12 10:35:07,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 999 conditions, 379 events. 180/379 cut-off events. For 305/308 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1834 event pairs, 47 based on Foata normal form. 3/380 useless extension candidates. Maximal degree in co-relation 977. Up to 251 conditions per place. [2024-05-12 10:35:07,380 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 38 selfloop transitions, 11 changer transitions 0/59 dead transitions. [2024-05-12 10:35:07,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 59 transitions, 304 flow [2024-05-12 10:35:07,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 10:35:07,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 10:35:07,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 110 transitions. [2024-05-12 10:35:07,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-05-12 10:35:07,386 INFO L175 Difference]: Start difference. First operand has 47 places, 39 transitions, 146 flow. Second operand 5 states and 110 transitions. [2024-05-12 10:35:07,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 59 transitions, 304 flow [2024-05-12 10:35:07,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 59 transitions, 304 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-05-12 10:35:07,393 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 193 flow [2024-05-12 10:35:07,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=193, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2024-05-12 10:35:07,395 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 15 predicate places. [2024-05-12 10:35:07,396 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 193 flow [2024-05-12 10:35:07,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:35:07,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:35:07,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:35:07,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 10:35:07,396 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:35:07,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:35:07,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1577995617, now seen corresponding path program 1 times [2024-05-12 10:35:07,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:35:07,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088642611] [2024-05-12 10:35:07,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:35:07,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:35:07,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:35:07,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:35:07,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:35:07,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088642611] [2024-05-12 10:35:07,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088642611] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:35:07,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:35:07,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 10:35:07,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993405455] [2024-05-12 10:35:07,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:35:07,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 10:35:07,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:35:07,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 10:35:07,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-05-12 10:35:07,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-05-12 10:35:07,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 193 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:35:07,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:35:07,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-05-12 10:35:07,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:35:07,915 INFO L124 PetriNetUnfolderBase]: 187/390 cut-off events. [2024-05-12 10:35:07,915 INFO L125 PetriNetUnfolderBase]: For 510/513 co-relation queries the response was YES. [2024-05-12 10:35:07,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1130 conditions, 390 events. 187/390 cut-off events. For 510/513 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1883 event pairs, 46 based on Foata normal form. 3/391 useless extension candidates. Maximal degree in co-relation 1105. Up to 276 conditions per place. [2024-05-12 10:35:07,918 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 35 selfloop transitions, 9 changer transitions 0/54 dead transitions. [2024-05-12 10:35:07,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 54 transitions, 309 flow [2024-05-12 10:35:07,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 10:35:07,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 10:35:07,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2024-05-12 10:35:07,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-05-12 10:35:07,920 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 193 flow. Second operand 4 states and 88 transitions. [2024-05-12 10:35:07,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 54 transitions, 309 flow [2024-05-12 10:35:07,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 54 transitions, 300 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-05-12 10:35:07,924 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 222 flow [2024-05-12 10:35:07,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2024-05-12 10:35:07,926 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 18 predicate places. [2024-05-12 10:35:07,927 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 222 flow [2024-05-12 10:35:07,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:35:07,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:35:07,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:35:07,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 10:35:07,929 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:35:07,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:35:07,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1577995431, now seen corresponding path program 2 times [2024-05-12 10:35:07,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:35:07,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025007491] [2024-05-12 10:35:07,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:35:07,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:35:07,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:35:08,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:35:08,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:35:08,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025007491] [2024-05-12 10:35:08,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025007491] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:35:08,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:35:08,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 10:35:08,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376035366] [2024-05-12 10:35:08,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:35:08,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 10:35:08,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:35:08,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 10:35:08,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-05-12 10:35:08,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-05-12 10:35:08,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 222 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:35:08,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:35:08,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-05-12 10:35:08,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:35:08,420 INFO L124 PetriNetUnfolderBase]: 185/387 cut-off events. [2024-05-12 10:35:08,420 INFO L125 PetriNetUnfolderBase]: For 648/651 co-relation queries the response was YES. [2024-05-12 10:35:08,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1211 conditions, 387 events. 185/387 cut-off events. For 648/651 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1871 event pairs, 46 based on Foata normal form. 3/388 useless extension candidates. Maximal degree in co-relation 1184. Up to 267 conditions per place. [2024-05-12 10:35:08,423 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 38 selfloop transitions, 9 changer transitions 0/57 dead transitions. [2024-05-12 10:35:08,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 344 flow [2024-05-12 10:35:08,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 10:35:08,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 10:35:08,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-05-12 10:35:08,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-05-12 10:35:08,425 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 222 flow. Second operand 4 states and 91 transitions. [2024-05-12 10:35:08,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 344 flow [2024-05-12 10:35:08,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 57 transitions, 324 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-05-12 10:35:08,428 INFO L231 Difference]: Finished difference. Result has 57 places, 45 transitions, 228 flow [2024-05-12 10:35:08,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=228, PETRI_PLACES=57, PETRI_TRANSITIONS=45} [2024-05-12 10:35:08,429 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 20 predicate places. [2024-05-12 10:35:08,429 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 45 transitions, 228 flow [2024-05-12 10:35:08,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:35:08,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:35:08,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:35:08,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 10:35:08,430 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:35:08,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:35:08,431 INFO L85 PathProgramCache]: Analyzing trace with hash 288201151, now seen corresponding path program 2 times [2024-05-12 10:35:08,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:35:08,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140718049] [2024-05-12 10:35:08,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:35:08,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:35:08,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:35:08,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:35:08,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:35:08,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140718049] [2024-05-12 10:35:08,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140718049] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:35:08,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:35:08,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 10:35:08,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256572943] [2024-05-12 10:35:08,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:35:08,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 10:35:08,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:35:08,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 10:35:08,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-05-12 10:35:08,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-05-12 10:35:08,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 228 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:35:08,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:35:08,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-05-12 10:35:08,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:35:08,840 INFO L124 PetriNetUnfolderBase]: 183/384 cut-off events. [2024-05-12 10:35:08,840 INFO L125 PetriNetUnfolderBase]: For 728/731 co-relation queries the response was YES. [2024-05-12 10:35:08,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1199 conditions, 384 events. 183/384 cut-off events. For 728/731 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1847 event pairs, 46 based on Foata normal form. 3/385 useless extension candidates. Maximal degree in co-relation 1171. Up to 263 conditions per place. [2024-05-12 10:35:08,844 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 38 selfloop transitions, 11 changer transitions 0/59 dead transitions. [2024-05-12 10:35:08,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 59 transitions, 362 flow [2024-05-12 10:35:08,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 10:35:08,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 10:35:08,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2024-05-12 10:35:08,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6057142857142858 [2024-05-12 10:35:08,845 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 228 flow. Second operand 5 states and 106 transitions. [2024-05-12 10:35:08,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 59 transitions, 362 flow [2024-05-12 10:35:08,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 59 transitions, 344 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-05-12 10:35:08,848 INFO L231 Difference]: Finished difference. Result has 59 places, 47 transitions, 251 flow [2024-05-12 10:35:08,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=251, PETRI_PLACES=59, PETRI_TRANSITIONS=47} [2024-05-12 10:35:08,849 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 22 predicate places. [2024-05-12 10:35:08,849 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 47 transitions, 251 flow [2024-05-12 10:35:08,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:35:08,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:35:08,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:35:08,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 10:35:08,850 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:35:08,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:35:08,851 INFO L85 PathProgramCache]: Analyzing trace with hash 288210079, now seen corresponding path program 1 times [2024-05-12 10:35:08,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:35:08,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903640922] [2024-05-12 10:35:08,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:35:08,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:35:08,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:35:09,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:35:09,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:35:09,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903640922] [2024-05-12 10:35:09,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903640922] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:35:09,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:35:09,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 10:35:09,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481467437] [2024-05-12 10:35:09,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:35:09,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 10:35:09,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:35:09,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 10:35:09,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-05-12 10:35:09,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-05-12 10:35:09,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 251 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:35:09,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:35:09,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-05-12 10:35:09,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:35:09,310 INFO L124 PetriNetUnfolderBase]: 180/376 cut-off events. [2024-05-12 10:35:09,311 INFO L125 PetriNetUnfolderBase]: For 807/807 co-relation queries the response was YES. [2024-05-12 10:35:09,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1224 conditions, 376 events. 180/376 cut-off events. For 807/807 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1802 event pairs, 70 based on Foata normal form. 2/374 useless extension candidates. Maximal degree in co-relation 1195. Up to 282 conditions per place. [2024-05-12 10:35:09,318 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 45 selfloop transitions, 6 changer transitions 0/61 dead transitions. [2024-05-12 10:35:09,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 61 transitions, 385 flow [2024-05-12 10:35:09,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 10:35:09,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 10:35:09,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 103 transitions. [2024-05-12 10:35:09,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5885714285714285 [2024-05-12 10:35:09,320 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 251 flow. Second operand 5 states and 103 transitions. [2024-05-12 10:35:09,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 61 transitions, 385 flow [2024-05-12 10:35:09,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 61 transitions, 360 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-05-12 10:35:09,324 INFO L231 Difference]: Finished difference. Result has 61 places, 47 transitions, 242 flow [2024-05-12 10:35:09,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=242, PETRI_PLACES=61, PETRI_TRANSITIONS=47} [2024-05-12 10:35:09,325 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 24 predicate places. [2024-05-12 10:35:09,325 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 47 transitions, 242 flow [2024-05-12 10:35:09,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:35:09,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:35:09,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:35:09,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-05-12 10:35:09,326 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:35:09,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:35:09,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1839803947, now seen corresponding path program 1 times [2024-05-12 10:35:09,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:35:09,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114263144] [2024-05-12 10:35:09,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:35:09,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:35:09,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:35:09,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:35:09,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:35:09,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114263144] [2024-05-12 10:35:09,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114263144] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:35:09,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:35:09,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:35:09,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415242751] [2024-05-12 10:35:09,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:35:09,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:35:09,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:35:09,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:35:09,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:35:09,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-05-12 10:35:09,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 47 transitions, 242 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 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) [2024-05-12 10:35:09,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:35:09,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-05-12 10:35:09,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:35:09,887 INFO L124 PetriNetUnfolderBase]: 196/410 cut-off events. [2024-05-12 10:35:09,887 INFO L125 PetriNetUnfolderBase]: For 916/919 co-relation queries the response was YES. [2024-05-12 10:35:09,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1329 conditions, 410 events. 196/410 cut-off events. For 916/919 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2019 event pairs, 44 based on Foata normal form. 3/411 useless extension candidates. Maximal degree in co-relation 1299. Up to 244 conditions per place. [2024-05-12 10:35:09,891 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 47 selfloop transitions, 19 changer transitions 0/76 dead transitions. [2024-05-12 10:35:09,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 76 transitions, 468 flow [2024-05-12 10:35:09,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:35:09,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:35:09,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 165 transitions. [2024-05-12 10:35:09,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5892857142857143 [2024-05-12 10:35:09,892 INFO L175 Difference]: Start difference. First operand has 61 places, 47 transitions, 242 flow. Second operand 8 states and 165 transitions. [2024-05-12 10:35:09,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 76 transitions, 468 flow [2024-05-12 10:35:09,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 76 transitions, 452 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-05-12 10:35:09,897 INFO L231 Difference]: Finished difference. Result has 65 places, 51 transitions, 297 flow [2024-05-12 10:35:09,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=297, PETRI_PLACES=65, PETRI_TRANSITIONS=51} [2024-05-12 10:35:09,899 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 28 predicate places. [2024-05-12 10:35:09,899 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 51 transitions, 297 flow [2024-05-12 10:35:09,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 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) [2024-05-12 10:35:09,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:35:09,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:35:09,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-05-12 10:35:09,900 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:35:09,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:35:09,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1673224311, now seen corresponding path program 2 times [2024-05-12 10:35:09,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:35:09,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887217024] [2024-05-12 10:35:09,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:35:09,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:35:09,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:35:10,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:35:10,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:35:10,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887217024] [2024-05-12 10:35:10,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887217024] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:35:10,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:35:10,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:35:10,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682631152] [2024-05-12 10:35:10,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:35:10,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:35:10,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:35:10,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:35:10,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:35:10,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-05-12 10:35:10,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 51 transitions, 297 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 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) [2024-05-12 10:35:10,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:35:10,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-05-12 10:35:10,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:35:10,426 INFO L124 PetriNetUnfolderBase]: 203/425 cut-off events. [2024-05-12 10:35:10,426 INFO L125 PetriNetUnfolderBase]: For 1240/1243 co-relation queries the response was YES. [2024-05-12 10:35:10,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1457 conditions, 425 events. 203/425 cut-off events. For 1240/1243 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2129 event pairs, 44 based on Foata normal form. 3/426 useless extension candidates. Maximal degree in co-relation 1427. Up to 266 conditions per place. [2024-05-12 10:35:10,430 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 48 selfloop transitions, 17 changer transitions 0/75 dead transitions. [2024-05-12 10:35:10,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 75 transitions, 509 flow [2024-05-12 10:35:10,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:35:10,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:35:10,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-05-12 10:35:10,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-05-12 10:35:10,432 INFO L175 Difference]: Start difference. First operand has 65 places, 51 transitions, 297 flow. Second operand 7 states and 147 transitions. [2024-05-12 10:35:10,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 75 transitions, 509 flow [2024-05-12 10:35:10,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 75 transitions, 477 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-05-12 10:35:10,439 INFO L231 Difference]: Finished difference. Result has 68 places, 53 transitions, 320 flow [2024-05-12 10:35:10,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=320, PETRI_PLACES=68, PETRI_TRANSITIONS=53} [2024-05-12 10:35:10,440 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 31 predicate places. [2024-05-12 10:35:10,440 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 53 transitions, 320 flow [2024-05-12 10:35:10,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 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) [2024-05-12 10:35:10,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:35:10,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:35:10,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-05-12 10:35:10,442 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:35:10,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:35:10,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1673218731, now seen corresponding path program 3 times [2024-05-12 10:35:10,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:35:10,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087094647] [2024-05-12 10:35:10,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:35:10,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:35:10,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:35:10,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:35:10,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:35:10,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087094647] [2024-05-12 10:35:10,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087094647] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:35:10,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:35:10,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:35:10,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37939358] [2024-05-12 10:35:10,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:35:10,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:35:10,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:35:10,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:35:10,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:35:10,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-05-12 10:35:10,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 53 transitions, 320 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 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) [2024-05-12 10:35:10,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:35:10,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-05-12 10:35:10,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:35:10,923 INFO L124 PetriNetUnfolderBase]: 201/422 cut-off events. [2024-05-12 10:35:10,924 INFO L125 PetriNetUnfolderBase]: For 1339/1342 co-relation queries the response was YES. [2024-05-12 10:35:10,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1482 conditions, 422 events. 201/422 cut-off events. For 1339/1342 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2128 event pairs, 44 based on Foata normal form. 3/422 useless extension candidates. Maximal degree in co-relation 1450. Up to 264 conditions per place. [2024-05-12 10:35:10,928 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 44 selfloop transitions, 17 changer transitions 0/71 dead transitions. [2024-05-12 10:35:10,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 71 transitions, 482 flow [2024-05-12 10:35:10,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:35:10,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:35:10,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2024-05-12 10:35:10,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2024-05-12 10:35:10,930 INFO L175 Difference]: Start difference. First operand has 68 places, 53 transitions, 320 flow. Second operand 6 states and 129 transitions. [2024-05-12 10:35:10,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 71 transitions, 482 flow [2024-05-12 10:35:10,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 71 transitions, 436 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-05-12 10:35:10,935 INFO L231 Difference]: Finished difference. Result has 69 places, 53 transitions, 313 flow [2024-05-12 10:35:10,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=313, PETRI_PLACES=69, PETRI_TRANSITIONS=53} [2024-05-12 10:35:10,937 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 32 predicate places. [2024-05-12 10:35:10,938 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 53 transitions, 313 flow [2024-05-12 10:35:10,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 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) [2024-05-12 10:35:10,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:35:10,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:35:10,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-05-12 10:35:10,939 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:35:10,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:35:10,940 INFO L85 PathProgramCache]: Analyzing trace with hash 344301529, now seen corresponding path program 4 times [2024-05-12 10:35:10,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:35:10,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259398854] [2024-05-12 10:35:10,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:35:10,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:35:10,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:35:11,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:35:11,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:35:11,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259398854] [2024-05-12 10:35:11,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259398854] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:35:11,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:35:11,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:35:11,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299529880] [2024-05-12 10:35:11,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:35:11,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:35:11,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:35:11,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:35:11,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:35:11,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-05-12 10:35:11,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 53 transitions, 313 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 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) [2024-05-12 10:35:11,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:35:11,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-05-12 10:35:11,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:35:11,480 INFO L124 PetriNetUnfolderBase]: 199/419 cut-off events. [2024-05-12 10:35:11,481 INFO L125 PetriNetUnfolderBase]: For 1378/1381 co-relation queries the response was YES. [2024-05-12 10:35:11,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1457 conditions, 419 events. 199/419 cut-off events. For 1378/1381 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2099 event pairs, 44 based on Foata normal form. 3/419 useless extension candidates. Maximal degree in co-relation 1424. Up to 247 conditions per place. [2024-05-12 10:35:11,485 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 48 selfloop transitions, 21 changer transitions 0/79 dead transitions. [2024-05-12 10:35:11,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 79 transitions, 519 flow [2024-05-12 10:35:11,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:35:11,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:35:11,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 164 transitions. [2024-05-12 10:35:11,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5857142857142857 [2024-05-12 10:35:11,486 INFO L175 Difference]: Start difference. First operand has 69 places, 53 transitions, 313 flow. Second operand 8 states and 164 transitions. [2024-05-12 10:35:11,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 79 transitions, 519 flow [2024-05-12 10:35:11,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 79 transitions, 485 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-05-12 10:35:11,492 INFO L231 Difference]: Finished difference. Result has 72 places, 55 transitions, 346 flow [2024-05-12 10:35:11,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=346, PETRI_PLACES=72, PETRI_TRANSITIONS=55} [2024-05-12 10:35:11,493 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 35 predicate places. [2024-05-12 10:35:11,493 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 55 transitions, 346 flow [2024-05-12 10:35:11,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 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) [2024-05-12 10:35:11,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:35:11,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:35:11,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-05-12 10:35:11,494 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:35:11,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:35:11,495 INFO L85 PathProgramCache]: Analyzing trace with hash 991940838, now seen corresponding path program 1 times [2024-05-12 10:35:11,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:35:11,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731359951] [2024-05-12 10:35:11,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:35:11,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:35:11,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:35:11,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:35:11,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:35:11,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731359951] [2024-05-12 10:35:11,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731359951] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:35:11,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:35:11,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:35:11,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751141552] [2024-05-12 10:35:11,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:35:11,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:35:11,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:35:11,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:35:11,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:35:11,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-05-12 10:35:11,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 55 transitions, 346 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 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) [2024-05-12 10:35:11,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:35:11,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-05-12 10:35:11,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:35:11,969 INFO L124 PetriNetUnfolderBase]: 209/437 cut-off events. [2024-05-12 10:35:11,969 INFO L125 PetriNetUnfolderBase]: For 1673/1676 co-relation queries the response was YES. [2024-05-12 10:35:11,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1566 conditions, 437 events. 209/437 cut-off events. For 1673/1676 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2225 event pairs, 23 based on Foata normal form. 4/437 useless extension candidates. Maximal degree in co-relation 1532. Up to 235 conditions per place. [2024-05-12 10:35:11,974 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 54 selfloop transitions, 13 changer transitions 0/77 dead transitions. [2024-05-12 10:35:11,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 77 transitions, 556 flow [2024-05-12 10:35:11,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:35:11,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:35:11,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-05-12 10:35:11,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6047619047619047 [2024-05-12 10:35:11,975 INFO L175 Difference]: Start difference. First operand has 72 places, 55 transitions, 346 flow. Second operand 6 states and 127 transitions. [2024-05-12 10:35:11,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 77 transitions, 556 flow [2024-05-12 10:35:11,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 77 transitions, 505 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-05-12 10:35:11,981 INFO L231 Difference]: Finished difference. Result has 72 places, 56 transitions, 331 flow [2024-05-12 10:35:11,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=331, PETRI_PLACES=72, PETRI_TRANSITIONS=56} [2024-05-12 10:35:11,982 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 35 predicate places. [2024-05-12 10:35:11,982 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 56 transitions, 331 flow [2024-05-12 10:35:11,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 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) [2024-05-12 10:35:11,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:35:11,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:35:11,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-05-12 10:35:11,983 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:35:11,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:35:11,984 INFO L85 PathProgramCache]: Analyzing trace with hash 994797798, now seen corresponding path program 2 times [2024-05-12 10:35:11,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:35:11,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564560092] [2024-05-12 10:35:11,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:35:11,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:35:11,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:35:12,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:35:12,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:35:12,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564560092] [2024-05-12 10:35:12,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564560092] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:35:12,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:35:12,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:35:12,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106980150] [2024-05-12 10:35:12,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:35:12,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:35:12,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:35:12,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:35:12,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:35:12,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-05-12 10:35:12,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 56 transitions, 331 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 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) [2024-05-12 10:35:12,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:35:12,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-05-12 10:35:12,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:35:12,494 INFO L124 PetriNetUnfolderBase]: 219/455 cut-off events. [2024-05-12 10:35:12,494 INFO L125 PetriNetUnfolderBase]: For 1799/1802 co-relation queries the response was YES. [2024-05-12 10:35:12,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1609 conditions, 455 events. 219/455 cut-off events. For 1799/1802 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2352 event pairs, 42 based on Foata normal form. 4/455 useless extension candidates. Maximal degree in co-relation 1574. Up to 304 conditions per place. [2024-05-12 10:35:12,499 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 54 selfloop transitions, 12 changer transitions 0/76 dead transitions. [2024-05-12 10:35:12,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 76 transitions, 513 flow [2024-05-12 10:35:12,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:35:12,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:35:12,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-05-12 10:35:12,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6047619047619047 [2024-05-12 10:35:12,500 INFO L175 Difference]: Start difference. First operand has 72 places, 56 transitions, 331 flow. Second operand 6 states and 127 transitions. [2024-05-12 10:35:12,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 76 transitions, 513 flow [2024-05-12 10:35:12,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 76 transitions, 485 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-05-12 10:35:12,512 INFO L231 Difference]: Finished difference. Result has 75 places, 57 transitions, 341 flow [2024-05-12 10:35:12,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=341, PETRI_PLACES=75, PETRI_TRANSITIONS=57} [2024-05-12 10:35:12,514 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 38 predicate places. [2024-05-12 10:35:12,514 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 57 transitions, 341 flow [2024-05-12 10:35:12,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 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) [2024-05-12 10:35:12,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:35:12,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:35:12,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-05-12 10:35:12,515 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:35:12,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:35:12,516 INFO L85 PathProgramCache]: Analyzing trace with hash 330168806, now seen corresponding path program 3 times [2024-05-12 10:35:12,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:35:12,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610566047] [2024-05-12 10:35:12,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:35:12,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:35:12,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:35:12,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:35:12,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:35:12,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610566047] [2024-05-12 10:35:12,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610566047] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:35:12,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:35:12,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:35:12,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441296065] [2024-05-12 10:35:12,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:35:12,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:35:12,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:35:12,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:35:12,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:35:12,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-05-12 10:35:12,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 57 transitions, 341 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 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) [2024-05-12 10:35:12,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:35:12,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-05-12 10:35:12,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:35:13,024 INFO L124 PetriNetUnfolderBase]: 216/450 cut-off events. [2024-05-12 10:35:13,024 INFO L125 PetriNetUnfolderBase]: For 1804/1807 co-relation queries the response was YES. [2024-05-12 10:35:13,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1565 conditions, 450 events. 216/450 cut-off events. For 1804/1807 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2325 event pairs, 22 based on Foata normal form. 4/450 useless extension candidates. Maximal degree in co-relation 1529. Up to 280 conditions per place. [2024-05-12 10:35:13,028 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 52 selfloop transitions, 11 changer transitions 0/73 dead transitions. [2024-05-12 10:35:13,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 73 transitions, 503 flow [2024-05-12 10:35:13,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 10:35:13,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 10:35:13,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2024-05-12 10:35:13,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6228571428571429 [2024-05-12 10:35:13,030 INFO L175 Difference]: Start difference. First operand has 75 places, 57 transitions, 341 flow. Second operand 5 states and 109 transitions. [2024-05-12 10:35:13,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 73 transitions, 503 flow [2024-05-12 10:35:13,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 73 transitions, 467 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-05-12 10:35:13,036 INFO L231 Difference]: Finished difference. Result has 75 places, 57 transitions, 333 flow [2024-05-12 10:35:13,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=333, PETRI_PLACES=75, PETRI_TRANSITIONS=57} [2024-05-12 10:35:13,037 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 38 predicate places. [2024-05-12 10:35:13,037 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 57 transitions, 333 flow [2024-05-12 10:35:13,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 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) [2024-05-12 10:35:13,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:35:13,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:35:13,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-05-12 10:35:13,038 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:35:13,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:35:13,039 INFO L85 PathProgramCache]: Analyzing trace with hash 330353504, now seen corresponding path program 1 times [2024-05-12 10:35:13,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:35:13,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670869896] [2024-05-12 10:35:13,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:35:13,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:35:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:35:13,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:35:13,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:35:13,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670869896] [2024-05-12 10:35:13,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670869896] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:35:13,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:35:13,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:35:13,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653168833] [2024-05-12 10:35:13,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:35:13,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:35:13,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:35:13,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:35:13,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:35:13,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-05-12 10:35:13,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 57 transitions, 333 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 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) [2024-05-12 10:35:13,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:35:13,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-05-12 10:35:13,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:35:13,519 INFO L124 PetriNetUnfolderBase]: 226/468 cut-off events. [2024-05-12 10:35:13,520 INFO L125 PetriNetUnfolderBase]: For 2033/2036 co-relation queries the response was YES. [2024-05-12 10:35:13,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1598 conditions, 468 events. 226/468 cut-off events. For 2033/2036 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2427 event pairs, 41 based on Foata normal form. 4/468 useless extension candidates. Maximal degree in co-relation 1562. Up to 316 conditions per place. [2024-05-12 10:35:13,523 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 50 selfloop transitions, 11 changer transitions 0/71 dead transitions. [2024-05-12 10:35:13,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 71 transitions, 491 flow [2024-05-12 10:35:13,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 10:35:13,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 10:35:13,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2024-05-12 10:35:13,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6057142857142858 [2024-05-12 10:35:13,525 INFO L175 Difference]: Start difference. First operand has 75 places, 57 transitions, 333 flow. Second operand 5 states and 106 transitions. [2024-05-12 10:35:13,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 71 transitions, 491 flow [2024-05-12 10:35:13,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 71 transitions, 461 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-05-12 10:35:13,532 INFO L231 Difference]: Finished difference. Result has 75 places, 58 transitions, 341 flow [2024-05-12 10:35:13,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=341, PETRI_PLACES=75, PETRI_TRANSITIONS=58} [2024-05-12 10:35:13,533 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 38 predicate places. [2024-05-12 10:35:13,533 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 58 transitions, 341 flow [2024-05-12 10:35:13,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 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) [2024-05-12 10:35:13,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:35:13,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:35:13,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-05-12 10:35:13,535 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:35:13,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:35:13,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1229480872, now seen corresponding path program 2 times [2024-05-12 10:35:13,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:35:13,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552747576] [2024-05-12 10:35:13,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:35:13,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:35:13,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:35:13,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:35:13,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:35:13,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552747576] [2024-05-12 10:35:13,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552747576] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:35:13,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:35:13,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:35:13,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246484784] [2024-05-12 10:35:13,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:35:13,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:35:13,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:35:13,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:35:13,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:35:13,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-05-12 10:35:13,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 58 transitions, 341 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 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) [2024-05-12 10:35:13,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:35:13,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-05-12 10:35:13,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:35:13,993 INFO L124 PetriNetUnfolderBase]: 236/486 cut-off events. [2024-05-12 10:35:13,993 INFO L125 PetriNetUnfolderBase]: For 2056/2059 co-relation queries the response was YES. [2024-05-12 10:35:13,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1669 conditions, 486 events. 236/486 cut-off events. For 2056/2059 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2578 event pairs, 45 based on Foata normal form. 4/486 useless extension candidates. Maximal degree in co-relation 1633. Up to 341 conditions per place. [2024-05-12 10:35:13,997 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 53 selfloop transitions, 12 changer transitions 0/75 dead transitions. [2024-05-12 10:35:13,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 75 transitions, 515 flow [2024-05-12 10:35:13,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:35:13,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:35:13,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2024-05-12 10:35:13,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5904761904761905 [2024-05-12 10:35:13,999 INFO L175 Difference]: Start difference. First operand has 75 places, 58 transitions, 341 flow. Second operand 6 states and 124 transitions. [2024-05-12 10:35:13,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 75 transitions, 515 flow [2024-05-12 10:35:14,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 75 transitions, 487 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-05-12 10:35:14,005 INFO L231 Difference]: Finished difference. Result has 77 places, 59 transitions, 353 flow [2024-05-12 10:35:14,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=353, PETRI_PLACES=77, PETRI_TRANSITIONS=59} [2024-05-12 10:35:14,006 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 40 predicate places. [2024-05-12 10:35:14,006 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 59 transitions, 353 flow [2024-05-12 10:35:14,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 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) [2024-05-12 10:35:14,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:35:14,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:35:14,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-05-12 10:35:14,007 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:35:14,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:35:14,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1862014192, now seen corresponding path program 3 times [2024-05-12 10:35:14,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:35:14,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4070927] [2024-05-12 10:35:14,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:35:14,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:35:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:35:14,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:35:14,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:35:14,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4070927] [2024-05-12 10:35:14,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4070927] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:35:14,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:35:14,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:35:14,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651647648] [2024-05-12 10:35:14,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:35:14,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:35:14,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:35:14,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:35:14,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:35:14,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-05-12 10:35:14,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 59 transitions, 353 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 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) [2024-05-12 10:35:14,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:35:14,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-05-12 10:35:14,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:35:14,459 INFO L124 PetriNetUnfolderBase]: 233/481 cut-off events. [2024-05-12 10:35:14,460 INFO L125 PetriNetUnfolderBase]: For 1782/1785 co-relation queries the response was YES. [2024-05-12 10:35:14,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1613 conditions, 481 events. 233/481 cut-off events. For 1782/1785 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2534 event pairs, 40 based on Foata normal form. 4/481 useless extension candidates. Maximal degree in co-relation 1577. Up to 290 conditions per place. [2024-05-12 10:35:14,464 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 52 selfloop transitions, 14 changer transitions 0/76 dead transitions. [2024-05-12 10:35:14,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 76 transitions, 521 flow [2024-05-12 10:35:14,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:35:14,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:35:14,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 123 transitions. [2024-05-12 10:35:14,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5857142857142857 [2024-05-12 10:35:14,465 INFO L175 Difference]: Start difference. First operand has 77 places, 59 transitions, 353 flow. Second operand 6 states and 123 transitions. [2024-05-12 10:35:14,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 76 transitions, 521 flow [2024-05-12 10:35:14,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 76 transitions, 491 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-05-12 10:35:14,473 INFO L231 Difference]: Finished difference. Result has 79 places, 59 transitions, 355 flow [2024-05-12 10:35:14,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=355, PETRI_PLACES=79, PETRI_TRANSITIONS=59} [2024-05-12 10:35:14,474 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 42 predicate places. [2024-05-12 10:35:14,474 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 59 transitions, 355 flow [2024-05-12 10:35:14,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 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) [2024-05-12 10:35:14,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:35:14,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:35:14,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-05-12 10:35:14,475 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:35:14,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:35:14,476 INFO L85 PathProgramCache]: Analyzing trace with hash 194139850, now seen corresponding path program 1 times [2024-05-12 10:35:14,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:35:14,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136516509] [2024-05-12 10:35:14,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:35:14,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:35:14,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:35:14,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:35:14,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:35:14,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136516509] [2024-05-12 10:35:14,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136516509] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:35:14,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:35:14,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 10:35:14,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941505383] [2024-05-12 10:35:14,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:35:14,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 10:35:14,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:35:14,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 10:35:14,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 10:35:14,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 35 [2024-05-12 10:35:14,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 59 transitions, 355 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:35:14,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:35:14,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 35 [2024-05-12 10:35:14,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:35:14,639 INFO L124 PetriNetUnfolderBase]: 120/356 cut-off events. [2024-05-12 10:35:14,639 INFO L125 PetriNetUnfolderBase]: For 793/796 co-relation queries the response was YES. [2024-05-12 10:35:14,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 994 conditions, 356 events. 120/356 cut-off events. For 793/796 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1936 event pairs, 7 based on Foata normal form. 22/342 useless extension candidates. Maximal degree in co-relation 957. Up to 123 conditions per place. [2024-05-12 10:35:14,642 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 21 selfloop transitions, 16 changer transitions 1/68 dead transitions. [2024-05-12 10:35:14,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 68 transitions, 465 flow [2024-05-12 10:35:14,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 10:35:14,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 10:35:14,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2024-05-12 10:35:14,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2024-05-12 10:35:14,643 INFO L175 Difference]: Start difference. First operand has 79 places, 59 transitions, 355 flow. Second operand 4 states and 100 transitions. [2024-05-12 10:35:14,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 68 transitions, 465 flow [2024-05-12 10:35:14,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 68 transitions, 429 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-05-12 10:35:14,648 INFO L231 Difference]: Finished difference. Result has 80 places, 59 transitions, 385 flow [2024-05-12 10:35:14,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=385, PETRI_PLACES=80, PETRI_TRANSITIONS=59} [2024-05-12 10:35:14,649 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 43 predicate places. [2024-05-12 10:35:14,649 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 59 transitions, 385 flow [2024-05-12 10:35:14,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:35:14,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:35:14,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:35:14,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-05-12 10:35:14,650 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:35:14,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:35:14,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1953809460, now seen corresponding path program 1 times [2024-05-12 10:35:14,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:35:14,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832473243] [2024-05-12 10:35:14,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:35:14,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:35:14,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:35:14,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:35:14,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:35:14,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832473243] [2024-05-12 10:35:14,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832473243] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:35:14,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:35:14,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:35:14,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800590428] [2024-05-12 10:35:14,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:35:14,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:35:14,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:35:14,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:35:14,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:35:14,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-05-12 10:35:15,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 59 transitions, 385 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 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) [2024-05-12 10:35:15,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:35:15,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-05-12 10:35:15,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:35:15,146 INFO L124 PetriNetUnfolderBase]: 241/545 cut-off events. [2024-05-12 10:35:15,146 INFO L125 PetriNetUnfolderBase]: For 3495/3498 co-relation queries the response was YES. [2024-05-12 10:35:15,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1873 conditions, 545 events. 241/545 cut-off events. For 3495/3498 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3022 event pairs, 96 based on Foata normal form. 8/527 useless extension candidates. Maximal degree in co-relation 1834. Up to 171 conditions per place. [2024-05-12 10:35:15,150 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 55 selfloop transitions, 22 changer transitions 0/87 dead transitions. [2024-05-12 10:35:15,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 87 transitions, 665 flow [2024-05-12 10:35:15,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:35:15,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:35:15,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-05-12 10:35:15,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5650793650793651 [2024-05-12 10:35:15,152 INFO L175 Difference]: Start difference. First operand has 80 places, 59 transitions, 385 flow. Second operand 9 states and 178 transitions. [2024-05-12 10:35:15,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 87 transitions, 665 flow [2024-05-12 10:35:15,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 87 transitions, 602 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-05-12 10:35:15,162 INFO L231 Difference]: Finished difference. Result has 85 places, 59 transitions, 381 flow [2024-05-12 10:35:15,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=381, PETRI_PLACES=85, PETRI_TRANSITIONS=59} [2024-05-12 10:35:15,162 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 48 predicate places. [2024-05-12 10:35:15,162 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 59 transitions, 381 flow [2024-05-12 10:35:15,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 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) [2024-05-12 10:35:15,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:35:15,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:35:15,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-05-12 10:35:15,165 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:35:15,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:35:15,165 INFO L85 PathProgramCache]: Analyzing trace with hash 773961292, now seen corresponding path program 2 times [2024-05-12 10:35:15,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:35:15,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325371731] [2024-05-12 10:35:15,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:35:15,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:35:15,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:35:15,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:35:15,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:35:15,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325371731] [2024-05-12 10:35:15,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325371731] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:35:15,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:35:15,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:35:15,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913278482] [2024-05-12 10:35:15,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:35:15,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:35:15,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:35:15,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:35:15,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:35:15,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-05-12 10:35:15,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 59 transitions, 381 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 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) [2024-05-12 10:35:15,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:35:15,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-05-12 10:35:15,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:35:15,706 INFO L124 PetriNetUnfolderBase]: 305/700 cut-off events. [2024-05-12 10:35:15,706 INFO L125 PetriNetUnfolderBase]: For 5022/5025 co-relation queries the response was YES. [2024-05-12 10:35:15,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2346 conditions, 700 events. 305/700 cut-off events. For 5022/5025 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4230 event pairs, 158 based on Foata normal form. 8/673 useless extension candidates. Maximal degree in co-relation 2308. Up to 377 conditions per place. [2024-05-12 10:35:15,711 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 53 selfloop transitions, 22 changer transitions 0/85 dead transitions. [2024-05-12 10:35:15,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 85 transitions, 643 flow [2024-05-12 10:35:15,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:35:15,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:35:15,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-05-12 10:35:15,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5514285714285714 [2024-05-12 10:35:15,714 INFO L175 Difference]: Start difference. First operand has 85 places, 59 transitions, 381 flow. Second operand 10 states and 193 transitions. [2024-05-12 10:35:15,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 85 transitions, 643 flow [2024-05-12 10:35:15,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 85 transitions, 600 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-05-12 10:35:15,728 INFO L231 Difference]: Finished difference. Result has 88 places, 59 transitions, 385 flow [2024-05-12 10:35:15,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=385, PETRI_PLACES=88, PETRI_TRANSITIONS=59} [2024-05-12 10:35:15,729 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 51 predicate places. [2024-05-12 10:35:15,729 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 59 transitions, 385 flow [2024-05-12 10:35:15,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 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) [2024-05-12 10:35:15,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:35:15,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:35:15,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-05-12 10:35:15,730 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:35:15,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:35:15,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1925155654, now seen corresponding path program 3 times [2024-05-12 10:35:15,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:35:15,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587112370] [2024-05-12 10:35:15,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:35:15,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:35:15,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:35:16,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:35:16,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:35:16,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587112370] [2024-05-12 10:35:16,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587112370] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:35:16,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:35:16,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:35:16,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733971119] [2024-05-12 10:35:16,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:35:16,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:35:16,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:35:16,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:35:16,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:35:16,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-05-12 10:35:16,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 59 transitions, 385 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 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) [2024-05-12 10:35:16,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:35:16,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-05-12 10:35:16,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:35:16,214 INFO L124 PetriNetUnfolderBase]: 253/575 cut-off events. [2024-05-12 10:35:16,215 INFO L125 PetriNetUnfolderBase]: For 3277/3280 co-relation queries the response was YES. [2024-05-12 10:35:16,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1776 conditions, 575 events. 253/575 cut-off events. For 3277/3280 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3242 event pairs, 132 based on Foata normal form. 10/554 useless extension candidates. Maximal degree in co-relation 1737. Up to 361 conditions per place. [2024-05-12 10:35:16,220 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 47 selfloop transitions, 21 changer transitions 0/78 dead transitions. [2024-05-12 10:35:16,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 78 transitions, 577 flow [2024-05-12 10:35:16,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:35:16,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:35:16,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-05-12 10:35:16,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546031746031746 [2024-05-12 10:35:16,223 INFO L175 Difference]: Start difference. First operand has 88 places, 59 transitions, 385 flow. Second operand 9 states and 172 transitions. [2024-05-12 10:35:16,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 78 transitions, 577 flow [2024-05-12 10:35:16,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 78 transitions, 534 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-05-12 10:35:16,232 INFO L231 Difference]: Finished difference. Result has 89 places, 59 transitions, 388 flow [2024-05-12 10:35:16,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=388, PETRI_PLACES=89, PETRI_TRANSITIONS=59} [2024-05-12 10:35:16,233 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 52 predicate places. [2024-05-12 10:35:16,233 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 59 transitions, 388 flow [2024-05-12 10:35:16,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 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) [2024-05-12 10:35:16,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:35:16,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:35:16,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-05-12 10:35:16,234 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:35:16,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:35:16,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1645446890, now seen corresponding path program 4 times [2024-05-12 10:35:16,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:35:16,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050885372] [2024-05-12 10:35:16,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:35:16,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:35:16,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:35:16,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:35:16,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:35:16,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050885372] [2024-05-12 10:35:16,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050885372] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:35:16,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:35:16,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:35:16,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883891483] [2024-05-12 10:35:16,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:35:16,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:35:16,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:35:16,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:35:16,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:35:16,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-05-12 10:35:16,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 59 transitions, 388 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 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) [2024-05-12 10:35:16,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:35:16,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-05-12 10:35:16,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:35:16,742 INFO L124 PetriNetUnfolderBase]: 285/652 cut-off events. [2024-05-12 10:35:16,742 INFO L125 PetriNetUnfolderBase]: For 3658/3661 co-relation queries the response was YES. [2024-05-12 10:35:16,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1982 conditions, 652 events. 285/652 cut-off events. For 3658/3661 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3878 event pairs, 158 based on Foata normal form. 10/626 useless extension candidates. Maximal degree in co-relation 1942. Up to 431 conditions per place. [2024-05-12 10:35:16,747 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 49 selfloop transitions, 17 changer transitions 0/76 dead transitions. [2024-05-12 10:35:16,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 76 transitions, 572 flow [2024-05-12 10:35:16,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:35:16,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:35:16,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-05-12 10:35:16,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5755102040816327 [2024-05-12 10:35:16,748 INFO L175 Difference]: Start difference. First operand has 89 places, 59 transitions, 388 flow. Second operand 7 states and 141 transitions. [2024-05-12 10:35:16,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 76 transitions, 572 flow [2024-05-12 10:35:16,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 76 transitions, 532 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-05-12 10:35:16,756 INFO L231 Difference]: Finished difference. Result has 89 places, 59 transitions, 386 flow [2024-05-12 10:35:16,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=386, PETRI_PLACES=89, PETRI_TRANSITIONS=59} [2024-05-12 10:35:16,757 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 52 predicate places. [2024-05-12 10:35:16,757 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 59 transitions, 386 flow [2024-05-12 10:35:16,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 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) [2024-05-12 10:35:16,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:35:16,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:35:16,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-05-12 10:35:16,758 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:35:16,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:35:16,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1645299020, now seen corresponding path program 5 times [2024-05-12 10:35:16,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:35:16,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254108200] [2024-05-12 10:35:16,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:35:16,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:35:16,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:35:17,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:35:17,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:35:17,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254108200] [2024-05-12 10:35:17,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254108200] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:35:17,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:35:17,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:35:17,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262422009] [2024-05-12 10:35:17,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:35:17,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:35:17,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:35:17,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:35:17,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:35:17,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-05-12 10:35:17,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 59 transitions, 386 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 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) [2024-05-12 10:35:17,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:35:17,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-05-12 10:35:17,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:35:17,298 INFO L124 PetriNetUnfolderBase]: 349/798 cut-off events. [2024-05-12 10:35:17,299 INFO L125 PetriNetUnfolderBase]: For 5376/5379 co-relation queries the response was YES. [2024-05-12 10:35:17,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2523 conditions, 798 events. 349/798 cut-off events. For 5376/5379 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5123 event pairs, 154 based on Foata normal form. 8/765 useless extension candidates. Maximal degree in co-relation 2482. Up to 383 conditions per place. [2024-05-12 10:35:17,305 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 54 selfloop transitions, 18 changer transitions 0/82 dead transitions. [2024-05-12 10:35:17,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 82 transitions, 642 flow [2024-05-12 10:35:17,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:35:17,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:35:17,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 146 transitions. [2024-05-12 10:35:17,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5959183673469388 [2024-05-12 10:35:17,307 INFO L175 Difference]: Start difference. First operand has 89 places, 59 transitions, 386 flow. Second operand 7 states and 146 transitions. [2024-05-12 10:35:17,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 82 transitions, 642 flow [2024-05-12 10:35:17,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 82 transitions, 610 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-05-12 10:35:17,324 INFO L231 Difference]: Finished difference. Result has 91 places, 59 transitions, 393 flow [2024-05-12 10:35:17,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=393, PETRI_PLACES=91, PETRI_TRANSITIONS=59} [2024-05-12 10:35:17,325 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 54 predicate places. [2024-05-12 10:35:17,325 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 59 transitions, 393 flow [2024-05-12 10:35:17,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 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) [2024-05-12 10:35:17,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:35:17,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:35:17,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-05-12 10:35:17,326 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:35:17,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:35:17,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1650809270, now seen corresponding path program 6 times [2024-05-12 10:35:17,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:35:17,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493453062] [2024-05-12 10:35:17,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:35:17,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:35:17,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:35:17,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:35:17,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:35:17,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493453062] [2024-05-12 10:35:17,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493453062] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:35:17,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:35:17,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:35:17,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433284934] [2024-05-12 10:35:17,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:35:17,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:35:17,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:35:17,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:35:17,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:35:17,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-05-12 10:35:17,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 59 transitions, 393 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 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) [2024-05-12 10:35:17,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:35:17,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-05-12 10:35:17,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:35:17,874 INFO L124 PetriNetUnfolderBase]: 339/780 cut-off events. [2024-05-12 10:35:17,874 INFO L125 PetriNetUnfolderBase]: For 4651/4654 co-relation queries the response was YES. [2024-05-12 10:35:17,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2340 conditions, 780 events. 339/780 cut-off events. For 4651/4654 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4959 event pairs, 202 based on Foata normal form. 10/745 useless extension candidates. Maximal degree in co-relation 2298. Up to 541 conditions per place. [2024-05-12 10:35:17,881 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 50 selfloop transitions, 17 changer transitions 0/77 dead transitions. [2024-05-12 10:35:17,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 77 transitions, 581 flow [2024-05-12 10:35:17,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:35:17,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:35:17,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-05-12 10:35:17,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5571428571428572 [2024-05-12 10:35:17,882 INFO L175 Difference]: Start difference. First operand has 91 places, 59 transitions, 393 flow. Second operand 8 states and 156 transitions. [2024-05-12 10:35:17,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 77 transitions, 581 flow [2024-05-12 10:35:17,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 77 transitions, 546 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-05-12 10:35:17,894 INFO L231 Difference]: Finished difference. Result has 94 places, 59 transitions, 396 flow [2024-05-12 10:35:17,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=396, PETRI_PLACES=94, PETRI_TRANSITIONS=59} [2024-05-12 10:35:17,895 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 57 predicate places. [2024-05-12 10:35:17,895 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 59 transitions, 396 flow [2024-05-12 10:35:17,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 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) [2024-05-12 10:35:17,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:35:17,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:35:17,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-05-12 10:35:17,897 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:35:17,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:35:17,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1651024472, now seen corresponding path program 1 times [2024-05-12 10:35:17,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:35:17,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957802948] [2024-05-12 10:35:17,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:35:17,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:35:17,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:35:18,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:35:18,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:35:18,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957802948] [2024-05-12 10:35:18,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957802948] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:35:18,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:35:18,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:35:18,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726609901] [2024-05-12 10:35:18,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:35:18,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:35:18,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:35:18,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:35:18,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:35:18,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-05-12 10:35:18,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 59 transitions, 396 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 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) [2024-05-12 10:35:18,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:35:18,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-05-12 10:35:18,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:35:18,404 INFO L124 PetriNetUnfolderBase]: 361/839 cut-off events. [2024-05-12 10:35:18,404 INFO L125 PetriNetUnfolderBase]: For 4469/4472 co-relation queries the response was YES. [2024-05-12 10:35:18,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2472 conditions, 839 events. 361/839 cut-off events. For 4469/4472 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5507 event pairs, 188 based on Foata normal form. 8/802 useless extension candidates. Maximal degree in co-relation 2429. Up to 441 conditions per place. [2024-05-12 10:35:18,410 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 53 selfloop transitions, 19 changer transitions 0/82 dead transitions. [2024-05-12 10:35:18,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 82 transitions, 610 flow [2024-05-12 10:35:18,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:35:18,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:35:18,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-05-12 10:35:18,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-05-12 10:35:18,412 INFO L175 Difference]: Start difference. First operand has 94 places, 59 transitions, 396 flow. Second operand 8 states and 160 transitions. [2024-05-12 10:35:18,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 82 transitions, 610 flow [2024-05-12 10:35:18,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 82 transitions, 578 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-05-12 10:35:18,424 INFO L231 Difference]: Finished difference. Result has 96 places, 59 transitions, 405 flow [2024-05-12 10:35:18,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=405, PETRI_PLACES=96, PETRI_TRANSITIONS=59} [2024-05-12 10:35:18,424 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 59 predicate places. [2024-05-12 10:35:18,425 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 59 transitions, 405 flow [2024-05-12 10:35:18,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 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) [2024-05-12 10:35:18,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:35:18,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:35:18,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-05-12 10:35:18,425 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:35:18,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:35:18,426 INFO L85 PathProgramCache]: Analyzing trace with hash 161302680, now seen corresponding path program 7 times [2024-05-12 10:35:18,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:35:18,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943270242] [2024-05-12 10:35:18,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:35:18,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:35:18,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:35:18,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:35:18,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:35:18,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943270242] [2024-05-12 10:35:18,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943270242] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:35:18,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:35:18,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:35:18,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173519247] [2024-05-12 10:35:18,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:35:18,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:35:18,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:35:18,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:35:18,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:35:18,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-05-12 10:35:18,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 59 transitions, 405 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 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) [2024-05-12 10:35:18,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:35:18,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-05-12 10:35:18,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:35:18,939 INFO L124 PetriNetUnfolderBase]: 380/880 cut-off events. [2024-05-12 10:35:18,939 INFO L125 PetriNetUnfolderBase]: For 4926/4929 co-relation queries the response was YES. [2024-05-12 10:35:18,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2553 conditions, 880 events. 380/880 cut-off events. For 4926/4929 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5890 event pairs, 243 based on Foata normal form. 10/838 useless extension candidates. Maximal degree in co-relation 2509. Up to 622 conditions per place. [2024-05-12 10:35:18,950 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 47 selfloop transitions, 21 changer transitions 0/78 dead transitions. [2024-05-12 10:35:18,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 78 transitions, 597 flow [2024-05-12 10:35:18,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:35:18,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:35:18,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-05-12 10:35:18,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546031746031746 [2024-05-12 10:35:18,951 INFO L175 Difference]: Start difference. First operand has 96 places, 59 transitions, 405 flow. Second operand 9 states and 172 transitions. [2024-05-12 10:35:18,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 78 transitions, 597 flow [2024-05-12 10:35:18,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 78 transitions, 560 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-05-12 10:35:18,965 INFO L231 Difference]: Finished difference. Result has 99 places, 59 transitions, 414 flow [2024-05-12 10:35:18,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=414, PETRI_PLACES=99, PETRI_TRANSITIONS=59} [2024-05-12 10:35:18,968 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 62 predicate places. [2024-05-12 10:35:18,969 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 59 transitions, 414 flow [2024-05-12 10:35:18,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 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) [2024-05-12 10:35:18,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:35:18,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:35:18,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-05-12 10:35:18,969 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:35:18,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:35:18,970 INFO L85 PathProgramCache]: Analyzing trace with hash 418018392, now seen corresponding path program 2 times [2024-05-12 10:35:18,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:35:18,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485754139] [2024-05-12 10:35:18,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:35:18,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:35:18,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:35:19,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:35:19,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:35:19,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485754139] [2024-05-12 10:35:19,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485754139] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:35:19,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:35:19,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:35:19,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070022861] [2024-05-12 10:35:19,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:35:19,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:35:19,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:35:19,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:35:19,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:35:19,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-05-12 10:35:19,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 59 transitions, 414 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 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) [2024-05-12 10:35:19,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:35:19,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-05-12 10:35:19,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:35:19,486 INFO L124 PetriNetUnfolderBase]: 402/954 cut-off events. [2024-05-12 10:35:19,487 INFO L125 PetriNetUnfolderBase]: For 4623/4626 co-relation queries the response was YES. [2024-05-12 10:35:19,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2704 conditions, 954 events. 402/954 cut-off events. For 4623/4626 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 6537 event pairs, 251 based on Foata normal form. 8/913 useless extension candidates. Maximal degree in co-relation 2659. Up to 602 conditions per place. [2024-05-12 10:35:19,494 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 52 selfloop transitions, 22 changer transitions 0/84 dead transitions. [2024-05-12 10:35:19,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 84 transitions, 636 flow [2024-05-12 10:35:19,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:35:19,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:35:19,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-05-12 10:35:19,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5485714285714286 [2024-05-12 10:35:19,495 INFO L175 Difference]: Start difference. First operand has 99 places, 59 transitions, 414 flow. Second operand 10 states and 192 transitions. [2024-05-12 10:35:19,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 84 transitions, 636 flow [2024-05-12 10:35:19,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 84 transitions, 596 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-05-12 10:35:19,511 INFO L231 Difference]: Finished difference. Result has 102 places, 59 transitions, 421 flow [2024-05-12 10:35:19,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=421, PETRI_PLACES=102, PETRI_TRANSITIONS=59} [2024-05-12 10:35:19,513 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 65 predicate places. [2024-05-12 10:35:19,513 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 59 transitions, 421 flow [2024-05-12 10:35:19,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 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) [2024-05-12 10:35:19,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:35:19,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:35:19,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-05-12 10:35:19,514 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:35:19,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:35:19,514 INFO L85 PathProgramCache]: Analyzing trace with hash 427215162, now seen corresponding path program 3 times [2024-05-12 10:35:19,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:35:19,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615664459] [2024-05-12 10:35:19,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:35:19,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:35:19,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:35:19,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:35:19,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:35:19,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615664459] [2024-05-12 10:35:19,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615664459] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:35:19,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:35:19,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:35:19,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465462892] [2024-05-12 10:35:19,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:35:19,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:35:19,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:35:19,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:35:19,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:35:19,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-05-12 10:35:19,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 59 transitions, 421 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 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) [2024-05-12 10:35:19,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:35:19,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-05-12 10:35:19,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:35:20,029 INFO L124 PetriNetUnfolderBase]: 395/921 cut-off events. [2024-05-12 10:35:20,029 INFO L125 PetriNetUnfolderBase]: For 3135/3138 co-relation queries the response was YES. [2024-05-12 10:35:20,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2521 conditions, 921 events. 395/921 cut-off events. For 3135/3138 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 6245 event pairs, 228 based on Foata normal form. 8/879 useless extension candidates. Maximal degree in co-relation 2475. Up to 348 conditions per place. [2024-05-12 10:35:20,035 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 53 selfloop transitions, 22 changer transitions 0/85 dead transitions. [2024-05-12 10:35:20,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 85 transitions, 597 flow [2024-05-12 10:35:20,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:35:20,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:35:20,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-05-12 10:35:20,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5587301587301587 [2024-05-12 10:35:20,037 INFO L175 Difference]: Start difference. First operand has 102 places, 59 transitions, 421 flow. Second operand 9 states and 176 transitions. [2024-05-12 10:35:20,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 85 transitions, 597 flow [2024-05-12 10:35:20,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 85 transitions, 486 flow, removed 5 selfloop flow, removed 30 redundant places. [2024-05-12 10:35:20,043 INFO L231 Difference]: Finished difference. Result has 79 places, 58 transitions, 308 flow [2024-05-12 10:35:20,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=308, PETRI_PLACES=79, PETRI_TRANSITIONS=58} [2024-05-12 10:35:20,044 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 42 predicate places. [2024-05-12 10:35:20,044 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 58 transitions, 308 flow [2024-05-12 10:35:20,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 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) [2024-05-12 10:35:20,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:35:20,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:35:20,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-05-12 10:35:20,045 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:35:20,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:35:20,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1753232546, now seen corresponding path program 1 times [2024-05-12 10:35:20,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:35:20,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92244974] [2024-05-12 10:35:20,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:35:20,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:35:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:35:20,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:35:20,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:35:20,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92244974] [2024-05-12 10:35:20,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92244974] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:35:20,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:35:20,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 10:35:20,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781820814] [2024-05-12 10:35:20,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:35:20,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 10:35:20,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:35:20,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 10:35:20,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-05-12 10:35:20,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 35 [2024-05-12 10:35:20,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 58 transitions, 308 flow. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:35:20,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:35:20,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 35 [2024-05-12 10:35:20,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:35:20,255 INFO L124 PetriNetUnfolderBase]: 292/841 cut-off events. [2024-05-12 10:35:20,255 INFO L125 PetriNetUnfolderBase]: For 518/519 co-relation queries the response was YES. [2024-05-12 10:35:20,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1887 conditions, 841 events. 292/841 cut-off events. For 518/519 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 5616 event pairs, 14 based on Foata normal form. 69/876 useless extension candidates. Maximal degree in co-relation 1863. Up to 244 conditions per place. [2024-05-12 10:35:20,258 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 20 selfloop transitions, 18 changer transitions 1/68 dead transitions. [2024-05-12 10:35:20,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 68 transitions, 409 flow [2024-05-12 10:35:20,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 10:35:20,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 10:35:20,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-05-12 10:35:20,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.68 [2024-05-12 10:35:20,260 INFO L175 Difference]: Start difference. First operand has 79 places, 58 transitions, 308 flow. Second operand 5 states and 119 transitions. [2024-05-12 10:35:20,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 68 transitions, 409 flow [2024-05-12 10:35:20,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 68 transitions, 366 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-05-12 10:35:20,264 INFO L231 Difference]: Finished difference. Result has 78 places, 58 transitions, 324 flow [2024-05-12 10:35:20,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=324, PETRI_PLACES=78, PETRI_TRANSITIONS=58} [2024-05-12 10:35:20,264 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 41 predicate places. [2024-05-12 10:35:20,264 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 58 transitions, 324 flow [2024-05-12 10:35:20,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:35:20,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:35:20,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:35:20,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-05-12 10:35:20,265 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:35:20,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:35:20,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1013965456, now seen corresponding path program 1 times [2024-05-12 10:35:20,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:35:20,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429508576] [2024-05-12 10:35:20,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:35:20,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:35:20,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:35:20,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:35:20,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:35:20,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429508576] [2024-05-12 10:35:20,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429508576] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:35:20,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:35:20,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 10:35:20,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845590497] [2024-05-12 10:35:20,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:35:20,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:35:20,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:35:20,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:35:20,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:35:20,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-05-12 10:35:20,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 58 transitions, 324 flow. Second operand has 8 states, 8 states have (on average 15.0) internal successors, (120), 8 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) [2024-05-12 10:35:20,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:35:20,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-05-12 10:35:20,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:35:20,640 INFO L124 PetriNetUnfolderBase]: 304/812 cut-off events. [2024-05-12 10:35:20,640 INFO L125 PetriNetUnfolderBase]: For 682/682 co-relation queries the response was YES. [2024-05-12 10:35:20,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2101 conditions, 812 events. 304/812 cut-off events. For 682/682 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5164 event pairs, 97 based on Foata normal form. 28/778 useless extension candidates. Maximal degree in co-relation 2075. Up to 236 conditions per place. [2024-05-12 10:35:20,643 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 19 selfloop transitions, 4 changer transitions 42/81 dead transitions. [2024-05-12 10:35:20,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 81 transitions, 482 flow [2024-05-12 10:35:20,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:35:20,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:35:20,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-05-12 10:35:20,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2024-05-12 10:35:20,645 INFO L175 Difference]: Start difference. First operand has 78 places, 58 transitions, 324 flow. Second operand 9 states and 161 transitions. [2024-05-12 10:35:20,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 81 transitions, 482 flow [2024-05-12 10:35:20,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 81 transitions, 394 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-05-12 10:35:20,650 INFO L231 Difference]: Finished difference. Result has 81 places, 35 transitions, 134 flow [2024-05-12 10:35:20,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=134, PETRI_PLACES=81, PETRI_TRANSITIONS=35} [2024-05-12 10:35:20,651 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 44 predicate places. [2024-05-12 10:35:20,651 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 35 transitions, 134 flow [2024-05-12 10:35:20,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.0) internal successors, (120), 8 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) [2024-05-12 10:35:20,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:35:20,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:35:20,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-05-12 10:35:20,652 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:35:20,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:35:20,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1443708334, now seen corresponding path program 2 times [2024-05-12 10:35:20,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:35:20,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738558780] [2024-05-12 10:35:20,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:35:20,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:35:20,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:35:20,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:35:20,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:35:20,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738558780] [2024-05-12 10:35:20,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738558780] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:35:20,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:35:20,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 10:35:20,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283309693] [2024-05-12 10:35:20,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:35:20,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 10:35:20,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:35:20,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 10:35:20,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 10:35:20,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-05-12 10:35:20,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 35 transitions, 134 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 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) [2024-05-12 10:35:20,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:35:20,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-05-12 10:35:20,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:35:20,896 INFO L124 PetriNetUnfolderBase]: 95/249 cut-off events. [2024-05-12 10:35:20,896 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2024-05-12 10:35:20,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 559 conditions, 249 events. 95/249 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1076 event pairs, 26 based on Foata normal form. 12/236 useless extension candidates. Maximal degree in co-relation 549. Up to 104 conditions per place. [2024-05-12 10:35:20,897 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 0 selfloop transitions, 0 changer transitions 40/40 dead transitions. [2024-05-12 10:35:20,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 40 transitions, 196 flow [2024-05-12 10:35:20,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:35:20,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:35:20,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-05-12 10:35:20,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47346938775510206 [2024-05-12 10:35:20,899 INFO L175 Difference]: Start difference. First operand has 81 places, 35 transitions, 134 flow. Second operand 7 states and 116 transitions. [2024-05-12 10:35:20,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 40 transitions, 196 flow [2024-05-12 10:35:20,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 40 transitions, 161 flow, removed 2 selfloop flow, removed 15 redundant places. [2024-05-12 10:35:20,900 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2024-05-12 10:35:20,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2024-05-12 10:35:20,901 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 12 predicate places. [2024-05-12 10:35:20,901 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2024-05-12 10:35:20,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 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) [2024-05-12 10:35:20,904 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 5 remaining) [2024-05-12 10:35:20,904 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 5 remaining) [2024-05-12 10:35:20,904 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-05-12 10:35:20,904 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2024-05-12 10:35:20,905 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2024-05-12 10:35:20,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-05-12 10:35:20,905 INFO L445 BasicCegarLoop]: Path program histogram: [7, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:35:20,908 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-05-12 10:35:20,908 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-05-12 10:35:20,912 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-05-12 10:35:20,912 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-05-12 10:35:20,914 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.05 10:35:20 BasicIcfg [2024-05-12 10:35:20,914 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-05-12 10:35:20,915 INFO L158 Benchmark]: Toolchain (without parser) took 18141.23ms. Allocated memory was 165.7MB in the beginning and 450.9MB in the end (delta: 285.2MB). Free memory was 117.7MB in the beginning and 312.5MB in the end (delta: -194.8MB). Peak memory consumption was 89.8MB. Max. memory is 16.1GB. [2024-05-12 10:35:20,915 INFO L158 Benchmark]: Witness Parser took 0.18ms. Allocated memory is still 100.7MB. Free memory is still 71.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 10:35:20,915 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 100.7MB. Free memory is still 66.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 10:35:20,915 INFO L158 Benchmark]: CACSL2BoogieTranslator took 582.10ms. Allocated memory is still 165.7MB. Free memory was 117.7MB in the beginning and 89.8MB in the end (delta: 27.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-05-12 10:35:20,916 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.51ms. Allocated memory is still 165.7MB. Free memory was 89.8MB in the beginning and 87.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-05-12 10:35:20,916 INFO L158 Benchmark]: Boogie Preprocessor took 81.62ms. Allocated memory is still 165.7MB. Free memory was 86.9MB in the beginning and 84.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-05-12 10:35:20,916 INFO L158 Benchmark]: RCFGBuilder took 574.54ms. Allocated memory is still 165.7MB. Free memory was 84.8MB in the beginning and 105.1MB in the end (delta: -20.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-05-12 10:35:20,917 INFO L158 Benchmark]: TraceAbstraction took 16817.71ms. Allocated memory was 165.7MB in the beginning and 450.9MB in the end (delta: 285.2MB). Free memory was 104.1MB in the beginning and 312.5MB in the end (delta: -208.4MB). Peak memory consumption was 79.7MB. Max. memory is 16.1GB. [2024-05-12 10:35:20,918 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.18ms. Allocated memory is still 100.7MB. Free memory is still 71.0MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.16ms. Allocated memory is still 100.7MB. Free memory is still 66.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 582.10ms. Allocated memory is still 165.7MB. Free memory was 117.7MB in the beginning and 89.8MB in the end (delta: 27.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.51ms. Allocated memory is still 165.7MB. Free memory was 89.8MB in the beginning and 87.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 81.62ms. Allocated memory is still 165.7MB. Free memory was 86.9MB in the beginning and 84.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 574.54ms. Allocated memory is still 165.7MB. Free memory was 84.8MB in the beginning and 105.1MB in the end (delta: -20.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 16817.71ms. Allocated memory was 165.7MB in the beginning and 450.9MB in the end (delta: 285.2MB). Free memory was 104.1MB in the beginning and 312.5MB in the end (delta: -208.4MB). Peak memory consumption was 79.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 763]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 764]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 51 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 16.7s, OverallIterations: 33, TraceHistogramMax: 1, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 6.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1842 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1509 mSDsluCounter, 459 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 311 mSDsCounter, 182 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5528 IncrementalHoareTripleChecker+Invalid, 5710 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 182 mSolverCounterUnsat, 148 mSDtfsCounter, 5528 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 241 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=421occurred in iteration=29, InterpolantAutomatonStates: 213, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 9.4s InterpolantComputationTime, 523 NumberOfCodeBlocks, 523 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 490 ConstructedInterpolants, 0 QuantifiedInterpolants, 4670 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 33 InterpolantComputations, 33 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-05-12 10:35:20,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE