./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix046.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/mix046.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f 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/mix046.oepc.i ./goblint.2024-05-21_14-57-05.files/protection/mix046.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-bcb38a6-m [2024-06-04 15:18:25,047 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 15:18:25,114 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 15:18:25,124 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 15:18:25,125 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 15:18:25,161 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 15:18:25,163 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 15:18:25,163 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 15:18:25,164 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 15:18:25,168 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 15:18:25,168 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 15:18:25,169 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 15:18:25,170 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 15:18:25,171 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 15:18:25,171 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 15:18:25,172 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 15:18:25,172 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 15:18:25,172 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 15:18:25,173 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 15:18:25,173 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 15:18:25,173 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 15:18:25,174 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 15:18:25,174 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 15:18:25,174 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 15:18:25,175 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 15:18:25,175 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 15:18:25,175 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 15:18:25,176 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 15:18:25,176 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 15:18:25,177 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 15:18:25,177 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 15:18:25,178 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 15:18:25,178 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 15:18:25,178 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 15:18:25,178 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 15:18:25,179 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 15:18:25,179 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 15:18:25,179 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 15:18:25,179 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 15:18:25,180 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 15:18:25,180 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 15:18:25,180 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 15:18:25,181 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 15:18:25,181 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 15:18:25,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 15:18:25,481 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 15:18:25,483 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 15:18:25,484 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 15:18:25,485 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 15:18:25,486 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix046.oepc.yml/witness.yml [2024-06-04 15:18:25,689 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 15:18:25,692 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 15:18:25,693 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix046.oepc.i [2024-06-04 15:18:26,876 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 15:18:27,126 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 15:18:27,127 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix046.oepc.i [2024-06-04 15:18:27,152 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1f6b5a84/827dea9505244222b994a5932c9b4269/FLAGd661db4c2 [2024-06-04 15:18:27,164 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1f6b5a84/827dea9505244222b994a5932c9b4269 [2024-06-04 15:18:27,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 15:18:27,166 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 15:18:27,169 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 15:18:27,169 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 15:18:27,174 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 15:18:27,175 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:18:25" (1/2) ... [2024-06-04 15:18:27,175 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cd1a253 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:18:27, skipping insertion in model container [2024-06-04 15:18:27,176 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:18:25" (1/2) ... [2024-06-04 15:18:27,177 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@35a2ee86 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:18:27, skipping insertion in model container [2024-06-04 15:18:27,177 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 03:18:27" (2/2) ... [2024-06-04 15:18:27,178 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cd1a253 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:18:27, skipping insertion in model container [2024-06-04 15:18:27,178 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 03:18:27" (2/2) ... [2024-06-04 15:18:27,180 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 15:18:27,374 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 15:18:27,375 INFO L97 edCorrectnessWitness]: Location invariant before [L872-L872] ((((((((((((((((((((((! multithreaded || ((0 <= b$w_buff1 && b$w_buff1 <= 1) && (b$w_buff1 == 0 || b$w_buff1 == 1))) && (! multithreaded || ((0 <= b$mem_tmp && b$mem_tmp <= 1) && (b$mem_tmp == 0 || b$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= b && b <= 1) && (b == 0 || b == 1)))) && (! multithreaded || ((0 <= b$w_buff0 && b$w_buff0 <= 1) && (b$w_buff0 == 0 || b$w_buff0 == 1)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || b$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || b$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || b$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || b$r_buff0_thd3 == (_Bool)0) [2024-06-04 15:18:27,375 INFO L97 edCorrectnessWitness]: Location invariant before [L876-L876] ((((((((((((((((((((((! multithreaded || ((0 <= b$w_buff1 && b$w_buff1 <= 1) && (b$w_buff1 == 0 || b$w_buff1 == 1))) && (! multithreaded || ((0 <= b$mem_tmp && b$mem_tmp <= 1) && (b$mem_tmp == 0 || b$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= b && b <= 1) && (b == 0 || b == 1)))) && (! multithreaded || ((0 <= b$w_buff0 && b$w_buff0 <= 1) && (b$w_buff0 == 0 || b$w_buff0 == 1)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || b$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || b$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || b$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || b$r_buff0_thd3 == (_Bool)0) [2024-06-04 15:18:27,375 INFO L97 edCorrectnessWitness]: Location invariant before [L874-L874] ((((((((((((((((((((((! multithreaded || ((0 <= b$w_buff1 && b$w_buff1 <= 1) && (b$w_buff1 == 0 || b$w_buff1 == 1))) && (! multithreaded || ((0 <= b$mem_tmp && b$mem_tmp <= 1) && (b$mem_tmp == 0 || b$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= b && b <= 1) && (b == 0 || b == 1)))) && (! multithreaded || ((0 <= b$w_buff0 && b$w_buff0 <= 1) && (b$w_buff0 == 0 || b$w_buff0 == 1)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || b$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || b$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || b$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || b$r_buff0_thd3 == (_Bool)0) [2024-06-04 15:18:27,375 INFO L97 edCorrectnessWitness]: Location invariant before [L877-L877] ((((((((((((((((((((((! multithreaded || ((0 <= b$w_buff1 && b$w_buff1 <= 1) && (b$w_buff1 == 0 || b$w_buff1 == 1))) && (! multithreaded || ((0 <= b$mem_tmp && b$mem_tmp <= 1) && (b$mem_tmp == 0 || b$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= b && b <= 1) && (b == 0 || b == 1)))) && (! multithreaded || ((0 <= b$w_buff0 && b$w_buff0 <= 1) && (b$w_buff0 == 0 || b$w_buff0 == 1)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || b$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || b$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || b$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || b$r_buff0_thd3 == (_Bool)0) [2024-06-04 15:18:27,376 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 15:18:27,376 INFO L106 edCorrectnessWitness]: ghost_update [L870-L870] multithreaded = 1; [2024-06-04 15:18:27,419 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 15:18:27,724 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 15:18:27,742 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-04 15:18:27,963 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 15:18:27,999 INFO L206 MainTranslator]: Completed translation [2024-06-04 15:18:28,000 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:18:28 WrapperNode [2024-06-04 15:18:28,000 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 15:18:28,001 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 15:18:28,002 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 15:18:28,002 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 15:18:28,008 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:18:28" (1/1) ... [2024-06-04 15:18:28,044 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:18:28" (1/1) ... [2024-06-04 15:18:28,091 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 139 [2024-06-04 15:18:28,094 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 15:18:28,095 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 15:18:28,095 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 15:18:28,096 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 15:18:28,113 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:18:28" (1/1) ... [2024-06-04 15:18:28,113 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:18:28" (1/1) ... [2024-06-04 15:18:28,133 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:18:28" (1/1) ... [2024-06-04 15:18:28,164 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-04 15:18:28,164 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:18:28" (1/1) ... [2024-06-04 15:18:28,165 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:18:28" (1/1) ... [2024-06-04 15:18:28,179 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:18:28" (1/1) ... [2024-06-04 15:18:28,188 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:18:28" (1/1) ... [2024-06-04 15:18:28,190 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:18:28" (1/1) ... [2024-06-04 15:18:28,198 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:18:28" (1/1) ... [2024-06-04 15:18:28,203 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 15:18:28,206 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 15:18:28,207 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 15:18:28,207 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 15:18:28,208 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:18:28" (1/1) ... [2024-06-04 15:18:28,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 15:18:28,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 15:18:28,241 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-04 15:18:28,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-04 15:18:28,279 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-04 15:18:28,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 15:18:28,280 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-04 15:18:28,280 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-04 15:18:28,280 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-04 15:18:28,280 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-04 15:18:28,281 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-04 15:18:28,281 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-04 15:18:28,281 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-04 15:18:28,281 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-04 15:18:28,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 15:18:28,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-04 15:18:28,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 15:18:28,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 15:18:28,284 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-04 15:18:28,448 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 15:18:28,450 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 15:18:28,865 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 15:18:28,865 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 15:18:29,087 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 15:18:29,088 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-04 15:18:29,089 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 03:18:29 BoogieIcfgContainer [2024-06-04 15:18:29,089 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 15:18:29,092 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 15:18:29,092 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 15:18:29,095 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 15:18:29,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:18:25" (1/4) ... [2024-06-04 15:18:29,096 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@321332df and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 03:18:29, skipping insertion in model container [2024-06-04 15:18:29,096 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 03:18:27" (2/4) ... [2024-06-04 15:18:29,097 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@321332df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 03:18:29, skipping insertion in model container [2024-06-04 15:18:29,097 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:18:28" (3/4) ... [2024-06-04 15:18:29,097 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@321332df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 03:18:29, skipping insertion in model container [2024-06-04 15:18:29,097 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 03:18:29" (4/4) ... [2024-06-04 15:18:29,099 INFO L112 eAbstractionObserver]: Analyzing ICFG mix046.oepc.i [2024-06-04 15:18:29,115 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 15:18:29,115 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-04 15:18:29,116 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 15:18:29,212 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-04 15:18:29,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 54 transitions, 124 flow [2024-06-04 15:18:29,302 INFO L124 PetriNetUnfolderBase]: 0/50 cut-off events. [2024-06-04 15:18:29,302 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 15:18:29,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 50 events. 0/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 87 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-04 15:18:29,304 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 54 transitions, 124 flow [2024-06-04 15:18:29,309 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 44 transitions, 100 flow [2024-06-04 15:18:29,321 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 15:18:29,328 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;@729528a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 15:18:29,329 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-04 15:18:29,334 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 15:18:29,334 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-04 15:18:29,334 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 15:18:29,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:18:29,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-04 15:18:29,336 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:18:29,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:18:29,342 INFO L85 PathProgramCache]: Analyzing trace with hash -302346635, now seen corresponding path program 1 times [2024-06-04 15:18:29,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:18:29,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689051764] [2024-06-04 15:18:29,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:18:29,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:18:29,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:18:30,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:18:30,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:18:30,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689051764] [2024-06-04 15:18:30,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689051764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:18:30,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:18:30,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-04 15:18:30,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616904374] [2024-06-04 15:18:30,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:18:30,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 15:18:30,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:18:30,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 15:18:30,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 15:18:30,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-04 15:18:30,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:30,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:18:30,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-04 15:18:30,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:18:33,433 INFO L124 PetriNetUnfolderBase]: 13283/18237 cut-off events. [2024-06-04 15:18:33,433 INFO L125 PetriNetUnfolderBase]: For 212/212 co-relation queries the response was YES. [2024-06-04 15:18:33,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36597 conditions, 18237 events. 13283/18237 cut-off events. For 212/212 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 98786 event pairs, 10314 based on Foata normal form. 1/17813 useless extension candidates. Maximal degree in co-relation 36581. Up to 17909 conditions per place. [2024-06-04 15:18:33,562 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 47 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-06-04 15:18:33,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 58 transitions, 241 flow [2024-06-04 15:18:33,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 15:18:33,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 15:18:33,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-06-04 15:18:33,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5864197530864198 [2024-06-04 15:18:33,576 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 100 flow. Second operand 3 states and 95 transitions. [2024-06-04 15:18:33,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 58 transitions, 241 flow [2024-06-04 15:18:33,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 58 transitions, 234 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-04 15:18:33,586 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 135 flow [2024-06-04 15:18:33,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-06-04 15:18:33,591 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -1 predicate places. [2024-06-04 15:18:33,591 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 135 flow [2024-06-04 15:18:33,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:33,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:18:33,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:18:33,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 15:18:33,593 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:18:33,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:18:33,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1502713620, now seen corresponding path program 1 times [2024-06-04 15:18:33,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:18:33,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981803582] [2024-06-04 15:18:33,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:18:33,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:18:33,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:18:34,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:18:34,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:18:34,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981803582] [2024-06-04 15:18:34,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981803582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:18:34,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:18:34,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 15:18:34,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326406913] [2024-06-04 15:18:34,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:18:34,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 15:18:34,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:18:34,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 15:18:34,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-04 15:18:34,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-04 15:18:34,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 135 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:34,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:18:34,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-04 15:18:34,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:18:36,972 INFO L124 PetriNetUnfolderBase]: 13273/18223 cut-off events. [2024-06-04 15:18:36,973 INFO L125 PetriNetUnfolderBase]: For 3276/3276 co-relation queries the response was YES. [2024-06-04 15:18:36,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41033 conditions, 18223 events. 13273/18223 cut-off events. For 3276/3276 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 98808 event pairs, 9230 based on Foata normal form. 4/18014 useless extension candidates. Maximal degree in co-relation 41018. Up to 17874 conditions per place. [2024-06-04 15:18:37,054 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 57 selfloop transitions, 9 changer transitions 0/72 dead transitions. [2024-06-04 15:18:37,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 72 transitions, 333 flow [2024-06-04 15:18:37,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 15:18:37,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 15:18:37,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-06-04 15:18:37,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5648148148148148 [2024-06-04 15:18:37,059 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 135 flow. Second operand 4 states and 122 transitions. [2024-06-04 15:18:37,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 72 transitions, 333 flow [2024-06-04 15:18:37,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 72 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-04 15:18:37,063 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 183 flow [2024-06-04 15:18:37,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=183, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2024-06-04 15:18:37,064 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 2 predicate places. [2024-06-04 15:18:37,065 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 183 flow [2024-06-04 15:18:37,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:37,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:18:37,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:18:37,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 15:18:37,069 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:18:37,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:18:37,079 INFO L85 PathProgramCache]: Analyzing trace with hash 998833075, now seen corresponding path program 1 times [2024-06-04 15:18:37,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:18:37,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078285380] [2024-06-04 15:18:37,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:18:37,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:18:37,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:18:38,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:18:38,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:18:38,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078285380] [2024-06-04 15:18:38,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078285380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:18:38,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:18:38,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 15:18:38,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206224675] [2024-06-04 15:18:38,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:18:38,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 15:18:38,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:18:38,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 15:18:38,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-04 15:18:38,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-04 15:18:38,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 183 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:38,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:18:38,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-04 15:18:38,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:18:41,143 INFO L124 PetriNetUnfolderBase]: 16097/22016 cut-off events. [2024-06-04 15:18:41,143 INFO L125 PetriNetUnfolderBase]: For 10815/10815 co-relation queries the response was YES. [2024-06-04 15:18:41,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54497 conditions, 22016 events. 16097/22016 cut-off events. For 10815/10815 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 118863 event pairs, 9531 based on Foata normal form. 4/21765 useless extension candidates. Maximal degree in co-relation 54480. Up to 21576 conditions per place. [2024-06-04 15:18:41,255 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 78 selfloop transitions, 17 changer transitions 0/100 dead transitions. [2024-06-04 15:18:41,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 100 transitions, 520 flow [2024-06-04 15:18:41,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:18:41,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:18:41,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 171 transitions. [2024-06-04 15:18:41,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-04 15:18:41,257 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 183 flow. Second operand 6 states and 171 transitions. [2024-06-04 15:18:41,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 100 transitions, 520 flow [2024-06-04 15:18:41,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 100 transitions, 492 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-04 15:18:41,262 INFO L231 Difference]: Finished difference. Result has 64 places, 60 transitions, 260 flow [2024-06-04 15:18:41,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=260, PETRI_PLACES=64, PETRI_TRANSITIONS=60} [2024-06-04 15:18:41,263 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 7 predicate places. [2024-06-04 15:18:41,263 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 60 transitions, 260 flow [2024-06-04 15:18:41,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:41,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:18:41,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:18:41,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-04 15:18:41,264 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:18:41,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:18:41,264 INFO L85 PathProgramCache]: Analyzing trace with hash 899056055, now seen corresponding path program 1 times [2024-06-04 15:18:41,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:18:41,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933891923] [2024-06-04 15:18:41,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:18:41,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:18:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:18:42,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:18:42,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:18:42,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933891923] [2024-06-04 15:18:42,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933891923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:18:42,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:18:42,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:18:42,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932987270] [2024-06-04 15:18:42,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:18:42,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:18:42,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:18:42,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:18:42,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:18:42,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-04 15:18:42,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 60 transitions, 260 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:42,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:18:42,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-04 15:18:42,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:18:44,905 INFO L124 PetriNetUnfolderBase]: 16081/21992 cut-off events. [2024-06-04 15:18:44,906 INFO L125 PetriNetUnfolderBase]: For 21935/21935 co-relation queries the response was YES. [2024-06-04 15:18:44,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60429 conditions, 21992 events. 16081/21992 cut-off events. For 21935/21935 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 118698 event pairs, 8286 based on Foata normal form. 8/21745 useless extension candidates. Maximal degree in co-relation 60410. Up to 21510 conditions per place. [2024-06-04 15:18:45,025 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 85 selfloop transitions, 20 changer transitions 0/110 dead transitions. [2024-06-04 15:18:45,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 110 transitions, 610 flow [2024-06-04 15:18:45,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:18:45,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:18:45,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 193 transitions. [2024-06-04 15:18:45,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5105820105820106 [2024-06-04 15:18:45,027 INFO L175 Difference]: Start difference. First operand has 64 places, 60 transitions, 260 flow. Second operand 7 states and 193 transitions. [2024-06-04 15:18:45,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 110 transitions, 610 flow [2024-06-04 15:18:45,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 110 transitions, 571 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-04 15:18:45,036 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 293 flow [2024-06-04 15:18:45,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=293, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2024-06-04 15:18:45,037 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 10 predicate places. [2024-06-04 15:18:45,037 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 293 flow [2024-06-04 15:18:45,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:45,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:18:45,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:18:45,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-04 15:18:45,038 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:18:45,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:18:45,038 INFO L85 PathProgramCache]: Analyzing trace with hash -249652142, now seen corresponding path program 1 times [2024-06-04 15:18:45,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:18:45,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777078659] [2024-06-04 15:18:45,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:18:45,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:18:45,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:18:45,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:18:45,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:18:45,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777078659] [2024-06-04 15:18:45,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777078659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:18:45,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:18:45,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 15:18:45,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684447159] [2024-06-04 15:18:45,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:18:45,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 15:18:45,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:18:45,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 15:18:45,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-04 15:18:46,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-04 15:18:46,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 293 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:46,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:18:46,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-04 15:18:46,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:18:48,645 INFO L124 PetriNetUnfolderBase]: 16072/21980 cut-off events. [2024-06-04 15:18:48,645 INFO L125 PetriNetUnfolderBase]: For 34236/34236 co-relation queries the response was YES. [2024-06-04 15:18:48,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64523 conditions, 21980 events. 16072/21980 cut-off events. For 34236/34236 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 118453 event pairs, 9029 based on Foata normal form. 3/21728 useless extension candidates. Maximal degree in co-relation 64503. Up to 21588 conditions per place. [2024-06-04 15:18:48,792 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 68 selfloop transitions, 10 changer transitions 0/83 dead transitions. [2024-06-04 15:18:48,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 83 transitions, 519 flow [2024-06-04 15:18:48,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 15:18:48,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 15:18:48,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-06-04 15:18:48,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44814814814814813 [2024-06-04 15:18:48,799 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 293 flow. Second operand 5 states and 121 transitions. [2024-06-04 15:18:48,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 83 transitions, 519 flow [2024-06-04 15:18:48,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 83 transitions, 465 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-04 15:18:48,813 INFO L231 Difference]: Finished difference. Result has 67 places, 66 transitions, 304 flow [2024-06-04 15:18:48,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=304, PETRI_PLACES=67, PETRI_TRANSITIONS=66} [2024-06-04 15:18:48,817 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 10 predicate places. [2024-06-04 15:18:48,817 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 66 transitions, 304 flow [2024-06-04 15:18:48,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:48,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:18:48,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:18:48,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-04 15:18:48,818 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:18:48,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:18:48,819 INFO L85 PathProgramCache]: Analyzing trace with hash 850720236, now seen corresponding path program 1 times [2024-06-04 15:18:48,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:18:48,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527803019] [2024-06-04 15:18:48,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:18:48,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:18:48,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:18:49,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:18:49,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:18:49,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527803019] [2024-06-04 15:18:49,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527803019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:18:49,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:18:49,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:18:49,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665271711] [2024-06-04 15:18:49,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:18:49,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:18:49,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:18:49,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:18:49,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:18:50,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-04 15:18:50,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 66 transitions, 304 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:50,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:18:50,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-04 15:18:50,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:18:52,373 INFO L124 PetriNetUnfolderBase]: 16096/22080 cut-off events. [2024-06-04 15:18:52,373 INFO L125 PetriNetUnfolderBase]: For 48221/48221 co-relation queries the response was YES. [2024-06-04 15:18:52,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69542 conditions, 22080 events. 16096/22080 cut-off events. For 48221/48221 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 119370 event pairs, 8595 based on Foata normal form. 10/21871 useless extension candidates. Maximal degree in co-relation 69520. Up to 21510 conditions per place. [2024-06-04 15:18:52,486 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 83 selfloop transitions, 22 changer transitions 0/110 dead transitions. [2024-06-04 15:18:52,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 110 transitions, 718 flow [2024-06-04 15:18:52,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:18:52,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:18:52,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-06-04 15:18:52,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-04 15:18:52,488 INFO L175 Difference]: Start difference. First operand has 67 places, 66 transitions, 304 flow. Second operand 6 states and 153 transitions. [2024-06-04 15:18:52,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 110 transitions, 718 flow [2024-06-04 15:18:52,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 110 transitions, 685 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-04 15:18:52,497 INFO L231 Difference]: Finished difference. Result has 72 places, 80 transitions, 451 flow [2024-06-04 15:18:52,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=451, PETRI_PLACES=72, PETRI_TRANSITIONS=80} [2024-06-04 15:18:52,498 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 15 predicate places. [2024-06-04 15:18:52,498 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 80 transitions, 451 flow [2024-06-04 15:18:52,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:52,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:18:52,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:18:52,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-04 15:18:52,499 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:18:52,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:18:52,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1454928711, now seen corresponding path program 1 times [2024-06-04 15:18:52,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:18:52,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370816435] [2024-06-04 15:18:52,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:18:52,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:18:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:18:53,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:18:53,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:18:53,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370816435] [2024-06-04 15:18:53,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370816435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:18:53,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:18:53,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:18:53,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211506111] [2024-06-04 15:18:53,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:18:53,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:18:53,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:18:53,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:18:53,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:18:53,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-04 15:18:53,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 80 transitions, 451 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:53,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:18:53,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-04 15:18:53,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:18:56,052 INFO L124 PetriNetUnfolderBase]: 16118/22118 cut-off events. [2024-06-04 15:18:56,053 INFO L125 PetriNetUnfolderBase]: For 71642/71652 co-relation queries the response was YES. [2024-06-04 15:18:56,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77590 conditions, 22118 events. 16118/22118 cut-off events. For 71642/71652 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 119674 event pairs, 8621 based on Foata normal form. 11/21913 useless extension candidates. Maximal degree in co-relation 77565. Up to 21596 conditions per place. [2024-06-04 15:18:56,184 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 92 selfloop transitions, 21 changer transitions 0/118 dead transitions. [2024-06-04 15:18:56,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 118 transitions, 865 flow [2024-06-04 15:18:56,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:18:56,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:18:56,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-06-04 15:18:56,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4660493827160494 [2024-06-04 15:18:56,186 INFO L175 Difference]: Start difference. First operand has 72 places, 80 transitions, 451 flow. Second operand 6 states and 151 transitions. [2024-06-04 15:18:56,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 118 transitions, 865 flow [2024-06-04 15:18:56,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 118 transitions, 839 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-06-04 15:18:56,209 INFO L231 Difference]: Finished difference. Result has 77 places, 88 transitions, 562 flow [2024-06-04 15:18:56,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=562, PETRI_PLACES=77, PETRI_TRANSITIONS=88} [2024-06-04 15:18:56,210 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 20 predicate places. [2024-06-04 15:18:56,210 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 88 transitions, 562 flow [2024-06-04 15:18:56,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:56,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:18:56,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:18:56,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-04 15:18:56,211 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:18:56,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:18:56,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1461392211, now seen corresponding path program 2 times [2024-06-04 15:18:56,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:18:56,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533267424] [2024-06-04 15:18:56,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:18:56,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:18:56,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:18:57,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:18:57,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:18:57,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533267424] [2024-06-04 15:18:57,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533267424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:18:57,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:18:57,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:18:57,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537801285] [2024-06-04 15:18:57,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:18:57,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:18:57,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:18:57,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:18:57,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:18:57,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-04 15:18:57,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 88 transitions, 562 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:57,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:18:57,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-04 15:18:57,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:18:59,529 INFO L124 PetriNetUnfolderBase]: 16109/22104 cut-off events. [2024-06-04 15:18:59,529 INFO L125 PetriNetUnfolderBase]: For 92897/92897 co-relation queries the response was YES. [2024-06-04 15:18:59,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82465 conditions, 22104 events. 16109/22104 cut-off events. For 92897/92897 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 119504 event pairs, 8614 based on Foata normal form. 3/21892 useless extension candidates. Maximal degree in co-relation 82437. Up to 21623 conditions per place. [2024-06-04 15:18:59,688 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 93 selfloop transitions, 14 changer transitions 0/112 dead transitions. [2024-06-04 15:18:59,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 112 transitions, 838 flow [2024-06-04 15:18:59,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:18:59,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:18:59,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-04 15:18:59,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44135802469135804 [2024-06-04 15:18:59,689 INFO L175 Difference]: Start difference. First operand has 77 places, 88 transitions, 562 flow. Second operand 6 states and 143 transitions. [2024-06-04 15:18:59,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 112 transitions, 838 flow [2024-06-04 15:18:59,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 112 transitions, 772 flow, removed 28 selfloop flow, removed 2 redundant places. [2024-06-04 15:18:59,768 INFO L231 Difference]: Finished difference. Result has 81 places, 88 transitions, 535 flow [2024-06-04 15:18:59,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=535, PETRI_PLACES=81, PETRI_TRANSITIONS=88} [2024-06-04 15:18:59,769 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 24 predicate places. [2024-06-04 15:18:59,769 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 88 transitions, 535 flow [2024-06-04 15:18:59,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:59,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:18:59,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:18:59,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-04 15:18:59,770 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:18:59,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:18:59,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1488179171, now seen corresponding path program 1 times [2024-06-04 15:18:59,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:18:59,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702922601] [2024-06-04 15:18:59,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:18:59,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:18:59,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:19:01,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:19:01,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:19:01,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702922601] [2024-06-04 15:19:01,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702922601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:19:01,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:19:01,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:19:01,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324299599] [2024-06-04 15:19:01,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:19:01,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:19:01,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:19:01,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:19:01,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:19:01,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-04 15:19:01,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 88 transitions, 535 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:01,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:19:01,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-04 15:19:01,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:19:03,256 INFO L124 PetriNetUnfolderBase]: 16131/22138 cut-off events. [2024-06-04 15:19:03,257 INFO L125 PetriNetUnfolderBase]: For 103559/103559 co-relation queries the response was YES. [2024-06-04 15:19:03,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83426 conditions, 22138 events. 16131/22138 cut-off events. For 103559/103559 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 119694 event pairs, 8441 based on Foata normal form. 3/21928 useless extension candidates. Maximal degree in co-relation 83396. Up to 21626 conditions per place. [2024-06-04 15:19:03,412 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 106 selfloop transitions, 18 changer transitions 0/129 dead transitions. [2024-06-04 15:19:03,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 129 transitions, 923 flow [2024-06-04 15:19:03,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:19:03,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:19:03,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-04 15:19:03,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-04 15:19:03,414 INFO L175 Difference]: Start difference. First operand has 81 places, 88 transitions, 535 flow. Second operand 7 states and 171 transitions. [2024-06-04 15:19:03,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 129 transitions, 923 flow [2024-06-04 15:19:03,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 129 transitions, 879 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-04 15:19:03,470 INFO L231 Difference]: Finished difference. Result has 82 places, 92 transitions, 590 flow [2024-06-04 15:19:03,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=590, PETRI_PLACES=82, PETRI_TRANSITIONS=92} [2024-06-04 15:19:03,471 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 25 predicate places. [2024-06-04 15:19:03,471 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 92 transitions, 590 flow [2024-06-04 15:19:03,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:03,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:19:03,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:19:03,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-04 15:19:03,472 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:19:03,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:19:03,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1315609373, now seen corresponding path program 2 times [2024-06-04 15:19:03,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:19:03,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431821039] [2024-06-04 15:19:03,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:19:03,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:19:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:19:04,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:19:04,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:19:04,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431821039] [2024-06-04 15:19:04,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431821039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:19:04,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:19:04,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:19:04,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871417055] [2024-06-04 15:19:04,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:19:04,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:19:04,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:19:04,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:19:04,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:19:04,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-04 15:19:04,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 92 transitions, 590 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:04,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:19:04,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-04 15:19:04,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:19:06,799 INFO L124 PetriNetUnfolderBase]: 16153/22170 cut-off events. [2024-06-04 15:19:06,799 INFO L125 PetriNetUnfolderBase]: For 128487/128497 co-relation queries the response was YES. [2024-06-04 15:19:06,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88574 conditions, 22170 events. 16153/22170 cut-off events. For 128487/128497 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 119802 event pairs, 8448 based on Foata normal form. 11/21967 useless extension candidates. Maximal degree in co-relation 88544. Up to 21578 conditions per place. [2024-06-04 15:19:06,941 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 97 selfloop transitions, 35 changer transitions 0/137 dead transitions. [2024-06-04 15:19:06,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 137 transitions, 1106 flow [2024-06-04 15:19:06,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:19:06,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:19:06,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-04 15:19:06,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-04 15:19:06,942 INFO L175 Difference]: Start difference. First operand has 82 places, 92 transitions, 590 flow. Second operand 7 states and 175 transitions. [2024-06-04 15:19:06,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 137 transitions, 1106 flow [2024-06-04 15:19:06,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 137 transitions, 1039 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-04 15:19:06,994 INFO L231 Difference]: Finished difference. Result has 84 places, 100 transitions, 716 flow [2024-06-04 15:19:06,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=716, PETRI_PLACES=84, PETRI_TRANSITIONS=100} [2024-06-04 15:19:06,994 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 27 predicate places. [2024-06-04 15:19:06,995 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 100 transitions, 716 flow [2024-06-04 15:19:06,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:06,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:19:06,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:19:06,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-04 15:19:06,995 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:19:06,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:19:06,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1315609187, now seen corresponding path program 1 times [2024-06-04 15:19:06,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:19:06,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382702855] [2024-06-04 15:19:06,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:19:06,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:19:07,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:19:08,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:19:08,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:19:08,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382702855] [2024-06-04 15:19:08,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382702855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:19:08,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:19:08,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:19:08,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78013246] [2024-06-04 15:19:08,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:19:08,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:19:08,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:19:08,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:19:08,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:19:08,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-04 15:19:08,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 100 transitions, 716 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:08,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:19:08,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-04 15:19:08,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:19:10,670 INFO L124 PetriNetUnfolderBase]: 16362/22456 cut-off events. [2024-06-04 15:19:10,670 INFO L125 PetriNetUnfolderBase]: For 162366/162374 co-relation queries the response was YES. [2024-06-04 15:19:10,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94830 conditions, 22456 events. 16362/22456 cut-off events. For 162366/162374 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 121447 event pairs, 7780 based on Foata normal form. 13/22263 useless extension candidates. Maximal degree in co-relation 94799. Up to 21623 conditions per place. [2024-06-04 15:19:10,800 INFO L140 encePairwiseOnDemand]: 40/54 looper letters, 125 selfloop transitions, 39 changer transitions 0/169 dead transitions. [2024-06-04 15:19:10,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 169 transitions, 1516 flow [2024-06-04 15:19:10,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:19:10,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:19:10,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 187 transitions. [2024-06-04 15:19:10,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947089947089947 [2024-06-04 15:19:10,801 INFO L175 Difference]: Start difference. First operand has 84 places, 100 transitions, 716 flow. Second operand 7 states and 187 transitions. [2024-06-04 15:19:10,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 169 transitions, 1516 flow [2024-06-04 15:19:10,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 169 transitions, 1448 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-04 15:19:10,873 INFO L231 Difference]: Finished difference. Result has 91 places, 122 transitions, 994 flow [2024-06-04 15:19:10,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=994, PETRI_PLACES=91, PETRI_TRANSITIONS=122} [2024-06-04 15:19:10,874 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 34 predicate places. [2024-06-04 15:19:10,874 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 122 transitions, 994 flow [2024-06-04 15:19:10,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:10,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:19:10,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:19:10,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-04 15:19:10,875 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:19:10,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:19:10,875 INFO L85 PathProgramCache]: Analyzing trace with hash -452086517, now seen corresponding path program 2 times [2024-06-04 15:19:10,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:19:10,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384322501] [2024-06-04 15:19:10,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:19:10,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:19:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:19:11,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:19:11,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:19:11,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384322501] [2024-06-04 15:19:11,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384322501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:19:11,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:19:11,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:19:11,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543426715] [2024-06-04 15:19:11,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:19:11,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:19:11,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:19:11,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:19:11,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:19:11,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-04 15:19:11,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 122 transitions, 994 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:11,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:19:11,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-04 15:19:11,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:19:14,596 INFO L124 PetriNetUnfolderBase]: 16448/22571 cut-off events. [2024-06-04 15:19:14,596 INFO L125 PetriNetUnfolderBase]: For 204400/204402 co-relation queries the response was YES. [2024-06-04 15:19:14,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104713 conditions, 22571 events. 16448/22571 cut-off events. For 204400/204402 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 122074 event pairs, 8017 based on Foata normal form. 12/22378 useless extension candidates. Maximal degree in co-relation 104677. Up to 21974 conditions per place. [2024-06-04 15:19:14,722 INFO L140 encePairwiseOnDemand]: 40/54 looper letters, 133 selfloop transitions, 27 changer transitions 0/165 dead transitions. [2024-06-04 15:19:14,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 165 transitions, 1571 flow [2024-06-04 15:19:14,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:19:14,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:19:14,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-04 15:19:14,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-04 15:19:14,724 INFO L175 Difference]: Start difference. First operand has 91 places, 122 transitions, 994 flow. Second operand 7 states and 175 transitions. [2024-06-04 15:19:14,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 165 transitions, 1571 flow [2024-06-04 15:19:14,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 165 transitions, 1505 flow, removed 32 selfloop flow, removed 1 redundant places. [2024-06-04 15:19:14,858 INFO L231 Difference]: Finished difference. Result has 98 places, 129 transitions, 1090 flow [2024-06-04 15:19:14,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1090, PETRI_PLACES=98, PETRI_TRANSITIONS=129} [2024-06-04 15:19:14,859 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 41 predicate places. [2024-06-04 15:19:14,859 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 129 transitions, 1090 flow [2024-06-04 15:19:14,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:14,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:19:14,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:19:14,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-04 15:19:14,860 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:19:14,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:19:14,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1498180787, now seen corresponding path program 3 times [2024-06-04 15:19:14,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:19:14,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949745902] [2024-06-04 15:19:14,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:19:14,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:19:14,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:19:15,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:19:15,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:19:15,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949745902] [2024-06-04 15:19:15,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949745902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:19:15,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:19:15,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:19:15,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690101457] [2024-06-04 15:19:15,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:19:15,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:19:15,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:19:15,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:19:15,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:19:15,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-04 15:19:15,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 129 transitions, 1090 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:15,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:19:15,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-04 15:19:15,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:19:18,595 INFO L124 PetriNetUnfolderBase]: 16439/22555 cut-off events. [2024-06-04 15:19:18,595 INFO L125 PetriNetUnfolderBase]: For 229409/229409 co-relation queries the response was YES. [2024-06-04 15:19:18,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107270 conditions, 22555 events. 16439/22555 cut-off events. For 229409/229409 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 121797 event pairs, 8057 based on Foata normal form. 3/22350 useless extension candidates. Maximal degree in co-relation 107230. Up to 22050 conditions per place. [2024-06-04 15:19:18,755 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 137 selfloop transitions, 18 changer transitions 0/160 dead transitions. [2024-06-04 15:19:18,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 160 transitions, 1480 flow [2024-06-04 15:19:18,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:19:18,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:19:18,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-04 15:19:18,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2024-06-04 15:19:18,757 INFO L175 Difference]: Start difference. First operand has 98 places, 129 transitions, 1090 flow. Second operand 7 states and 165 transitions. [2024-06-04 15:19:18,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 160 transitions, 1480 flow [2024-06-04 15:19:18,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 160 transitions, 1368 flow, removed 33 selfloop flow, removed 4 redundant places. [2024-06-04 15:19:18,888 INFO L231 Difference]: Finished difference. Result has 101 places, 129 transitions, 1025 flow [2024-06-04 15:19:18,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1025, PETRI_PLACES=101, PETRI_TRANSITIONS=129} [2024-06-04 15:19:18,888 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 44 predicate places. [2024-06-04 15:19:18,889 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 129 transitions, 1025 flow [2024-06-04 15:19:18,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:18,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:19:18,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:19:18,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-04 15:19:18,889 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:19:18,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:19:18,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1498180973, now seen corresponding path program 3 times [2024-06-04 15:19:18,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:19:18,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488066476] [2024-06-04 15:19:18,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:19:18,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:19:18,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:19:20,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:19:20,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:19:20,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488066476] [2024-06-04 15:19:20,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488066476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:19:20,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:19:20,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:19:20,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624718722] [2024-06-04 15:19:20,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:19:20,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:19:20,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:19:20,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:19:20,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:19:20,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-04 15:19:20,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 129 transitions, 1025 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:20,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:19:20,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-04 15:19:20,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:19:23,289 INFO L124 PetriNetUnfolderBase]: 16463/22591 cut-off events. [2024-06-04 15:19:23,289 INFO L125 PetriNetUnfolderBase]: For 249529/249531 co-relation queries the response was YES. [2024-06-04 15:19:23,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108753 conditions, 22591 events. 16463/22591 cut-off events. For 249529/249531 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 122091 event pairs, 8003 based on Foata normal form. 12/22398 useless extension candidates. Maximal degree in co-relation 108713. Up to 21863 conditions per place. [2024-06-04 15:19:23,421 INFO L140 encePairwiseOnDemand]: 40/54 looper letters, 136 selfloop transitions, 36 changer transitions 0/177 dead transitions. [2024-06-04 15:19:23,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 177 transitions, 1748 flow [2024-06-04 15:19:23,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:19:23,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:19:23,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-04 15:19:23,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47354497354497355 [2024-06-04 15:19:23,520 INFO L175 Difference]: Start difference. First operand has 101 places, 129 transitions, 1025 flow. Second operand 7 states and 179 transitions. [2024-06-04 15:19:23,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 177 transitions, 1748 flow [2024-06-04 15:19:23,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 177 transitions, 1689 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-04 15:19:23,675 INFO L231 Difference]: Finished difference. Result has 103 places, 138 transitions, 1200 flow [2024-06-04 15:19:23,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=966, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1200, PETRI_PLACES=103, PETRI_TRANSITIONS=138} [2024-06-04 15:19:23,676 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 46 predicate places. [2024-06-04 15:19:23,676 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 138 transitions, 1200 flow [2024-06-04 15:19:23,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:23,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:19:23,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:19:23,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-04 15:19:23,677 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:19:23,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:19:23,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1498427051, now seen corresponding path program 1 times [2024-06-04 15:19:23,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:19:23,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269000495] [2024-06-04 15:19:23,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:19:23,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:19:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:19:25,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:19:25,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:19:25,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269000495] [2024-06-04 15:19:25,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269000495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:19:25,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:19:25,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:19:25,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521006161] [2024-06-04 15:19:25,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:19:25,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:19:25,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:19:25,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:19:25,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:19:25,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-04 15:19:25,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 138 transitions, 1200 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:25,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:19:25,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-04 15:19:25,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:19:28,625 INFO L124 PetriNetUnfolderBase]: 16483/22615 cut-off events. [2024-06-04 15:19:28,626 INFO L125 PetriNetUnfolderBase]: For 285662/285664 co-relation queries the response was YES. [2024-06-04 15:19:28,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112681 conditions, 22615 events. 16483/22615 cut-off events. For 285662/285664 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 122180 event pairs, 7819 based on Foata normal form. 12/22419 useless extension candidates. Maximal degree in co-relation 112639. Up to 21978 conditions per place. [2024-06-04 15:19:28,795 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 140 selfloop transitions, 33 changer transitions 0/178 dead transitions. [2024-06-04 15:19:28,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 178 transitions, 1810 flow [2024-06-04 15:19:28,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:19:28,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:19:28,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-04 15:19:28,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4656084656084656 [2024-06-04 15:19:28,801 INFO L175 Difference]: Start difference. First operand has 103 places, 138 transitions, 1200 flow. Second operand 7 states and 176 transitions. [2024-06-04 15:19:28,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 178 transitions, 1810 flow [2024-06-04 15:19:29,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 178 transitions, 1736 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-04 15:19:29,019 INFO L231 Difference]: Finished difference. Result has 107 places, 142 transitions, 1273 flow [2024-06-04 15:19:29,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1126, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1273, PETRI_PLACES=107, PETRI_TRANSITIONS=142} [2024-06-04 15:19:29,021 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 50 predicate places. [2024-06-04 15:19:29,021 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 142 transitions, 1273 flow [2024-06-04 15:19:29,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:29,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:19:29,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:19:29,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-04 15:19:29,022 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:19:29,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:19:29,022 INFO L85 PathProgramCache]: Analyzing trace with hash 56932895, now seen corresponding path program 1 times [2024-06-04 15:19:29,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:19:29,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117620291] [2024-06-04 15:19:29,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:19:29,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:19:29,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:19:30,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:19:30,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:19:30,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117620291] [2024-06-04 15:19:30,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117620291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:19:30,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:19:30,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 15:19:30,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833922790] [2024-06-04 15:19:30,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:19:30,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 15:19:30,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:19:30,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 15:19:30,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-04 15:19:30,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-04 15:19:30,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 142 transitions, 1273 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:30,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:19:30,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-04 15:19:30,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:19:33,062 INFO L124 PetriNetUnfolderBase]: 15661/21791 cut-off events. [2024-06-04 15:19:33,062 INFO L125 PetriNetUnfolderBase]: For 317595/317595 co-relation queries the response was YES. [2024-06-04 15:19:33,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113843 conditions, 21791 events. 15661/21791 cut-off events. For 317595/317595 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 121146 event pairs, 8002 based on Foata normal form. 2/21585 useless extension candidates. Maximal degree in co-relation 113799. Up to 21077 conditions per place. [2024-06-04 15:19:33,244 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 131 selfloop transitions, 10 changer transitions 0/156 dead transitions. [2024-06-04 15:19:33,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 156 transitions, 1591 flow [2024-06-04 15:19:33,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 15:19:33,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 15:19:33,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-06-04 15:19:33,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44814814814814813 [2024-06-04 15:19:33,246 INFO L175 Difference]: Start difference. First operand has 107 places, 142 transitions, 1273 flow. Second operand 5 states and 121 transitions. [2024-06-04 15:19:33,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 156 transitions, 1591 flow [2024-06-04 15:19:33,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 156 transitions, 1460 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-04 15:19:33,413 INFO L231 Difference]: Finished difference. Result has 107 places, 142 transitions, 1171 flow [2024-06-04 15:19:33,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1142, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1171, PETRI_PLACES=107, PETRI_TRANSITIONS=142} [2024-06-04 15:19:33,413 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 50 predicate places. [2024-06-04 15:19:33,413 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 142 transitions, 1171 flow [2024-06-04 15:19:33,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:33,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:19:33,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:19:33,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-04 15:19:33,414 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:19:33,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:19:33,415 INFO L85 PathProgramCache]: Analyzing trace with hash -2000953072, now seen corresponding path program 1 times [2024-06-04 15:19:33,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:19:33,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563365005] [2024-06-04 15:19:33,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:19:33,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:19:33,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:19:35,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:19:35,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:19:35,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563365005] [2024-06-04 15:19:35,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563365005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:19:35,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:19:35,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:19:35,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242033586] [2024-06-04 15:19:35,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:19:35,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:19:35,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:19:35,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:19:35,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:19:35,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-04 15:19:35,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 142 transitions, 1171 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:35,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:19:35,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-04 15:19:35,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand