./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix051_pso.opt_rmo.opt_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/protection/mix051_pso.opt_rmo.opt_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix051_pso.opt_rmo.opt_tso.opt.i ./goblint.2024-05-07_14-17-48.files/protection/mix051_pso.opt_rmo.opt_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-b44c828-m [2024-05-12 13:26:16,058 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 13:26:16,105 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 13:26:16,111 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 13:26:16,111 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 13:26:16,142 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 13:26:16,142 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 13:26:16,142 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 13:26:16,143 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 13:26:16,143 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 13:26:16,143 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 13:26:16,144 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 13:26:16,144 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 13:26:16,145 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 13:26:16,145 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 13:26:16,145 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 13:26:16,145 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 13:26:16,146 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 13:26:16,146 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 13:26:16,146 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 13:26:16,147 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 13:26:16,147 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 13:26:16,147 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 13:26:16,148 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 13:26:16,148 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 13:26:16,148 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 13:26:16,148 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 13:26:16,148 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 13:26:16,149 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 13:26:16,149 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 13:26:16,149 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 13:26:16,149 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 13:26:16,150 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:26:16,150 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 13:26:16,150 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 13:26:16,150 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 13:26:16,151 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 13:26:16,151 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 13:26:16,151 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 13:26:16,151 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 13:26:16,152 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 13:26:16,152 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 13:26:16,152 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 13:26:16,152 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 13:26:16,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 13:26:16,359 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 13:26:16,361 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 13:26:16,362 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 13:26:16,364 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 13:26:16,365 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/mix051_pso.opt_rmo.opt_tso.opt.yml/witness.yml [2024-05-12 13:26:16,593 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 13:26:16,593 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 13:26:16,594 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix051_pso.opt_rmo.opt_tso.opt.i [2024-05-12 13:26:17,562 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 13:26:17,773 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 13:26:17,774 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix051_pso.opt_rmo.opt_tso.opt.i [2024-05-12 13:26:17,792 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a5ce9940/86649fb9a51141938a3857adfb735e0c/FLAG66fda8fa6 [2024-05-12 13:26:17,802 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a5ce9940/86649fb9a51141938a3857adfb735e0c [2024-05-12 13:26:17,802 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 13:26:17,803 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 13:26:17,804 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 13:26:17,804 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 13:26:17,808 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 13:26:17,808 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:26:16" (1/2) ... [2024-05-12 13:26:17,809 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@472faab4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:26:17, skipping insertion in model container [2024-05-12 13:26:17,809 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:26:16" (1/2) ... [2024-05-12 13:26:17,810 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5c058284 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:26:17, skipping insertion in model container [2024-05-12 13:26:17,810 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:26:17" (2/2) ... [2024-05-12 13:26:17,811 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@472faab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:26:17, skipping insertion in model container [2024-05-12 13:26:17,811 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:26:17" (2/2) ... [2024-05-12 13:26:17,811 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 13:26:17,902 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 13:26:17,903 INFO L97 edCorrectnessWitness]: Location invariant before [L853-L853] (((((((((((((((((((((! multithreaded || z$r_buff1_thd3 == (_Bool)0) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0) [2024-05-12 13:26:17,903 INFO L97 edCorrectnessWitness]: Location invariant before [L851-L851] (((((((((((((((((((((! multithreaded || z$r_buff1_thd3 == (_Bool)0) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0) [2024-05-12 13:26:17,903 INFO L97 edCorrectnessWitness]: Location invariant before [L849-L849] (((((((((((((((((((((! multithreaded || z$r_buff1_thd3 == (_Bool)0) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0) [2024-05-12 13:26:17,903 INFO L97 edCorrectnessWitness]: Location invariant before [L854-L854] (((((((((((((((((((((! multithreaded || z$r_buff1_thd3 == (_Bool)0) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0) [2024-05-12 13:26:17,903 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 13:26:17,903 INFO L106 edCorrectnessWitness]: ghost_update [L847-L847] multithreaded = 1; [2024-05-12 13:26:17,938 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 13:26:18,084 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix051_pso.opt_rmo.opt_tso.opt.i[964,977] [2024-05-12 13:26:18,243 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:26:18,252 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-05-12 13:26:18,281 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix051_pso.opt_rmo.opt_tso.opt.i[964,977] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 13:26:18,353 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:26:18,382 INFO L206 MainTranslator]: Completed translation [2024-05-12 13:26:18,383 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:26:18 WrapperNode [2024-05-12 13:26:18,383 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 13:26:18,383 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 13:26:18,384 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 13:26:18,384 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 13:26:18,388 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:26:18" (1/1) ... [2024-05-12 13:26:18,400 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:26:18" (1/1) ... [2024-05-12 13:26:18,436 INFO L138 Inliner]: procedures = 177, calls = 67, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 150 [2024-05-12 13:26:18,436 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 13:26:18,437 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 13:26:18,437 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 13:26:18,437 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 13:26:18,446 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:26:18" (1/1) ... [2024-05-12 13:26:18,446 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:26:18" (1/1) ... [2024-05-12 13:26:18,449 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:26:18" (1/1) ... [2024-05-12 13:26:18,461 INFO L175 MemorySlicer]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-05-12 13:26:18,462 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:26:18" (1/1) ... [2024-05-12 13:26:18,462 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:26:18" (1/1) ... [2024-05-12 13:26:18,470 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:26:18" (1/1) ... [2024-05-12 13:26:18,471 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:26:18" (1/1) ... [2024-05-12 13:26:18,473 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:26:18" (1/1) ... [2024-05-12 13:26:18,474 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:26:18" (1/1) ... [2024-05-12 13:26:18,478 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 13:26:18,478 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 13:26:18,478 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 13:26:18,478 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 13:26:18,479 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:26:18" (1/1) ... [2024-05-12 13:26:18,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:26:18,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 13:26:18,500 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-05-12 13:26:18,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-05-12 13:26:18,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 13:26:18,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 13:26:18,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 13:26:18,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 13:26:18,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-05-12 13:26:18,527 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 13:26:18,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 13:26:18,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 13:26:18,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 13:26:18,528 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-05-12 13:26:18,528 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-05-12 13:26:18,528 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-05-12 13:26:18,528 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-05-12 13:26:18,528 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-05-12 13:26:18,529 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-05-12 13:26:18,529 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-05-12 13:26:18,529 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-05-12 13:26:18,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 13:26:18,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 13:26:18,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 13:26:18,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 13:26:18,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-05-12 13:26:18,530 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 13:26:18,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 13:26:18,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 13:26:18,532 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 13:26:18,681 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 13:26:18,686 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 13:26:18,974 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 13:26:18,975 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 13:26:19,132 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 13:26:19,132 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 13:26:19,132 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:26:19 BoogieIcfgContainer [2024-05-12 13:26:19,132 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 13:26:19,135 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 13:26:19,135 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 13:26:19,137 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 13:26:19,137 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:26:16" (1/4) ... [2024-05-12 13:26:19,138 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c7b628 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:26:19, skipping insertion in model container [2024-05-12 13:26:19,138 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 01:26:17" (2/4) ... [2024-05-12 13:26:19,139 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c7b628 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:26:19, skipping insertion in model container [2024-05-12 13:26:19,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:26:18" (3/4) ... [2024-05-12 13:26:19,139 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c7b628 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:26:19, skipping insertion in model container [2024-05-12 13:26:19,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:26:19" (4/4) ... [2024-05-12 13:26:19,140 INFO L112 eAbstractionObserver]: Analyzing ICFG mix051_pso.opt_rmo.opt_tso.opt.i [2024-05-12 13:26:19,152 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 13:26:19,152 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-05-12 13:26:19,152 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 13:26:19,193 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 13:26:19,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 58 transitions, 132 flow [2024-05-12 13:26:19,258 INFO L124 PetriNetUnfolderBase]: 1/54 cut-off events. [2024-05-12 13:26:19,258 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:26:19,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 54 events. 1/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 98 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2024-05-12 13:26:19,262 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 58 transitions, 132 flow [2024-05-12 13:26:19,265 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 54 transitions, 120 flow [2024-05-12 13:26:19,275 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 13:26:19,306 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;@507ee1ce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 13:26:19,306 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-05-12 13:26:19,310 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 13:26:19,310 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 13:26:19,310 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:26:19,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:26:19,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 13:26:19,311 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:26:19,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:26:19,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1655909703, now seen corresponding path program 1 times [2024-05-12 13:26:19,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:26:19,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496790813] [2024-05-12 13:26:19,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:26:19,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:26:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:26:20,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:26:20,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:26:20,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496790813] [2024-05-12 13:26:20,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496790813] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:26:20,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:26:20,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:26:20,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101825795] [2024-05-12 13:26:20,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:26:20,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:26:20,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:26:20,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:26:20,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:26:20,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-05-12 13:26:20,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:20,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:26:20,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-05-12 13:26:20,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:26:22,420 INFO L124 PetriNetUnfolderBase]: 13840/19275 cut-off events. [2024-05-12 13:26:22,421 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-05-12 13:26:22,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38072 conditions, 19275 events. 13840/19275 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 782. Compared 119192 event pairs, 9304 based on Foata normal form. 601/18960 useless extension candidates. Maximal degree in co-relation 38056. Up to 18522 conditions per place. [2024-05-12 13:26:22,667 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 51 selfloop transitions, 6 changer transitions 0/72 dead transitions. [2024-05-12 13:26:22,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 72 transitions, 279 flow [2024-05-12 13:26:22,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:26:22,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:26:22,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2024-05-12 13:26:22,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6896551724137931 [2024-05-12 13:26:22,679 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 120 flow. Second operand 3 states and 120 transitions. [2024-05-12 13:26:22,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 72 transitions, 279 flow [2024-05-12 13:26:22,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 72 transitions, 272 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-05-12 13:26:22,688 INFO L231 Difference]: Finished difference. Result has 65 places, 58 transitions, 160 flow [2024-05-12 13:26:22,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=65, PETRI_TRANSITIONS=58} [2024-05-12 13:26:22,692 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -1 predicate places. [2024-05-12 13:26:22,692 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 58 transitions, 160 flow [2024-05-12 13:26:22,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:22,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:26:22,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:26:22,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 13:26:22,694 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:26:22,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:26:22,694 INFO L85 PathProgramCache]: Analyzing trace with hash 2103683288, now seen corresponding path program 1 times [2024-05-12 13:26:22,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:26:22,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475452606] [2024-05-12 13:26:22,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:26:22,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:26:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:26:23,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:26:23,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:26:23,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475452606] [2024-05-12 13:26:23,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475452606] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:26:23,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:26:23,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 13:26:23,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718970317] [2024-05-12 13:26:23,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:26:23,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 13:26:23,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:26:23,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 13:26:23,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 13:26:23,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 58 [2024-05-12 13:26:23,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 58 transitions, 160 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:23,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:26:23,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 58 [2024-05-12 13:26:23,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:26:25,451 INFO L124 PetriNetUnfolderBase]: 16074/24443 cut-off events. [2024-05-12 13:26:25,451 INFO L125 PetriNetUnfolderBase]: For 3996/3996 co-relation queries the response was YES. [2024-05-12 13:26:25,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51901 conditions, 24443 events. 16074/24443 cut-off events. For 3996/3996 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 174367 event pairs, 12255 based on Foata normal form. 4/22989 useless extension candidates. Maximal degree in co-relation 51886. Up to 21423 conditions per place. [2024-05-12 13:26:25,570 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 66 selfloop transitions, 11 changer transitions 0/91 dead transitions. [2024-05-12 13:26:25,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 91 transitions, 400 flow [2024-05-12 13:26:25,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 13:26:25,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 13:26:25,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 153 transitions. [2024-05-12 13:26:25,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6594827586206896 [2024-05-12 13:26:25,585 INFO L175 Difference]: Start difference. First operand has 65 places, 58 transitions, 160 flow. Second operand 4 states and 153 transitions. [2024-05-12 13:26:25,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 91 transitions, 400 flow [2024-05-12 13:26:25,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 91 transitions, 394 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 13:26:25,588 INFO L231 Difference]: Finished difference. Result has 68 places, 63 transitions, 218 flow [2024-05-12 13:26:25,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=218, PETRI_PLACES=68, PETRI_TRANSITIONS=63} [2024-05-12 13:26:25,589 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 2 predicate places. [2024-05-12 13:26:25,589 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 63 transitions, 218 flow [2024-05-12 13:26:25,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:25,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:26:25,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:26:25,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 13:26:25,590 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:26:25,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:26:25,591 INFO L85 PathProgramCache]: Analyzing trace with hash 789673832, now seen corresponding path program 1 times [2024-05-12 13:26:25,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:26:25,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431466391] [2024-05-12 13:26:25,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:26:25,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:26:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:26:26,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:26:26,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:26:26,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431466391] [2024-05-12 13:26:26,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431466391] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:26:26,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:26:26,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 13:26:26,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842817064] [2024-05-12 13:26:26,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:26:26,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 13:26:26,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:26:26,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 13:26:26,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-05-12 13:26:26,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 58 [2024-05-12 13:26:26,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 63 transitions, 218 flow. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:26,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:26:26,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 58 [2024-05-12 13:26:26,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:26:28,432 INFO L124 PetriNetUnfolderBase]: 16114/23492 cut-off events. [2024-05-12 13:26:28,433 INFO L125 PetriNetUnfolderBase]: For 10297/10297 co-relation queries the response was YES. [2024-05-12 13:26:28,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56734 conditions, 23492 events. 16114/23492 cut-off events. For 10297/10297 co-relation queries the response was YES. Maximal size of possible extension queue 933. Compared 157177 event pairs, 8208 based on Foata normal form. 7/22205 useless extension candidates. Maximal degree in co-relation 56717. Up to 21326 conditions per place. [2024-05-12 13:26:28,605 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 88 selfloop transitions, 26 changer transitions 0/128 dead transitions. [2024-05-12 13:26:28,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 128 transitions, 662 flow [2024-05-12 13:26:28,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:26:28,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:26:28,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 200 transitions. [2024-05-12 13:26:28,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6896551724137931 [2024-05-12 13:26:28,609 INFO L175 Difference]: Start difference. First operand has 68 places, 63 transitions, 218 flow. Second operand 5 states and 200 transitions. [2024-05-12 13:26:28,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 128 transitions, 662 flow [2024-05-12 13:26:28,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 128 transitions, 638 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-05-12 13:26:28,616 INFO L231 Difference]: Finished difference. Result has 73 places, 80 transitions, 379 flow [2024-05-12 13:26:28,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=379, PETRI_PLACES=73, PETRI_TRANSITIONS=80} [2024-05-12 13:26:28,617 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 7 predicate places. [2024-05-12 13:26:28,617 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 80 transitions, 379 flow [2024-05-12 13:26:28,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:28,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:26:28,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:26:28,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 13:26:28,619 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:26:28,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:26:28,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1332614809, now seen corresponding path program 1 times [2024-05-12 13:26:28,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:26:28,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678282516] [2024-05-12 13:26:28,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:26:28,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:26:28,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:26:29,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:26:29,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:26:29,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678282516] [2024-05-12 13:26:29,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678282516] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:26:29,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:26:29,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:26:29,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27183946] [2024-05-12 13:26:29,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:26:29,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:26:29,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:26:29,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:26:29,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:26:29,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 58 [2024-05-12 13:26:29,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 80 transitions, 379 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:29,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:26:29,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 58 [2024-05-12 13:26:29,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:26:31,542 INFO L124 PetriNetUnfolderBase]: 16414/24950 cut-off events. [2024-05-12 13:26:31,542 INFO L125 PetriNetUnfolderBase]: For 27620/27642 co-relation queries the response was YES. [2024-05-12 13:26:31,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68660 conditions, 24950 events. 16414/24950 cut-off events. For 27620/27642 co-relation queries the response was YES. Maximal size of possible extension queue 1025. Compared 178135 event pairs, 8137 based on Foata normal form. 50/23514 useless extension candidates. Maximal degree in co-relation 68640. Up to 21412 conditions per place. [2024-05-12 13:26:31,721 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 102 selfloop transitions, 30 changer transitions 0/146 dead transitions. [2024-05-12 13:26:31,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 146 transitions, 855 flow [2024-05-12 13:26:31,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:26:31,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:26:31,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 236 transitions. [2024-05-12 13:26:31,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6781609195402298 [2024-05-12 13:26:31,723 INFO L175 Difference]: Start difference. First operand has 73 places, 80 transitions, 379 flow. Second operand 6 states and 236 transitions. [2024-05-12 13:26:31,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 146 transitions, 855 flow [2024-05-12 13:26:31,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 146 transitions, 839 flow, removed 8 selfloop flow, removed 0 redundant places. [2024-05-12 13:26:31,732 INFO L231 Difference]: Finished difference. Result has 78 places, 83 transitions, 467 flow [2024-05-12 13:26:31,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=467, PETRI_PLACES=78, PETRI_TRANSITIONS=83} [2024-05-12 13:26:31,733 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 12 predicate places. [2024-05-12 13:26:31,733 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 83 transitions, 467 flow [2024-05-12 13:26:31,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:31,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:26:31,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:26:31,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 13:26:31,734 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:26:31,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:26:31,734 INFO L85 PathProgramCache]: Analyzing trace with hash -2139650911, now seen corresponding path program 1 times [2024-05-12 13:26:31,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:26:31,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295806046] [2024-05-12 13:26:31,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:26:31,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:26:31,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:26:32,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:26:32,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:26:32,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295806046] [2024-05-12 13:26:32,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295806046] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:26:32,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:26:32,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:26:32,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979832119] [2024-05-12 13:26:32,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:26:32,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:26:32,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:26:32,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:26:32,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:26:32,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 58 [2024-05-12 13:26:32,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 83 transitions, 467 flow. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:32,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:26:32,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 58 [2024-05-12 13:26:32,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:26:34,498 INFO L124 PetriNetUnfolderBase]: 16108/22479 cut-off events. [2024-05-12 13:26:34,498 INFO L125 PetriNetUnfolderBase]: For 33686/33718 co-relation queries the response was YES. [2024-05-12 13:26:34,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71090 conditions, 22479 events. 16108/22479 cut-off events. For 33686/33718 co-relation queries the response was YES. Maximal size of possible extension queue 878. Compared 139852 event pairs, 6351 based on Foata normal form. 3/21595 useless extension candidates. Maximal degree in co-relation 71067. Up to 21489 conditions per place. [2024-05-12 13:26:34,659 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 84 selfloop transitions, 12 changer transitions 0/110 dead transitions. [2024-05-12 13:26:34,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 110 transitions, 723 flow [2024-05-12 13:26:34,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:26:34,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:26:34,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 168 transitions. [2024-05-12 13:26:34,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5793103448275863 [2024-05-12 13:26:34,661 INFO L175 Difference]: Start difference. First operand has 78 places, 83 transitions, 467 flow. Second operand 5 states and 168 transitions. [2024-05-12 13:26:34,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 110 transitions, 723 flow [2024-05-12 13:26:34,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 110 transitions, 645 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-05-12 13:26:34,679 INFO L231 Difference]: Finished difference. Result has 79 places, 83 transitions, 425 flow [2024-05-12 13:26:34,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=425, PETRI_PLACES=79, PETRI_TRANSITIONS=83} [2024-05-12 13:26:34,680 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 13 predicate places. [2024-05-12 13:26:34,680 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 83 transitions, 425 flow [2024-05-12 13:26:34,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:34,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:26:34,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:26:34,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 13:26:34,681 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:26:34,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:26:34,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1078376308, now seen corresponding path program 1 times [2024-05-12 13:26:34,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:26:34,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901554678] [2024-05-12 13:26:34,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:26:34,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:26:34,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:26:35,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:26:35,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:26:35,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901554678] [2024-05-12 13:26:35,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901554678] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:26:35,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:26:35,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:26:35,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638588152] [2024-05-12 13:26:35,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:26:35,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:26:35,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:26:35,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:26:35,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:26:35,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 58 [2024-05-12 13:26:35,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 83 transitions, 425 flow. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:35,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:26:35,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 58 [2024-05-12 13:26:35,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:26:38,103 INFO L124 PetriNetUnfolderBase]: 18727/25327 cut-off events. [2024-05-12 13:26:38,103 INFO L125 PetriNetUnfolderBase]: For 42292/42322 co-relation queries the response was YES. [2024-05-12 13:26:38,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80027 conditions, 25327 events. 18727/25327 cut-off events. For 42292/42322 co-relation queries the response was YES. Maximal size of possible extension queue 972. Compared 151003 event pairs, 7465 based on Foata normal form. 34/24468 useless extension candidates. Maximal degree in co-relation 80002. Up to 24737 conditions per place. [2024-05-12 13:26:38,254 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 89 selfloop transitions, 31 changer transitions 0/133 dead transitions. [2024-05-12 13:26:38,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 133 transitions, 841 flow [2024-05-12 13:26:38,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:26:38,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:26:38,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 208 transitions. [2024-05-12 13:26:38,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5977011494252874 [2024-05-12 13:26:38,256 INFO L175 Difference]: Start difference. First operand has 79 places, 83 transitions, 425 flow. Second operand 6 states and 208 transitions. [2024-05-12 13:26:38,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 133 transitions, 841 flow [2024-05-12 13:26:38,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 133 transitions, 805 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-05-12 13:26:38,270 INFO L231 Difference]: Finished difference. Result has 81 places, 88 transitions, 507 flow [2024-05-12 13:26:38,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=507, PETRI_PLACES=81, PETRI_TRANSITIONS=88} [2024-05-12 13:26:38,271 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 15 predicate places. [2024-05-12 13:26:38,271 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 88 transitions, 507 flow [2024-05-12 13:26:38,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:38,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:26:38,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:26:38,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 13:26:38,272 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:26:38,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:26:38,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1049502140, now seen corresponding path program 2 times [2024-05-12 13:26:38,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:26:38,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564034115] [2024-05-12 13:26:38,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:26:38,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:26:38,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:26:39,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:26:39,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:26:39,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564034115] [2024-05-12 13:26:39,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564034115] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:26:39,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:26:39,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:26:39,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501620051] [2024-05-12 13:26:39,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:26:39,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:26:39,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:26:39,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:26:39,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:26:39,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 58 [2024-05-12 13:26:39,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 88 transitions, 507 flow. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:39,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:26:39,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 58 [2024-05-12 13:26:39,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:26:41,634 INFO L124 PetriNetUnfolderBase]: 18672/25254 cut-off events. [2024-05-12 13:26:41,634 INFO L125 PetriNetUnfolderBase]: For 46889/46921 co-relation queries the response was YES. [2024-05-12 13:26:41,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80870 conditions, 25254 events. 18672/25254 cut-off events. For 46889/46921 co-relation queries the response was YES. Maximal size of possible extension queue 972. Compared 150509 event pairs, 7489 based on Foata normal form. 33/24398 useless extension candidates. Maximal degree in co-relation 80845. Up to 24658 conditions per place. [2024-05-12 13:26:41,814 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 82 selfloop transitions, 32 changer transitions 0/127 dead transitions. [2024-05-12 13:26:41,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 127 transitions, 827 flow [2024-05-12 13:26:41,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:26:41,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:26:41,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 203 transitions. [2024-05-12 13:26:41,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-05-12 13:26:41,816 INFO L175 Difference]: Start difference. First operand has 81 places, 88 transitions, 507 flow. Second operand 6 states and 203 transitions. [2024-05-12 13:26:41,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 127 transitions, 827 flow [2024-05-12 13:26:41,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 127 transitions, 770 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-05-12 13:26:41,846 INFO L231 Difference]: Finished difference. Result has 84 places, 88 transitions, 526 flow [2024-05-12 13:26:41,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=526, PETRI_PLACES=84, PETRI_TRANSITIONS=88} [2024-05-12 13:26:41,847 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 18 predicate places. [2024-05-12 13:26:41,847 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 88 transitions, 526 flow [2024-05-12 13:26:41,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:41,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:26:41,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:26:41,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 13:26:41,848 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:26:41,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:26:41,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1525784560, now seen corresponding path program 1 times [2024-05-12 13:26:41,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:26:41,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266616006] [2024-05-12 13:26:41,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:26:41,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:26:41,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:26:42,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:26:42,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:26:42,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266616006] [2024-05-12 13:26:42,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266616006] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:26:42,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:26:42,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:26:42,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485208144] [2024-05-12 13:26:42,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:26:42,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:26:42,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:26:42,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:26:42,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:26:43,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 58 [2024-05-12 13:26:43,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 88 transitions, 526 flow. Second operand has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:43,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:26:43,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 58 [2024-05-12 13:26:43,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:26:45,884 INFO L124 PetriNetUnfolderBase]: 20494/28333 cut-off events. [2024-05-12 13:26:45,884 INFO L125 PetriNetUnfolderBase]: For 54022/54022 co-relation queries the response was YES. [2024-05-12 13:26:46,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89599 conditions, 28333 events. 20494/28333 cut-off events. For 54022/54022 co-relation queries the response was YES. Maximal size of possible extension queue 987. Compared 173781 event pairs, 8126 based on Foata normal form. 6/27238 useless extension candidates. Maximal degree in co-relation 89573. Up to 27137 conditions per place. [2024-05-12 13:26:46,123 INFO L140 encePairwiseOnDemand]: 46/58 looper letters, 115 selfloop transitions, 21 changer transitions 0/149 dead transitions. [2024-05-12 13:26:46,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 149 transitions, 993 flow [2024-05-12 13:26:46,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:26:46,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:26:46,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 232 transitions. [2024-05-12 13:26:46,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-05-12 13:26:46,126 INFO L175 Difference]: Start difference. First operand has 84 places, 88 transitions, 526 flow. Second operand 7 states and 232 transitions. [2024-05-12 13:26:46,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 149 transitions, 993 flow [2024-05-12 13:26:46,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 149 transitions, 881 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-05-12 13:26:46,176 INFO L231 Difference]: Finished difference. Result has 86 places, 97 transitions, 556 flow [2024-05-12 13:26:46,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=556, PETRI_PLACES=86, PETRI_TRANSITIONS=97} [2024-05-12 13:26:46,177 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 20 predicate places. [2024-05-12 13:26:46,177 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 97 transitions, 556 flow [2024-05-12 13:26:46,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:46,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:26:46,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:26:46,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 13:26:46,178 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:26:46,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:26:46,178 INFO L85 PathProgramCache]: Analyzing trace with hash 2103833515, now seen corresponding path program 1 times [2024-05-12 13:26:46,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:26:46,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329176970] [2024-05-12 13:26:46,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:26:46,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:26:46,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:26:46,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:26:46,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:26:46,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329176970] [2024-05-12 13:26:46,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329176970] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:26:46,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:26:46,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:26:46,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431374417] [2024-05-12 13:26:46,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:26:46,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:26:46,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:26:46,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:26:46,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:26:47,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 58 [2024-05-12 13:26:47,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 97 transitions, 556 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:47,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:26:47,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 58 [2024-05-12 13:26:47,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:26:49,696 INFO L124 PetriNetUnfolderBase]: 20478/28624 cut-off events. [2024-05-12 13:26:49,697 INFO L125 PetriNetUnfolderBase]: For 66320/66320 co-relation queries the response was YES. [2024-05-12 13:26:49,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95771 conditions, 28624 events. 20478/28624 cut-off events. For 66320/66320 co-relation queries the response was YES. Maximal size of possible extension queue 1008. Compared 176340 event pairs, 8286 based on Foata normal form. 4/27542 useless extension candidates. Maximal degree in co-relation 95743. Up to 27179 conditions per place. [2024-05-12 13:26:49,940 INFO L140 encePairwiseOnDemand]: 48/58 looper letters, 102 selfloop transitions, 12 changer transitions 0/127 dead transitions. [2024-05-12 13:26:49,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 127 transitions, 886 flow [2024-05-12 13:26:49,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:26:49,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:26:49,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2024-05-12 13:26:49,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5551724137931034 [2024-05-12 13:26:49,943 INFO L175 Difference]: Start difference. First operand has 86 places, 97 transitions, 556 flow. Second operand 5 states and 161 transitions. [2024-05-12 13:26:49,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 127 transitions, 886 flow [2024-05-12 13:26:49,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 127 transitions, 823 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-05-12 13:26:49,985 INFO L231 Difference]: Finished difference. Result has 87 places, 102 transitions, 581 flow [2024-05-12 13:26:49,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=581, PETRI_PLACES=87, PETRI_TRANSITIONS=102} [2024-05-12 13:26:49,986 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 21 predicate places. [2024-05-12 13:26:49,986 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 102 transitions, 581 flow [2024-05-12 13:26:49,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:49,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:26:49,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:26:49,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-05-12 13:26:49,987 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:26:49,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:26:49,987 INFO L85 PathProgramCache]: Analyzing trace with hash 793362478, now seen corresponding path program 1 times [2024-05-12 13:26:49,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:26:49,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632795181] [2024-05-12 13:26:49,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:26:49,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:26:50,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:26:50,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:26:50,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:26:50,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632795181] [2024-05-12 13:26:50,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632795181] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:26:50,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:26:50,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:26:50,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227128121] [2024-05-12 13:26:50,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:26:50,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:26:50,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:26:50,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:26:50,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:26:50,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 58 [2024-05-12 13:26:50,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 102 transitions, 581 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:50,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:26:50,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 58 [2024-05-12 13:26:50,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:26:50,981 INFO L124 PetriNetUnfolderBase]: 5645/10380 cut-off events. [2024-05-12 13:26:50,981 INFO L125 PetriNetUnfolderBase]: For 27344/29893 co-relation queries the response was YES. [2024-05-12 13:26:51,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29342 conditions, 10380 events. 5645/10380 cut-off events. For 27344/29893 co-relation queries the response was YES. Maximal size of possible extension queue 705. Compared 90923 event pairs, 1332 based on Foata normal form. 4/9439 useless extension candidates. Maximal degree in co-relation 29313. Up to 5573 conditions per place. [2024-05-12 13:26:51,069 INFO L140 encePairwiseOnDemand]: 55/58 looper letters, 32 selfloop transitions, 12 changer transitions 0/100 dead transitions. [2024-05-12 13:26:51,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 100 transitions, 604 flow [2024-05-12 13:26:51,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:26:51,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:26:51,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 128 transitions. [2024-05-12 13:26:51,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.735632183908046 [2024-05-12 13:26:51,070 INFO L175 Difference]: Start difference. First operand has 87 places, 102 transitions, 581 flow. Second operand 3 states and 128 transitions. [2024-05-12 13:26:51,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 100 transitions, 604 flow [2024-05-12 13:26:51,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 100 transitions, 565 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-05-12 13:26:51,084 INFO L231 Difference]: Finished difference. Result has 85 places, 91 transitions, 483 flow [2024-05-12 13:26:51,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=483, PETRI_PLACES=85, PETRI_TRANSITIONS=91} [2024-05-12 13:26:51,084 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 19 predicate places. [2024-05-12 13:26:51,085 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 91 transitions, 483 flow [2024-05-12 13:26:51,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:51,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:26:51,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:26:51,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-05-12 13:26:51,085 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:26:51,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:26:51,085 INFO L85 PathProgramCache]: Analyzing trace with hash 475251885, now seen corresponding path program 1 times [2024-05-12 13:26:51,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:26:51,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19237237] [2024-05-12 13:26:51,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:26:51,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:26:51,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:26:51,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:26:51,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:26:51,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19237237] [2024-05-12 13:26:51,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19237237] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:26:51,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:26:51,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:26:51,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046013783] [2024-05-12 13:26:51,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:26:51,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:26:51,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:26:51,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:26:51,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:26:52,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 58 [2024-05-12 13:26:52,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 91 transitions, 483 flow. Second operand has 8 states, 8 states have (on average 18.625) internal successors, (149), 8 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:52,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:26:52,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 58 [2024-05-12 13:26:52,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:26:54,713 INFO L124 PetriNetUnfolderBase]: 20481/27843 cut-off events. [2024-05-12 13:26:54,713 INFO L125 PetriNetUnfolderBase]: For 106976/107148 co-relation queries the response was YES. [2024-05-12 13:26:54,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97309 conditions, 27843 events. 20481/27843 cut-off events. For 106976/107148 co-relation queries the response was YES. Maximal size of possible extension queue 1013. Compared 166999 event pairs, 5591 based on Foata normal form. 84/27878 useless extension candidates. Maximal degree in co-relation 97281. Up to 26073 conditions per place. [2024-05-12 13:26:54,901 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 112 selfloop transitions, 32 changer transitions 2/160 dead transitions. [2024-05-12 13:26:54,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 160 transitions, 1043 flow [2024-05-12 13:26:54,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:26:54,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:26:54,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 241 transitions. [2024-05-12 13:26:54,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5935960591133005 [2024-05-12 13:26:54,903 INFO L175 Difference]: Start difference. First operand has 85 places, 91 transitions, 483 flow. Second operand 7 states and 241 transitions. [2024-05-12 13:26:54,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 160 transitions, 1043 flow [2024-05-12 13:26:54,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 160 transitions, 1015 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 13:26:54,952 INFO L231 Difference]: Finished difference. Result has 90 places, 95 transitions, 588 flow [2024-05-12 13:26:54,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=588, PETRI_PLACES=90, PETRI_TRANSITIONS=95} [2024-05-12 13:26:54,953 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 24 predicate places. [2024-05-12 13:26:54,953 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 95 transitions, 588 flow [2024-05-12 13:26:54,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.625) internal successors, (149), 8 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:54,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:26:54,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:26:54,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-05-12 13:26:54,953 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:26:54,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:26:54,954 INFO L85 PathProgramCache]: Analyzing trace with hash -474527017, now seen corresponding path program 2 times [2024-05-12 13:26:54,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:26:54,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946676566] [2024-05-12 13:26:54,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:26:54,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:26:54,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:26:55,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:26:55,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:26:55,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946676566] [2024-05-12 13:26:55,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946676566] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:26:55,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:26:55,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:26:55,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359857296] [2024-05-12 13:26:55,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:26:55,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:26:55,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:26:55,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:26:55,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:26:55,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 58 [2024-05-12 13:26:55,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 95 transitions, 588 flow. Second operand has 8 states, 8 states have (on average 18.625) internal successors, (149), 8 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:55,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:26:55,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 58 [2024-05-12 13:26:55,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:26:58,787 INFO L124 PetriNetUnfolderBase]: 20724/28217 cut-off events. [2024-05-12 13:26:58,787 INFO L125 PetriNetUnfolderBase]: For 122889/123061 co-relation queries the response was YES. [2024-05-12 13:26:58,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101562 conditions, 28217 events. 20724/28217 cut-off events. For 122889/123061 co-relation queries the response was YES. Maximal size of possible extension queue 1023. Compared 169908 event pairs, 6961 based on Foata normal form. 132/28300 useless extension candidates. Maximal degree in co-relation 101532. Up to 27114 conditions per place. [2024-05-12 13:26:58,996 INFO L140 encePairwiseOnDemand]: 46/58 looper letters, 109 selfloop transitions, 31 changer transitions 2/156 dead transitions. [2024-05-12 13:26:58,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 156 transitions, 1048 flow [2024-05-12 13:26:58,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:26:58,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:26:58,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 237 transitions. [2024-05-12 13:26:58,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.583743842364532 [2024-05-12 13:26:58,998 INFO L175 Difference]: Start difference. First operand has 90 places, 95 transitions, 588 flow. Second operand 7 states and 237 transitions. [2024-05-12 13:26:58,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 156 transitions, 1048 flow [2024-05-12 13:26:59,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 156 transitions, 1001 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-05-12 13:26:59,124 INFO L231 Difference]: Finished difference. Result has 94 places, 98 transitions, 656 flow [2024-05-12 13:26:59,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=656, PETRI_PLACES=94, PETRI_TRANSITIONS=98} [2024-05-12 13:26:59,126 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 28 predicate places. [2024-05-12 13:26:59,126 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 98 transitions, 656 flow [2024-05-12 13:26:59,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.625) internal successors, (149), 8 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:59,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:26:59,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:26:59,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-05-12 13:26:59,127 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:26:59,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:26:59,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1156982966, now seen corresponding path program 1 times [2024-05-12 13:26:59,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:26:59,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255103704] [2024-05-12 13:26:59,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:26:59,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:26:59,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:26:59,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:26:59,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:26:59,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255103704] [2024-05-12 13:26:59,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255103704] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:26:59,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:26:59,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:26:59,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170085213] [2024-05-12 13:26:59,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:26:59,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:26:59,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:26:59,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:26:59,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:27:00,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-05-12 13:27:00,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 98 transitions, 656 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:00,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:27:00,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-05-12 13:27:00,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:27:02,939 INFO L124 PetriNetUnfolderBase]: 21265/28899 cut-off events. [2024-05-12 13:27:02,939 INFO L125 PetriNetUnfolderBase]: For 136368/136368 co-relation queries the response was YES. [2024-05-12 13:27:03,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106766 conditions, 28899 events. 21265/28899 cut-off events. For 136368/136368 co-relation queries the response was YES. Maximal size of possible extension queue 949. Compared 170017 event pairs, 7974 based on Foata normal form. 4/28896 useless extension candidates. Maximal degree in co-relation 106734. Up to 28187 conditions per place. [2024-05-12 13:27:03,229 INFO L140 encePairwiseOnDemand]: 48/58 looper letters, 113 selfloop transitions, 21 changer transitions 4/150 dead transitions. [2024-05-12 13:27:03,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 150 transitions, 1158 flow [2024-05-12 13:27:03,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:27:03,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:27:03,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 195 transitions. [2024-05-12 13:27:03,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5603448275862069 [2024-05-12 13:27:03,231 INFO L175 Difference]: Start difference. First operand has 94 places, 98 transitions, 656 flow. Second operand 6 states and 195 transitions. [2024-05-12 13:27:03,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 150 transitions, 1158 flow [2024-05-12 13:27:03,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 150 transitions, 1079 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-05-12 13:27:03,402 INFO L231 Difference]: Finished difference. Result has 95 places, 105 transitions, 714 flow [2024-05-12 13:27:03,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=714, PETRI_PLACES=95, PETRI_TRANSITIONS=105} [2024-05-12 13:27:03,403 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 29 predicate places. [2024-05-12 13:27:03,403 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 105 transitions, 714 flow [2024-05-12 13:27:03,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:03,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:27:03,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:27:03,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-05-12 13:27:03,404 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:27:03,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:27:03,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1629077655, now seen corresponding path program 1 times [2024-05-12 13:27:03,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:27:03,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205804719] [2024-05-12 13:27:03,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:27:03,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:27:03,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:27:04,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:27:04,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:27:04,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205804719] [2024-05-12 13:27:04,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205804719] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:27:04,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:27:04,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:27:04,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619063317] [2024-05-12 13:27:04,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:27:04,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:27:04,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:27:04,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:27:04,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:27:04,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-05-12 13:27:04,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 105 transitions, 714 flow. Second operand has 9 states, 9 states have (on average 17.444444444444443) internal successors, (157), 9 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:04,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:27:04,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-05-12 13:27:04,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:27:07,948 INFO L124 PetriNetUnfolderBase]: 18807/25619 cut-off events. [2024-05-12 13:27:07,948 INFO L125 PetriNetUnfolderBase]: For 148585/148585 co-relation queries the response was YES. [2024-05-12 13:27:08,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99956 conditions, 25619 events. 18807/25619 cut-off events. For 148585/148585 co-relation queries the response was YES. Maximal size of possible extension queue 910. Compared 149534 event pairs, 6738 based on Foata normal form. 6/25612 useless extension candidates. Maximal degree in co-relation 99923. Up to 24732 conditions per place. [2024-05-12 13:27:08,111 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 124 selfloop transitions, 44 changer transitions 0/180 dead transitions. [2024-05-12 13:27:08,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 180 transitions, 1321 flow [2024-05-12 13:27:08,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:27:08,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:27:08,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 255 transitions. [2024-05-12 13:27:08,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5495689655172413 [2024-05-12 13:27:08,113 INFO L175 Difference]: Start difference. First operand has 95 places, 105 transitions, 714 flow. Second operand 8 states and 255 transitions. [2024-05-12 13:27:08,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 180 transitions, 1321 flow [2024-05-12 13:27:08,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 180 transitions, 1279 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-05-12 13:27:08,213 INFO L231 Difference]: Finished difference. Result has 101 places, 120 transitions, 919 flow [2024-05-12 13:27:08,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=919, PETRI_PLACES=101, PETRI_TRANSITIONS=120} [2024-05-12 13:27:08,214 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 35 predicate places. [2024-05-12 13:27:08,214 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 120 transitions, 919 flow [2024-05-12 13:27:08,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.444444444444443) internal successors, (157), 9 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:08,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:27:08,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:27:08,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-05-12 13:27:08,215 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:27:08,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:27:08,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1925060639, now seen corresponding path program 2 times [2024-05-12 13:27:08,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:27:08,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930347265] [2024-05-12 13:27:08,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:27:08,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:27:08,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:27:09,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:27:09,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:27:09,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930347265] [2024-05-12 13:27:09,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930347265] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:27:09,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:27:09,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:27:09,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165604884] [2024-05-12 13:27:09,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:27:09,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:27:09,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:27:09,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:27:09,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:27:09,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-05-12 13:27:09,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 120 transitions, 919 flow. Second operand has 9 states, 9 states have (on average 17.444444444444443) internal successors, (157), 9 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:09,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:27:09,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-05-12 13:27:09,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:27:12,360 INFO L124 PetriNetUnfolderBase]: 18960/25858 cut-off events. [2024-05-12 13:27:12,361 INFO L125 PetriNetUnfolderBase]: For 167868/167868 co-relation queries the response was YES. [2024-05-12 13:27:12,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104432 conditions, 25858 events. 18960/25858 cut-off events. For 167868/167868 co-relation queries the response was YES. Maximal size of possible extension queue 917. Compared 151051 event pairs, 6006 based on Foata normal form. 6/25850 useless extension candidates. Maximal degree in co-relation 104396. Up to 24514 conditions per place. [2024-05-12 13:27:12,590 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 128 selfloop transitions, 55 changer transitions 0/195 dead transitions. [2024-05-12 13:27:12,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 195 transitions, 1633 flow [2024-05-12 13:27:12,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:27:12,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:27:12,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 262 transitions. [2024-05-12 13:27:12,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5646551724137931 [2024-05-12 13:27:12,592 INFO L175 Difference]: Start difference. First operand has 101 places, 120 transitions, 919 flow. Second operand 8 states and 262 transitions. [2024-05-12 13:27:12,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 195 transitions, 1633 flow [2024-05-12 13:27:12,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 195 transitions, 1545 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-05-12 13:27:12,750 INFO L231 Difference]: Finished difference. Result has 107 places, 128 transitions, 1094 flow [2024-05-12 13:27:12,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1094, PETRI_PLACES=107, PETRI_TRANSITIONS=128} [2024-05-12 13:27:12,751 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 41 predicate places. [2024-05-12 13:27:12,751 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 128 transitions, 1094 flow [2024-05-12 13:27:12,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.444444444444443) internal successors, (157), 9 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:12,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:27:12,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:27:12,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-05-12 13:27:12,752 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:27:12,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:27:12,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1931555759, now seen corresponding path program 3 times [2024-05-12 13:27:12,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:27:12,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7699960] [2024-05-12 13:27:12,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:27:12,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:27:12,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:27:13,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:27:13,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:27:13,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7699960] [2024-05-12 13:27:13,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7699960] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:27:13,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:27:13,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:27:13,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941540374] [2024-05-12 13:27:13,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:27:13,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:27:13,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:27:13,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:27:13,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:27:13,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-05-12 13:27:14,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 128 transitions, 1094 flow. Second operand has 9 states, 9 states have (on average 17.444444444444443) internal successors, (157), 9 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:14,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:27:14,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-05-12 13:27:14,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:27:17,072 INFO L124 PetriNetUnfolderBase]: 18945/25837 cut-off events. [2024-05-12 13:27:17,072 INFO L125 PetriNetUnfolderBase]: For 193987/193987 co-relation queries the response was YES. [2024-05-12 13:27:17,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107406 conditions, 25837 events. 18945/25837 cut-off events. For 193987/193987 co-relation queries the response was YES. Maximal size of possible extension queue 917. Compared 151277 event pairs, 6762 based on Foata normal form. 6/25829 useless extension candidates. Maximal degree in co-relation 107368. Up to 24930 conditions per place. [2024-05-12 13:27:17,589 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 133 selfloop transitions, 44 changer transitions 0/189 dead transitions. [2024-05-12 13:27:17,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 189 transitions, 1601 flow [2024-05-12 13:27:17,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:27:17,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:27:17,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 255 transitions. [2024-05-12 13:27:17,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5495689655172413 [2024-05-12 13:27:17,593 INFO L175 Difference]: Start difference. First operand has 107 places, 128 transitions, 1094 flow. Second operand 8 states and 255 transitions. [2024-05-12 13:27:17,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 189 transitions, 1601 flow [2024-05-12 13:27:17,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 189 transitions, 1490 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-05-12 13:27:17,842 INFO L231 Difference]: Finished difference. Result has 112 places, 129 transitions, 1102 flow [2024-05-12 13:27:17,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=985, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1102, PETRI_PLACES=112, PETRI_TRANSITIONS=129} [2024-05-12 13:27:17,843 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 46 predicate places. [2024-05-12 13:27:17,844 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 129 transitions, 1102 flow [2024-05-12 13:27:17,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.444444444444443) internal successors, (157), 9 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:17,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:27:17,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:27:17,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-05-12 13:27:17,844 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:27:17,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:27:17,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1145555126, now seen corresponding path program 2 times [2024-05-12 13:27:17,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:27:17,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892027389] [2024-05-12 13:27:17,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:27:17,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:27:17,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:27:18,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:27:18,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:27:18,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892027389] [2024-05-12 13:27:18,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892027389] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:27:18,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:27:18,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:27:18,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097788818] [2024-05-12 13:27:18,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:27:18,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:27:18,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:27:18,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:27:18,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:27:18,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-05-12 13:27:18,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 129 transitions, 1102 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:18,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:27:18,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-05-12 13:27:18,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:27:22,037 INFO L124 PetriNetUnfolderBase]: 18931/25831 cut-off events. [2024-05-12 13:27:22,037 INFO L125 PetriNetUnfolderBase]: For 204244/204258 co-relation queries the response was YES. [2024-05-12 13:27:22,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108167 conditions, 25831 events. 18931/25831 cut-off events. For 204244/204258 co-relation queries the response was YES. Maximal size of possible extension queue 915. Compared 150902 event pairs, 6645 based on Foata normal form. 14/25839 useless extension candidates. Maximal degree in co-relation 108126. Up to 25177 conditions per place. [2024-05-12 13:27:22,260 INFO L140 encePairwiseOnDemand]: 48/58 looper letters, 128 selfloop transitions, 21 changer transitions 0/161 dead transitions. [2024-05-12 13:27:22,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 161 transitions, 1474 flow [2024-05-12 13:27:22,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:27:22,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:27:22,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2024-05-12 13:27:22,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5229885057471264 [2024-05-12 13:27:22,262 INFO L175 Difference]: Start difference. First operand has 112 places, 129 transitions, 1102 flow. Second operand 6 states and 182 transitions. [2024-05-12 13:27:22,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 161 transitions, 1474 flow [2024-05-12 13:27:22,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 161 transitions, 1350 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-05-12 13:27:22,479 INFO L231 Difference]: Finished difference. Result has 113 places, 129 transitions, 1029 flow [2024-05-12 13:27:22,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1029, PETRI_PLACES=113, PETRI_TRANSITIONS=129} [2024-05-12 13:27:22,479 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 47 predicate places. [2024-05-12 13:27:22,480 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 129 transitions, 1029 flow [2024-05-12 13:27:22,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:22,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:27:22,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:27:22,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-05-12 13:27:22,480 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:27:22,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:27:22,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1151263094, now seen corresponding path program 1 times [2024-05-12 13:27:22,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:27:22,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513685819] [2024-05-12 13:27:22,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:27:22,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:27:22,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:27:23,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:27:23,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:27:23,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513685819] [2024-05-12 13:27:23,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513685819] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:27:23,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:27:23,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:27:23,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425193893] [2024-05-12 13:27:23,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:27:23,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:27:23,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:27:23,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:27:23,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:27:23,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 58 [2024-05-12 13:27:23,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 129 transitions, 1029 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:23,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:27:23,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 58 [2024-05-12 13:27:23,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand