./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix057_power.oepc_pso.oepc_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix057_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix057_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix057_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 03:37:59,100 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:37:59,189 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:37:59,196 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:37:59,196 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:37:59,228 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:37:59,228 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:37:59,229 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:37:59,229 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:37:59,234 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:37:59,235 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:37:59,235 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:37:59,236 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:37:59,238 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:37:59,238 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:37:59,238 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:37:59,238 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:37:59,239 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:37:59,239 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:37:59,239 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:37:59,239 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:37:59,240 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:37:59,240 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:37:59,240 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:37:59,241 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:37:59,241 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:37:59,241 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:37:59,242 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:37:59,242 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:37:59,242 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:37:59,243 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:37:59,244 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:37:59,244 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:37:59,244 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:37:59,244 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:37:59,244 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:37:59,245 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:37:59,245 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:37:59,245 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:37:59,245 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:37:59,245 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:37:59,246 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:37:59,246 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:37:59,246 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:37:59,490 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:37:59,518 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:37:59,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:37:59,521 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:37:59,522 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:37:59,523 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix057_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-28 03:37:59,779 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:37:59,779 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:37:59,780 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix057_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 03:38:00,845 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:38:01,088 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:38:01,089 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix057_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 03:38:01,104 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d66ebac5/8c0d2863a362489684147b1833ec6197/FLAG4c1c57ffb [2024-06-28 03:38:01,121 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d66ebac5/8c0d2863a362489684147b1833ec6197 [2024-06-28 03:38:01,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:38:01,124 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:38:01,126 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:38:01,126 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:38:01,131 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:38:01,132 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:37:59" (1/2) ... [2024-06-28 03:38:01,133 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@631dce25 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:38:01, skipping insertion in model container [2024-06-28 03:38:01,133 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:37:59" (1/2) ... [2024-06-28 03:38:01,134 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@62225a5c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:38:01, skipping insertion in model container [2024-06-28 03:38:01,134 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:38:01" (2/2) ... [2024-06-28 03:38:01,135 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@631dce25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:38:01, skipping insertion in model container [2024-06-28 03:38:01,135 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:38:01" (2/2) ... [2024-06-28 03:38:01,135 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:38:01,246 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:38:01,248 INFO L97 edCorrectnessWitness]: Location invariant before [L864-L864] (((((((((((((((((((! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff0_thd4 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$r_buff1_thd4 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((x == 0 || x == 1) || x == 2)) [2024-06-28 03:38:01,248 INFO L97 edCorrectnessWitness]: Location invariant before [L862-L862] (((((((((((((((((((! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff0_thd4 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$r_buff1_thd4 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((x == 0 || x == 1) || x == 2)) [2024-06-28 03:38:01,248 INFO L97 edCorrectnessWitness]: Location invariant before [L860-L860] (((((((((((((((((((! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff0_thd4 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$r_buff1_thd4 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((x == 0 || x == 1) || x == 2)) [2024-06-28 03:38:01,249 INFO L97 edCorrectnessWitness]: Location invariant before [L865-L865] (((((((((((((((((((! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff0_thd4 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$r_buff1_thd4 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((x == 0 || x == 1) || x == 2)) [2024-06-28 03:38:01,249 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:38:01,250 INFO L106 edCorrectnessWitness]: ghost_update [L858-L858] multithreaded = 1; [2024-06-28 03:38:01,345 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:38:01,666 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:38:01,675 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:38:01,832 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:38:01,867 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:38:01,867 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:38:01 WrapperNode [2024-06-28 03:38:01,867 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:38:01,869 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:38:01,869 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:38:01,869 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:38:01,875 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:38:01" (1/1) ... [2024-06-28 03:38:01,892 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:38:01" (1/1) ... [2024-06-28 03:38:01,929 INFO L138 Inliner]: procedures = 176, calls = 52, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 136 [2024-06-28 03:38:01,929 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:38:01,930 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:38:01,930 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:38:01,930 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:38:01,941 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:38:01" (1/1) ... [2024-06-28 03:38:01,941 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:38:01" (1/1) ... [2024-06-28 03:38:01,945 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:38:01" (1/1) ... [2024-06-28 03:38:01,962 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 03:38:01,973 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:38:01" (1/1) ... [2024-06-28 03:38:01,973 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:38:01" (1/1) ... [2024-06-28 03:38:01,990 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:38:01" (1/1) ... [2024-06-28 03:38:02,006 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:38:01" (1/1) ... [2024-06-28 03:38:02,008 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:38:01" (1/1) ... [2024-06-28 03:38:02,024 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:38:01" (1/1) ... [2024-06-28 03:38:02,028 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:38:02,029 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:38:02,029 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:38:02,030 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:38:02,030 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:38:01" (1/1) ... [2024-06-28 03:38:02,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:38:02,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:38:02,070 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 03:38:02,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 03:38:02,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:38:02,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:38:02,117 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:38:02,117 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:38:02,117 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:38:02,117 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:38:02,118 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 03:38:02,118 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 03:38:02,118 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-28 03:38:02,118 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-28 03:38:02,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:38:02,119 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:38:02,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:38:02,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:38:02,121 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 03:38:02,298 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:38:02,300 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:38:02,696 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:38:02,696 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:38:02,898 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:38:02,899 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:38:02,899 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:38:02 BoogieIcfgContainer [2024-06-28 03:38:02,900 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:38:02,902 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:38:02,903 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:38:02,905 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:38:02,906 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:37:59" (1/4) ... [2024-06-28 03:38:02,906 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@648332b8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:38:02, skipping insertion in model container [2024-06-28 03:38:02,906 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:38:01" (2/4) ... [2024-06-28 03:38:02,907 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@648332b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:38:02, skipping insertion in model container [2024-06-28 03:38:02,907 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:38:01" (3/4) ... [2024-06-28 03:38:02,908 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@648332b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:38:02, skipping insertion in model container [2024-06-28 03:38:02,908 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:38:02" (4/4) ... [2024-06-28 03:38:02,909 INFO L112 eAbstractionObserver]: Analyzing ICFG mix057_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 03:38:02,924 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:38:02,924 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 03:38:02,924 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:38:02,977 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:38:03,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 51 transitions, 118 flow [2024-06-28 03:38:03,049 INFO L124 PetriNetUnfolderBase]: 0/47 cut-off events. [2024-06-28 03:38:03,049 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:38:03,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 47 events. 0/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 81 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 03:38:03,051 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 51 transitions, 118 flow [2024-06-28 03:38:03,055 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 41 transitions, 94 flow [2024-06-28 03:38:03,069 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:38:03,076 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;@57bfba3d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:38:03,077 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-28 03:38:03,081 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:38:03,081 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 03:38:03,081 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:38:03,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:03,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:38:03,083 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:38:03,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:03,087 INFO L85 PathProgramCache]: Analyzing trace with hash 392035071, now seen corresponding path program 1 times [2024-06-28 03:38:03,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:03,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68710607] [2024-06-28 03:38:03,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:03,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:03,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:04,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:04,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:04,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68710607] [2024-06-28 03:38:04,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68710607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:04,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:04,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:38:04,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870200128] [2024-06-28 03:38:04,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:04,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:38:04,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:04,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:38:04,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:38:04,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-28 03:38:04,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 41 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:04,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:04,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-28 03:38:04,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:06,710 INFO L124 PetriNetUnfolderBase]: 14075/18997 cut-off events. [2024-06-28 03:38:06,711 INFO L125 PetriNetUnfolderBase]: For 256/256 co-relation queries the response was YES. [2024-06-28 03:38:06,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38513 conditions, 18997 events. 14075/18997 cut-off events. For 256/256 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 97401 event pairs, 11070 based on Foata normal form. 1/18739 useless extension candidates. Maximal degree in co-relation 38500. Up to 18981 conditions per place. [2024-06-28 03:38:06,851 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 45 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2024-06-28 03:38:06,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 231 flow [2024-06-28 03:38:06,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:38:06,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:38:06,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2024-06-28 03:38:06,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5882352941176471 [2024-06-28 03:38:06,865 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 94 flow. Second operand 3 states and 90 transitions. [2024-06-28 03:38:06,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 231 flow [2024-06-28 03:38:06,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 55 transitions, 224 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 03:38:06,873 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 129 flow [2024-06-28 03:38:06,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2024-06-28 03:38:06,880 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -1 predicate places. [2024-06-28 03:38:06,880 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 129 flow [2024-06-28 03:38:06,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:06,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:06,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:06,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:38:06,882 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:38:06,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:06,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1211389410, now seen corresponding path program 1 times [2024-06-28 03:38:06,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:06,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262015807] [2024-06-28 03:38:06,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:06,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:06,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:07,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:07,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:07,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262015807] [2024-06-28 03:38:07,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262015807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:07,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:07,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:38:07,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056572409] [2024-06-28 03:38:07,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:07,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:38:07,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:07,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:38:07,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:38:07,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-28 03:38:07,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:07,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:07,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-28 03:38:07,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:09,792 INFO L124 PetriNetUnfolderBase]: 14065/18983 cut-off events. [2024-06-28 03:38:09,792 INFO L125 PetriNetUnfolderBase]: For 3370/3370 co-relation queries the response was YES. [2024-06-28 03:38:09,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43116 conditions, 18983 events. 14065/18983 cut-off events. For 3370/3370 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 97481 event pairs, 10115 based on Foata normal form. 4/18983 useless extension candidates. Maximal degree in co-relation 43104. Up to 18946 conditions per place. [2024-06-28 03:38:09,920 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 55 selfloop transitions, 9 changer transitions 0/69 dead transitions. [2024-06-28 03:38:09,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 69 transitions, 323 flow [2024-06-28 03:38:09,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:38:09,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:38:09,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-06-28 03:38:09,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5686274509803921 [2024-06-28 03:38:09,925 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 129 flow. Second operand 4 states and 116 transitions. [2024-06-28 03:38:09,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 69 transitions, 323 flow [2024-06-28 03:38:09,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 69 transitions, 318 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:38:09,929 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 177 flow [2024-06-28 03:38:09,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2024-06-28 03:38:09,930 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 2 predicate places. [2024-06-28 03:38:09,931 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 177 flow [2024-06-28 03:38:09,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:09,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:09,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:09,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:38:09,935 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:38:09,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:09,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1101634934, now seen corresponding path program 1 times [2024-06-28 03:38:09,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:09,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591729324] [2024-06-28 03:38:09,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:09,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:09,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:10,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:10,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:10,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591729324] [2024-06-28 03:38:10,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591729324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:10,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:10,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 03:38:10,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883942090] [2024-06-28 03:38:10,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:10,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 03:38:10,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:10,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 03:38:10,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 03:38:10,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-28 03:38:10,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 177 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:10,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:10,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-28 03:38:10,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:12,912 INFO L124 PetriNetUnfolderBase]: 14083/19010 cut-off events. [2024-06-28 03:38:12,913 INFO L125 PetriNetUnfolderBase]: For 9698/9698 co-relation queries the response was YES. [2024-06-28 03:38:12,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47791 conditions, 19010 events. 14083/19010 cut-off events. For 9698/9698 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 97466 event pairs, 8523 based on Foata normal form. 7/19011 useless extension candidates. Maximal degree in co-relation 47777. Up to 18867 conditions per place. [2024-06-28 03:38:13,053 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 73 selfloop transitions, 21 changer transitions 0/99 dead transitions. [2024-06-28 03:38:13,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 99 transitions, 539 flow [2024-06-28 03:38:13,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:38:13,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:38:13,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 152 transitions. [2024-06-28 03:38:13,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.596078431372549 [2024-06-28 03:38:13,058 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 177 flow. Second operand 5 states and 152 transitions. [2024-06-28 03:38:13,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 99 transitions, 539 flow [2024-06-28 03:38:13,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 99 transitions, 520 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 03:38:13,066 INFO L231 Difference]: Finished difference. Result has 61 places, 63 transitions, 308 flow [2024-06-28 03:38:13,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=308, PETRI_PLACES=61, PETRI_TRANSITIONS=63} [2024-06-28 03:38:13,068 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 7 predicate places. [2024-06-28 03:38:13,068 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 63 transitions, 308 flow [2024-06-28 03:38:13,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:13,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:13,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:13,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:38:13,070 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:38:13,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:13,070 INFO L85 PathProgramCache]: Analyzing trace with hash 345058197, now seen corresponding path program 1 times [2024-06-28 03:38:13,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:13,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329910448] [2024-06-28 03:38:13,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:13,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:13,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:14,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:14,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:14,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329910448] [2024-06-28 03:38:14,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329910448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:14,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:14,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:38:14,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138320928] [2024-06-28 03:38:14,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:14,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:38:14,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:14,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:38:14,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:38:14,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-28 03:38:14,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 63 transitions, 308 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 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) [2024-06-28 03:38:14,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:14,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-28 03:38:14,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:15,972 INFO L124 PetriNetUnfolderBase]: 14101/19035 cut-off events. [2024-06-28 03:38:15,972 INFO L125 PetriNetUnfolderBase]: For 22858/22864 co-relation queries the response was YES. [2024-06-28 03:38:16,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55053 conditions, 19035 events. 14101/19035 cut-off events. For 22858/22864 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 97649 event pairs, 7568 based on Foata normal form. 11/19040 useless extension candidates. Maximal degree in co-relation 55036. Up to 18853 conditions per place. [2024-06-28 03:38:16,084 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 83 selfloop transitions, 26 changer transitions 0/114 dead transitions. [2024-06-28 03:38:16,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 114 transitions, 708 flow [2024-06-28 03:38:16,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:38:16,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:38:16,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 179 transitions. [2024-06-28 03:38:16,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5849673202614379 [2024-06-28 03:38:16,086 INFO L175 Difference]: Start difference. First operand has 61 places, 63 transitions, 308 flow. Second operand 6 states and 179 transitions. [2024-06-28 03:38:16,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 114 transitions, 708 flow [2024-06-28 03:38:16,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 114 transitions, 696 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-28 03:38:16,097 INFO L231 Difference]: Finished difference. Result has 67 places, 68 transitions, 402 flow [2024-06-28 03:38:16,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=402, PETRI_PLACES=67, PETRI_TRANSITIONS=68} [2024-06-28 03:38:16,099 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 13 predicate places. [2024-06-28 03:38:16,099 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 68 transitions, 402 flow [2024-06-28 03:38:16,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 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) [2024-06-28 03:38:16,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:16,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:16,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:38:16,100 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:38:16,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:16,101 INFO L85 PathProgramCache]: Analyzing trace with hash 2109249141, now seen corresponding path program 1 times [2024-06-28 03:38:16,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:16,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52239955] [2024-06-28 03:38:16,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:16,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:16,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:17,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:17,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:17,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52239955] [2024-06-28 03:38:17,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52239955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:17,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:17,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:38:17,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563225318] [2024-06-28 03:38:17,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:17,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:38:17,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:17,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:38:17,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:38:17,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-28 03:38:17,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 68 transitions, 402 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:17,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:17,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-28 03:38:17,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:18,920 INFO L124 PetriNetUnfolderBase]: 14130/19078 cut-off events. [2024-06-28 03:38:18,920 INFO L125 PetriNetUnfolderBase]: For 36256/36262 co-relation queries the response was YES. [2024-06-28 03:38:18,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60718 conditions, 19078 events. 14130/19078 cut-off events. For 36256/36262 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 98013 event pairs, 6467 based on Foata normal form. 18/19090 useless extension candidates. Maximal degree in co-relation 60698. Up to 18818 conditions per place. [2024-06-28 03:38:19,058 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 90 selfloop transitions, 30 changer transitions 0/125 dead transitions. [2024-06-28 03:38:19,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 125 transitions, 852 flow [2024-06-28 03:38:19,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:38:19,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:38:19,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 202 transitions. [2024-06-28 03:38:19,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5658263305322129 [2024-06-28 03:38:19,065 INFO L175 Difference]: Start difference. First operand has 67 places, 68 transitions, 402 flow. Second operand 7 states and 202 transitions. [2024-06-28 03:38:19,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 125 transitions, 852 flow [2024-06-28 03:38:19,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 125 transitions, 786 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 03:38:19,079 INFO L231 Difference]: Finished difference. Result has 69 places, 71 transitions, 441 flow [2024-06-28 03:38:19,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=441, PETRI_PLACES=69, PETRI_TRANSITIONS=71} [2024-06-28 03:38:19,083 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 15 predicate places. [2024-06-28 03:38:19,083 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 71 transitions, 441 flow [2024-06-28 03:38:19,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:19,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:19,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:19,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:38:19,084 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:38:19,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:19,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1673469437, now seen corresponding path program 1 times [2024-06-28 03:38:19,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:19,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050361005] [2024-06-28 03:38:19,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:19,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:19,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:19,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:19,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050361005] [2024-06-28 03:38:19,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050361005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:19,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:19,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:38:19,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536461359] [2024-06-28 03:38:19,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:19,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:38:19,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:19,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:38:19,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:38:19,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-28 03:38:19,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 71 transitions, 441 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:19,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:19,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-28 03:38:19,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:21,668 INFO L124 PetriNetUnfolderBase]: 14121/19064 cut-off events. [2024-06-28 03:38:21,669 INFO L125 PetriNetUnfolderBase]: For 51278/51278 co-relation queries the response was YES. [2024-06-28 03:38:21,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65136 conditions, 19064 events. 14121/19064 cut-off events. For 51278/51278 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 97995 event pairs, 7483 based on Foata normal form. 3/19063 useless extension candidates. Maximal degree in co-relation 65114. Up to 19033 conditions per place. [2024-06-28 03:38:21,830 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 74 selfloop transitions, 10 changer transitions 0/88 dead transitions. [2024-06-28 03:38:21,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 88 transitions, 653 flow [2024-06-28 03:38:21,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:38:21,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:38:21,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-06-28 03:38:21,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470588235294118 [2024-06-28 03:38:21,833 INFO L175 Difference]: Start difference. First operand has 69 places, 71 transitions, 441 flow. Second operand 5 states and 114 transitions. [2024-06-28 03:38:21,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 88 transitions, 653 flow [2024-06-28 03:38:21,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 88 transitions, 566 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 03:38:21,853 INFO L231 Difference]: Finished difference. Result has 69 places, 71 transitions, 385 flow [2024-06-28 03:38:21,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=385, PETRI_PLACES=69, PETRI_TRANSITIONS=71} [2024-06-28 03:38:21,856 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 15 predicate places. [2024-06-28 03:38:21,856 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 71 transitions, 385 flow [2024-06-28 03:38:21,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:21,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:21,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:21,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:38:21,857 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:38:21,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:21,858 INFO L85 PathProgramCache]: Analyzing trace with hash 313008961, now seen corresponding path program 1 times [2024-06-28 03:38:21,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:21,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573764948] [2024-06-28 03:38:21,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:21,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:21,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:22,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:22,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:22,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573764948] [2024-06-28 03:38:22,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573764948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:22,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:22,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:38:22,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250379326] [2024-06-28 03:38:22,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:22,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:38:22,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:22,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:38:22,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:38:22,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-28 03:38:22,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 71 transitions, 385 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:22,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:22,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-28 03:38:22,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:24,949 INFO L124 PetriNetUnfolderBase]: 14145/19097 cut-off events. [2024-06-28 03:38:24,949 INFO L125 PetriNetUnfolderBase]: For 58241/58241 co-relation queries the response was YES. [2024-06-28 03:38:24,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66246 conditions, 19097 events. 14145/19097 cut-off events. For 58241/58241 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 97871 event pairs, 7102 based on Foata normal form. 10/19102 useless extension candidates. Maximal degree in co-relation 66222. Up to 18955 conditions per place. [2024-06-28 03:38:25,031 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 88 selfloop transitions, 24 changer transitions 0/116 dead transitions. [2024-06-28 03:38:25,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 116 transitions, 839 flow [2024-06-28 03:38:25,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:38:25,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:38:25,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-06-28 03:38:25,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4369747899159664 [2024-06-28 03:38:25,033 INFO L175 Difference]: Start difference. First operand has 69 places, 71 transitions, 385 flow. Second operand 7 states and 156 transitions. [2024-06-28 03:38:25,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 116 transitions, 839 flow [2024-06-28 03:38:25,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 116 transitions, 807 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 03:38:25,047 INFO L231 Difference]: Finished difference. Result has 75 places, 87 transitions, 562 flow [2024-06-28 03:38:25,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=562, PETRI_PLACES=75, PETRI_TRANSITIONS=87} [2024-06-28 03:38:25,048 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 21 predicate places. [2024-06-28 03:38:25,048 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 87 transitions, 562 flow [2024-06-28 03:38:25,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:25,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:25,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:25,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:38:25,048 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:38:25,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:25,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1113129820, now seen corresponding path program 1 times [2024-06-28 03:38:25,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:25,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084910878] [2024-06-28 03:38:25,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:25,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:25,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:25,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:25,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084910878] [2024-06-28 03:38:25,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084910878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:25,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:25,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:38:25,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965780600] [2024-06-28 03:38:25,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:25,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:38:25,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:25,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:38:25,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:38:25,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-28 03:38:25,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 87 transitions, 562 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:25,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:25,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-28 03:38:25,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:27,643 INFO L124 PetriNetUnfolderBase]: 14294/19315 cut-off events. [2024-06-28 03:38:27,643 INFO L125 PetriNetUnfolderBase]: For 83203/83215 co-relation queries the response was YES. [2024-06-28 03:38:27,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74161 conditions, 19315 events. 14294/19315 cut-off events. For 83203/83215 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 98733 event pairs, 7290 based on Foata normal form. 14/19323 useless extension candidates. Maximal degree in co-relation 74134. Up to 19162 conditions per place. [2024-06-28 03:38:27,767 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 101 selfloop transitions, 27 changer transitions 0/132 dead transitions. [2024-06-28 03:38:27,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 132 transitions, 1051 flow [2024-06-28 03:38:27,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:38:27,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:38:27,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-06-28 03:38:27,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43137254901960786 [2024-06-28 03:38:27,768 INFO L175 Difference]: Start difference. First operand has 75 places, 87 transitions, 562 flow. Second operand 7 states and 154 transitions. [2024-06-28 03:38:27,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 132 transitions, 1051 flow [2024-06-28 03:38:27,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 132 transitions, 1023 flow, removed 13 selfloop flow, removed 1 redundant places. [2024-06-28 03:38:27,825 INFO L231 Difference]: Finished difference. Result has 82 places, 103 transitions, 746 flow [2024-06-28 03:38:27,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=746, PETRI_PLACES=82, PETRI_TRANSITIONS=103} [2024-06-28 03:38:27,827 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 28 predicate places. [2024-06-28 03:38:27,827 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 103 transitions, 746 flow [2024-06-28 03:38:27,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:27,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:27,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:27,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:38:27,828 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:38:27,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:27,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1886413660, now seen corresponding path program 2 times [2024-06-28 03:38:27,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:27,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821996057] [2024-06-28 03:38:27,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:27,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:27,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:28,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:28,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:28,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821996057] [2024-06-28 03:38:28,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821996057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:28,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:28,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:38:28,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206173736] [2024-06-28 03:38:28,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:28,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:38:28,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:28,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:38:28,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:38:28,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-28 03:38:28,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 103 transitions, 746 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:28,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:28,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-28 03:38:28,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:30,377 INFO L124 PetriNetUnfolderBase]: 14279/19291 cut-off events. [2024-06-28 03:38:30,377 INFO L125 PetriNetUnfolderBase]: For 91859/91859 co-relation queries the response was YES. [2024-06-28 03:38:30,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75101 conditions, 19291 events. 14279/19291 cut-off events. For 91859/91859 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 98654 event pairs, 7283 based on Foata normal form. 3/19290 useless extension candidates. Maximal degree in co-relation 75070. Up to 19234 conditions per place. [2024-06-28 03:38:30,492 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 108 selfloop transitions, 15 changer transitions 0/127 dead transitions. [2024-06-28 03:38:30,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 127 transitions, 1062 flow [2024-06-28 03:38:30,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:38:30,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:38:30,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-06-28 03:38:30,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4411764705882353 [2024-06-28 03:38:30,493 INFO L175 Difference]: Start difference. First operand has 82 places, 103 transitions, 746 flow. Second operand 6 states and 135 transitions. [2024-06-28 03:38:30,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 127 transitions, 1062 flow [2024-06-28 03:38:30,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 127 transitions, 1043 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-28 03:38:30,539 INFO L231 Difference]: Finished difference. Result has 86 places, 104 transitions, 780 flow [2024-06-28 03:38:30,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=727, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=780, PETRI_PLACES=86, PETRI_TRANSITIONS=104} [2024-06-28 03:38:30,540 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 32 predicate places. [2024-06-28 03:38:30,540 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 104 transitions, 780 flow [2024-06-28 03:38:30,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:30,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:30,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:30,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:38:30,541 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:38:30,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:30,541 INFO L85 PathProgramCache]: Analyzing trace with hash -731051458, now seen corresponding path program 3 times [2024-06-28 03:38:30,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:30,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814018866] [2024-06-28 03:38:30,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:30,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:30,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:31,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:31,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:31,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814018866] [2024-06-28 03:38:31,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814018866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:31,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:31,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:38:31,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111609183] [2024-06-28 03:38:31,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:31,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:38:31,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:31,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:38:31,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:38:31,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-28 03:38:31,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 104 transitions, 780 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:31,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:31,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-28 03:38:31,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:33,174 INFO L124 PetriNetUnfolderBase]: 14384/19437 cut-off events. [2024-06-28 03:38:33,174 INFO L125 PetriNetUnfolderBase]: For 105481/105493 co-relation queries the response was YES. [2024-06-28 03:38:33,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77480 conditions, 19437 events. 14384/19437 cut-off events. For 105481/105493 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 99375 event pairs, 7267 based on Foata normal form. 14/19445 useless extension candidates. Maximal degree in co-relation 77447. Up to 19128 conditions per place. [2024-06-28 03:38:33,271 INFO L140 encePairwiseOnDemand]: 36/51 looper letters, 98 selfloop transitions, 60 changer transitions 0/162 dead transitions. [2024-06-28 03:38:33,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 162 transitions, 1411 flow [2024-06-28 03:38:33,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:38:33,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:38:33,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-28 03:38:33,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4649859943977591 [2024-06-28 03:38:33,273 INFO L175 Difference]: Start difference. First operand has 86 places, 104 transitions, 780 flow. Second operand 7 states and 166 transitions. [2024-06-28 03:38:33,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 162 transitions, 1411 flow [2024-06-28 03:38:33,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 162 transitions, 1362 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 03:38:33,336 INFO L231 Difference]: Finished difference. Result has 91 places, 128 transitions, 1136 flow [2024-06-28 03:38:33,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=743, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1136, PETRI_PLACES=91, PETRI_TRANSITIONS=128} [2024-06-28 03:38:33,336 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 37 predicate places. [2024-06-28 03:38:33,337 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 128 transitions, 1136 flow [2024-06-28 03:38:33,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:33,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:33,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:33,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:38:33,337 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:38:33,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:33,338 INFO L85 PathProgramCache]: Analyzing trace with hash 2109637782, now seen corresponding path program 1 times [2024-06-28 03:38:33,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:33,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219506590] [2024-06-28 03:38:33,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:33,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:33,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:34,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:34,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:34,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219506590] [2024-06-28 03:38:34,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219506590] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:34,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:34,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:38:34,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531158181] [2024-06-28 03:38:34,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:34,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:38:34,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:34,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:38:34,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:38:34,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-28 03:38:34,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 128 transitions, 1136 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:34,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:34,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-28 03:38:34,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:36,242 INFO L124 PetriNetUnfolderBase]: 14802/19996 cut-off events. [2024-06-28 03:38:36,242 INFO L125 PetriNetUnfolderBase]: For 124320/124329 co-relation queries the response was YES. [2024-06-28 03:38:36,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82255 conditions, 19996 events. 14802/19996 cut-off events. For 124320/124329 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 102518 event pairs, 6364 based on Foata normal form. 23/20010 useless extension candidates. Maximal degree in co-relation 82219. Up to 18956 conditions per place. [2024-06-28 03:38:36,438 INFO L140 encePairwiseOnDemand]: 36/51 looper letters, 129 selfloop transitions, 67 changer transitions 0/200 dead transitions. [2024-06-28 03:38:36,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 200 transitions, 2010 flow [2024-06-28 03:38:36,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:38:36,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:38:36,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-28 03:38:36,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5070028011204482 [2024-06-28 03:38:36,440 INFO L175 Difference]: Start difference. First operand has 91 places, 128 transitions, 1136 flow. Second operand 7 states and 181 transitions. [2024-06-28 03:38:36,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 200 transitions, 2010 flow [2024-06-28 03:38:36,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 200 transitions, 1903 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 03:38:36,557 INFO L231 Difference]: Finished difference. Result has 97 places, 152 transitions, 1465 flow [2024-06-28 03:38:36,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1029, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1465, PETRI_PLACES=97, PETRI_TRANSITIONS=152} [2024-06-28 03:38:36,559 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 43 predicate places. [2024-06-28 03:38:36,559 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 152 transitions, 1465 flow [2024-06-28 03:38:36,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:36,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:36,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:36,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:38:36,560 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:38:36,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:36,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1631948438, now seen corresponding path program 2 times [2024-06-28 03:38:36,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:36,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711371655] [2024-06-28 03:38:36,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:36,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:36,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:37,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:37,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:37,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711371655] [2024-06-28 03:38:37,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711371655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:37,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:37,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:38:37,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486892611] [2024-06-28 03:38:37,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:37,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:38:37,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:37,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:38:37,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:38:37,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-28 03:38:37,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 152 transitions, 1465 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:37,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:37,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-28 03:38:37,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:39,447 INFO L124 PetriNetUnfolderBase]: 14888/20112 cut-off events. [2024-06-28 03:38:39,447 INFO L125 PetriNetUnfolderBase]: For 165283/165286 co-relation queries the response was YES. [2024-06-28 03:38:39,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93317 conditions, 20112 events. 14888/20112 cut-off events. For 165283/165286 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 103226 event pairs, 6732 based on Foata normal form. 12/20119 useless extension candidates. Maximal degree in co-relation 93277. Up to 19793 conditions per place. [2024-06-28 03:38:39,631 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 167 selfloop transitions, 34 changer transitions 0/205 dead transitions. [2024-06-28 03:38:39,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 205 transitions, 2281 flow [2024-06-28 03:38:39,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:38:39,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:38:39,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-28 03:38:39,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4789915966386555 [2024-06-28 03:38:39,634 INFO L175 Difference]: Start difference. First operand has 97 places, 152 transitions, 1465 flow. Second operand 7 states and 171 transitions. [2024-06-28 03:38:39,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 205 transitions, 2281 flow [2024-06-28 03:38:39,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 205 transitions, 2217 flow, removed 31 selfloop flow, removed 1 redundant places. [2024-06-28 03:38:39,799 INFO L231 Difference]: Finished difference. Result has 104 places, 162 transitions, 1619 flow [2024-06-28 03:38:39,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1413, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1619, PETRI_PLACES=104, PETRI_TRANSITIONS=162} [2024-06-28 03:38:39,800 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 50 predicate places. [2024-06-28 03:38:39,800 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 162 transitions, 1619 flow [2024-06-28 03:38:39,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:39,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:39,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:39,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:38:39,801 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:38:39,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:39,801 INFO L85 PathProgramCache]: Analyzing trace with hash 153954208, now seen corresponding path program 3 times [2024-06-28 03:38:39,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:39,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137911435] [2024-06-28 03:38:39,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:39,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:39,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:40,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:40,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:40,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137911435] [2024-06-28 03:38:40,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137911435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:40,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:40,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:38:40,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413466400] [2024-06-28 03:38:40,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:40,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:38:40,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:40,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:38:40,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:38:40,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-28 03:38:40,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 162 transitions, 1619 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:40,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:40,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-28 03:38:40,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:42,719 INFO L124 PetriNetUnfolderBase]: 14912/20144 cut-off events. [2024-06-28 03:38:42,719 INFO L125 PetriNetUnfolderBase]: For 194979/194982 co-relation queries the response was YES. [2024-06-28 03:38:42,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97236 conditions, 20144 events. 14912/20144 cut-off events. For 194979/194982 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 103521 event pairs, 6736 based on Foata normal form. 12/20151 useless extension candidates. Maximal degree in co-relation 97192. Up to 19970 conditions per place. [2024-06-28 03:38:42,900 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 172 selfloop transitions, 28 changer transitions 0/204 dead transitions. [2024-06-28 03:38:42,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 204 transitions, 2299 flow [2024-06-28 03:38:42,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:38:42,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:38:42,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-28 03:38:42,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4649859943977591 [2024-06-28 03:38:42,902 INFO L175 Difference]: Start difference. First operand has 104 places, 162 transitions, 1619 flow. Second operand 7 states and 166 transitions. [2024-06-28 03:38:42,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 204 transitions, 2299 flow [2024-06-28 03:38:43,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 204 transitions, 2231 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-28 03:38:43,077 INFO L231 Difference]: Finished difference. Result has 109 places, 169 transitions, 1716 flow [2024-06-28 03:38:43,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1554, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1716, PETRI_PLACES=109, PETRI_TRANSITIONS=169} [2024-06-28 03:38:43,077 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 55 predicate places. [2024-06-28 03:38:43,078 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 169 transitions, 1716 flow [2024-06-28 03:38:43,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:43,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:43,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:43,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:38:43,078 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:38:43,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:43,079 INFO L85 PathProgramCache]: Analyzing trace with hash 153963136, now seen corresponding path program 1 times [2024-06-28 03:38:43,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:43,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479541925] [2024-06-28 03:38:43,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:43,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:43,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:44,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:44,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:44,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479541925] [2024-06-28 03:38:44,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479541925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:44,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:44,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:38:44,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98479769] [2024-06-28 03:38:44,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:44,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:38:44,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:44,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:38:44,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:38:44,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-28 03:38:44,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 169 transitions, 1716 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:44,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:44,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-28 03:38:44,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:46,932 INFO L124 PetriNetUnfolderBase]: 14932/20172 cut-off events. [2024-06-28 03:38:46,932 INFO L125 PetriNetUnfolderBase]: For 217203/217206 co-relation queries the response was YES. [2024-06-28 03:38:47,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99625 conditions, 20172 events. 14932/20172 cut-off events. For 217203/217206 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 103602 event pairs, 6569 based on Foata normal form. 12/20179 useless extension candidates. Maximal degree in co-relation 99579. Up to 19954 conditions per place. [2024-06-28 03:38:47,092 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 170 selfloop transitions, 34 changer transitions 0/208 dead transitions. [2024-06-28 03:38:47,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 208 transitions, 2380 flow [2024-06-28 03:38:47,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:38:47,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:38:47,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-28 03:38:47,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4677871148459384 [2024-06-28 03:38:47,094 INFO L175 Difference]: Start difference. First operand has 109 places, 169 transitions, 1716 flow. Second operand 7 states and 167 transitions. [2024-06-28 03:38:47,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 208 transitions, 2380 flow [2024-06-28 03:38:47,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 208 transitions, 2304 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 03:38:47,292 INFO L231 Difference]: Finished difference. Result has 112 places, 173 transitions, 1775 flow [2024-06-28 03:38:47,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1640, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1775, PETRI_PLACES=112, PETRI_TRANSITIONS=173} [2024-06-28 03:38:47,293 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 58 predicate places. [2024-06-28 03:38:47,293 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 173 transitions, 1775 flow [2024-06-28 03:38:47,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:47,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:47,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:47,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:38:47,294 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:38:47,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:47,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1169320473, now seen corresponding path program 1 times [2024-06-28 03:38:47,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:47,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132244635] [2024-06-28 03:38:47,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:47,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:47,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:47,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:47,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:47,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132244635] [2024-06-28 03:38:47,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132244635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:47,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:47,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:38:47,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066447547] [2024-06-28 03:38:47,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:47,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:38:47,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:47,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:38:47,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:38:47,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-28 03:38:47,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 173 transitions, 1775 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:47,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:47,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-28 03:38:47,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:50,388 INFO L124 PetriNetUnfolderBase]: 14925/20162 cut-off events. [2024-06-28 03:38:50,388 INFO L125 PetriNetUnfolderBase]: For 243467/243467 co-relation queries the response was YES. [2024-06-28 03:38:50,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103678 conditions, 20162 events. 14925/20162 cut-off events. For 243467/243467 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 103481 event pairs, 6729 based on Foata normal form. 2/20160 useless extension candidates. Maximal degree in co-relation 103631. Up to 20113 conditions per place. [2024-06-28 03:38:50,526 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 171 selfloop transitions, 11 changer transitions 0/186 dead transitions. [2024-06-28 03:38:50,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 186 transitions, 2179 flow [2024-06-28 03:38:50,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:38:50,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:38:50,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 110 transitions. [2024-06-28 03:38:50,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43137254901960786 [2024-06-28 03:38:50,528 INFO L175 Difference]: Start difference. First operand has 112 places, 173 transitions, 1775 flow. Second operand 5 states and 110 transitions. [2024-06-28 03:38:50,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 186 transitions, 2179 flow [2024-06-28 03:38:50,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 186 transitions, 2062 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-28 03:38:50,715 INFO L231 Difference]: Finished difference. Result has 112 places, 173 transitions, 1689 flow [2024-06-28 03:38:50,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1658, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1689, PETRI_PLACES=112, PETRI_TRANSITIONS=173} [2024-06-28 03:38:50,715 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 58 predicate places. [2024-06-28 03:38:50,715 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 173 transitions, 1689 flow [2024-06-28 03:38:50,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:50,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:50,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:50,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:38:50,716 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:38:50,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:50,716 INFO L85 PathProgramCache]: Analyzing trace with hash 970448517, now seen corresponding path program 1 times [2024-06-28 03:38:50,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:50,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624361209] [2024-06-28 03:38:50,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:50,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:50,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:51,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:51,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:51,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624361209] [2024-06-28 03:38:51,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624361209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:51,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:51,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:38:51,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776760608] [2024-06-28 03:38:51,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:51,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:38:51,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:51,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:38:51,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:38:51,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-28 03:38:51,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 173 transitions, 1689 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:51,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:51,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-28 03:38:51,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:54,796 INFO L124 PetriNetUnfolderBase]: 14947/20194 cut-off events. [2024-06-28 03:38:54,796 INFO L125 PetriNetUnfolderBase]: For 265192/265207 co-relation queries the response was YES. [2024-06-28 03:38:54,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104906 conditions, 20194 events. 14947/20194 cut-off events. For 265192/265207 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 103729 event pairs, 6590 based on Foata normal form. 13/20201 useless extension candidates. Maximal degree in co-relation 104858. Up to 19763 conditions per place. [2024-06-28 03:38:54,993 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 151 selfloop transitions, 64 changer transitions 0/219 dead transitions. [2024-06-28 03:38:54,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 219 transitions, 2441 flow [2024-06-28 03:38:54,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:38:54,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:38:54,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 03:38:54,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4733893557422969 [2024-06-28 03:38:54,998 INFO L175 Difference]: Start difference. First operand has 112 places, 173 transitions, 1689 flow. Second operand 7 states and 169 transitions. [2024-06-28 03:38:54,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 219 transitions, 2441 flow [2024-06-28 03:38:55,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 219 transitions, 2414 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 03:38:55,236 INFO L231 Difference]: Finished difference. Result has 116 places, 181 transitions, 1925 flow [2024-06-28 03:38:55,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1662, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1925, PETRI_PLACES=116, PETRI_TRANSITIONS=181} [2024-06-28 03:38:55,236 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 62 predicate places. [2024-06-28 03:38:55,237 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 181 transitions, 1925 flow [2024-06-28 03:38:55,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:55,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:55,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:55,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:38:55,237 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:38:55,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:55,238 INFO L85 PathProgramCache]: Analyzing trace with hash 970538727, now seen corresponding path program 2 times [2024-06-28 03:38:55,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:55,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295899901] [2024-06-28 03:38:55,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:55,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:55,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:56,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:56,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:56,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295899901] [2024-06-28 03:38:56,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295899901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:56,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:56,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:38:56,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867082341] [2024-06-28 03:38:56,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:56,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:38:56,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:56,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:38:56,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:38:56,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-28 03:38:56,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 181 transitions, 1925 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:56,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:56,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-28 03:38:56,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:59,259 INFO L124 PetriNetUnfolderBase]: 14938/20178 cut-off events. [2024-06-28 03:38:59,259 INFO L125 PetriNetUnfolderBase]: For 303372/303387 co-relation queries the response was YES. [2024-06-28 03:38:59,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109525 conditions, 20178 events. 14938/20178 cut-off events. For 303372/303387 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 103540 event pairs, 6570 based on Foata normal form. 13/20185 useless extension candidates. Maximal degree in co-relation 109476. Up to 19834 conditions per place. [2024-06-28 03:38:59,402 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 147 selfloop transitions, 64 changer transitions 0/215 dead transitions. [2024-06-28 03:38:59,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 215 transitions, 2459 flow [2024-06-28 03:38:59,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:38:59,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:38:59,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-28 03:38:59,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4565826330532213 [2024-06-28 03:38:59,404 INFO L175 Difference]: Start difference. First operand has 116 places, 181 transitions, 1925 flow. Second operand 7 states and 163 transitions. [2024-06-28 03:38:59,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 215 transitions, 2459 flow [2024-06-28 03:38:59,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 215 transitions, 2312 flow, removed 46 selfloop flow, removed 3 redundant places. [2024-06-28 03:38:59,719 INFO L231 Difference]: Finished difference. Result has 120 places, 181 transitions, 1920 flow [2024-06-28 03:38:59,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1778, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1920, PETRI_PLACES=120, PETRI_TRANSITIONS=181} [2024-06-28 03:38:59,719 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 66 predicate places. [2024-06-28 03:38:59,719 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 181 transitions, 1920 flow [2024-06-28 03:38:59,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:59,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:59,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:59,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:38:59,720 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:38:59,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:59,721 INFO L85 PathProgramCache]: Analyzing trace with hash 974263532, now seen corresponding path program 1 times [2024-06-28 03:38:59,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:59,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128157105] [2024-06-28 03:38:59,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:59,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:59,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:00,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:00,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:00,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128157105] [2024-06-28 03:39:00,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128157105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:00,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:00,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:39:00,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976237245] [2024-06-28 03:39:00,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:00,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:39:00,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:00,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:39:00,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:39:00,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-28 03:39:00,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 181 transitions, 1920 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:00,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:00,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-28 03:39:00,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:03,207 INFO L124 PetriNetUnfolderBase]: 15132/20445 cut-off events. [2024-06-28 03:39:03,207 INFO L125 PetriNetUnfolderBase]: For 332509/332524 co-relation queries the response was YES. [2024-06-28 03:39:03,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112852 conditions, 20445 events. 15132/20445 cut-off events. For 332509/332524 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 104905 event pairs, 6326 based on Foata normal form. 16/20452 useless extension candidates. Maximal degree in co-relation 112801. Up to 19209 conditions per place. [2024-06-28 03:39:03,350 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 148 selfloop transitions, 85 changer transitions 0/237 dead transitions. [2024-06-28 03:39:03,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 237 transitions, 2958 flow [2024-06-28 03:39:03,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:39:03,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:39:03,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-28 03:39:03,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5042016806722689 [2024-06-28 03:39:03,352 INFO L175 Difference]: Start difference. First operand has 120 places, 181 transitions, 1920 flow. Second operand 7 states and 180 transitions. [2024-06-28 03:39:03,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 237 transitions, 2958 flow [2024-06-28 03:39:03,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 237 transitions, 2813 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 03:39:03,574 INFO L231 Difference]: Finished difference. Result has 123 places, 192 transitions, 2188 flow [2024-06-28 03:39:03,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1775, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2188, PETRI_PLACES=123, PETRI_TRANSITIONS=192} [2024-06-28 03:39:03,574 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 69 predicate places. [2024-06-28 03:39:03,574 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 192 transitions, 2188 flow [2024-06-28 03:39:03,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:03,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:03,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:03,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:39:03,575 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:39:03,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:03,576 INFO L85 PathProgramCache]: Analyzing trace with hash 974257952, now seen corresponding path program 2 times [2024-06-28 03:39:03,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:03,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681413508] [2024-06-28 03:39:03,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:03,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:03,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:04,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:04,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:04,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681413508] [2024-06-28 03:39:04,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681413508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:04,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:04,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:39:04,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597573349] [2024-06-28 03:39:04,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:04,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:39:04,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:04,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:39:04,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:39:04,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-28 03:39:04,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 192 transitions, 2188 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:04,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:04,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-28 03:39:04,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:07,461 INFO L124 PetriNetUnfolderBase]: 15110/20411 cut-off events. [2024-06-28 03:39:07,461 INFO L125 PetriNetUnfolderBase]: For 377647/377680 co-relation queries the response was YES. [2024-06-28 03:39:07,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117652 conditions, 20411 events. 15110/20411 cut-off events. For 377647/377680 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 104792 event pairs, 6305 based on Foata normal form. 34/20436 useless extension candidates. Maximal degree in co-relation 117598. Up to 19198 conditions per place. [2024-06-28 03:39:07,624 INFO L140 encePairwiseOnDemand]: 36/51 looper letters, 151 selfloop transitions, 89 changer transitions 0/244 dead transitions. [2024-06-28 03:39:07,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 244 transitions, 3154 flow [2024-06-28 03:39:07,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:39:07,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:39:07,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-28 03:39:07,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5126050420168067 [2024-06-28 03:39:07,625 INFO L175 Difference]: Start difference. First operand has 123 places, 192 transitions, 2188 flow. Second operand 7 states and 183 transitions. [2024-06-28 03:39:07,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 244 transitions, 3154 flow [2024-06-28 03:39:08,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 244 transitions, 2999 flow, removed 37 selfloop flow, removed 3 redundant places. [2024-06-28 03:39:08,137 INFO L231 Difference]: Finished difference. Result has 129 places, 196 transitions, 2376 flow [2024-06-28 03:39:08,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2035, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2376, PETRI_PLACES=129, PETRI_TRANSITIONS=196} [2024-06-28 03:39:08,137 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 75 predicate places. [2024-06-28 03:39:08,137 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 196 transitions, 2376 flow [2024-06-28 03:39:08,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:08,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:08,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:08,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:39:08,138 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:39:08,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:08,139 INFO L85 PathProgramCache]: Analyzing trace with hash 375008251, now seen corresponding path program 1 times [2024-06-28 03:39:08,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:08,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712814637] [2024-06-28 03:39:08,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:08,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:08,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:09,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:09,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:09,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712814637] [2024-06-28 03:39:09,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712814637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:09,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:09,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:09,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736309550] [2024-06-28 03:39:09,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:09,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:09,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:09,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:09,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:09,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-28 03:39:09,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 196 transitions, 2376 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:09,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:09,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-28 03:39:09,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:12,308 INFO L124 PetriNetUnfolderBase]: 15122/20429 cut-off events. [2024-06-28 03:39:12,309 INFO L125 PetriNetUnfolderBase]: For 406419/406422 co-relation queries the response was YES. [2024-06-28 03:39:12,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120110 conditions, 20429 events. 15122/20429 cut-off events. For 406419/406422 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 104987 event pairs, 6577 based on Foata normal form. 7/20431 useless extension candidates. Maximal degree in co-relation 120053. Up to 20189 conditions per place. [2024-06-28 03:39:12,518 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 189 selfloop transitions, 41 changer transitions 0/234 dead transitions. [2024-06-28 03:39:12,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 234 transitions, 3090 flow [2024-06-28 03:39:12,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:12,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:12,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 177 transitions. [2024-06-28 03:39:12,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4338235294117647 [2024-06-28 03:39:12,520 INFO L175 Difference]: Start difference. First operand has 129 places, 196 transitions, 2376 flow. Second operand 8 states and 177 transitions. [2024-06-28 03:39:12,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 234 transitions, 3090 flow [2024-06-28 03:39:13,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 234 transitions, 2939 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 03:39:13,003 INFO L231 Difference]: Finished difference. Result has 132 places, 201 transitions, 2411 flow [2024-06-28 03:39:13,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2227, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2411, PETRI_PLACES=132, PETRI_TRANSITIONS=201} [2024-06-28 03:39:13,004 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 78 predicate places. [2024-06-28 03:39:13,004 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 201 transitions, 2411 flow [2024-06-28 03:39:13,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:13,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:13,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:13,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:39:13,004 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:39:13,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:13,005 INFO L85 PathProgramCache]: Analyzing trace with hash 477614882, now seen corresponding path program 3 times [2024-06-28 03:39:13,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:13,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952435614] [2024-06-28 03:39:13,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:13,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:13,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:13,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:13,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:13,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952435614] [2024-06-28 03:39:13,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952435614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:13,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:13,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:39:13,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25894356] [2024-06-28 03:39:13,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:13,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:39:13,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:13,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:39:13,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:39:13,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-28 03:39:13,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 201 transitions, 2411 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:13,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:13,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-28 03:39:13,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand