./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix027_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.2024-05-21_14-57-05.files/protection/mix027_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix027_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-05-21_14-57-05.files/protection/mix027_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-bcb38a6-m [2024-06-03 19:30:06,615 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-03 19:30:06,655 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-03 19:30:06,658 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-03 19:30:06,659 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-03 19:30:06,673 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-03 19:30:06,673 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-03 19:30:06,673 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-03 19:30:06,674 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-03 19:30:06,674 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-03 19:30:06,674 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-03 19:30:06,674 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-03 19:30:06,675 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-03 19:30:06,675 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-03 19:30:06,675 INFO L153 SettingsManager]: * Use SBE=true [2024-06-03 19:30:06,676 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-03 19:30:06,676 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-03 19:30:06,676 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-03 19:30:06,676 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-03 19:30:06,677 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-03 19:30:06,677 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-03 19:30:06,677 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-03 19:30:06,677 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-03 19:30:06,678 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-03 19:30:06,678 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-03 19:30:06,678 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-03 19:30:06,678 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-03 19:30:06,679 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-03 19:30:06,679 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-03 19:30:06,679 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-03 19:30:06,679 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-03 19:30:06,680 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-03 19:30:06,680 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 19:30:06,680 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-03 19:30:06,680 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-03 19:30:06,680 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-03 19:30:06,681 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-03 19:30:06,681 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-03 19:30:06,681 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-03 19:30:06,681 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-03 19:30:06,682 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-03 19:30:06,688 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-03 19:30:06,688 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-03 19:30:06,688 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-03 19:30:06,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-03 19:30:06,904 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-03 19:30:06,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-03 19:30:06,907 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-03 19:30:06,908 INFO L274 PluginConnector]: CDTParser initialized [2024-06-03 19:30:06,908 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix027_power.oepc_pso.oepc_rmo.oepc.i [2024-06-03 19:30:08,033 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-03 19:30:08,256 INFO L384 CDTParser]: Found 1 translation units. [2024-06-03 19:30:08,256 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix027_power.oepc_pso.oepc_rmo.oepc.i [2024-06-03 19:30:08,267 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa8b65be4/14d51a8531574498bbe3018a6c718ab6/FLAG9dd9df8a8 [2024-06-03 19:30:08,278 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa8b65be4/14d51a8531574498bbe3018a6c718ab6 [2024-06-03 19:30:08,280 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-03 19:30:08,280 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-03 19:30:08,281 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix027_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-03 19:30:08,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-03 19:30:08,484 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-03 19:30:08,486 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-03 19:30:08,486 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-03 19:30:08,490 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-03 19:30:08,490 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 07:30:08" (1/2) ... [2024-06-03 19:30:08,491 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6720bfa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:30:08, skipping insertion in model container [2024-06-03 19:30:08,491 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 07:30:08" (1/2) ... [2024-06-03 19:30:08,492 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@9b9b88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:30:08, skipping insertion in model container [2024-06-03 19:30:08,492 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:30:08" (2/2) ... [2024-06-03 19:30:08,493 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6720bfa9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:30:08, skipping insertion in model container [2024-06-03 19:30:08,493 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:30:08" (2/2) ... [2024-06-03 19:30:08,493 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-03 19:30:08,582 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-03 19:30:08,583 INFO L97 edCorrectnessWitness]: Location invariant before [L872-L872] (((((((((((((((((((((! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1))) && (! multithreaded || ((0 <= a$mem_tmp && a$mem_tmp <= 1) && (a$mem_tmp == 0 || a$mem_tmp == 1)))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= a$w_buff1 && a$w_buff1 <= 1) && (a$w_buff1 == 0 || a$w_buff1 == 1)))) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= a$w_buff0 && a$w_buff0 <= 1) && (a$w_buff0 == 0 || a$w_buff0 == 1)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 2) && __unbuffered_p3_EAX <= 127) && ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2)))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-06-03 19:30:08,583 INFO L97 edCorrectnessWitness]: Location invariant before [L867-L867] (((((((((((((((((((((! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1))) && (! multithreaded || ((0 <= a$mem_tmp && a$mem_tmp <= 1) && (a$mem_tmp == 0 || a$mem_tmp == 1)))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= a$w_buff1 && a$w_buff1 <= 1) && (a$w_buff1 == 0 || a$w_buff1 == 1)))) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= a$w_buff0 && a$w_buff0 <= 1) && (a$w_buff0 == 0 || a$w_buff0 == 1)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 2) && __unbuffered_p3_EAX <= 127) && ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2)))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-06-03 19:30:08,583 INFO L97 edCorrectnessWitness]: Location invariant before [L869-L869] (((((((((((((((((((((! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1))) && (! multithreaded || ((0 <= a$mem_tmp && a$mem_tmp <= 1) && (a$mem_tmp == 0 || a$mem_tmp == 1)))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= a$w_buff1 && a$w_buff1 <= 1) && (a$w_buff1 == 0 || a$w_buff1 == 1)))) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= a$w_buff0 && a$w_buff0 <= 1) && (a$w_buff0 == 0 || a$w_buff0 == 1)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 2) && __unbuffered_p3_EAX <= 127) && ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2)))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-06-03 19:30:08,583 INFO L97 edCorrectnessWitness]: Location invariant before [L871-L871] (((((((((((((((((((((! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1))) && (! multithreaded || ((0 <= a$mem_tmp && a$mem_tmp <= 1) && (a$mem_tmp == 0 || a$mem_tmp == 1)))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= a$w_buff1 && a$w_buff1 <= 1) && (a$w_buff1 == 0 || a$w_buff1 == 1)))) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= a$w_buff0 && a$w_buff0 <= 1) && (a$w_buff0 == 0 || a$w_buff0 == 1)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 2) && __unbuffered_p3_EAX <= 127) && ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2)))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-06-03 19:30:08,583 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-03 19:30:08,584 INFO L106 edCorrectnessWitness]: ghost_update [L865-L865] multithreaded = 1; [2024-06-03 19:30:08,618 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-03 19:30:08,874 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 19:30:08,889 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-03 19:30:09,027 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 19:30:09,064 INFO L206 MainTranslator]: Completed translation [2024-06-03 19:30:09,065 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:30:09 WrapperNode [2024-06-03 19:30:09,065 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-03 19:30:09,066 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-03 19:30:09,067 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-03 19:30:09,067 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-03 19:30:09,072 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:30:09" (1/1) ... [2024-06-03 19:30:09,102 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:30:09" (1/1) ... [2024-06-03 19:30:09,136 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 138 [2024-06-03 19:30:09,136 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-03 19:30:09,137 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-03 19:30:09,137 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-03 19:30:09,137 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-03 19:30:09,145 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:30:09" (1/1) ... [2024-06-03 19:30:09,145 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:30:09" (1/1) ... [2024-06-03 19:30:09,148 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:30:09" (1/1) ... [2024-06-03 19:30:09,160 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]. [2024-06-03 19:30:09,160 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:30:09" (1/1) ... [2024-06-03 19:30:09,161 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:30:09" (1/1) ... [2024-06-03 19:30:09,174 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:30:09" (1/1) ... [2024-06-03 19:30:09,176 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:30:09" (1/1) ... [2024-06-03 19:30:09,177 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:30:09" (1/1) ... [2024-06-03 19:30:09,179 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:30:09" (1/1) ... [2024-06-03 19:30:09,181 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-03 19:30:09,182 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-03 19:30:09,182 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-03 19:30:09,182 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-03 19:30:09,183 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:30:09" (1/1) ... [2024-06-03 19:30:09,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 19:30:09,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 19:30:09,218 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) [2024-06-03 19:30:09,220 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 [2024-06-03 19:30:09,244 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-03 19:30:09,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-03 19:30:09,245 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-03 19:30:09,245 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-03 19:30:09,246 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-03 19:30:09,246 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-03 19:30:09,246 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-03 19:30:09,246 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-03 19:30:09,247 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-03 19:30:09,247 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-03 19:30:09,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-03 19:30:09,247 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-03 19:30:09,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-03 19:30:09,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-03 19:30:09,248 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-03 19:30:09,381 INFO L244 CfgBuilder]: Building ICFG [2024-06-03 19:30:09,383 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-03 19:30:09,701 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-03 19:30:09,701 INFO L293 CfgBuilder]: Performing block encoding [2024-06-03 19:30:09,843 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-03 19:30:09,843 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-03 19:30:09,844 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 07:30:09 BoogieIcfgContainer [2024-06-03 19:30:09,844 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-03 19:30:09,847 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-03 19:30:09,847 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-03 19:30:09,849 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-03 19:30:09,849 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.06 07:30:08" (1/4) ... [2024-06-03 19:30:09,850 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@275260b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 07:30:09, skipping insertion in model container [2024-06-03 19:30:09,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:30:08" (2/4) ... [2024-06-03 19:30:09,850 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@275260b5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 07:30:09, skipping insertion in model container [2024-06-03 19:30:09,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:30:09" (3/4) ... [2024-06-03 19:30:09,851 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@275260b5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 07:30:09, skipping insertion in model container [2024-06-03 19:30:09,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 07:30:09" (4/4) ... [2024-06-03 19:30:09,852 INFO L112 eAbstractionObserver]: Analyzing ICFG mix027_power.oepc_pso.oepc_rmo.oepc.i [2024-06-03 19:30:09,864 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-03 19:30:09,864 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-03 19:30:09,865 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-03 19:30:09,938 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-03 19:30:09,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 53 transitions, 122 flow [2024-06-03 19:30:10,000 INFO L124 PetriNetUnfolderBase]: 0/49 cut-off events. [2024-06-03 19:30:10,000 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 19:30:10,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 49 events. 0/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 86 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-03 19:30:10,002 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 53 transitions, 122 flow [2024-06-03 19:30:10,005 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 43 transitions, 98 flow [2024-06-03 19:30:10,016 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-03 19:30:10,022 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;@534962a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-03 19:30:10,022 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-03 19:30:10,027 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-03 19:30:10,027 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-03 19:30:10,027 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 19:30:10,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:30:10,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-03 19:30:10,028 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)] === [2024-06-03 19:30:10,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:30:10,031 INFO L85 PathProgramCache]: Analyzing trace with hash -485745775, now seen corresponding path program 1 times [2024-06-03 19:30:10,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:30:10,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949728568] [2024-06-03 19:30:10,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:30:10,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:30:10,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:30:11,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:30:11,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:30:11,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949728568] [2024-06-03 19:30:11,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949728568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:30:11,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:30:11,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-03 19:30:11,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839504876] [2024-06-03 19:30:11,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:30:11,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 19:30:11,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:30:11,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 19:30:11,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-03 19:30:11,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-03 19:30:11,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:11,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:30:11,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-03 19:30:11,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:30:12,807 INFO L124 PetriNetUnfolderBase]: 11595/16042 cut-off events. [2024-06-03 19:30:12,808 INFO L125 PetriNetUnfolderBase]: For 213/213 co-relation queries the response was YES. [2024-06-03 19:30:12,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32180 conditions, 16042 events. 11595/16042 cut-off events. For 213/213 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 87061 event pairs, 9068 based on Foata normal form. 1/15819 useless extension candidates. Maximal degree in co-relation 32164. Up to 15685 conditions per place. [2024-06-03 19:30:12,898 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 46 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-06-03 19:30:12,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 237 flow [2024-06-03 19:30:12,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 19:30:12,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 19:30:12,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-06-03 19:30:12,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5911949685534591 [2024-06-03 19:30:12,910 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 98 flow. Second operand 3 states and 94 transitions. [2024-06-03 19:30:12,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 237 flow [2024-06-03 19:30:12,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 57 transitions, 230 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-03 19:30:12,917 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 133 flow [2024-06-03 19:30:12,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-06-03 19:30:12,922 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2024-06-03 19:30:12,922 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 133 flow [2024-06-03 19:30:12,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:12,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:30:12,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:30:12,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-03 19:30:12,924 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)] === [2024-06-03 19:30:12,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:30:12,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1349774128, now seen corresponding path program 1 times [2024-06-03 19:30:12,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:30:12,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526415255] [2024-06-03 19:30:12,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:30:12,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:30:12,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:30:13,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:30:13,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:30:13,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526415255] [2024-06-03 19:30:13,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526415255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:30:13,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:30:13,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-03 19:30:13,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501498001] [2024-06-03 19:30:13,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:30:13,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-03 19:30:13,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:30:13,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-03 19:30:13,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-03 19:30:13,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-03 19:30:13,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:13,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:30:13,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-03 19:30:13,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:30:15,202 INFO L124 PetriNetUnfolderBase]: 11585/16036 cut-off events. [2024-06-03 19:30:15,203 INFO L125 PetriNetUnfolderBase]: For 2898/2898 co-relation queries the response was YES. [2024-06-03 19:30:15,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36157 conditions, 16036 events. 11585/16036 cut-off events. For 2898/2898 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 87390 event pairs, 8249 based on Foata normal form. 4/16037 useless extension candidates. Maximal degree in co-relation 36142. Up to 15650 conditions per place. [2024-06-03 19:30:15,290 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 56 selfloop transitions, 9 changer transitions 0/71 dead transitions. [2024-06-03 19:30:15,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 71 transitions, 329 flow [2024-06-03 19:30:15,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 19:30:15,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 19:30:15,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 121 transitions. [2024-06-03 19:30:15,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5707547169811321 [2024-06-03 19:30:15,292 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 133 flow. Second operand 4 states and 121 transitions. [2024-06-03 19:30:15,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 71 transitions, 329 flow [2024-06-03 19:30:15,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 71 transitions, 324 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 19:30:15,294 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 181 flow [2024-06-03 19:30:15,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-06-03 19:30:15,295 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2024-06-03 19:30:15,295 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 181 flow [2024-06-03 19:30:15,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:15,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:30:15,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:30:15,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-03 19:30:15,296 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)] === [2024-06-03 19:30:15,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:30:15,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1106674036, now seen corresponding path program 1 times [2024-06-03 19:30:15,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:30:15,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163211112] [2024-06-03 19:30:15,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:30:15,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:30:15,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:30:16,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:30:16,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:30:16,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163211112] [2024-06-03 19:30:16,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163211112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:30:16,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:30:16,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 19:30:16,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612348339] [2024-06-03 19:30:16,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:30:16,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 19:30:16,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:30:16,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 19:30:16,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-03 19:30:16,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-03 19:30:16,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 181 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:16,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:30:16,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-03 19:30:16,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:30:17,862 INFO L124 PetriNetUnfolderBase]: 11693/16127 cut-off events. [2024-06-03 19:30:17,862 INFO L125 PetriNetUnfolderBase]: For 8530/8530 co-relation queries the response was YES. [2024-06-03 19:30:17,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40480 conditions, 16127 events. 11693/16127 cut-off events. For 8530/8530 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 87381 event pairs, 6700 based on Foata normal form. 10/16127 useless extension candidates. Maximal degree in co-relation 40463. Up to 15623 conditions per place. [2024-06-03 19:30:17,920 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 76 selfloop transitions, 21 changer transitions 0/103 dead transitions. [2024-06-03 19:30:17,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 103 transitions, 553 flow [2024-06-03 19:30:17,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 19:30:17,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 19:30:17,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 160 transitions. [2024-06-03 19:30:17,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6037735849056604 [2024-06-03 19:30:17,922 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 181 flow. Second operand 5 states and 160 transitions. [2024-06-03 19:30:17,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 103 transitions, 553 flow [2024-06-03 19:30:17,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 103 transitions, 534 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-03 19:30:17,927 INFO L231 Difference]: Finished difference. Result has 63 places, 65 transitions, 314 flow [2024-06-03 19:30:17,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=314, PETRI_PLACES=63, PETRI_TRANSITIONS=65} [2024-06-03 19:30:17,927 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 7 predicate places. [2024-06-03 19:30:17,927 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 65 transitions, 314 flow [2024-06-03 19:30:17,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:17,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:30:17,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:30:17,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-03 19:30:17,928 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)] === [2024-06-03 19:30:17,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:30:17,929 INFO L85 PathProgramCache]: Analyzing trace with hash 52844239, now seen corresponding path program 1 times [2024-06-03 19:30:17,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:30:17,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219170537] [2024-06-03 19:30:17,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:30:17,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:30:17,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:30:19,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:30:19,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:30:19,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219170537] [2024-06-03 19:30:19,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219170537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:30:19,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:30:19,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 19:30:19,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264443631] [2024-06-03 19:30:19,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:30:19,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 19:30:19,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:30:19,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 19:30:19,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-03 19:30:19,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-03 19:30:19,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 65 transitions, 314 flow. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:19,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:30:19,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-03 19:30:19,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:30:20,924 INFO L124 PetriNetUnfolderBase]: 11739/16255 cut-off events. [2024-06-03 19:30:20,925 INFO L125 PetriNetUnfolderBase]: For 20678/20678 co-relation queries the response was YES. [2024-06-03 19:30:20,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48004 conditions, 16255 events. 11739/16255 cut-off events. For 20678/20678 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 88514 event pairs, 5879 based on Foata normal form. 10/16255 useless extension candidates. Maximal degree in co-relation 47984. Up to 15619 conditions per place. [2024-06-03 19:30:20,998 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 87 selfloop transitions, 26 changer transitions 0/119 dead transitions. [2024-06-03 19:30:20,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 119 transitions, 734 flow [2024-06-03 19:30:20,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:30:20,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:30:21,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 189 transitions. [2024-06-03 19:30:21,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5943396226415094 [2024-06-03 19:30:21,000 INFO L175 Difference]: Start difference. First operand has 63 places, 65 transitions, 314 flow. Second operand 6 states and 189 transitions. [2024-06-03 19:30:21,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 119 transitions, 734 flow [2024-06-03 19:30:21,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 119 transitions, 722 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-03 19:30:21,009 INFO L231 Difference]: Finished difference. Result has 69 places, 70 transitions, 408 flow [2024-06-03 19:30:21,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=408, PETRI_PLACES=69, PETRI_TRANSITIONS=70} [2024-06-03 19:30:21,010 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 13 predicate places. [2024-06-03 19:30:21,010 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 70 transitions, 408 flow [2024-06-03 19:30:21,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:21,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:30:21,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:30:21,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-03 19:30:21,011 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)] === [2024-06-03 19:30:21,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:30:21,011 INFO L85 PathProgramCache]: Analyzing trace with hash -80171279, now seen corresponding path program 1 times [2024-06-03 19:30:21,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:30:21,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813091446] [2024-06-03 19:30:21,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:30:21,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:30:21,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:30:22,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:30:22,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:30:22,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813091446] [2024-06-03 19:30:22,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813091446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:30:22,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:30:22,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:30:22,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227607594] [2024-06-03 19:30:22,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:30:22,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:30:22,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:30:22,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:30:22,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:30:22,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-03 19:30:22,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 70 transitions, 408 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 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) [2024-06-03 19:30:22,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:30:22,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-03 19:30:22,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:30:24,022 INFO L124 PetriNetUnfolderBase]: 11954/16593 cut-off events. [2024-06-03 19:30:24,022 INFO L125 PetriNetUnfolderBase]: For 33158/33164 co-relation queries the response was YES. [2024-06-03 19:30:24,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54212 conditions, 16593 events. 11954/16593 cut-off events. For 33158/33164 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 91012 event pairs, 4656 based on Foata normal form. 41/16626 useless extension candidates. Maximal degree in co-relation 54189. Up to 15556 conditions per place. [2024-06-03 19:30:24,111 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 102 selfloop transitions, 44 changer transitions 0/152 dead transitions. [2024-06-03 19:30:24,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 152 transitions, 1086 flow [2024-06-03 19:30:24,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:30:24,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:30:24,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 223 transitions. [2024-06-03 19:30:24,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.601078167115903 [2024-06-03 19:30:24,113 INFO L175 Difference]: Start difference. First operand has 69 places, 70 transitions, 408 flow. Second operand 7 states and 223 transitions. [2024-06-03 19:30:24,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 152 transitions, 1086 flow [2024-06-03 19:30:24,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 152 transitions, 1020 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-03 19:30:24,124 INFO L231 Difference]: Finished difference. Result has 75 places, 89 transitions, 667 flow [2024-06-03 19:30:24,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=667, PETRI_PLACES=75, PETRI_TRANSITIONS=89} [2024-06-03 19:30:24,125 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 19 predicate places. [2024-06-03 19:30:24,125 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 89 transitions, 667 flow [2024-06-03 19:30:24,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 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) [2024-06-03 19:30:24,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:30:24,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:30:24,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-03 19:30:24,126 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)] === [2024-06-03 19:30:24,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:30:24,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1231945210, now seen corresponding path program 1 times [2024-06-03 19:30:24,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:30:24,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238070979] [2024-06-03 19:30:24,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:30:24,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:30:24,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:30:24,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:30:24,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:30:24,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238070979] [2024-06-03 19:30:24,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238070979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:30:24,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:30:24,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 19:30:24,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347888224] [2024-06-03 19:30:24,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:30:24,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 19:30:24,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:30:24,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 19:30:24,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-03 19:30:24,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-03 19:30:24,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 89 transitions, 667 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:24,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:30:24,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-03 19:30:24,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:30:26,669 INFO L124 PetriNetUnfolderBase]: 11936/16556 cut-off events. [2024-06-03 19:30:26,669 INFO L125 PetriNetUnfolderBase]: For 60087/60087 co-relation queries the response was YES. [2024-06-03 19:30:26,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62605 conditions, 16556 events. 11936/16556 cut-off events. For 60087/60087 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 90681 event pairs, 5782 based on Foata normal form. 6/16559 useless extension candidates. Maximal degree in co-relation 62577. Up to 16157 conditions per place. [2024-06-03 19:30:26,770 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 87 selfloop transitions, 13 changer transitions 0/106 dead transitions. [2024-06-03 19:30:26,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 106 transitions, 911 flow [2024-06-03 19:30:26,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 19:30:26,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 19:30:26,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-06-03 19:30:26,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4716981132075472 [2024-06-03 19:30:26,773 INFO L175 Difference]: Start difference. First operand has 75 places, 89 transitions, 667 flow. Second operand 5 states and 125 transitions. [2024-06-03 19:30:26,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 106 transitions, 911 flow [2024-06-03 19:30:26,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 106 transitions, 861 flow, removed 25 selfloop flow, removed 0 redundant places. [2024-06-03 19:30:26,801 INFO L231 Difference]: Finished difference. Result has 80 places, 89 transitions, 657 flow [2024-06-03 19:30:26,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=617, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=657, PETRI_PLACES=80, PETRI_TRANSITIONS=89} [2024-06-03 19:30:26,801 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 24 predicate places. [2024-06-03 19:30:26,801 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 89 transitions, 657 flow [2024-06-03 19:30:26,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:26,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:30:26,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:30:26,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-03 19:30:26,802 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)] === [2024-06-03 19:30:26,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:30:26,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1809882969, now seen corresponding path program 1 times [2024-06-03 19:30:26,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:30:26,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134737856] [2024-06-03 19:30:26,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:30:26,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:30:26,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:30:27,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:30:27,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:30:27,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134737856] [2024-06-03 19:30:27,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134737856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:30:27,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:30:27,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:30:27,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865194400] [2024-06-03 19:30:27,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:30:27,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:30:27,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:30:27,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:30:27,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:30:27,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-03 19:30:27,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 89 transitions, 657 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:27,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:30:27,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-03 19:30:27,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:30:29,448 INFO L124 PetriNetUnfolderBase]: 11962/16583 cut-off events. [2024-06-03 19:30:29,448 INFO L125 PetriNetUnfolderBase]: For 66306/66306 co-relation queries the response was YES. [2024-06-03 19:30:29,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63012 conditions, 16583 events. 11962/16583 cut-off events. For 66306/66306 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 90798 event pairs, 5477 based on Foata normal form. 12/16589 useless extension candidates. Maximal degree in co-relation 62980. Up to 16004 conditions per place. [2024-06-03 19:30:29,532 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 94 selfloop transitions, 25 changer transitions 0/125 dead transitions. [2024-06-03 19:30:29,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 125 transitions, 1065 flow [2024-06-03 19:30:29,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:30:29,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:30:29,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-06-03 19:30:29,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-03 19:30:29,533 INFO L175 Difference]: Start difference. First operand has 80 places, 89 transitions, 657 flow. Second operand 6 states and 159 transitions. [2024-06-03 19:30:29,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 125 transitions, 1065 flow [2024-06-03 19:30:29,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 125 transitions, 1024 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-03 19:30:29,557 INFO L231 Difference]: Finished difference. Result has 82 places, 93 transitions, 725 flow [2024-06-03 19:30:29,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=725, PETRI_PLACES=82, PETRI_TRANSITIONS=93} [2024-06-03 19:30:29,558 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 26 predicate places. [2024-06-03 19:30:29,558 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 93 transitions, 725 flow [2024-06-03 19:30:29,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:29,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:30:29,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:30:29,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-03 19:30:29,558 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)] === [2024-06-03 19:30:29,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:30:29,559 INFO L85 PathProgramCache]: Analyzing trace with hash -360383501, now seen corresponding path program 2 times [2024-06-03 19:30:29,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:30:29,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774804796] [2024-06-03 19:30:29,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:30:29,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:30:29,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:30:30,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:30:30,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:30:30,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774804796] [2024-06-03 19:30:30,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774804796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:30:30,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:30:30,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:30:30,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631674049] [2024-06-03 19:30:30,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:30:30,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:30:30,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:30:30,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:30:30,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:30:30,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-03 19:30:30,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 93 transitions, 725 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:30,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:30:30,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-03 19:30:30,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:30:32,183 INFO L124 PetriNetUnfolderBase]: 11911/16513 cut-off events. [2024-06-03 19:30:32,183 INFO L125 PetriNetUnfolderBase]: For 75390/75390 co-relation queries the response was YES. [2024-06-03 19:30:32,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64087 conditions, 16513 events. 11911/16513 cut-off events. For 75390/75390 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 90203 event pairs, 5746 based on Foata normal form. 6/16516 useless extension candidates. Maximal degree in co-relation 64055. Up to 16103 conditions per place. [2024-06-03 19:30:32,271 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 98 selfloop transitions, 14 changer transitions 0/118 dead transitions. [2024-06-03 19:30:32,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 118 transitions, 1015 flow [2024-06-03 19:30:32,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:30:32,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:30:32,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-03 19:30:32,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46540880503144655 [2024-06-03 19:30:32,273 INFO L175 Difference]: Start difference. First operand has 82 places, 93 transitions, 725 flow. Second operand 6 states and 148 transitions. [2024-06-03 19:30:32,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 118 transitions, 1015 flow [2024-06-03 19:30:32,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 118 transitions, 972 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-03 19:30:32,312 INFO L231 Difference]: Finished difference. Result has 85 places, 93 transitions, 721 flow [2024-06-03 19:30:32,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=721, PETRI_PLACES=85, PETRI_TRANSITIONS=93} [2024-06-03 19:30:32,312 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 29 predicate places. [2024-06-03 19:30:32,313 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 93 transitions, 721 flow [2024-06-03 19:30:32,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:32,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:30:32,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:30:32,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-03 19:30:32,313 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)] === [2024-06-03 19:30:32,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:30:32,314 INFO L85 PathProgramCache]: Analyzing trace with hash 278473291, now seen corresponding path program 1 times [2024-06-03 19:30:32,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:30:32,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720903706] [2024-06-03 19:30:32,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:30:32,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:30:32,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:30:33,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:30:33,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:30:33,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720903706] [2024-06-03 19:30:33,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720903706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:30:33,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:30:33,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:30:33,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461753427] [2024-06-03 19:30:33,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:30:33,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:30:33,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:30:33,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:30:33,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:30:33,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-03 19:30:33,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 93 transitions, 721 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:33,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:30:33,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-03 19:30:33,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:30:36,126 INFO L124 PetriNetUnfolderBase]: 14451/19754 cut-off events. [2024-06-03 19:30:36,126 INFO L125 PetriNetUnfolderBase]: For 102037/102037 co-relation queries the response was YES. [2024-06-03 19:30:36,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76806 conditions, 19754 events. 14451/19754 cut-off events. For 102037/102037 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 105690 event pairs, 7020 based on Foata normal form. 6/19757 useless extension candidates. Maximal degree in co-relation 76773. Up to 19454 conditions per place. [2024-06-03 19:30:36,290 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 107 selfloop transitions, 20 changer transitions 0/132 dead transitions. [2024-06-03 19:30:36,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 132 transitions, 1128 flow [2024-06-03 19:30:36,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:30:36,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:30:36,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-03 19:30:36,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.444743935309973 [2024-06-03 19:30:36,292 INFO L175 Difference]: Start difference. First operand has 85 places, 93 transitions, 721 flow. Second operand 7 states and 165 transitions. [2024-06-03 19:30:36,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 132 transitions, 1128 flow [2024-06-03 19:30:36,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 132 transitions, 1058 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-03 19:30:36,356 INFO L231 Difference]: Finished difference. Result has 87 places, 100 transitions, 785 flow [2024-06-03 19:30:36,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=785, PETRI_PLACES=87, PETRI_TRANSITIONS=100} [2024-06-03 19:30:36,357 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 31 predicate places. [2024-06-03 19:30:36,357 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 100 transitions, 785 flow [2024-06-03 19:30:36,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:36,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:30:36,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:30:36,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-03 19:30:36,358 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:30:36,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:30:36,358 INFO L85 PathProgramCache]: Analyzing trace with hash -99988612, now seen corresponding path program 1 times [2024-06-03 19:30:36,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:30:36,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413878934] [2024-06-03 19:30:36,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:30:36,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:30:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:30:36,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:30:36,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:30:36,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413878934] [2024-06-03 19:30:36,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413878934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:30:36,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:30:36,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 19:30:36,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133397700] [2024-06-03 19:30:36,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:30:36,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 19:30:36,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:30:36,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 19:30:36,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-03 19:30:37,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-03 19:30:37,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 100 transitions, 785 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) [2024-06-03 19:30:37,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:30:37,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-03 19:30:37,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:30:39,018 INFO L124 PetriNetUnfolderBase]: 14444/19969 cut-off events. [2024-06-03 19:30:39,018 INFO L125 PetriNetUnfolderBase]: For 119057/119057 co-relation queries the response was YES. [2024-06-03 19:30:39,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81253 conditions, 19969 events. 14444/19969 cut-off events. For 119057/119057 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 108201 event pairs, 7127 based on Foata normal form. 2/19968 useless extension candidates. Maximal degree in co-relation 81219. Up to 19511 conditions per place. [2024-06-03 19:30:39,173 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 103 selfloop transitions, 10 changer transitions 0/118 dead transitions. [2024-06-03 19:30:39,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 118 transitions, 1085 flow [2024-06-03 19:30:39,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 19:30:39,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 19:30:39,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2024-06-03 19:30:39,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4377358490566038 [2024-06-03 19:30:39,175 INFO L175 Difference]: Start difference. First operand has 87 places, 100 transitions, 785 flow. Second operand 5 states and 116 transitions. [2024-06-03 19:30:39,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 118 transitions, 1085 flow [2024-06-03 19:30:39,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 118 transitions, 1025 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-03 19:30:39,257 INFO L231 Difference]: Finished difference. Result has 88 places, 104 transitions, 800 flow [2024-06-03 19:30:39,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=725, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=800, PETRI_PLACES=88, PETRI_TRANSITIONS=104} [2024-06-03 19:30:39,259 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 32 predicate places. [2024-06-03 19:30:39,260 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 104 transitions, 800 flow [2024-06-03 19:30:39,260 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) [2024-06-03 19:30:39,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:30:39,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:30:39,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-03 19:30:39,261 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)] === [2024-06-03 19:30:39,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:30:39,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1309470610, now seen corresponding path program 1 times [2024-06-03 19:30:39,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:30:39,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601739631] [2024-06-03 19:30:39,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:30:39,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:30:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:30:40,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:30:40,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:30:40,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601739631] [2024-06-03 19:30:40,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601739631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:30:40,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:30:40,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:30:40,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160072485] [2024-06-03 19:30:40,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:30:40,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:30:40,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:30:40,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:30:40,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:30:40,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-03 19:30:40,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 104 transitions, 800 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 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) [2024-06-03 19:30:40,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:30:40,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-03 19:30:40,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:30:42,831 INFO L124 PetriNetUnfolderBase]: 14175/19660 cut-off events. [2024-06-03 19:30:42,831 INFO L125 PetriNetUnfolderBase]: For 139338/139338 co-relation queries the response was YES. [2024-06-03 19:30:42,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84036 conditions, 19660 events. 14175/19660 cut-off events. For 139338/139338 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 109248 event pairs, 5829 based on Foata normal form. 6/19657 useless extension candidates. Maximal degree in co-relation 84001. Up to 18806 conditions per place. [2024-06-03 19:30:42,977 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 112 selfloop transitions, 37 changer transitions 0/156 dead transitions. [2024-06-03 19:30:42,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 156 transitions, 1272 flow [2024-06-03 19:30:42,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:30:42,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:30:42,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-03 19:30:42,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49056603773584906 [2024-06-03 19:30:42,980 INFO L175 Difference]: Start difference. First operand has 88 places, 104 transitions, 800 flow. Second operand 8 states and 208 transitions. [2024-06-03 19:30:42,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 156 transitions, 1272 flow [2024-06-03 19:30:43,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 156 transitions, 1227 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-03 19:30:43,045 INFO L231 Difference]: Finished difference. Result has 93 places, 108 transitions, 893 flow [2024-06-03 19:30:43,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=755, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=893, PETRI_PLACES=93, PETRI_TRANSITIONS=108} [2024-06-03 19:30:43,046 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 37 predicate places. [2024-06-03 19:30:43,046 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 108 transitions, 893 flow [2024-06-03 19:30:43,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 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) [2024-06-03 19:30:43,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:30:43,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:30:43,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-03 19:30:43,047 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)] === [2024-06-03 19:30:43,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:30:43,048 INFO L85 PathProgramCache]: Analyzing trace with hash 51623856, now seen corresponding path program 1 times [2024-06-03 19:30:43,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:30:43,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642999564] [2024-06-03 19:30:43,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:30:43,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:30:43,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:30:44,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:30:44,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:30:44,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642999564] [2024-06-03 19:30:44,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642999564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:30:44,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:30:44,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:30:44,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856251987] [2024-06-03 19:30:44,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:30:44,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:30:44,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:30:44,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:30:44,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:30:44,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-03 19:30:44,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 108 transitions, 893 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:44,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:30:44,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-03 19:30:44,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:30:46,467 INFO L124 PetriNetUnfolderBase]: 14452/19951 cut-off events. [2024-06-03 19:30:46,467 INFO L125 PetriNetUnfolderBase]: For 165973/165973 co-relation queries the response was YES. [2024-06-03 19:30:46,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90070 conditions, 19951 events. 14452/19951 cut-off events. For 165973/165973 co-relation queries the response was YES. Maximal size of possible extension queue 644. Compared 107904 event pairs, 6936 based on Foata normal form. 3/19951 useless extension candidates. Maximal degree in co-relation 90034. Up to 19442 conditions per place. [2024-06-03 19:30:46,630 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 114 selfloop transitions, 25 changer transitions 0/144 dead transitions. [2024-06-03 19:30:46,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 144 transitions, 1299 flow [2024-06-03 19:30:46,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:30:46,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:30:46,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-03 19:30:46,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4474393530997305 [2024-06-03 19:30:46,657 INFO L175 Difference]: Start difference. First operand has 93 places, 108 transitions, 893 flow. Second operand 7 states and 166 transitions. [2024-06-03 19:30:46,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 144 transitions, 1299 flow [2024-06-03 19:30:46,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 144 transitions, 1179 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-03 19:30:46,780 INFO L231 Difference]: Finished difference. Result has 94 places, 112 transitions, 891 flow [2024-06-03 19:30:46,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=779, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=891, PETRI_PLACES=94, PETRI_TRANSITIONS=112} [2024-06-03 19:30:46,780 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 38 predicate places. [2024-06-03 19:30:46,780 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 112 transitions, 891 flow [2024-06-03 19:30:46,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:46,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:30:46,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:30:46,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-03 19:30:46,781 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:30:46,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:30:46,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1221240062, now seen corresponding path program 1 times [2024-06-03 19:30:46,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:30:46,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38547464] [2024-06-03 19:30:46,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:30:46,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:30:46,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:30:47,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:30:47,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:30:47,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38547464] [2024-06-03 19:30:47,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38547464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:30:47,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:30:47,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:30:47,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626187568] [2024-06-03 19:30:47,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:30:47,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:30:47,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:30:47,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:30:47,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:30:47,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-03 19:30:47,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 112 transitions, 891 flow. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 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) [2024-06-03 19:30:47,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:30:47,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-03 19:30:47,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:30:49,930 INFO L124 PetriNetUnfolderBase]: 16510/22257 cut-off events. [2024-06-03 19:30:49,930 INFO L125 PetriNetUnfolderBase]: For 210043/210043 co-relation queries the response was YES. [2024-06-03 19:30:50,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102421 conditions, 22257 events. 16510/22257 cut-off events. For 210043/210043 co-relation queries the response was YES. Maximal size of possible extension queue 688. Compared 115043 event pairs, 8012 based on Foata normal form. 6/22260 useless extension candidates. Maximal degree in co-relation 102384. Up to 22183 conditions per place. [2024-06-03 19:30:50,121 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 122 selfloop transitions, 22 changer transitions 0/148 dead transitions. [2024-06-03 19:30:50,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 148 transitions, 1411 flow [2024-06-03 19:30:50,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:30:50,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:30:50,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-06-03 19:30:50,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4339622641509434 [2024-06-03 19:30:50,122 INFO L175 Difference]: Start difference. First operand has 94 places, 112 transitions, 891 flow. Second operand 6 states and 138 transitions. [2024-06-03 19:30:50,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 148 transitions, 1411 flow [2024-06-03 19:30:50,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 148 transitions, 1340 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-03 19:30:50,254 INFO L231 Difference]: Finished difference. Result has 96 places, 126 transitions, 1034 flow [2024-06-03 19:30:50,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=820, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1034, PETRI_PLACES=96, PETRI_TRANSITIONS=126} [2024-06-03 19:30:50,255 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 40 predicate places. [2024-06-03 19:30:50,255 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 126 transitions, 1034 flow [2024-06-03 19:30:50,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 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) [2024-06-03 19:30:50,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:30:50,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:30:50,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-03 19:30:50,256 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)] === [2024-06-03 19:30:50,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:30:50,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1749588816, now seen corresponding path program 1 times [2024-06-03 19:30:50,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:30:50,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568045394] [2024-06-03 19:30:50,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:30:50,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:30:50,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:30:51,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:30:51,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:30:51,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568045394] [2024-06-03 19:30:51,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568045394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:30:51,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:30:51,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:30:51,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770815650] [2024-06-03 19:30:51,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:30:51,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:30:51,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:30:51,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:30:51,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:30:51,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-03 19:30:51,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 126 transitions, 1034 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 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) [2024-06-03 19:30:51,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:30:51,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-03 19:30:51,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:30:54,078 INFO L124 PetriNetUnfolderBase]: 15120/20963 cut-off events. [2024-06-03 19:30:54,078 INFO L125 PetriNetUnfolderBase]: For 237289/237443 co-relation queries the response was YES. [2024-06-03 19:30:54,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102546 conditions, 20963 events. 15120/20963 cut-off events. For 237289/237443 co-relation queries the response was YES. Maximal size of possible extension queue 704. Compared 117811 event pairs, 4556 based on Foata normal form. 28/20865 useless extension candidates. Maximal degree in co-relation 102506. Up to 19153 conditions per place. [2024-06-03 19:30:54,275 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 124 selfloop transitions, 57 changer transitions 0/191 dead transitions. [2024-06-03 19:30:54,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 191 transitions, 1810 flow [2024-06-03 19:30:54,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:30:54,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:30:54,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 218 transitions. [2024-06-03 19:30:54,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5141509433962265 [2024-06-03 19:30:54,277 INFO L175 Difference]: Start difference. First operand has 96 places, 126 transitions, 1034 flow. Second operand 8 states and 218 transitions. [2024-06-03 19:30:54,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 191 transitions, 1810 flow [2024-06-03 19:30:54,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 191 transitions, 1766 flow, removed 21 selfloop flow, removed 1 redundant places. [2024-06-03 19:30:54,420 INFO L231 Difference]: Finished difference. Result has 103 places, 130 transitions, 1193 flow [2024-06-03 19:30:54,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=990, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1193, PETRI_PLACES=103, PETRI_TRANSITIONS=130} [2024-06-03 19:30:54,421 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 47 predicate places. [2024-06-03 19:30:54,421 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 130 transitions, 1193 flow [2024-06-03 19:30:54,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 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) [2024-06-03 19:30:54,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:30:54,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:30:54,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-03 19:30:54,422 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:30:54,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:30:54,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1749528366, now seen corresponding path program 2 times [2024-06-03 19:30:54,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:30:54,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011325933] [2024-06-03 19:30:54,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:30:54,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:30:54,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:30:55,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:30:55,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:30:55,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011325933] [2024-06-03 19:30:55,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011325933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:30:55,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:30:55,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:30:55,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379677697] [2024-06-03 19:30:55,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:30:55,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:30:55,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:30:55,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:30:55,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:30:55,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-03 19:30:55,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 130 transitions, 1193 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 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) [2024-06-03 19:30:55,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:30:55,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-03 19:30:55,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:30:59,393 INFO L124 PetriNetUnfolderBase]: 15438/21353 cut-off events. [2024-06-03 19:30:59,394 INFO L125 PetriNetUnfolderBase]: For 274618/274764 co-relation queries the response was YES. [2024-06-03 19:30:59,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107380 conditions, 21353 events. 15438/21353 cut-off events. For 274618/274764 co-relation queries the response was YES. Maximal size of possible extension queue 711. Compared 119852 event pairs, 5863 based on Foata normal form. 60/21261 useless extension candidates. Maximal degree in co-relation 107337. Up to 20048 conditions per place. [2024-06-03 19:30:59,576 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 139 selfloop transitions, 45 changer transitions 0/194 dead transitions. [2024-06-03 19:30:59,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 194 transitions, 1789 flow [2024-06-03 19:30:59,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:30:59,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:30:59,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 236 transitions. [2024-06-03 19:30:59,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947589098532495 [2024-06-03 19:30:59,578 INFO L175 Difference]: Start difference. First operand has 103 places, 130 transitions, 1193 flow. Second operand 9 states and 236 transitions. [2024-06-03 19:30:59,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 194 transitions, 1789 flow [2024-06-03 19:30:59,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 194 transitions, 1695 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-03 19:30:59,829 INFO L231 Difference]: Finished difference. Result has 108 places, 133 transitions, 1257 flow [2024-06-03 19:30:59,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1099, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1257, PETRI_PLACES=108, PETRI_TRANSITIONS=133} [2024-06-03 19:30:59,830 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 52 predicate places. [2024-06-03 19:30:59,830 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 133 transitions, 1257 flow [2024-06-03 19:30:59,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 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) [2024-06-03 19:30:59,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:30:59,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:30:59,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-03 19:30:59,831 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:30:59,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:30:59,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1611167141, now seen corresponding path program 1 times [2024-06-03 19:30:59,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:30:59,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887704073] [2024-06-03 19:30:59,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:30:59,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:31:00,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:31:00,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:31:00,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:31:00,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887704073] [2024-06-03 19:31:00,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887704073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:31:00,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:31:00,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:31:00,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218133910] [2024-06-03 19:31:00,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:31:00,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:31:00,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:31:00,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:31:00,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:31:00,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-03 19:31:00,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 133 transitions, 1257 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 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) [2024-06-03 19:31:00,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:31:00,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-03 19:31:00,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:31:03,589 INFO L124 PetriNetUnfolderBase]: 15817/21759 cut-off events. [2024-06-03 19:31:03,589 INFO L125 PetriNetUnfolderBase]: For 301817/301981 co-relation queries the response was YES. [2024-06-03 19:31:03,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112793 conditions, 21759 events. 15817/21759 cut-off events. For 301817/301981 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 118882 event pairs, 7030 based on Foata normal form. 6/21607 useless extension candidates. Maximal degree in co-relation 112748. Up to 21272 conditions per place. [2024-06-03 19:31:03,742 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 138 selfloop transitions, 21 changer transitions 0/167 dead transitions. [2024-06-03 19:31:03,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 167 transitions, 1813 flow [2024-06-03 19:31:03,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:31:03,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:31:03,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-03 19:31:03,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4559748427672956 [2024-06-03 19:31:03,744 INFO L175 Difference]: Start difference. First operand has 108 places, 133 transitions, 1257 flow. Second operand 6 states and 145 transitions. [2024-06-03 19:31:03,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 167 transitions, 1813 flow [2024-06-03 19:31:03,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 167 transitions, 1709 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-03 19:31:03,949 INFO L231 Difference]: Finished difference. Result has 107 places, 141 transitions, 1320 flow [2024-06-03 19:31:03,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1153, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1320, PETRI_PLACES=107, PETRI_TRANSITIONS=141} [2024-06-03 19:31:03,950 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 51 predicate places. [2024-06-03 19:31:03,950 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 141 transitions, 1320 flow [2024-06-03 19:31:03,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 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) [2024-06-03 19:31:03,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:31:03,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:31:03,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-03 19:31:03,952 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)] === [2024-06-03 19:31:03,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:31:03,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1316311338, now seen corresponding path program 1 times [2024-06-03 19:31:03,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:31:03,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688957892] [2024-06-03 19:31:03,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:31:03,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:31:03,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:31:05,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:31:05,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:31:05,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688957892] [2024-06-03 19:31:05,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688957892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:31:05,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:31:05,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:31:05,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463904561] [2024-06-03 19:31:05,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:31:05,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:31:05,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:31:05,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:31:05,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:31:05,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-03 19:31:05,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 141 transitions, 1320 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 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) [2024-06-03 19:31:05,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:31:05,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-03 19:31:05,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:31:08,382 INFO L124 PetriNetUnfolderBase]: 15853/21810 cut-off events. [2024-06-03 19:31:08,383 INFO L125 PetriNetUnfolderBase]: For 339081/339239 co-relation queries the response was YES. [2024-06-03 19:31:08,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116875 conditions, 21810 events. 15853/21810 cut-off events. For 339081/339239 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 119097 event pairs, 7034 based on Foata normal form. 6/21659 useless extension candidates. Maximal degree in co-relation 116829. Up to 21284 conditions per place. [2024-06-03 19:31:08,535 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 155 selfloop transitions, 21 changer transitions 0/184 dead transitions. [2024-06-03 19:31:08,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 184 transitions, 1834 flow [2024-06-03 19:31:08,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:31:08,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:31:08,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-03 19:31:08,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4410377358490566 [2024-06-03 19:31:08,537 INFO L175 Difference]: Start difference. First operand has 107 places, 141 transitions, 1320 flow. Second operand 8 states and 187 transitions. [2024-06-03 19:31:08,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 184 transitions, 1834 flow [2024-06-03 19:31:08,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 184 transitions, 1774 flow, removed 25 selfloop flow, removed 2 redundant places. [2024-06-03 19:31:08,724 INFO L231 Difference]: Finished difference. Result has 113 places, 144 transitions, 1376 flow [2024-06-03 19:31:08,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1260, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1376, PETRI_PLACES=113, PETRI_TRANSITIONS=144} [2024-06-03 19:31:08,724 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 57 predicate places. [2024-06-03 19:31:08,725 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 144 transitions, 1376 flow [2024-06-03 19:31:08,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 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) [2024-06-03 19:31:08,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:31:08,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:31:08,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-03 19:31:08,725 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)] === [2024-06-03 19:31:08,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:31:08,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1324882218, now seen corresponding path program 2 times [2024-06-03 19:31:08,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:31:08,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455967793] [2024-06-03 19:31:08,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:31:08,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:31:08,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:31:09,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:31:09,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:31:09,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455967793] [2024-06-03 19:31:09,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455967793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:31:09,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:31:09,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:31:09,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101113790] [2024-06-03 19:31:09,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:31:09,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:31:09,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:31:09,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:31:09,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:31:10,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-03 19:31:10,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 144 transitions, 1376 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 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) [2024-06-03 19:31:10,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:31:10,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-03 19:31:10,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:31:13,140 INFO L124 PetriNetUnfolderBase]: 15889/21862 cut-off events. [2024-06-03 19:31:13,140 INFO L125 PetriNetUnfolderBase]: For 378325/378483 co-relation queries the response was YES. [2024-06-03 19:31:13,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120835 conditions, 21862 events. 15889/21862 cut-off events. For 378325/378483 co-relation queries the response was YES. Maximal size of possible extension queue 693. Compared 119406 event pairs, 6874 based on Foata normal form. 6/21711 useless extension candidates. Maximal degree in co-relation 120787. Up to 21313 conditions per place. [2024-06-03 19:31:13,312 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 156 selfloop transitions, 23 changer transitions 0/187 dead transitions. [2024-06-03 19:31:13,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 187 transitions, 1900 flow [2024-06-03 19:31:13,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:31:13,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:31:13,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-03 19:31:13,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4410377358490566 [2024-06-03 19:31:13,314 INFO L175 Difference]: Start difference. First operand has 113 places, 144 transitions, 1376 flow. Second operand 8 states and 187 transitions. [2024-06-03 19:31:13,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 187 transitions, 1900 flow [2024-06-03 19:31:13,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 187 transitions, 1812 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-03 19:31:13,543 INFO L231 Difference]: Finished difference. Result has 116 places, 147 transitions, 1414 flow [2024-06-03 19:31:13,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1288, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1414, PETRI_PLACES=116, PETRI_TRANSITIONS=147} [2024-06-03 19:31:13,544 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 60 predicate places. [2024-06-03 19:31:13,544 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 147 transitions, 1414 flow [2024-06-03 19:31:13,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 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) [2024-06-03 19:31:13,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:31:13,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:31:13,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-03 19:31:13,545 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)] === [2024-06-03 19:31:13,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:31:13,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1244937232, now seen corresponding path program 1 times [2024-06-03 19:31:13,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:31:13,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929986130] [2024-06-03 19:31:13,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:31:13,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:31:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:31:14,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:31:14,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:31:14,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929986130] [2024-06-03 19:31:14,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929986130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:31:14,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:31:14,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:31:14,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170254727] [2024-06-03 19:31:14,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:31:14,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:31:14,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:31:14,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:31:14,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:31:14,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-03 19:31:14,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 147 transitions, 1414 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:31:14,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:31:14,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-03 19:31:14,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand