./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix018.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/protection/mix018.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix018.opt.i ./goblint.2024-05-07_14-17-48.files/protection/mix018.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-b44c828-m [2024-05-12 13:11:35,539 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 13:11:35,592 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 13:11:35,595 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 13:11:35,595 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 13:11:35,609 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 13:11:35,610 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 13:11:35,610 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 13:11:35,610 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 13:11:35,611 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 13:11:35,611 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 13:11:35,611 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 13:11:35,612 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 13:11:35,612 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 13:11:35,612 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 13:11:35,613 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 13:11:35,613 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 13:11:35,613 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 13:11:35,614 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 13:11:35,614 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 13:11:35,614 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 13:11:35,615 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 13:11:35,615 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 13:11:35,615 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 13:11:35,616 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 13:11:35,616 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 13:11:35,616 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 13:11:35,617 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 13:11:35,617 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 13:11:35,617 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 13:11:35,618 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 13:11:35,618 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 13:11:35,618 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:11:35,618 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 13:11:35,619 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 13:11:35,619 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 13:11:35,619 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 13:11:35,620 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 13:11:35,620 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 13:11:35,620 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 13:11:35,620 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 13:11:35,621 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 13:11:35,621 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 13:11:35,621 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 13:11:35,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 13:11:35,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 13:11:35,858 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 13:11:35,859 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 13:11:35,860 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 13:11:35,861 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix018.opt.i [2024-05-12 13:11:36,894 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 13:11:37,128 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 13:11:37,128 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix018.opt.i [2024-05-12 13:11:37,149 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/320c6e48a/bb91f4803cc54529b0fda30907c4d1e8/FLAGa87f6a621 [2024-05-12 13:11:37,163 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/320c6e48a/bb91f4803cc54529b0fda30907c4d1e8 [2024-05-12 13:11:37,165 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 13:11:37,170 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 13:11:37,170 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/mix018.opt.yml/witness.yml [2024-05-12 13:11:37,373 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 13:11:37,374 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 13:11:37,377 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 13:11:37,377 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 13:11:37,381 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 13:11:37,381 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:11:37" (1/2) ... [2024-05-12 13:11:37,382 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22b6a24d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:11:37, skipping insertion in model container [2024-05-12 13:11:37,382 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:11:37" (1/2) ... [2024-05-12 13:11:37,383 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7b000a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:11:37, skipping insertion in model container [2024-05-12 13:11:37,384 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:11:37" (2/2) ... [2024-05-12 13:11:37,384 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22b6a24d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:11:37, skipping insertion in model container [2024-05-12 13:11:37,384 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:11:37" (2/2) ... [2024-05-12 13:11:37,384 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 13:11:37,492 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 13:11:37,494 INFO L97 edCorrectnessWitness]: Location invariant before [L867-L867] ((((((((((((((((((((((! multithreaded || z$r_buff1_thd1 == (_Bool)0) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) [2024-05-12 13:11:37,494 INFO L97 edCorrectnessWitness]: Location invariant before [L869-L869] ((((((((((((((((((((((! multithreaded || z$r_buff1_thd1 == (_Bool)0) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) [2024-05-12 13:11:37,494 INFO L97 edCorrectnessWitness]: Location invariant before [L872-L872] ((((((((((((((((((((((! multithreaded || z$r_buff1_thd1 == (_Bool)0) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) [2024-05-12 13:11:37,494 INFO L97 edCorrectnessWitness]: Location invariant before [L871-L871] ((((((((((((((((((((((! multithreaded || z$r_buff1_thd1 == (_Bool)0) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) [2024-05-12 13:11:37,494 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 13:11:37,495 INFO L106 edCorrectnessWitness]: ghost_update [L865-L865] multithreaded = 1; [2024-05-12 13:11:37,533 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 13:11:37,796 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix018.opt.i[944,957] [2024-05-12 13:11:37,968 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:11:37,981 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-05-12 13:11:38,006 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix018.opt.i[944,957] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 13:11:38,086 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:11:38,113 INFO L206 MainTranslator]: Completed translation [2024-05-12 13:11:38,114 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:11:38 WrapperNode [2024-05-12 13:11:38,114 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 13:11:38,114 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 13:11:38,115 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 13:11:38,115 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 13:11:38,119 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 12.05 01:11:38" (1/1) ... [2024-05-12 13:11:38,132 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 12.05 01:11:38" (1/1) ... [2024-05-12 13:11:38,159 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 171 [2024-05-12 13:11:38,160 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 13:11:38,160 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 13:11:38,160 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 13:11:38,161 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 13:11:38,169 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:11:38" (1/1) ... [2024-05-12 13:11:38,169 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:11:38" (1/1) ... [2024-05-12 13:11:38,177 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:11:38" (1/1) ... [2024-05-12 13:11:38,208 INFO L175 MemorySlicer]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-05-12 13:11:38,209 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:11:38" (1/1) ... [2024-05-12 13:11:38,209 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:11:38" (1/1) ... [2024-05-12 13:11:38,217 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:11:38" (1/1) ... [2024-05-12 13:11:38,233 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:11:38" (1/1) ... [2024-05-12 13:11:38,235 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:11:38" (1/1) ... [2024-05-12 13:11:38,236 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:11:38" (1/1) ... [2024-05-12 13:11:38,240 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 13:11:38,246 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 13:11:38,246 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 13:11:38,246 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 13:11:38,247 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:11:38" (1/1) ... [2024-05-12 13:11:38,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:11:38,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 13:11:38,297 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-05-12 13:11:38,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-05-12 13:11:38,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 13:11:38,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 13:11:38,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 13:11:38,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 13:11:38,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-05-12 13:11:38,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 13:11:38,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 13:11:38,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 13:11:38,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 13:11:38,330 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-05-12 13:11:38,330 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-05-12 13:11:38,331 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-05-12 13:11:38,331 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-05-12 13:11:38,332 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-05-12 13:11:38,332 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-05-12 13:11:38,332 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-05-12 13:11:38,332 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-05-12 13:11:38,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 13:11:38,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 13:11:38,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 13:11:38,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 13:11:38,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-05-12 13:11:38,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 13:11:38,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 13:11:38,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 13:11:38,334 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 13:11:38,479 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 13:11:38,481 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 13:11:38,866 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 13:11:38,867 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 13:11:39,052 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 13:11:39,052 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 13:11:39,053 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:11:39 BoogieIcfgContainer [2024-05-12 13:11:39,053 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 13:11:39,054 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 13:11:39,054 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 13:11:39,057 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 13:11:39,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 01:11:37" (1/4) ... [2024-05-12 13:11:39,058 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b13d7c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:11:39, skipping insertion in model container [2024-05-12 13:11:39,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:11:37" (2/4) ... [2024-05-12 13:11:39,058 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b13d7c7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:11:39, skipping insertion in model container [2024-05-12 13:11:39,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:11:38" (3/4) ... [2024-05-12 13:11:39,058 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b13d7c7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:11:39, skipping insertion in model container [2024-05-12 13:11:39,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:11:39" (4/4) ... [2024-05-12 13:11:39,059 INFO L112 eAbstractionObserver]: Analyzing ICFG mix018.opt.i [2024-05-12 13:11:39,072 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 13:11:39,073 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-05-12 13:11:39,073 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 13:11:39,129 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 13:11:39,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 59 transitions, 134 flow [2024-05-12 13:11:39,200 INFO L124 PetriNetUnfolderBase]: 1/55 cut-off events. [2024-05-12 13:11:39,200 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:11:39,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 55 events. 1/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 104 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2024-05-12 13:11:39,204 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 59 transitions, 134 flow [2024-05-12 13:11:39,207 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 55 transitions, 122 flow [2024-05-12 13:11:39,218 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 13:11:39,225 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;@79b5bd03, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 13:11:39,225 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-05-12 13:11:39,230 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 13:11:39,231 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 13:11:39,231 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:11:39,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:39,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 13:11:39,232 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:11:39,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:39,238 INFO L85 PathProgramCache]: Analyzing trace with hash -278214740, now seen corresponding path program 1 times [2024-05-12 13:11:39,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:39,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294068883] [2024-05-12 13:11:39,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:39,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:39,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:40,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:40,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:40,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294068883] [2024-05-12 13:11:40,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294068883] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:40,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:40,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:11:40,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847156855] [2024-05-12 13:11:40,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:40,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:11:40,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:40,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:11:40,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:11:40,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 59 [2024-05-12 13:11:40,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 55 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:40,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:40,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 59 [2024-05-12 13:11:40,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:42,443 INFO L124 PetriNetUnfolderBase]: 16085/24322 cut-off events. [2024-05-12 13:11:42,443 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-05-12 13:11:42,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46064 conditions, 24322 events. 16085/24322 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 1008. Compared 174756 event pairs, 13643 based on Foata normal form. 601/23212 useless extension candidates. Maximal degree in co-relation 46048. Up to 21467 conditions per place. [2024-05-12 13:11:42,566 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 52 selfloop transitions, 6 changer transitions 0/73 dead transitions. [2024-05-12 13:11:42,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 73 transitions, 283 flow [2024-05-12 13:11:42,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:11:42,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:11:42,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2024-05-12 13:11:42,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6836158192090396 [2024-05-12 13:11:42,577 INFO L175 Difference]: Start difference. First operand has 67 places, 55 transitions, 122 flow. Second operand 3 states and 121 transitions. [2024-05-12 13:11:42,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 73 transitions, 283 flow [2024-05-12 13:11:42,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 73 transitions, 276 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-05-12 13:11:42,582 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 162 flow [2024-05-12 13:11:42,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2024-05-12 13:11:42,586 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -1 predicate places. [2024-05-12 13:11:42,586 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 162 flow [2024-05-12 13:11:42,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:42,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:42,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:42,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 13:11:42,587 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:11:42,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:42,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1076373557, now seen corresponding path program 1 times [2024-05-12 13:11:42,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:42,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628156917] [2024-05-12 13:11:42,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:42,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:42,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:43,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:43,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:43,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628156917] [2024-05-12 13:11:43,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628156917] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:43,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:43,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 13:11:43,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161875367] [2024-05-12 13:11:43,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:43,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 13:11:43,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:43,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 13:11:43,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 13:11:43,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 59 [2024-05-12 13:11:43,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 162 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:43,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:43,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 59 [2024-05-12 13:11:43,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:45,510 INFO L124 PetriNetUnfolderBase]: 18319/27409 cut-off events. [2024-05-12 13:11:45,511 INFO L125 PetriNetUnfolderBase]: For 4539/4539 co-relation queries the response was YES. [2024-05-12 13:11:45,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58367 conditions, 27409 events. 18319/27409 cut-off events. For 4539/4539 co-relation queries the response was YES. Maximal size of possible extension queue 1129. Compared 194745 event pairs, 14036 based on Foata normal form. 4/25875 useless extension candidates. Maximal degree in co-relation 58352. Up to 24368 conditions per place. [2024-05-12 13:11:45,640 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 67 selfloop transitions, 11 changer transitions 0/92 dead transitions. [2024-05-12 13:11:45,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 92 transitions, 404 flow [2024-05-12 13:11:45,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 13:11:45,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 13:11:45,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 154 transitions. [2024-05-12 13:11:45,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.652542372881356 [2024-05-12 13:11:45,653 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 162 flow. Second operand 4 states and 154 transitions. [2024-05-12 13:11:45,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 92 transitions, 404 flow [2024-05-12 13:11:45,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 92 transitions, 398 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 13:11:45,656 INFO L231 Difference]: Finished difference. Result has 69 places, 64 transitions, 220 flow [2024-05-12 13:11:45,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=220, PETRI_PLACES=69, PETRI_TRANSITIONS=64} [2024-05-12 13:11:45,657 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 2 predicate places. [2024-05-12 13:11:45,657 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 64 transitions, 220 flow [2024-05-12 13:11:45,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:45,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:45,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:45,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 13:11:45,658 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:11:45,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:45,659 INFO L85 PathProgramCache]: Analyzing trace with hash 992158763, now seen corresponding path program 1 times [2024-05-12 13:11:45,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:45,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304092896] [2024-05-12 13:11:45,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:45,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:45,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:46,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:46,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:46,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304092896] [2024-05-12 13:11:46,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304092896] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:46,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:46,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 13:11:46,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221437041] [2024-05-12 13:11:46,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:46,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 13:11:46,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:46,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 13:11:46,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-05-12 13:11:46,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 59 [2024-05-12 13:11:46,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 64 transitions, 220 flow. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:46,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:46,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 59 [2024-05-12 13:11:46,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:48,762 INFO L124 PetriNetUnfolderBase]: 18359/27493 cut-off events. [2024-05-12 13:11:48,762 INFO L125 PetriNetUnfolderBase]: For 12649/12649 co-relation queries the response was YES. [2024-05-12 13:11:48,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64790 conditions, 27493 events. 18359/27493 cut-off events. For 12649/12649 co-relation queries the response was YES. Maximal size of possible extension queue 1129. Compared 195463 event pairs, 11264 based on Foata normal form. 7/25971 useless extension candidates. Maximal degree in co-relation 64773. Up to 24271 conditions per place. [2024-05-12 13:11:48,893 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 89 selfloop transitions, 26 changer transitions 0/129 dead transitions. [2024-05-12 13:11:48,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 129 transitions, 666 flow [2024-05-12 13:11:48,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:11:48,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:11:48,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 201 transitions. [2024-05-12 13:11:48,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6813559322033899 [2024-05-12 13:11:48,897 INFO L175 Difference]: Start difference. First operand has 69 places, 64 transitions, 220 flow. Second operand 5 states and 201 transitions. [2024-05-12 13:11:48,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 129 transitions, 666 flow [2024-05-12 13:11:48,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 129 transitions, 642 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-05-12 13:11:48,903 INFO L231 Difference]: Finished difference. Result has 74 places, 81 transitions, 381 flow [2024-05-12 13:11:48,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=381, PETRI_PLACES=74, PETRI_TRANSITIONS=81} [2024-05-12 13:11:48,904 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 7 predicate places. [2024-05-12 13:11:48,904 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 81 transitions, 381 flow [2024-05-12 13:11:48,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:48,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:48,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:48,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 13:11:48,905 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:11:48,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:48,905 INFO L85 PathProgramCache]: Analyzing trace with hash -18146262, now seen corresponding path program 1 times [2024-05-12 13:11:48,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:48,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666628953] [2024-05-12 13:11:48,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:48,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:48,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:49,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:49,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:49,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666628953] [2024-05-12 13:11:49,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666628953] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:49,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:49,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:11:49,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892995858] [2024-05-12 13:11:49,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:49,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:11:49,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:49,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:11:49,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:11:49,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 59 [2024-05-12 13:11:49,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 81 transitions, 381 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:49,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:49,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 59 [2024-05-12 13:11:49,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:52,371 INFO L124 PetriNetUnfolderBase]: 18659/27895 cut-off events. [2024-05-12 13:11:52,371 INFO L125 PetriNetUnfolderBase]: For 31150/31177 co-relation queries the response was YES. [2024-05-12 13:11:52,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76670 conditions, 27895 events. 18659/27895 cut-off events. For 31150/31177 co-relation queries the response was YES. Maximal size of possible extension queue 1138. Compared 197741 event pairs, 9363 based on Foata normal form. 56/26368 useless extension candidates. Maximal degree in co-relation 76650. Up to 24357 conditions per place. [2024-05-12 13:11:52,581 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 103 selfloop transitions, 30 changer transitions 0/147 dead transitions. [2024-05-12 13:11:52,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 147 transitions, 859 flow [2024-05-12 13:11:52,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:11:52,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:11:52,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 237 transitions. [2024-05-12 13:11:52,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6694915254237288 [2024-05-12 13:11:52,583 INFO L175 Difference]: Start difference. First operand has 74 places, 81 transitions, 381 flow. Second operand 6 states and 237 transitions. [2024-05-12 13:11:52,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 147 transitions, 859 flow [2024-05-12 13:11:52,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 147 transitions, 843 flow, removed 8 selfloop flow, removed 0 redundant places. [2024-05-12 13:11:52,595 INFO L231 Difference]: Finished difference. Result has 79 places, 84 transitions, 469 flow [2024-05-12 13:11:52,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=469, PETRI_PLACES=79, PETRI_TRANSITIONS=84} [2024-05-12 13:11:52,597 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 12 predicate places. [2024-05-12 13:11:52,597 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 84 transitions, 469 flow [2024-05-12 13:11:52,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:52,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:52,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:52,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 13:11:52,597 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:11:52,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:52,598 INFO L85 PathProgramCache]: Analyzing trace with hash -137158364, now seen corresponding path program 1 times [2024-05-12 13:11:52,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:52,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212632402] [2024-05-12 13:11:52,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:52,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:52,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:53,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:53,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:53,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212632402] [2024-05-12 13:11:53,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212632402] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:53,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:53,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:11:53,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940449311] [2024-05-12 13:11:53,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:53,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:11:53,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:53,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:11:53,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:11:53,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 59 [2024-05-12 13:11:53,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 84 transitions, 469 flow. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:53,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:53,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 59 [2024-05-12 13:11:53,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:56,139 INFO L124 PetriNetUnfolderBase]: 18688/25859 cut-off events. [2024-05-12 13:11:56,140 INFO L125 PetriNetUnfolderBase]: For 39116/39148 co-relation queries the response was YES. [2024-05-12 13:11:56,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80690 conditions, 25859 events. 18688/25859 cut-off events. For 39116/39148 co-relation queries the response was YES. Maximal size of possible extension queue 992. Compared 160279 event pairs, 7467 based on Foata normal form. 3/24756 useless extension candidates. Maximal degree in co-relation 80667. Up to 24869 conditions per place. [2024-05-12 13:11:56,331 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 85 selfloop transitions, 12 changer transitions 0/111 dead transitions. [2024-05-12 13:11:56,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 111 transitions, 727 flow [2024-05-12 13:11:56,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:11:56,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:11:56,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 169 transitions. [2024-05-12 13:11:56,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5728813559322034 [2024-05-12 13:11:56,333 INFO L175 Difference]: Start difference. First operand has 79 places, 84 transitions, 469 flow. Second operand 5 states and 169 transitions. [2024-05-12 13:11:56,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 111 transitions, 727 flow [2024-05-12 13:11:56,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 111 transitions, 649 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-05-12 13:11:56,349 INFO L231 Difference]: Finished difference. Result has 80 places, 84 transitions, 427 flow [2024-05-12 13:11:56,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=427, PETRI_PLACES=80, PETRI_TRANSITIONS=84} [2024-05-12 13:11:56,351 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 13 predicate places. [2024-05-12 13:11:56,352 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 84 transitions, 427 flow [2024-05-12 13:11:56,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:56,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:56,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:56,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 13:11:56,353 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:11:56,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:56,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1306936263, now seen corresponding path program 1 times [2024-05-12 13:11:56,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:56,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872350443] [2024-05-12 13:11:56,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:56,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:56,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:57,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:57,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:57,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872350443] [2024-05-12 13:11:57,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872350443] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:57,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:57,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:11:57,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189702278] [2024-05-12 13:11:57,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:57,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:11:57,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:57,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:11:57,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:11:57,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2024-05-12 13:11:57,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 84 transitions, 427 flow. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:57,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:57,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2024-05-12 13:11:57,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:12:00,626 INFO L124 PetriNetUnfolderBase]: 21307/28707 cut-off events. [2024-05-12 13:12:00,626 INFO L125 PetriNetUnfolderBase]: For 48712/48742 co-relation queries the response was YES. [2024-05-12 13:12:00,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89727 conditions, 28707 events. 21307/28707 cut-off events. For 48712/48742 co-relation queries the response was YES. Maximal size of possible extension queue 1086. Compared 171400 event pairs, 8581 based on Foata normal form. 34/27846 useless extension candidates. Maximal degree in co-relation 89702. Up to 28117 conditions per place. [2024-05-12 13:12:00,803 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 90 selfloop transitions, 31 changer transitions 0/134 dead transitions. [2024-05-12 13:12:00,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 134 transitions, 845 flow [2024-05-12 13:12:00,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:12:00,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:12:00,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 209 transitions. [2024-05-12 13:12:00,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5903954802259888 [2024-05-12 13:12:00,808 INFO L175 Difference]: Start difference. First operand has 80 places, 84 transitions, 427 flow. Second operand 6 states and 209 transitions. [2024-05-12 13:12:00,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 134 transitions, 845 flow [2024-05-12 13:12:00,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 134 transitions, 809 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-05-12 13:12:00,830 INFO L231 Difference]: Finished difference. Result has 82 places, 89 transitions, 509 flow [2024-05-12 13:12:00,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=509, PETRI_PLACES=82, PETRI_TRANSITIONS=89} [2024-05-12 13:12:00,833 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 15 predicate places. [2024-05-12 13:12:00,833 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 89 transitions, 509 flow [2024-05-12 13:12:00,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:00,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:12:00,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:12:00,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 13:12:00,834 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:12:00,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:12:00,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1334849283, now seen corresponding path program 2 times [2024-05-12 13:12:00,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:12:00,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151037040] [2024-05-12 13:12:00,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:12:00,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:12:00,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:12:01,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:12:01,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:12:01,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151037040] [2024-05-12 13:12:01,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151037040] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:12:01,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:12:01,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:12:01,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870697656] [2024-05-12 13:12:01,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:12:01,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:12:01,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:12:01,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:12:01,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:12:01,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2024-05-12 13:12:01,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 89 transitions, 509 flow. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:01,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:12:01,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2024-05-12 13:12:01,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:12:04,821 INFO L124 PetriNetUnfolderBase]: 21252/28634 cut-off events. [2024-05-12 13:12:04,821 INFO L125 PetriNetUnfolderBase]: For 53914/53950 co-relation queries the response was YES. [2024-05-12 13:12:04,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90670 conditions, 28634 events. 21252/28634 cut-off events. For 53914/53950 co-relation queries the response was YES. Maximal size of possible extension queue 1086. Compared 170766 event pairs, 8605 based on Foata normal form. 34/27776 useless extension candidates. Maximal degree in co-relation 90645. Up to 28038 conditions per place. [2024-05-12 13:12:05,187 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 83 selfloop transitions, 32 changer transitions 0/128 dead transitions. [2024-05-12 13:12:05,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 128 transitions, 831 flow [2024-05-12 13:12:05,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:12:05,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:12:05,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 204 transitions. [2024-05-12 13:12:05,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.576271186440678 [2024-05-12 13:12:05,196 INFO L175 Difference]: Start difference. First operand has 82 places, 89 transitions, 509 flow. Second operand 6 states and 204 transitions. [2024-05-12 13:12:05,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 128 transitions, 831 flow [2024-05-12 13:12:05,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 128 transitions, 774 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-05-12 13:12:05,224 INFO L231 Difference]: Finished difference. Result has 85 places, 89 transitions, 528 flow [2024-05-12 13:12:05,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=528, PETRI_PLACES=85, PETRI_TRANSITIONS=89} [2024-05-12 13:12:05,225 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 18 predicate places. [2024-05-12 13:12:05,225 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 89 transitions, 528 flow [2024-05-12 13:12:05,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:05,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:12:05,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:12:05,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 13:12:05,230 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:12:05,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:12:05,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1866995495, now seen corresponding path program 1 times [2024-05-12 13:12:05,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:12:05,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232806347] [2024-05-12 13:12:05,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:12:05,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:12:05,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:12:06,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:12:06,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:12:06,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232806347] [2024-05-12 13:12:06,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232806347] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:12:06,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:12:06,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:12:06,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611479629] [2024-05-12 13:12:06,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:12:06,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:12:06,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:12:06,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:12:06,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:12:06,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2024-05-12 13:12:06,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 89 transitions, 528 flow. Second operand has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:06,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:12:06,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2024-05-12 13:12:06,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:12:09,834 INFO L124 PetriNetUnfolderBase]: 23769/32776 cut-off events. [2024-05-12 13:12:09,834 INFO L125 PetriNetUnfolderBase]: For 62819/62819 co-relation queries the response was YES. [2024-05-12 13:12:09,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101992 conditions, 32776 events. 23769/32776 cut-off events. For 62819/62819 co-relation queries the response was YES. Maximal size of possible extension queue 1135. Compared 202620 event pairs, 9547 based on Foata normal form. 6/31405 useless extension candidates. Maximal degree in co-relation 101966. Up to 31412 conditions per place. [2024-05-12 13:12:10,087 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 116 selfloop transitions, 21 changer transitions 0/150 dead transitions. [2024-05-12 13:12:10,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 150 transitions, 997 flow [2024-05-12 13:12:10,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:12:10,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:12:10,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 233 transitions. [2024-05-12 13:12:10,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5641646489104116 [2024-05-12 13:12:10,089 INFO L175 Difference]: Start difference. First operand has 85 places, 89 transitions, 528 flow. Second operand 7 states and 233 transitions. [2024-05-12 13:12:10,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 150 transitions, 997 flow [2024-05-12 13:12:10,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 150 transitions, 885 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-05-12 13:12:10,126 INFO L231 Difference]: Finished difference. Result has 87 places, 98 transitions, 558 flow [2024-05-12 13:12:10,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=558, PETRI_PLACES=87, PETRI_TRANSITIONS=98} [2024-05-12 13:12:10,126 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 20 predicate places. [2024-05-12 13:12:10,127 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 98 transitions, 558 flow [2024-05-12 13:12:10,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:10,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:12:10,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:12:10,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 13:12:10,127 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:12:10,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:12:10,128 INFO L85 PathProgramCache]: Analyzing trace with hash 633465290, now seen corresponding path program 1 times [2024-05-12 13:12:10,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:12:10,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185613264] [2024-05-12 13:12:10,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:12:10,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:12:10,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:12:11,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:12:11,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:12:11,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185613264] [2024-05-12 13:12:11,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185613264] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:12:11,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:12:11,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:12:11,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568940615] [2024-05-12 13:12:11,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:12:11,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:12:11,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:12:11,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:12:11,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:12:11,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2024-05-12 13:12:11,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 98 transitions, 558 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:11,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:12:11,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2024-05-12 13:12:11,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:12:14,470 INFO L124 PetriNetUnfolderBase]: 23753/32899 cut-off events. [2024-05-12 13:12:14,470 INFO L125 PetriNetUnfolderBase]: For 77927/77927 co-relation queries the response was YES. [2024-05-12 13:12:14,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108721 conditions, 32899 events. 23753/32899 cut-off events. For 77927/77927 co-relation queries the response was YES. Maximal size of possible extension queue 1143. Compared 202753 event pairs, 9731 based on Foata normal form. 4/31801 useless extension candidates. Maximal degree in co-relation 108693. Up to 31454 conditions per place. [2024-05-12 13:12:14,724 INFO L140 encePairwiseOnDemand]: 49/59 looper letters, 103 selfloop transitions, 12 changer transitions 0/128 dead transitions. [2024-05-12 13:12:14,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 128 transitions, 890 flow [2024-05-12 13:12:14,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:12:14,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:12:14,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2024-05-12 13:12:14,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5491525423728814 [2024-05-12 13:12:14,729 INFO L175 Difference]: Start difference. First operand has 87 places, 98 transitions, 558 flow. Second operand 5 states and 162 transitions. [2024-05-12 13:12:14,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 128 transitions, 890 flow [2024-05-12 13:12:14,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 128 transitions, 827 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-05-12 13:12:14,784 INFO L231 Difference]: Finished difference. Result has 88 places, 103 transitions, 583 flow [2024-05-12 13:12:14,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=583, PETRI_PLACES=88, PETRI_TRANSITIONS=103} [2024-05-12 13:12:14,785 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 21 predicate places. [2024-05-12 13:12:14,786 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 103 transitions, 583 flow [2024-05-12 13:12:14,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:14,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:12:14,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:12:14,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-05-12 13:12:14,793 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:12:14,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:12:14,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1838616618, now seen corresponding path program 1 times [2024-05-12 13:12:14,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:12:14,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518556447] [2024-05-12 13:12:14,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:12:14,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:12:14,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:12:14,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:12:14,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:12:14,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518556447] [2024-05-12 13:12:14,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518556447] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:12:14,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:12:14,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:12:14,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475313525] [2024-05-12 13:12:14,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:12:14,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:12:14,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:12:14,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:12:14,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:12:14,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 59 [2024-05-12 13:12:14,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 103 transitions, 583 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:14,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:12:14,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 59 [2024-05-12 13:12:14,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:12:16,428 INFO L124 PetriNetUnfolderBase]: 7249/13899 cut-off events. [2024-05-12 13:12:16,429 INFO L125 PetriNetUnfolderBase]: For 28033/30005 co-relation queries the response was YES. [2024-05-12 13:12:16,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34784 conditions, 13899 events. 7249/13899 cut-off events. For 28033/30005 co-relation queries the response was YES. Maximal size of possible extension queue 878. Compared 131004 event pairs, 2258 based on Foata normal form. 4/12489 useless extension candidates. Maximal degree in co-relation 34755. Up to 8550 conditions per place. [2024-05-12 13:12:16,523 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 33 selfloop transitions, 12 changer transitions 0/101 dead transitions. [2024-05-12 13:12:16,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 101 transitions, 608 flow [2024-05-12 13:12:16,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:12:16,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:12:16,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 129 transitions. [2024-05-12 13:12:16,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7288135593220338 [2024-05-12 13:12:16,525 INFO L175 Difference]: Start difference. First operand has 88 places, 103 transitions, 583 flow. Second operand 3 states and 129 transitions. [2024-05-12 13:12:16,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 101 transitions, 608 flow [2024-05-12 13:12:16,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 101 transitions, 569 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-05-12 13:12:16,538 INFO L231 Difference]: Finished difference. Result has 86 places, 92 transitions, 485 flow [2024-05-12 13:12:16,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=485, PETRI_PLACES=86, PETRI_TRANSITIONS=92} [2024-05-12 13:12:16,539 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 19 predicate places. [2024-05-12 13:12:16,539 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 92 transitions, 485 flow [2024-05-12 13:12:16,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:16,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:12:16,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:12:16,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-05-12 13:12:16,540 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:12:16,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:12:16,540 INFO L85 PathProgramCache]: Analyzing trace with hash -759289870, now seen corresponding path program 1 times [2024-05-12 13:12:16,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:12:16,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130101854] [2024-05-12 13:12:16,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:12:16,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:12:16,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:12:17,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:12:17,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:12:17,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130101854] [2024-05-12 13:12:17,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130101854] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:12:17,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:12:17,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:12:17,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509305658] [2024-05-12 13:12:17,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:12:17,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:12:17,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:12:17,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:12:17,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:12:17,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2024-05-12 13:12:17,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 92 transitions, 485 flow. Second operand has 8 states, 8 states have (on average 18.625) internal successors, (149), 8 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:17,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:12:17,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2024-05-12 13:12:17,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand