./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cde23df1 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/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-05-21_14-57-05.files/protection/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-cde23df-m [2024-06-14 11:18:29,492 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 11:18:29,576 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 11:18:29,582 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 11:18:29,583 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 11:18:29,612 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 11:18:29,612 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 11:18:29,613 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 11:18:29,613 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 11:18:29,617 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 11:18:29,617 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 11:18:29,618 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 11:18:29,619 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 11:18:29,620 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 11:18:29,620 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 11:18:29,620 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 11:18:29,621 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 11:18:29,621 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 11:18:29,621 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 11:18:29,621 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 11:18:29,622 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 11:18:29,622 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 11:18:29,622 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 11:18:29,623 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 11:18:29,623 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 11:18:29,623 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 11:18:29,624 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 11:18:29,624 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 11:18:29,624 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 11:18:29,625 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 11:18:29,626 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 11:18:29,626 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 11:18:29,626 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 11:18:29,626 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 11:18:29,627 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 11:18:29,627 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 11:18:29,627 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 11:18:29,627 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 11:18:29,627 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 11:18:29,628 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 11:18:29,628 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 11:18:29,628 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 11:18:29,628 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 11:18:29,629 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 11:18:29,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 11:18:29,910 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 11:18:29,913 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 11:18:29,914 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 11:18:29,914 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 11:18:29,915 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-14 11:18:31,036 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 11:18:31,283 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 11:18:31,284 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-14 11:18:31,298 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58b5ff616/fe6b9b9ab2ed4efdacb0a8d0d9d96d7b/FLAG6de98c20e [2024-06-14 11:18:31,610 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58b5ff616/fe6b9b9ab2ed4efdacb0a8d0d9d96d7b [2024-06-14 11:18:31,613 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 11:18:31,614 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 11:18:31,614 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-14 11:18:31,799 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 11:18:31,800 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 11:18:31,801 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 11:18:31,802 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 11:18:31,815 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 11:18:31,816 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 11:18:31" (1/2) ... [2024-06-14 11:18:31,817 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b2e1ef9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:18:31, skipping insertion in model container [2024-06-14 11:18:31,817 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 11:18:31" (1/2) ... [2024-06-14 11:18:31,820 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4db092c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:18:31, skipping insertion in model container [2024-06-14 11:18:31,820 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:18:31" (2/2) ... [2024-06-14 11:18:31,820 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b2e1ef9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:18:31, skipping insertion in model container [2024-06-14 11:18:31,821 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:18:31" (2/2) ... [2024-06-14 11:18:31,821 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 11:18:31,900 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 11:18:31,902 INFO L97 edCorrectnessWitness]: Location invariant before [L839-L839] (((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 2) && __unbuffered_p1_EBX <= 127) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 2) && __unbuffered_p0_EAX <= 127) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) [2024-06-14 11:18:31,902 INFO L97 edCorrectnessWitness]: Location invariant before [L840-L840] (((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 2) && __unbuffered_p1_EBX <= 127) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 2) && __unbuffered_p0_EAX <= 127) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) [2024-06-14 11:18:31,902 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 11:18:31,902 INFO L106 edCorrectnessWitness]: ghost_update [L837-L837] multithreaded = 1; [2024-06-14 11:18:31,951 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 11:18:32,343 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 11:18:32,352 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 11:18:32,493 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 11:18:32,549 INFO L206 MainTranslator]: Completed translation [2024-06-14 11:18:32,550 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:18:32 WrapperNode [2024-06-14 11:18:32,550 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 11:18:32,551 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 11:18:32,551 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 11:18:32,551 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 11:18:32,558 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 14.06 11:18:32" (1/1) ... [2024-06-14 11:18:32,592 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 14.06 11:18:32" (1/1) ... [2024-06-14 11:18:32,637 INFO L138 Inliner]: procedures = 174, calls = 40, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 158 [2024-06-14 11:18:32,638 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 11:18:32,640 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 11:18:32,640 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 11:18:32,640 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 11:18:32,651 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:18:32" (1/1) ... [2024-06-14 11:18:32,652 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:18:32" (1/1) ... [2024-06-14 11:18:32,670 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:18:32" (1/1) ... [2024-06-14 11:18:32,698 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-14 11:18:32,699 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:18:32" (1/1) ... [2024-06-14 11:18:32,699 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:18:32" (1/1) ... [2024-06-14 11:18:32,711 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:18:32" (1/1) ... [2024-06-14 11:18:32,726 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:18:32" (1/1) ... [2024-06-14 11:18:32,728 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:18:32" (1/1) ... [2024-06-14 11:18:32,736 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:18:32" (1/1) ... [2024-06-14 11:18:32,740 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 11:18:32,744 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 11:18:32,745 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 11:18:32,745 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 11:18:32,746 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:18:32" (1/1) ... [2024-06-14 11:18:32,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 11:18:32,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 11:18:32,778 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-14 11:18:32,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-14 11:18:32,820 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 11:18:32,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 11:18:32,821 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-14 11:18:32,821 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-14 11:18:32,822 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-14 11:18:32,822 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-14 11:18:32,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 11:18:32,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 11:18:32,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 11:18:32,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 11:18:32,824 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 11:18:32,978 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 11:18:32,980 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 11:18:33,346 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 11:18:33,347 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 11:18:33,535 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 11:18:33,536 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 11:18:33,536 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 11:18:33 BoogieIcfgContainer [2024-06-14 11:18:33,536 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 11:18:33,538 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 11:18:33,538 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 11:18:33,541 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 11:18:33,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 11:18:31" (1/4) ... [2024-06-14 11:18:33,542 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37d4697 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 11:18:33, skipping insertion in model container [2024-06-14 11:18:33,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:18:31" (2/4) ... [2024-06-14 11:18:33,543 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37d4697 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 11:18:33, skipping insertion in model container [2024-06-14 11:18:33,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:18:32" (3/4) ... [2024-06-14 11:18:33,543 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37d4697 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 11:18:33, skipping insertion in model container [2024-06-14 11:18:33,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 11:18:33" (4/4) ... [2024-06-14 11:18:33,544 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-14 11:18:33,561 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 11:18:33,561 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-14 11:18:33,562 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 11:18:33,607 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 11:18:33,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 33 transitions, 74 flow [2024-06-14 11:18:33,669 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2024-06-14 11:18:33,670 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 11:18:33,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 31 events. 0/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 42 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-14 11:18:33,672 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 33 transitions, 74 flow [2024-06-14 11:18:33,674 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 25 transitions, 56 flow [2024-06-14 11:18:33,683 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 11:18:33,689 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;@33a44d6a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 11:18:33,689 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-14 11:18:33,693 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 11:18:33,694 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-14 11:18:33,694 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 11:18:33,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:33,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 11:18:33,695 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:33,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:33,700 INFO L85 PathProgramCache]: Analyzing trace with hash -206534661, now seen corresponding path program 1 times [2024-06-14 11:18:33,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:33,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478109582] [2024-06-14 11:18:33,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:33,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:33,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:34,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:34,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:34,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478109582] [2024-06-14 11:18:34,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478109582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:34,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:34,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 11:18:34,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722887525] [2024-06-14 11:18:34,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:34,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 11:18:34,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:35,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 11:18:35,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 11:18:35,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:18:35,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:35,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:35,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:18:35,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:35,297 INFO L124 PetriNetUnfolderBase]: 225/415 cut-off events. [2024-06-14 11:18:35,297 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-14 11:18:35,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 836 conditions, 415 events. 225/415 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1563 event pairs, 141 based on Foata normal form. 1/401 useless extension candidates. Maximal degree in co-relation 822. Up to 394 conditions per place. [2024-06-14 11:18:35,305 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 25 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2024-06-14 11:18:35,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 31 transitions, 127 flow [2024-06-14 11:18:35,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 11:18:35,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 11:18:35,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2024-06-14 11:18:35,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2024-06-14 11:18:35,322 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 56 flow. Second operand 3 states and 51 transitions. [2024-06-14 11:18:35,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 31 transitions, 127 flow [2024-06-14 11:18:35,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 31 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 11:18:35,327 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 75 flow [2024-06-14 11:18:35,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2024-06-14 11:18:35,333 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2024-06-14 11:18:35,333 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 75 flow [2024-06-14 11:18:35,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:35,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:35,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:35,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 11:18:35,334 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:35,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:35,337 INFO L85 PathProgramCache]: Analyzing trace with hash -911296742, now seen corresponding path program 1 times [2024-06-14 11:18:35,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:35,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888268373] [2024-06-14 11:18:35,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:35,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:35,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:36,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:36,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:36,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888268373] [2024-06-14 11:18:36,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888268373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:36,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:36,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 11:18:36,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698803276] [2024-06-14 11:18:36,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:36,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 11:18:36,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:36,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 11:18:36,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-14 11:18:36,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:18:36,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 75 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:36,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:36,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:18:36,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:36,274 INFO L124 PetriNetUnfolderBase]: 219/411 cut-off events. [2024-06-14 11:18:36,274 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2024-06-14 11:18:36,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 921 conditions, 411 events. 219/411 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1545 event pairs, 99 based on Foata normal form. 4/411 useless extension candidates. Maximal degree in co-relation 906. Up to 366 conditions per place. [2024-06-14 11:18:36,281 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 30 selfloop transitions, 5 changer transitions 0/38 dead transitions. [2024-06-14 11:18:36,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 38 transitions, 173 flow [2024-06-14 11:18:36,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 11:18:36,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 11:18:36,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions. [2024-06-14 11:18:36,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49242424242424243 [2024-06-14 11:18:36,285 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 75 flow. Second operand 4 states and 65 transitions. [2024-06-14 11:18:36,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 38 transitions, 173 flow [2024-06-14 11:18:36,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 38 transitions, 170 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 11:18:36,292 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 99 flow [2024-06-14 11:18:36,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=99, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2024-06-14 11:18:36,293 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 4 predicate places. [2024-06-14 11:18:36,293 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 99 flow [2024-06-14 11:18:36,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:36,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:36,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:36,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 11:18:36,295 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:36,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:36,300 INFO L85 PathProgramCache]: Analyzing trace with hash 417178169, now seen corresponding path program 1 times [2024-06-14 11:18:36,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:36,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531527660] [2024-06-14 11:18:36,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:36,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:37,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:37,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:37,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531527660] [2024-06-14 11:18:37,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531527660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:37,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:37,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 11:18:37,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916510898] [2024-06-14 11:18:37,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:37,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 11:18:37,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:37,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 11:18:37,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-14 11:18:37,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:18:37,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 99 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:37,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:37,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:18:37,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:38,019 INFO L124 PetriNetUnfolderBase]: 213/399 cut-off events. [2024-06-14 11:18:38,020 INFO L125 PetriNetUnfolderBase]: For 214/214 co-relation queries the response was YES. [2024-06-14 11:18:38,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 987 conditions, 399 events. 213/399 cut-off events. For 214/214 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1474 event pairs, 57 based on Foata normal form. 4/397 useless extension candidates. Maximal degree in co-relation 970. Up to 338 conditions per place. [2024-06-14 11:18:38,024 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 35 selfloop transitions, 7 changer transitions 0/45 dead transitions. [2024-06-14 11:18:38,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 45 transitions, 225 flow [2024-06-14 11:18:38,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 11:18:38,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 11:18:38,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 79 transitions. [2024-06-14 11:18:38,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47878787878787876 [2024-06-14 11:18:38,029 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 99 flow. Second operand 5 states and 79 transitions. [2024-06-14 11:18:38,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 45 transitions, 225 flow [2024-06-14 11:18:38,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 45 transitions, 216 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-14 11:18:38,032 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 123 flow [2024-06-14 11:18:38,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=123, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2024-06-14 11:18:38,033 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 7 predicate places. [2024-06-14 11:18:38,034 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 123 flow [2024-06-14 11:18:38,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:38,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:38,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:38,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 11:18:38,036 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:38,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:38,036 INFO L85 PathProgramCache]: Analyzing trace with hash -24617233, now seen corresponding path program 1 times [2024-06-14 11:18:38,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:38,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902706802] [2024-06-14 11:18:38,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:38,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:38,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:38,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:38,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:38,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902706802] [2024-06-14 11:18:38,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902706802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:38,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:38,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:18:38,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745536651] [2024-06-14 11:18:38,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:38,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:18:38,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:38,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:18:38,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:18:38,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:18:38,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 123 flow. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:38,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:38,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:18:38,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:39,057 INFO L124 PetriNetUnfolderBase]: 211/396 cut-off events. [2024-06-14 11:18:39,058 INFO L125 PetriNetUnfolderBase]: For 365/365 co-relation queries the response was YES. [2024-06-14 11:18:39,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1067 conditions, 396 events. 211/396 cut-off events. For 365/365 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1466 event pairs, 92 based on Foata normal form. 1/396 useless extension candidates. Maximal degree in co-relation 1049. Up to 368 conditions per place. [2024-06-14 11:18:39,062 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 29 selfloop transitions, 6 changer transitions 0/38 dead transitions. [2024-06-14 11:18:39,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 38 transitions, 211 flow [2024-06-14 11:18:39,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 11:18:39,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 11:18:39,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 62 transitions. [2024-06-14 11:18:39,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37575757575757573 [2024-06-14 11:18:39,064 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 123 flow. Second operand 5 states and 62 transitions. [2024-06-14 11:18:39,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 38 transitions, 211 flow [2024-06-14 11:18:39,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 38 transitions, 196 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-14 11:18:39,067 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 135 flow [2024-06-14 11:18:39,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=135, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2024-06-14 11:18:39,068 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 9 predicate places. [2024-06-14 11:18:39,068 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 135 flow [2024-06-14 11:18:39,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:39,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:39,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:39,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 11:18:39,069 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:39,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:39,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1476282712, now seen corresponding path program 1 times [2024-06-14 11:18:39,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:39,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492172124] [2024-06-14 11:18:39,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:39,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:39,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:40,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:40,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:40,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492172124] [2024-06-14 11:18:40,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492172124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:40,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:40,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:18:40,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16558002] [2024-06-14 11:18:40,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:40,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:18:40,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:40,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:18:40,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:18:41,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:18:41,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 135 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:41,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:41,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:18:41,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:41,350 INFO L124 PetriNetUnfolderBase]: 207/386 cut-off events. [2024-06-14 11:18:41,350 INFO L125 PetriNetUnfolderBase]: For 503/503 co-relation queries the response was YES. [2024-06-14 11:18:41,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1094 conditions, 386 events. 207/386 cut-off events. For 503/503 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1393 event pairs, 34 based on Foata normal form. 4/389 useless extension candidates. Maximal degree in co-relation 1074. Up to 309 conditions per place. [2024-06-14 11:18:41,354 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 37 selfloop transitions, 8 changer transitions 0/48 dead transitions. [2024-06-14 11:18:41,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 48 transitions, 255 flow [2024-06-14 11:18:41,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:18:41,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:18:41,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions. [2024-06-14 11:18:41,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-06-14 11:18:41,356 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 135 flow. Second operand 6 states and 87 transitions. [2024-06-14 11:18:41,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 48 transitions, 255 flow [2024-06-14 11:18:41,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 48 transitions, 244 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-14 11:18:41,362 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 136 flow [2024-06-14 11:18:41,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=136, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2024-06-14 11:18:41,367 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 11 predicate places. [2024-06-14 11:18:41,368 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 136 flow [2024-06-14 11:18:41,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:41,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:41,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:41,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 11:18:41,370 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:41,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:41,371 INFO L85 PathProgramCache]: Analyzing trace with hash -763132608, now seen corresponding path program 1 times [2024-06-14 11:18:41,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:41,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887715219] [2024-06-14 11:18:41,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:41,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:41,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:42,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:42,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:42,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887715219] [2024-06-14 11:18:42,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887715219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:42,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:42,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:18:42,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757530924] [2024-06-14 11:18:42,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:42,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:18:42,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:42,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:18:42,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:18:42,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:18:42,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 136 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:42,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:42,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:18:42,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:42,392 INFO L124 PetriNetUnfolderBase]: 237/422 cut-off events. [2024-06-14 11:18:42,393 INFO L125 PetriNetUnfolderBase]: For 822/822 co-relation queries the response was YES. [2024-06-14 11:18:42,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1283 conditions, 422 events. 237/422 cut-off events. For 822/822 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1485 event pairs, 103 based on Foata normal form. 1/422 useless extension candidates. Maximal degree in co-relation 1263. Up to 407 conditions per place. [2024-06-14 11:18:42,397 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 30 selfloop transitions, 8 changer transitions 0/40 dead transitions. [2024-06-14 11:18:42,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 40 transitions, 234 flow [2024-06-14 11:18:42,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:18:42,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:18:42,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 65 transitions. [2024-06-14 11:18:42,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3282828282828283 [2024-06-14 11:18:42,399 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 136 flow. Second operand 6 states and 65 transitions. [2024-06-14 11:18:42,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 40 transitions, 234 flow [2024-06-14 11:18:42,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 40 transitions, 214 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-14 11:18:42,401 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 149 flow [2024-06-14 11:18:42,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=149, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2024-06-14 11:18:42,402 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 13 predicate places. [2024-06-14 11:18:42,402 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 149 flow [2024-06-14 11:18:42,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:42,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:42,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:42,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 11:18:42,402 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:42,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:42,403 INFO L85 PathProgramCache]: Analyzing trace with hash 178152706, now seen corresponding path program 1 times [2024-06-14 11:18:42,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:42,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827375952] [2024-06-14 11:18:42,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:42,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:42,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:43,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:43,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:43,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827375952] [2024-06-14 11:18:43,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827375952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:43,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:43,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:18:43,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475995903] [2024-06-14 11:18:43,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:43,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:18:43,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:43,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:18:43,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:18:43,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:18:43,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 149 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:43,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:43,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:18:43,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:43,461 INFO L124 PetriNetUnfolderBase]: 226/416 cut-off events. [2024-06-14 11:18:43,461 INFO L125 PetriNetUnfolderBase]: For 1126/1129 co-relation queries the response was YES. [2024-06-14 11:18:43,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1317 conditions, 416 events. 226/416 cut-off events. For 1126/1129 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1502 event pairs, 81 based on Foata normal form. 4/418 useless extension candidates. Maximal degree in co-relation 1295. Up to 362 conditions per place. [2024-06-14 11:18:43,464 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 34 selfloop transitions, 10 changer transitions 0/48 dead transitions. [2024-06-14 11:18:43,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 48 transitions, 275 flow [2024-06-14 11:18:43,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:18:43,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:18:43,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 75 transitions. [2024-06-14 11:18:43,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-14 11:18:43,466 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 149 flow. Second operand 6 states and 75 transitions. [2024-06-14 11:18:43,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 48 transitions, 275 flow [2024-06-14 11:18:43,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 48 transitions, 258 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-14 11:18:43,469 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 180 flow [2024-06-14 11:18:43,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=180, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2024-06-14 11:18:43,470 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 16 predicate places. [2024-06-14 11:18:43,470 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 180 flow [2024-06-14 11:18:43,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:43,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:43,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:43,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 11:18:43,471 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:43,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:43,472 INFO L85 PathProgramCache]: Analyzing trace with hash 2112685646, now seen corresponding path program 2 times [2024-06-14 11:18:43,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:43,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082190356] [2024-06-14 11:18:43,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:43,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:43,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:44,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:44,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:44,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082190356] [2024-06-14 11:18:44,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082190356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:44,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:44,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:18:44,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804077682] [2024-06-14 11:18:44,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:44,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:18:44,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:44,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:18:44,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:18:44,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:18:44,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 180 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:44,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:44,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:18:44,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:44,494 INFO L124 PetriNetUnfolderBase]: 224/416 cut-off events. [2024-06-14 11:18:44,495 INFO L125 PetriNetUnfolderBase]: For 1507/1510 co-relation queries the response was YES. [2024-06-14 11:18:44,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1443 conditions, 416 events. 224/416 cut-off events. For 1507/1510 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1523 event pairs, 82 based on Foata normal form. 4/417 useless extension candidates. Maximal degree in co-relation 1419. Up to 348 conditions per place. [2024-06-14 11:18:44,498 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 33 selfloop transitions, 14 changer transitions 0/51 dead transitions. [2024-06-14 11:18:44,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 51 transitions, 336 flow [2024-06-14 11:18:44,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:18:44,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:18:44,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 76 transitions. [2024-06-14 11:18:44,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3838383838383838 [2024-06-14 11:18:44,500 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 180 flow. Second operand 6 states and 76 transitions. [2024-06-14 11:18:44,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 51 transitions, 336 flow [2024-06-14 11:18:44,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 51 transitions, 324 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-14 11:18:44,503 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 229 flow [2024-06-14 11:18:44,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=229, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2024-06-14 11:18:44,503 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 20 predicate places. [2024-06-14 11:18:44,504 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 229 flow [2024-06-14 11:18:44,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:44,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:44,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:44,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 11:18:44,505 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:44,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:44,505 INFO L85 PathProgramCache]: Analyzing trace with hash 2112694574, now seen corresponding path program 1 times [2024-06-14 11:18:44,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:44,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377218857] [2024-06-14 11:18:44,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:44,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:44,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:45,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:45,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:45,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377218857] [2024-06-14 11:18:45,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377218857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:45,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:45,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:18:45,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461061891] [2024-06-14 11:18:45,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:45,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:18:45,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:45,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:18:45,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:18:45,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:18:45,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 229 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:45,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:45,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:18:45,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:45,567 INFO L124 PetriNetUnfolderBase]: 242/431 cut-off events. [2024-06-14 11:18:45,567 INFO L125 PetriNetUnfolderBase]: For 1835/1835 co-relation queries the response was YES. [2024-06-14 11:18:45,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1589 conditions, 431 events. 242/431 cut-off events. For 1835/1835 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1526 event pairs, 80 based on Foata normal form. 1/431 useless extension candidates. Maximal degree in co-relation 1563. Up to 413 conditions per place. [2024-06-14 11:18:45,570 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 39 selfloop transitions, 10 changer transitions 0/51 dead transitions. [2024-06-14 11:18:45,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 51 transitions, 353 flow [2024-06-14 11:18:45,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:18:45,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:18:45,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 73 transitions. [2024-06-14 11:18:45,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31601731601731603 [2024-06-14 11:18:45,572 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 229 flow. Second operand 7 states and 73 transitions. [2024-06-14 11:18:45,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 51 transitions, 353 flow [2024-06-14 11:18:45,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 51 transitions, 338 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-14 11:18:45,580 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 253 flow [2024-06-14 11:18:45,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=253, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2024-06-14 11:18:45,582 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 25 predicate places. [2024-06-14 11:18:45,582 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 253 flow [2024-06-14 11:18:45,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:45,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:45,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:45,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 11:18:45,583 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:45,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:45,584 INFO L85 PathProgramCache]: Analyzing trace with hash 862087964, now seen corresponding path program 1 times [2024-06-14 11:18:45,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:45,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763201639] [2024-06-14 11:18:45,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:45,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:45,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:46,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:46,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:46,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763201639] [2024-06-14 11:18:46,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763201639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:46,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:46,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:18:46,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709677239] [2024-06-14 11:18:46,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:46,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:18:46,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:46,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:18:46,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:18:46,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:18:46,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 253 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:46,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:46,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:18:46,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:46,946 INFO L124 PetriNetUnfolderBase]: 223/411 cut-off events. [2024-06-14 11:18:46,946 INFO L125 PetriNetUnfolderBase]: For 2202/2202 co-relation queries the response was YES. [2024-06-14 11:18:46,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1592 conditions, 411 events. 223/411 cut-off events. For 2202/2202 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1496 event pairs, 75 based on Foata normal form. 1/411 useless extension candidates. Maximal degree in co-relation 1564. Up to 355 conditions per place. [2024-06-14 11:18:46,949 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 39 selfloop transitions, 11 changer transitions 0/54 dead transitions. [2024-06-14 11:18:46,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 54 transitions, 379 flow [2024-06-14 11:18:46,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:18:46,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:18:46,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 75 transitions. [2024-06-14 11:18:46,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-14 11:18:46,951 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 253 flow. Second operand 6 states and 75 transitions. [2024-06-14 11:18:46,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 54 transitions, 379 flow [2024-06-14 11:18:46,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 54 transitions, 354 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-14 11:18:46,955 INFO L231 Difference]: Finished difference. Result has 58 places, 44 transitions, 258 flow [2024-06-14 11:18:46,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=258, PETRI_PLACES=58, PETRI_TRANSITIONS=44} [2024-06-14 11:18:46,958 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 26 predicate places. [2024-06-14 11:18:46,958 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 44 transitions, 258 flow [2024-06-14 11:18:46,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:46,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:46,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:46,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 11:18:46,959 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:46,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:46,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1061395551, now seen corresponding path program 1 times [2024-06-14 11:18:46,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:46,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527505665] [2024-06-14 11:18:46,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:46,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:46,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:47,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:47,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:47,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527505665] [2024-06-14 11:18:47,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527505665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:47,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:47,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:18:47,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100416204] [2024-06-14 11:18:47,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:47,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:18:47,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:47,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:18:47,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:18:47,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:18:47,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 44 transitions, 258 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:47,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:47,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:18:47,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:47,994 INFO L124 PetriNetUnfolderBase]: 246/439 cut-off events. [2024-06-14 11:18:47,995 INFO L125 PetriNetUnfolderBase]: For 2643/2646 co-relation queries the response was YES. [2024-06-14 11:18:47,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1745 conditions, 439 events. 246/439 cut-off events. For 2643/2646 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1546 event pairs, 82 based on Foata normal form. 4/441 useless extension candidates. Maximal degree in co-relation 1716. Up to 397 conditions per place. [2024-06-14 11:18:47,998 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 44 selfloop transitions, 12 changer transitions 0/58 dead transitions. [2024-06-14 11:18:47,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 58 transitions, 414 flow [2024-06-14 11:18:47,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:18:47,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:18:47,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-14 11:18:47,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.341991341991342 [2024-06-14 11:18:48,000 INFO L175 Difference]: Start difference. First operand has 58 places, 44 transitions, 258 flow. Second operand 7 states and 79 transitions. [2024-06-14 11:18:48,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 58 transitions, 414 flow [2024-06-14 11:18:48,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 58 transitions, 387 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-14 11:18:48,004 INFO L231 Difference]: Finished difference. Result has 60 places, 46 transitions, 276 flow [2024-06-14 11:18:48,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=276, PETRI_PLACES=60, PETRI_TRANSITIONS=46} [2024-06-14 11:18:48,004 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 28 predicate places. [2024-06-14 11:18:48,005 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 46 transitions, 276 flow [2024-06-14 11:18:48,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:48,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:48,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:48,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 11:18:48,005 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:48,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:48,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1509660327, now seen corresponding path program 2 times [2024-06-14 11:18:48,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:48,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603051016] [2024-06-14 11:18:48,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:48,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:48,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:48,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:48,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:48,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603051016] [2024-06-14 11:18:48,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603051016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:48,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:48,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:18:48,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361302035] [2024-06-14 11:18:48,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:48,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:18:48,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:48,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:18:48,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:18:48,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:18:48,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 46 transitions, 276 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:48,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:48,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:18:48,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:49,180 INFO L124 PetriNetUnfolderBase]: 257/458 cut-off events. [2024-06-14 11:18:49,181 INFO L125 PetriNetUnfolderBase]: For 3267/3270 co-relation queries the response was YES. [2024-06-14 11:18:49,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1919 conditions, 458 events. 257/458 cut-off events. For 3267/3270 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1652 event pairs, 88 based on Foata normal form. 4/459 useless extension candidates. Maximal degree in co-relation 1889. Up to 379 conditions per place. [2024-06-14 11:18:49,184 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 41 selfloop transitions, 21 changer transitions 0/64 dead transitions. [2024-06-14 11:18:49,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 64 transitions, 524 flow [2024-06-14 11:18:49,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:18:49,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:18:49,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-14 11:18:49,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3593073593073593 [2024-06-14 11:18:49,186 INFO L175 Difference]: Start difference. First operand has 60 places, 46 transitions, 276 flow. Second operand 7 states and 83 transitions. [2024-06-14 11:18:49,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 64 transitions, 524 flow [2024-06-14 11:18:49,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 64 transitions, 495 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-14 11:18:49,191 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 346 flow [2024-06-14 11:18:49,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=346, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2024-06-14 11:18:49,193 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 30 predicate places. [2024-06-14 11:18:49,193 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 346 flow [2024-06-14 11:18:49,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:49,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:49,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:49,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 11:18:49,198 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:49,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:49,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1069014111, now seen corresponding path program 3 times [2024-06-14 11:18:49,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:49,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664012585] [2024-06-14 11:18:49,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:49,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:49,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:50,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:50,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:50,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664012585] [2024-06-14 11:18:50,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664012585] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:50,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:50,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:18:50,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150222819] [2024-06-14 11:18:50,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:50,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:18:50,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:50,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:18:50,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:18:50,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:18:50,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 346 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:50,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:50,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:18:50,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:50,310 INFO L124 PetriNetUnfolderBase]: 253/452 cut-off events. [2024-06-14 11:18:50,310 INFO L125 PetriNetUnfolderBase]: For 3758/3761 co-relation queries the response was YES. [2024-06-14 11:18:50,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1965 conditions, 452 events. 253/452 cut-off events. For 3758/3761 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1637 event pairs, 85 based on Foata normal form. 4/453 useless extension candidates. Maximal degree in co-relation 1934. Up to 376 conditions per place. [2024-06-14 11:18:50,314 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 38 selfloop transitions, 23 changer transitions 0/63 dead transitions. [2024-06-14 11:18:50,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 63 transitions, 522 flow [2024-06-14 11:18:50,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:18:50,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:18:50,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-14 11:18:50,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35064935064935066 [2024-06-14 11:18:50,316 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 346 flow. Second operand 7 states and 81 transitions. [2024-06-14 11:18:50,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 63 transitions, 522 flow [2024-06-14 11:18:50,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 63 transitions, 493 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-14 11:18:50,325 INFO L231 Difference]: Finished difference. Result has 67 places, 52 transitions, 368 flow [2024-06-14 11:18:50,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=368, PETRI_PLACES=67, PETRI_TRANSITIONS=52} [2024-06-14 11:18:50,326 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 35 predicate places. [2024-06-14 11:18:50,327 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 52 transitions, 368 flow [2024-06-14 11:18:50,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:50,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:50,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:50,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 11:18:50,327 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:50,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:50,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1069024031, now seen corresponding path program 1 times [2024-06-14 11:18:50,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:50,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289607334] [2024-06-14 11:18:50,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:50,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:50,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:51,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:51,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:51,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289607334] [2024-06-14 11:18:51,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289607334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:51,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:51,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:18:51,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654729323] [2024-06-14 11:18:51,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:51,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:18:51,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:51,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:18:51,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:18:51,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:18:51,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 52 transitions, 368 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:51,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:51,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:18:51,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:51,709 INFO L124 PetriNetUnfolderBase]: 251/447 cut-off events. [2024-06-14 11:18:51,710 INFO L125 PetriNetUnfolderBase]: For 4115/4115 co-relation queries the response was YES. [2024-06-14 11:18:51,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2018 conditions, 447 events. 251/447 cut-off events. For 4115/4115 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1609 event pairs, 81 based on Foata normal form. 1/447 useless extension candidates. Maximal degree in co-relation 1985. Up to 426 conditions per place. [2024-06-14 11:18:51,714 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 48 selfloop transitions, 12 changer transitions 0/62 dead transitions. [2024-06-14 11:18:51,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 62 transitions, 518 flow [2024-06-14 11:18:51,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:18:51,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:18:51,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-14 11:18:51,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3068181818181818 [2024-06-14 11:18:51,715 INFO L175 Difference]: Start difference. First operand has 67 places, 52 transitions, 368 flow. Second operand 8 states and 81 transitions. [2024-06-14 11:18:51,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 62 transitions, 518 flow [2024-06-14 11:18:51,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 62 transitions, 477 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-14 11:18:51,721 INFO L231 Difference]: Finished difference. Result has 70 places, 54 transitions, 372 flow [2024-06-14 11:18:51,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=372, PETRI_PLACES=70, PETRI_TRANSITIONS=54} [2024-06-14 11:18:51,723 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 38 predicate places. [2024-06-14 11:18:51,723 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 54 transitions, 372 flow [2024-06-14 11:18:51,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:51,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:51,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:51,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 11:18:51,724 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:51,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:51,724 INFO L85 PathProgramCache]: Analyzing trace with hash -598658207, now seen corresponding path program 1 times [2024-06-14 11:18:51,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:51,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469307205] [2024-06-14 11:18:51,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:51,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:51,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:53,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:53,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:53,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469307205] [2024-06-14 11:18:53,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469307205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:53,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:53,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:18:53,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165553771] [2024-06-14 11:18:53,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:53,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:18:53,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:53,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:18:53,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:18:53,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:18:53,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 54 transitions, 372 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:53,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:53,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:18:53,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:53,564 INFO L124 PetriNetUnfolderBase]: 243/443 cut-off events. [2024-06-14 11:18:53,565 INFO L125 PetriNetUnfolderBase]: For 4892/4894 co-relation queries the response was YES. [2024-06-14 11:18:53,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2058 conditions, 443 events. 243/443 cut-off events. For 4892/4894 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1652 event pairs, 57 based on Foata normal form. 2/441 useless extension candidates. Maximal degree in co-relation 2024. Up to 365 conditions per place. [2024-06-14 11:18:53,568 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 52 selfloop transitions, 11 changer transitions 0/71 dead transitions. [2024-06-14 11:18:53,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 71 transitions, 546 flow [2024-06-14 11:18:53,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:18:53,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:18:53,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-14 11:18:53,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-06-14 11:18:53,570 INFO L175 Difference]: Start difference. First operand has 70 places, 54 transitions, 372 flow. Second operand 7 states and 88 transitions. [2024-06-14 11:18:53,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 71 transitions, 546 flow [2024-06-14 11:18:53,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 71 transitions, 517 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-14 11:18:53,577 INFO L231 Difference]: Finished difference. Result has 71 places, 56 transitions, 386 flow [2024-06-14 11:18:53,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=386, PETRI_PLACES=71, PETRI_TRANSITIONS=56} [2024-06-14 11:18:53,578 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 39 predicate places. [2024-06-14 11:18:53,579 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 56 transitions, 386 flow [2024-06-14 11:18:53,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:53,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:53,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:53,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 11:18:53,579 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:53,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:53,580 INFO L85 PathProgramCache]: Analyzing trace with hash -598538237, now seen corresponding path program 2 times [2024-06-14 11:18:53,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:53,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143437794] [2024-06-14 11:18:53,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:53,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:53,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:55,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:55,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:55,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143437794] [2024-06-14 11:18:55,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143437794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:55,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:55,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:18:55,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221969467] [2024-06-14 11:18:55,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:55,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:18:55,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:55,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:18:55,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:18:55,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:18:55,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 56 transitions, 386 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:55,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:55,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:18:55,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:55,480 INFO L124 PetriNetUnfolderBase]: 246/450 cut-off events. [2024-06-14 11:18:55,480 INFO L125 PetriNetUnfolderBase]: For 5446/5446 co-relation queries the response was YES. [2024-06-14 11:18:55,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2150 conditions, 450 events. 246/450 cut-off events. For 5446/5446 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1685 event pairs, 55 based on Foata normal form. 2/451 useless extension candidates. Maximal degree in co-relation 2115. Up to 353 conditions per place. [2024-06-14 11:18:55,484 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 48 selfloop transitions, 16 changer transitions 0/72 dead transitions. [2024-06-14 11:18:55,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 72 transitions, 564 flow [2024-06-14 11:18:55,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:18:55,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:18:55,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-14 11:18:55,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3852813852813853 [2024-06-14 11:18:55,486 INFO L175 Difference]: Start difference. First operand has 71 places, 56 transitions, 386 flow. Second operand 7 states and 89 transitions. [2024-06-14 11:18:55,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 72 transitions, 564 flow [2024-06-14 11:18:55,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 72 transitions, 537 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-14 11:18:55,497 INFO L231 Difference]: Finished difference. Result has 73 places, 58 transitions, 417 flow [2024-06-14 11:18:55,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=417, PETRI_PLACES=73, PETRI_TRANSITIONS=58} [2024-06-14 11:18:55,497 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 41 predicate places. [2024-06-14 11:18:55,498 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 58 transitions, 417 flow [2024-06-14 11:18:55,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:55,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:55,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:55,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 11:18:55,498 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:55,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:55,499 INFO L85 PathProgramCache]: Analyzing trace with hash -594069401, now seen corresponding path program 1 times [2024-06-14 11:18:55,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:55,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739712473] [2024-06-14 11:18:55,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:55,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:55,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:56,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:56,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:56,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739712473] [2024-06-14 11:18:56,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739712473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:56,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:56,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:18:56,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630124812] [2024-06-14 11:18:56,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:56,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:18:56,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:56,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:18:56,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:18:56,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:18:56,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 58 transitions, 417 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:56,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:56,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:18:56,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:56,939 INFO L124 PetriNetUnfolderBase]: 261/464 cut-off events. [2024-06-14 11:18:56,939 INFO L125 PetriNetUnfolderBase]: For 5896/5896 co-relation queries the response was YES. [2024-06-14 11:18:56,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2275 conditions, 464 events. 261/464 cut-off events. For 5896/5896 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1697 event pairs, 76 based on Foata normal form. 1/464 useless extension candidates. Maximal degree in co-relation 2239. Up to 417 conditions per place. [2024-06-14 11:18:56,944 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 53 selfloop transitions, 15 changer transitions 0/70 dead transitions. [2024-06-14 11:18:56,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 70 transitions, 585 flow [2024-06-14 11:18:56,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:18:56,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:18:56,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-14 11:18:56,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.341991341991342 [2024-06-14 11:18:56,945 INFO L175 Difference]: Start difference. First operand has 73 places, 58 transitions, 417 flow. Second operand 7 states and 79 transitions. [2024-06-14 11:18:56,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 70 transitions, 585 flow [2024-06-14 11:18:56,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 70 transitions, 541 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-14 11:18:56,953 INFO L231 Difference]: Finished difference. Result has 75 places, 58 transitions, 411 flow [2024-06-14 11:18:56,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=411, PETRI_PLACES=75, PETRI_TRANSITIONS=58} [2024-06-14 11:18:56,953 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 43 predicate places. [2024-06-14 11:18:56,954 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 58 transitions, 411 flow [2024-06-14 11:18:56,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:56,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:56,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:56,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 11:18:56,954 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:56,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:56,955 INFO L85 PathProgramCache]: Analyzing trace with hash -593889663, now seen corresponding path program 1 times [2024-06-14 11:18:56,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:56,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537630104] [2024-06-14 11:18:56,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:56,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:56,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:57,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:57,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:57,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537630104] [2024-06-14 11:18:57,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537630104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:57,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:57,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:18:57,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405964138] [2024-06-14 11:18:57,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:57,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:18:57,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:57,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:18:57,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:18:57,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:18:57,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 58 transitions, 411 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:57,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:57,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:18:57,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:58,180 INFO L124 PetriNetUnfolderBase]: 267/475 cut-off events. [2024-06-14 11:18:58,181 INFO L125 PetriNetUnfolderBase]: For 6648/6651 co-relation queries the response was YES. [2024-06-14 11:18:58,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2338 conditions, 475 events. 267/475 cut-off events. For 6648/6651 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1717 event pairs, 79 based on Foata normal form. 4/477 useless extension candidates. Maximal degree in co-relation 2301. Up to 425 conditions per place. [2024-06-14 11:18:58,185 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 58 selfloop transitions, 14 changer transitions 0/74 dead transitions. [2024-06-14 11:18:58,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 74 transitions, 609 flow [2024-06-14 11:18:58,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:18:58,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:18:58,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-14 11:18:58,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 11:18:58,187 INFO L175 Difference]: Start difference. First operand has 75 places, 58 transitions, 411 flow. Second operand 8 states and 88 transitions. [2024-06-14 11:18:58,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 74 transitions, 609 flow [2024-06-14 11:18:58,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 74 transitions, 559 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-14 11:18:58,196 INFO L231 Difference]: Finished difference. Result has 76 places, 60 transitions, 414 flow [2024-06-14 11:18:58,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=414, PETRI_PLACES=76, PETRI_TRANSITIONS=60} [2024-06-14 11:18:58,197 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 44 predicate places. [2024-06-14 11:18:58,197 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 60 transitions, 414 flow [2024-06-14 11:18:58,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:58,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:58,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:58,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 11:18:58,200 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:58,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:58,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1220002611, now seen corresponding path program 2 times [2024-06-14 11:18:58,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:58,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567158572] [2024-06-14 11:18:58,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:58,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:58,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:58,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:58,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:58,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567158572] [2024-06-14 11:18:58,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567158572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:58,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:58,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:18:58,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808868109] [2024-06-14 11:18:58,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:58,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:18:58,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:58,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:18:58,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:18:59,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:18:59,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 60 transitions, 414 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:59,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:59,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:18:59,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:59,350 INFO L124 PetriNetUnfolderBase]: 273/486 cut-off events. [2024-06-14 11:18:59,351 INFO L125 PetriNetUnfolderBase]: For 7456/7459 co-relation queries the response was YES. [2024-06-14 11:18:59,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2451 conditions, 486 events. 273/486 cut-off events. For 7456/7459 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1780 event pairs, 80 based on Foata normal form. 4/487 useless extension candidates. Maximal degree in co-relation 2413. Up to 377 conditions per place. [2024-06-14 11:18:59,355 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 45 selfloop transitions, 30 changer transitions 0/77 dead transitions. [2024-06-14 11:18:59,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 77 transitions, 676 flow [2024-06-14 11:18:59,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:18:59,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:18:59,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-14 11:18:59,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3446969696969697 [2024-06-14 11:18:59,356 INFO L175 Difference]: Start difference. First operand has 76 places, 60 transitions, 414 flow. Second operand 8 states and 91 transitions. [2024-06-14 11:18:59,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 77 transitions, 676 flow [2024-06-14 11:18:59,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 77 transitions, 639 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-14 11:18:59,366 INFO L231 Difference]: Finished difference. Result has 78 places, 64 transitions, 486 flow [2024-06-14 11:18:59,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=486, PETRI_PLACES=78, PETRI_TRANSITIONS=64} [2024-06-14 11:18:59,367 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 46 predicate places. [2024-06-14 11:18:59,367 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 64 transitions, 486 flow [2024-06-14 11:18:59,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:59,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:59,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:59,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 11:18:59,368 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:59,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:59,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1228580435, now seen corresponding path program 3 times [2024-06-14 11:18:59,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:59,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225316573] [2024-06-14 11:18:59,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:59,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:59,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:00,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:00,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:00,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225316573] [2024-06-14 11:19:00,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225316573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:00,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:00,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:19:00,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865802356] [2024-06-14 11:19:00,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:00,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:19:00,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:00,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:19:00,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:19:00,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:19:00,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 64 transitions, 486 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:00,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:00,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:19:00,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:00,866 INFO L124 PetriNetUnfolderBase]: 247/458 cut-off events. [2024-06-14 11:19:00,866 INFO L125 PetriNetUnfolderBase]: For 8121/8124 co-relation queries the response was YES. [2024-06-14 11:19:00,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2403 conditions, 458 events. 247/458 cut-off events. For 8121/8124 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1750 event pairs, 65 based on Foata normal form. 2/457 useless extension candidates. Maximal degree in co-relation 2364. Up to 345 conditions per place. [2024-06-14 11:19:00,872 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 51 selfloop transitions, 19 changer transitions 0/78 dead transitions. [2024-06-14 11:19:00,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 78 transitions, 676 flow [2024-06-14 11:19:00,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:19:00,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:19:00,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-14 11:19:00,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3852813852813853 [2024-06-14 11:19:00,876 INFO L175 Difference]: Start difference. First operand has 78 places, 64 transitions, 486 flow. Second operand 7 states and 89 transitions. [2024-06-14 11:19:00,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 78 transitions, 676 flow [2024-06-14 11:19:00,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 78 transitions, 626 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-14 11:19:00,886 INFO L231 Difference]: Finished difference. Result has 81 places, 66 transitions, 503 flow [2024-06-14 11:19:00,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=503, PETRI_PLACES=81, PETRI_TRANSITIONS=66} [2024-06-14 11:19:00,886 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 49 predicate places. [2024-06-14 11:19:00,887 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 66 transitions, 503 flow [2024-06-14 11:19:00,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:00,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:00,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:00,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 11:19:00,888 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:00,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:00,888 INFO L85 PathProgramCache]: Analyzing trace with hash -421399773, now seen corresponding path program 3 times [2024-06-14 11:19:00,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:00,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060644291] [2024-06-14 11:19:00,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:00,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:00,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:01,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:01,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:01,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060644291] [2024-06-14 11:19:01,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060644291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:01,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:01,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:19:01,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877706344] [2024-06-14 11:19:01,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:01,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:19:01,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:01,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:19:01,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:19:01,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:01,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 66 transitions, 503 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:01,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:01,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:01,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:01,912 INFO L124 PetriNetUnfolderBase]: 280/498 cut-off events. [2024-06-14 11:19:01,912 INFO L125 PetriNetUnfolderBase]: For 8976/8979 co-relation queries the response was YES. [2024-06-14 11:19:01,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2669 conditions, 498 events. 280/498 cut-off events. For 8976/8979 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1841 event pairs, 86 based on Foata normal form. 4/499 useless extension candidates. Maximal degree in co-relation 2628. Up to 383 conditions per place. [2024-06-14 11:19:01,918 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 53 selfloop transitions, 29 changer transitions 0/84 dead transitions. [2024-06-14 11:19:01,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 84 transitions, 825 flow [2024-06-14 11:19:01,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:19:01,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:19:01,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-14 11:19:01,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3560606060606061 [2024-06-14 11:19:01,920 INFO L175 Difference]: Start difference. First operand has 81 places, 66 transitions, 503 flow. Second operand 8 states and 94 transitions. [2024-06-14 11:19:01,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 84 transitions, 825 flow [2024-06-14 11:19:01,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 84 transitions, 774 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-14 11:19:01,929 INFO L231 Difference]: Finished difference. Result has 84 places, 70 transitions, 555 flow [2024-06-14 11:19:01,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=555, PETRI_PLACES=84, PETRI_TRANSITIONS=70} [2024-06-14 11:19:01,930 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 52 predicate places. [2024-06-14 11:19:01,930 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 70 transitions, 555 flow [2024-06-14 11:19:01,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:01,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:01,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:01,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 11:19:01,931 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:01,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:01,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1220299281, now seen corresponding path program 4 times [2024-06-14 11:19:01,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:01,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954128345] [2024-06-14 11:19:01,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:01,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:01,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:02,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:02,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:02,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954128345] [2024-06-14 11:19:02,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954128345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:02,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:02,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:19:02,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566740264] [2024-06-14 11:19:02,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:02,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:19:02,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:02,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:19:02,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:19:02,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:02,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 70 transitions, 555 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:02,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:02,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:02,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:03,097 INFO L124 PetriNetUnfolderBase]: 276/492 cut-off events. [2024-06-14 11:19:03,097 INFO L125 PetriNetUnfolderBase]: For 9357/9360 co-relation queries the response was YES. [2024-06-14 11:19:03,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2648 conditions, 492 events. 276/492 cut-off events. For 9357/9360 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1824 event pairs, 79 based on Foata normal form. 4/493 useless extension candidates. Maximal degree in co-relation 2606. Up to 380 conditions per place. [2024-06-14 11:19:03,102 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 50 selfloop transitions, 31 changer transitions 0/83 dead transitions. [2024-06-14 11:19:03,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 83 transitions, 795 flow [2024-06-14 11:19:03,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:19:03,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:19:03,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-14 11:19:03,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-14 11:19:03,104 INFO L175 Difference]: Start difference. First operand has 84 places, 70 transitions, 555 flow. Second operand 8 states and 92 transitions. [2024-06-14 11:19:03,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 83 transitions, 795 flow [2024-06-14 11:19:03,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 83 transitions, 741 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-14 11:19:03,115 INFO L231 Difference]: Finished difference. Result has 88 places, 70 transitions, 568 flow [2024-06-14 11:19:03,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=568, PETRI_PLACES=88, PETRI_TRANSITIONS=70} [2024-06-14 11:19:03,116 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 56 predicate places. [2024-06-14 11:19:03,116 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 70 transitions, 568 flow [2024-06-14 11:19:03,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:03,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:03,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:03,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 11:19:03,117 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:03,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:03,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1219991699, now seen corresponding path program 1 times [2024-06-14 11:19:03,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:03,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685860307] [2024-06-14 11:19:03,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:03,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:03,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:04,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:04,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:04,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685860307] [2024-06-14 11:19:04,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685860307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:04,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:04,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:04,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433271193] [2024-06-14 11:19:04,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:04,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:04,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:04,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:04,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:04,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:04,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 70 transitions, 568 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:04,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:04,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:04,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:04,913 INFO L124 PetriNetUnfolderBase]: 274/487 cut-off events. [2024-06-14 11:19:04,913 INFO L125 PetriNetUnfolderBase]: For 9754/9754 co-relation queries the response was YES. [2024-06-14 11:19:04,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2648 conditions, 487 events. 274/487 cut-off events. For 9754/9754 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1807 event pairs, 81 based on Foata normal form. 1/487 useless extension candidates. Maximal degree in co-relation 2605. Up to 463 conditions per place. [2024-06-14 11:19:04,916 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 65 selfloop transitions, 14 changer transitions 0/81 dead transitions. [2024-06-14 11:19:04,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 81 transitions, 760 flow [2024-06-14 11:19:04,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:04,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:04,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-06-14 11:19:04,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2996632996632997 [2024-06-14 11:19:04,918 INFO L175 Difference]: Start difference. First operand has 88 places, 70 transitions, 568 flow. Second operand 9 states and 89 transitions. [2024-06-14 11:19:04,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 81 transitions, 760 flow [2024-06-14 11:19:04,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 81 transitions, 707 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-14 11:19:04,930 INFO L231 Difference]: Finished difference. Result has 91 places, 72 transitions, 566 flow [2024-06-14 11:19:04,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=566, PETRI_PLACES=91, PETRI_TRANSITIONS=72} [2024-06-14 11:19:04,931 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 59 predicate places. [2024-06-14 11:19:04,931 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 72 transitions, 566 flow [2024-06-14 11:19:04,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:04,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:04,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:04,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 11:19:04,932 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:04,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:04,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1378533618, now seen corresponding path program 1 times [2024-06-14 11:19:04,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:04,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124647961] [2024-06-14 11:19:04,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:04,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:04,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:06,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:06,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:06,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124647961] [2024-06-14 11:19:06,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124647961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:06,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:06,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:06,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285733212] [2024-06-14 11:19:06,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:06,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:06,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:06,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:06,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:06,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:06,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 72 transitions, 566 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:06,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:06,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:06,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:06,430 INFO L124 PetriNetUnfolderBase]: 280/497 cut-off events. [2024-06-14 11:19:06,430 INFO L125 PetriNetUnfolderBase]: For 10594/10594 co-relation queries the response was YES. [2024-06-14 11:19:06,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2714 conditions, 497 events. 280/497 cut-off events. For 10594/10594 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1832 event pairs, 60 based on Foata normal form. 2/498 useless extension candidates. Maximal degree in co-relation 2670. Up to 436 conditions per place. [2024-06-14 11:19:06,433 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 76 selfloop transitions, 13 changer transitions 0/91 dead transitions. [2024-06-14 11:19:06,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 91 transitions, 802 flow [2024-06-14 11:19:06,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:19:06,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:19:06,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-14 11:19:06,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3446969696969697 [2024-06-14 11:19:06,435 INFO L175 Difference]: Start difference. First operand has 91 places, 72 transitions, 566 flow. Second operand 8 states and 91 transitions. [2024-06-14 11:19:06,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 91 transitions, 802 flow [2024-06-14 11:19:06,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 91 transitions, 767 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-14 11:19:06,446 INFO L231 Difference]: Finished difference. Result has 92 places, 74 transitions, 584 flow [2024-06-14 11:19:06,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=584, PETRI_PLACES=92, PETRI_TRANSITIONS=74} [2024-06-14 11:19:06,447 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 60 predicate places. [2024-06-14 11:19:06,447 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 74 transitions, 584 flow [2024-06-14 11:19:06,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:06,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:06,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:06,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-14 11:19:06,447 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:06,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:06,448 INFO L85 PathProgramCache]: Analyzing trace with hash -600631380, now seen corresponding path program 2 times [2024-06-14 11:19:06,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:06,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079771071] [2024-06-14 11:19:06,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:06,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:06,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:07,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:07,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:07,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079771071] [2024-06-14 11:19:07,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079771071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:07,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:07,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:07,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717145943] [2024-06-14 11:19:07,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:07,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:07,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:07,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:07,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:07,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:07,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 74 transitions, 584 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:07,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:07,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:07,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:07,772 INFO L124 PetriNetUnfolderBase]: 296/523 cut-off events. [2024-06-14 11:19:07,773 INFO L125 PetriNetUnfolderBase]: For 12160/12160 co-relation queries the response was YES. [2024-06-14 11:19:07,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2955 conditions, 523 events. 296/523 cut-off events. For 12160/12160 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1962 event pairs, 56 based on Foata normal form. 2/524 useless extension candidates. Maximal degree in co-relation 2910. Up to 415 conditions per place. [2024-06-14 11:19:07,778 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 70 selfloop transitions, 24 changer transitions 0/96 dead transitions. [2024-06-14 11:19:07,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 96 transitions, 908 flow [2024-06-14 11:19:07,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:19:07,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:19:07,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-14 11:19:07,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35984848484848486 [2024-06-14 11:19:07,786 INFO L175 Difference]: Start difference. First operand has 92 places, 74 transitions, 584 flow. Second operand 8 states and 95 transitions. [2024-06-14 11:19:07,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 96 transitions, 908 flow [2024-06-14 11:19:07,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 96 transitions, 871 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-14 11:19:07,802 INFO L231 Difference]: Finished difference. Result has 94 places, 78 transitions, 649 flow [2024-06-14 11:19:07,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=649, PETRI_PLACES=94, PETRI_TRANSITIONS=78} [2024-06-14 11:19:07,803 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 62 predicate places. [2024-06-14 11:19:07,803 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 78 transitions, 649 flow [2024-06-14 11:19:07,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:07,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:07,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:07,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-14 11:19:07,804 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:07,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:07,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1374808751, now seen corresponding path program 1 times [2024-06-14 11:19:07,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:07,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602089587] [2024-06-14 11:19:07,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:07,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:07,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:08,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:08,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:08,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602089587] [2024-06-14 11:19:08,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602089587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:08,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:08,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:08,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191126539] [2024-06-14 11:19:08,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:08,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:08,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:08,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:08,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:09,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:09,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 78 transitions, 649 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:09,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:09,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:09,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:09,314 INFO L124 PetriNetUnfolderBase]: 294/520 cut-off events. [2024-06-14 11:19:09,315 INFO L125 PetriNetUnfolderBase]: For 12750/12750 co-relation queries the response was YES. [2024-06-14 11:19:09,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3008 conditions, 520 events. 294/520 cut-off events. For 12750/12750 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1945 event pairs, 77 based on Foata normal form. 1/520 useless extension candidates. Maximal degree in co-relation 2962. Up to 462 conditions per place. [2024-06-14 11:19:09,323 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 71 selfloop transitions, 19 changer transitions 0/92 dead transitions. [2024-06-14 11:19:09,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 92 transitions, 867 flow [2024-06-14 11:19:09,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:19:09,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:19:09,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-14 11:19:09,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 11:19:09,324 INFO L175 Difference]: Start difference. First operand has 94 places, 78 transitions, 649 flow. Second operand 8 states and 88 transitions. [2024-06-14 11:19:09,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 92 transitions, 867 flow [2024-06-14 11:19:09,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 92 transitions, 824 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-14 11:19:09,336 INFO L231 Difference]: Finished difference. Result has 98 places, 78 transitions, 652 flow [2024-06-14 11:19:09,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=652, PETRI_PLACES=98, PETRI_TRANSITIONS=78} [2024-06-14 11:19:09,337 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 66 predicate places. [2024-06-14 11:19:09,337 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 78 transitions, 652 flow [2024-06-14 11:19:09,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:09,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:09,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:09,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-14 11:19:09,338 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:09,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:09,338 INFO L85 PathProgramCache]: Analyzing trace with hash -462108810, now seen corresponding path program 3 times [2024-06-14 11:19:09,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:09,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493066898] [2024-06-14 11:19:09,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:09,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:09,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:10,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:10,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:10,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493066898] [2024-06-14 11:19:10,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493066898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:10,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:10,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:10,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699624801] [2024-06-14 11:19:10,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:10,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:10,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:10,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:10,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:10,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:10,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 78 transitions, 652 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:10,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:10,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:10,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:10,910 INFO L124 PetriNetUnfolderBase]: 290/514 cut-off events. [2024-06-14 11:19:10,910 INFO L125 PetriNetUnfolderBase]: For 13349/13349 co-relation queries the response was YES. [2024-06-14 11:19:10,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2979 conditions, 514 events. 290/514 cut-off events. For 13349/13349 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1919 event pairs, 57 based on Foata normal form. 2/515 useless extension candidates. Maximal degree in co-relation 2931. Up to 409 conditions per place. [2024-06-14 11:19:10,915 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 69 selfloop transitions, 23 changer transitions 0/94 dead transitions. [2024-06-14 11:19:10,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 94 transitions, 874 flow [2024-06-14 11:19:10,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:19:10,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:19:10,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-14 11:19:10,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3560606060606061 [2024-06-14 11:19:10,917 INFO L175 Difference]: Start difference. First operand has 98 places, 78 transitions, 652 flow. Second operand 8 states and 94 transitions. [2024-06-14 11:19:10,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 94 transitions, 874 flow [2024-06-14 11:19:10,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 94 transitions, 784 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-14 11:19:10,933 INFO L231 Difference]: Finished difference. Result has 97 places, 78 transitions, 613 flow [2024-06-14 11:19:10,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=613, PETRI_PLACES=97, PETRI_TRANSITIONS=78} [2024-06-14 11:19:10,934 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 65 predicate places. [2024-06-14 11:19:10,934 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 78 transitions, 613 flow [2024-06-14 11:19:10,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:10,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:10,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:10,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-14 11:19:10,935 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:10,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:10,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1230708692, now seen corresponding path program 1 times [2024-06-14 11:19:10,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:10,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538864425] [2024-06-14 11:19:10,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:10,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:10,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:11,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:11,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:11,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538864425] [2024-06-14 11:19:11,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538864425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:11,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:11,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:11,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051821877] [2024-06-14 11:19:11,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:11,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:11,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:11,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:11,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:12,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:12,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 78 transitions, 613 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:12,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:12,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:12,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:12,321 INFO L124 PetriNetUnfolderBase]: 296/525 cut-off events. [2024-06-14 11:19:12,321 INFO L125 PetriNetUnfolderBase]: For 14170/14173 co-relation queries the response was YES. [2024-06-14 11:19:12,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3035 conditions, 525 events. 296/525 cut-off events. For 14170/14173 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1969 event pairs, 79 based on Foata normal form. 4/527 useless extension candidates. Maximal degree in co-relation 2986. Up to 467 conditions per place. [2024-06-14 11:19:12,325 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 78 selfloop transitions, 16 changer transitions 0/96 dead transitions. [2024-06-14 11:19:12,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 96 transitions, 865 flow [2024-06-14 11:19:12,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:12,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:12,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-14 11:19:12,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3265993265993266 [2024-06-14 11:19:12,327 INFO L175 Difference]: Start difference. First operand has 97 places, 78 transitions, 613 flow. Second operand 9 states and 97 transitions. [2024-06-14 11:19:12,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 96 transitions, 865 flow [2024-06-14 11:19:12,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 96 transitions, 802 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-14 11:19:12,344 INFO L231 Difference]: Finished difference. Result has 99 places, 80 transitions, 611 flow [2024-06-14 11:19:12,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=611, PETRI_PLACES=99, PETRI_TRANSITIONS=80} [2024-06-14 11:19:12,344 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 67 predicate places. [2024-06-14 11:19:12,345 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 80 transitions, 611 flow [2024-06-14 11:19:12,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:12,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:12,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:12,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-14 11:19:12,345 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:12,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:12,346 INFO L85 PathProgramCache]: Analyzing trace with hash 568719374, now seen corresponding path program 4 times [2024-06-14 11:19:12,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:12,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780945570] [2024-06-14 11:19:12,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:12,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:12,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:13,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:13,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:13,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780945570] [2024-06-14 11:19:13,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780945570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:13,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:13,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:13,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904490933] [2024-06-14 11:19:13,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:13,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:13,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:13,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:13,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:13,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:13,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 80 transitions, 611 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:13,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:13,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:13,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:13,889 INFO L124 PetriNetUnfolderBase]: 312/552 cut-off events. [2024-06-14 11:19:13,889 INFO L125 PetriNetUnfolderBase]: For 16091/16094 co-relation queries the response was YES. [2024-06-14 11:19:13,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3258 conditions, 552 events. 312/552 cut-off events. For 16091/16094 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2104 event pairs, 68 based on Foata normal form. 2/551 useless extension candidates. Maximal degree in co-relation 3208. Up to 387 conditions per place. [2024-06-14 11:19:13,893 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 70 selfloop transitions, 32 changer transitions 0/104 dead transitions. [2024-06-14 11:19:13,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 104 transitions, 1049 flow [2024-06-14 11:19:13,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:19:13,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:19:13,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-14 11:19:13,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-14 11:19:13,894 INFO L175 Difference]: Start difference. First operand has 99 places, 80 transitions, 611 flow. Second operand 8 states and 100 transitions. [2024-06-14 11:19:13,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 104 transitions, 1049 flow [2024-06-14 11:19:13,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 104 transitions, 1004 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-14 11:19:13,907 INFO L231 Difference]: Finished difference. Result has 100 places, 86 transitions, 717 flow [2024-06-14 11:19:13,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=717, PETRI_PLACES=100, PETRI_TRANSITIONS=86} [2024-06-14 11:19:13,907 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 68 predicate places. [2024-06-14 11:19:13,907 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 86 transitions, 717 flow [2024-06-14 11:19:13,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:13,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:13,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:13,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-14 11:19:13,908 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:13,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:13,909 INFO L85 PathProgramCache]: Analyzing trace with hash 568713794, now seen corresponding path program 5 times [2024-06-14 11:19:13,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:13,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896655550] [2024-06-14 11:19:13,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:13,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:15,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:15,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:15,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896655550] [2024-06-14 11:19:15,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896655550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:15,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:15,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:15,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678300484] [2024-06-14 11:19:15,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:15,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:15,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:15,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:15,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:15,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:15,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 86 transitions, 717 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:15,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:15,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:15,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:15,574 INFO L124 PetriNetUnfolderBase]: 308/546 cut-off events. [2024-06-14 11:19:15,574 INFO L125 PetriNetUnfolderBase]: For 16502/16505 co-relation queries the response was YES. [2024-06-14 11:19:15,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3269 conditions, 546 events. 308/546 cut-off events. For 16502/16505 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2078 event pairs, 70 based on Foata normal form. 2/545 useless extension candidates. Maximal degree in co-relation 3218. Up to 384 conditions per place. [2024-06-14 11:19:15,578 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 66 selfloop transitions, 33 changer transitions 0/101 dead transitions. [2024-06-14 11:19:15,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 101 transitions, 1009 flow [2024-06-14 11:19:15,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:19:15,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:19:15,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-14 11:19:15,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-14 11:19:15,580 INFO L175 Difference]: Start difference. First operand has 100 places, 86 transitions, 717 flow. Second operand 8 states and 96 transitions. [2024-06-14 11:19:15,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 101 transitions, 1009 flow [2024-06-14 11:19:15,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 101 transitions, 921 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-14 11:19:15,601 INFO L231 Difference]: Finished difference. Result has 104 places, 86 transitions, 700 flow [2024-06-14 11:19:15,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=700, PETRI_PLACES=104, PETRI_TRANSITIONS=86} [2024-06-14 11:19:15,602 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 72 predicate places. [2024-06-14 11:19:15,602 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 86 transitions, 700 flow [2024-06-14 11:19:15,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:15,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:15,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:15,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-14 11:19:15,602 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:15,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:15,603 INFO L85 PathProgramCache]: Analyzing trace with hash 568929120, now seen corresponding path program 2 times [2024-06-14 11:19:15,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:15,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101266512] [2024-06-14 11:19:15,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:15,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:15,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:16,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:16,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:16,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101266512] [2024-06-14 11:19:16,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101266512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:16,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:16,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:16,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293692856] [2024-06-14 11:19:16,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:16,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:16,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:16,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:16,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:16,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:16,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 86 transitions, 700 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:16,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:16,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:16,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:17,039 INFO L124 PetriNetUnfolderBase]: 334/588 cut-off events. [2024-06-14 11:19:17,039 INFO L125 PetriNetUnfolderBase]: For 19465/19468 co-relation queries the response was YES. [2024-06-14 11:19:17,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3569 conditions, 588 events. 334/588 cut-off events. For 19465/19468 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2289 event pairs, 85 based on Foata normal form. 4/589 useless extension candidates. Maximal degree in co-relation 3517. Up to 393 conditions per place. [2024-06-14 11:19:17,044 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 71 selfloop transitions, 37 changer transitions 0/110 dead transitions. [2024-06-14 11:19:17,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 110 transitions, 1160 flow [2024-06-14 11:19:17,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:17,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:17,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-14 11:19:17,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602693602693603 [2024-06-14 11:19:17,046 INFO L175 Difference]: Start difference. First operand has 104 places, 86 transitions, 700 flow. Second operand 9 states and 107 transitions. [2024-06-14 11:19:17,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 110 transitions, 1160 flow [2024-06-14 11:19:17,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 110 transitions, 1096 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-14 11:19:17,066 INFO L231 Difference]: Finished difference. Result has 108 places, 93 transitions, 812 flow [2024-06-14 11:19:17,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=812, PETRI_PLACES=108, PETRI_TRANSITIONS=93} [2024-06-14 11:19:17,066 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 76 predicate places. [2024-06-14 11:19:17,066 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 93 transitions, 812 flow [2024-06-14 11:19:17,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:17,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:17,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:17,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-14 11:19:17,067 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:17,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:17,068 INFO L85 PathProgramCache]: Analyzing trace with hash 834952830, now seen corresponding path program 3 times [2024-06-14 11:19:17,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:17,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988540808] [2024-06-14 11:19:17,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:17,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:17,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:17,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:17,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:17,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988540808] [2024-06-14 11:19:17,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988540808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:17,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:17,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:17,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115216081] [2024-06-14 11:19:17,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:17,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:17,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:17,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:17,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:17,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:17,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 93 transitions, 812 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:17,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:17,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:17,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:18,150 INFO L124 PetriNetUnfolderBase]: 336/590 cut-off events. [2024-06-14 11:19:18,150 INFO L125 PetriNetUnfolderBase]: For 20634/20634 co-relation queries the response was YES. [2024-06-14 11:19:18,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3666 conditions, 590 events. 336/590 cut-off events. For 20634/20634 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2300 event pairs, 85 based on Foata normal form. 4/593 useless extension candidates. Maximal degree in co-relation 3612. Up to 543 conditions per place. [2024-06-14 11:19:18,155 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 87 selfloop transitions, 18 changer transitions 0/107 dead transitions. [2024-06-14 11:19:18,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 107 transitions, 1140 flow [2024-06-14 11:19:18,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:18,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:18,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-14 11:19:18,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31986531986531985 [2024-06-14 11:19:18,157 INFO L175 Difference]: Start difference. First operand has 108 places, 93 transitions, 812 flow. Second operand 9 states and 95 transitions. [2024-06-14 11:19:18,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 107 transitions, 1140 flow [2024-06-14 11:19:18,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 107 transitions, 1091 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-14 11:19:18,179 INFO L231 Difference]: Finished difference. Result has 114 places, 95 transitions, 843 flow [2024-06-14 11:19:18,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=763, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=843, PETRI_PLACES=114, PETRI_TRANSITIONS=95} [2024-06-14 11:19:18,180 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 82 predicate places. [2024-06-14 11:19:18,180 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 95 transitions, 843 flow [2024-06-14 11:19:18,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:18,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:18,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:18,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-14 11:19:18,181 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:18,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:18,181 INFO L85 PathProgramCache]: Analyzing trace with hash 825421694, now seen corresponding path program 6 times [2024-06-14 11:19:18,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:18,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476948378] [2024-06-14 11:19:18,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:18,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:18,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:19,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:19,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:19,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476948378] [2024-06-14 11:19:19,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476948378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:19,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:19,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:19,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855349418] [2024-06-14 11:19:19,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:19,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:19,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:19,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:19,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:19,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:19,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 95 transitions, 843 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:19,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:19,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:19,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:19,736 INFO L124 PetriNetUnfolderBase]: 332/586 cut-off events. [2024-06-14 11:19:19,736 INFO L125 PetriNetUnfolderBase]: For 19902/19905 co-relation queries the response was YES. [2024-06-14 11:19:19,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3640 conditions, 586 events. 332/586 cut-off events. For 19902/19905 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2269 event pairs, 66 based on Foata normal form. 2/585 useless extension candidates. Maximal degree in co-relation 3583. Up to 427 conditions per place. [2024-06-14 11:19:19,740 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 72 selfloop transitions, 36 changer transitions 0/110 dead transitions. [2024-06-14 11:19:19,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 110 transitions, 1097 flow [2024-06-14 11:19:19,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:19:19,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:19:19,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-14 11:19:19,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35984848484848486 [2024-06-14 11:19:19,742 INFO L175 Difference]: Start difference. First operand has 114 places, 95 transitions, 843 flow. Second operand 8 states and 95 transitions. [2024-06-14 11:19:19,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 110 transitions, 1097 flow [2024-06-14 11:19:19,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 110 transitions, 1032 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-14 11:19:19,761 INFO L231 Difference]: Finished difference. Result has 115 places, 95 transitions, 855 flow [2024-06-14 11:19:19,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=855, PETRI_PLACES=115, PETRI_TRANSITIONS=95} [2024-06-14 11:19:19,762 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 83 predicate places. [2024-06-14 11:19:19,762 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 95 transitions, 855 flow [2024-06-14 11:19:19,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:19,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:19,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:19,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-14 11:19:19,763 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:19,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:19,763 INFO L85 PathProgramCache]: Analyzing trace with hash 825429630, now seen corresponding path program 4 times [2024-06-14 11:19:19,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:19,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962632782] [2024-06-14 11:19:19,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:19,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:19,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:20,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:20,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:20,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962632782] [2024-06-14 11:19:20,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962632782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:20,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:20,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:20,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576159236] [2024-06-14 11:19:20,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:20,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:20,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:20,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:20,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:20,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:20,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 95 transitions, 855 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:20,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:20,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:20,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:21,255 INFO L124 PetriNetUnfolderBase]: 338/596 cut-off events. [2024-06-14 11:19:21,256 INFO L125 PetriNetUnfolderBase]: For 21200/21203 co-relation queries the response was YES. [2024-06-14 11:19:21,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3755 conditions, 596 events. 338/596 cut-off events. For 21200/21203 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2332 event pairs, 75 based on Foata normal form. 4/597 useless extension candidates. Maximal degree in co-relation 3697. Up to 394 conditions per place. [2024-06-14 11:19:21,260 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 70 selfloop transitions, 41 changer transitions 0/113 dead transitions. [2024-06-14 11:19:21,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 113 transitions, 1227 flow [2024-06-14 11:19:21,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:21,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:21,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-14 11:19:21,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35353535353535354 [2024-06-14 11:19:21,261 INFO L175 Difference]: Start difference. First operand has 115 places, 95 transitions, 855 flow. Second operand 9 states and 105 transitions. [2024-06-14 11:19:21,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 113 transitions, 1227 flow [2024-06-14 11:19:21,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 113 transitions, 1139 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-14 11:19:21,296 INFO L231 Difference]: Finished difference. Result has 116 places, 97 transitions, 888 flow [2024-06-14 11:19:21,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=767, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=888, PETRI_PLACES=116, PETRI_TRANSITIONS=97} [2024-06-14 11:19:21,296 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 84 predicate places. [2024-06-14 11:19:21,296 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 97 transitions, 888 flow [2024-06-14 11:19:21,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:21,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:21,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:21,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-14 11:19:21,297 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:21,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:21,298 INFO L85 PathProgramCache]: Analyzing trace with hash 834626400, now seen corresponding path program 5 times [2024-06-14 11:19:21,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:21,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917048030] [2024-06-14 11:19:21,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:21,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:21,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:22,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:22,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:22,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917048030] [2024-06-14 11:19:22,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917048030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:22,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:22,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:22,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176399554] [2024-06-14 11:19:22,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:22,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:22,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:22,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:22,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:22,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:22,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 97 transitions, 888 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:22,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:22,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:22,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:22,715 INFO L124 PetriNetUnfolderBase]: 339/598 cut-off events. [2024-06-14 11:19:22,715 INFO L125 PetriNetUnfolderBase]: For 21842/21845 co-relation queries the response was YES. [2024-06-14 11:19:22,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3813 conditions, 598 events. 339/598 cut-off events. For 21842/21845 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2361 event pairs, 77 based on Foata normal form. 4/599 useless extension candidates. Maximal degree in co-relation 3754. Up to 396 conditions per place. [2024-06-14 11:19:22,720 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 69 selfloop transitions, 44 changer transitions 0/115 dead transitions. [2024-06-14 11:19:22,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 115 transitions, 1272 flow [2024-06-14 11:19:22,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:22,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:22,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-14 11:19:22,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3501683501683502 [2024-06-14 11:19:22,722 INFO L175 Difference]: Start difference. First operand has 116 places, 97 transitions, 888 flow. Second operand 9 states and 104 transitions. [2024-06-14 11:19:22,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 115 transitions, 1272 flow [2024-06-14 11:19:22,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 115 transitions, 1186 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-14 11:19:22,751 INFO L231 Difference]: Finished difference. Result has 119 places, 99 transitions, 933 flow [2024-06-14 11:19:22,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=805, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=933, PETRI_PLACES=119, PETRI_TRANSITIONS=99} [2024-06-14 11:19:22,751 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 87 predicate places. [2024-06-14 11:19:22,751 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 99 transitions, 933 flow [2024-06-14 11:19:22,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:22,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:22,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:22,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-14 11:19:22,752 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:22,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:22,752 INFO L85 PathProgramCache]: Analyzing trace with hash 834964734, now seen corresponding path program 1 times [2024-06-14 11:19:22,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:22,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247873160] [2024-06-14 11:19:22,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:22,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:22,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:24,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:24,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:24,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247873160] [2024-06-14 11:19:24,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247873160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:24,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:24,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:19:24,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347375132] [2024-06-14 11:19:24,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:24,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:19:24,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:24,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:19:24,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:19:24,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:24,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 99 transitions, 933 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:24,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:24,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:24,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:24,337 INFO L124 PetriNetUnfolderBase]: 336/591 cut-off events. [2024-06-14 11:19:24,337 INFO L125 PetriNetUnfolderBase]: For 21719/21719 co-relation queries the response was YES. [2024-06-14 11:19:24,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3768 conditions, 591 events. 336/591 cut-off events. For 21719/21719 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2285 event pairs, 90 based on Foata normal form. 2/592 useless extension candidates. Maximal degree in co-relation 3708. Up to 561 conditions per place. [2024-06-14 11:19:24,341 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 93 selfloop transitions, 15 changer transitions 0/110 dead transitions. [2024-06-14 11:19:24,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 110 transitions, 1173 flow [2024-06-14 11:19:24,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:19:24,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:19:24,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 96 transitions. [2024-06-14 11:19:24,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2909090909090909 [2024-06-14 11:19:24,342 INFO L175 Difference]: Start difference. First operand has 119 places, 99 transitions, 933 flow. Second operand 10 states and 96 transitions. [2024-06-14 11:19:24,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 110 transitions, 1173 flow [2024-06-14 11:19:24,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 110 transitions, 1082 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-14 11:19:24,363 INFO L231 Difference]: Finished difference. Result has 123 places, 99 transitions, 876 flow [2024-06-14 11:19:24,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=876, PETRI_PLACES=123, PETRI_TRANSITIONS=99} [2024-06-14 11:19:24,364 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 91 predicate places. [2024-06-14 11:19:24,364 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 99 transitions, 876 flow [2024-06-14 11:19:24,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:24,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:24,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:24,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-14 11:19:24,365 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:24,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:24,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1558028020, now seen corresponding path program 1 times [2024-06-14 11:19:24,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:24,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617538977] [2024-06-14 11:19:24,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:24,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:25,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:25,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:25,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617538977] [2024-06-14 11:19:25,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617538977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:25,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:25,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:25,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421386482] [2024-06-14 11:19:25,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:25,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:25,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:25,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:25,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:25,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:19:25,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 99 transitions, 876 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:25,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:25,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:19:25,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:25,900 INFO L124 PetriNetUnfolderBase]: 311/568 cut-off events. [2024-06-14 11:19:25,900 INFO L125 PetriNetUnfolderBase]: For 22942/22944 co-relation queries the response was YES. [2024-06-14 11:19:25,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3615 conditions, 568 events. 311/568 cut-off events. For 22942/22944 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2322 event pairs, 43 based on Foata normal form. 2/567 useless extension candidates. Maximal degree in co-relation 3554. Up to 459 conditions per place. [2024-06-14 11:19:25,904 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 92 selfloop transitions, 11 changer transitions 0/117 dead transitions. [2024-06-14 11:19:25,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 117 transitions, 1136 flow [2024-06-14 11:19:25,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:19:25,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:19:25,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-14 11:19:25,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35984848484848486 [2024-06-14 11:19:25,906 INFO L175 Difference]: Start difference. First operand has 123 places, 99 transitions, 876 flow. Second operand 8 states and 95 transitions. [2024-06-14 11:19:25,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 117 transitions, 1136 flow [2024-06-14 11:19:25,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 117 transitions, 1096 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-14 11:19:25,943 INFO L231 Difference]: Finished difference. Result has 123 places, 100 transitions, 878 flow [2024-06-14 11:19:25,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=836, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=878, PETRI_PLACES=123, PETRI_TRANSITIONS=100} [2024-06-14 11:19:25,944 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 91 predicate places. [2024-06-14 11:19:25,944 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 100 transitions, 878 flow [2024-06-14 11:19:25,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:25,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:25,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:25,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-14 11:19:25,945 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:25,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:25,945 INFO L85 PathProgramCache]: Analyzing trace with hash 212330978, now seen corresponding path program 2 times [2024-06-14 11:19:25,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:25,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058708919] [2024-06-14 11:19:25,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:25,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:25,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:27,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:27,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:27,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058708919] [2024-06-14 11:19:27,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058708919] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:27,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:27,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:19:27,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737081684] [2024-06-14 11:19:27,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:27,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:19:27,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:27,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:19:27,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:19:27,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:19:27,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 100 transitions, 878 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:27,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:27,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:19:27,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:28,017 INFO L124 PetriNetUnfolderBase]: 313/574 cut-off events. [2024-06-14 11:19:28,018 INFO L125 PetriNetUnfolderBase]: For 24233/24235 co-relation queries the response was YES. [2024-06-14 11:19:28,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3677 conditions, 574 events. 313/574 cut-off events. For 24233/24235 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2362 event pairs, 60 based on Foata normal form. 2/573 useless extension candidates. Maximal degree in co-relation 3615. Up to 479 conditions per place. [2024-06-14 11:19:28,021 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 92 selfloop transitions, 12 changer transitions 0/118 dead transitions. [2024-06-14 11:19:28,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 118 transitions, 1142 flow [2024-06-14 11:19:28,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:19:28,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:19:28,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-14 11:19:28,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36742424242424243 [2024-06-14 11:19:28,023 INFO L175 Difference]: Start difference. First operand has 123 places, 100 transitions, 878 flow. Second operand 8 states and 97 transitions. [2024-06-14 11:19:28,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 118 transitions, 1142 flow [2024-06-14 11:19:28,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 118 transitions, 1110 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-14 11:19:28,062 INFO L231 Difference]: Finished difference. Result has 125 places, 101 transitions, 892 flow [2024-06-14 11:19:28,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=892, PETRI_PLACES=125, PETRI_TRANSITIONS=101} [2024-06-14 11:19:28,062 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 93 predicate places. [2024-06-14 11:19:28,062 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 101 transitions, 892 flow [2024-06-14 11:19:28,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:28,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:28,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:28,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-14 11:19:28,063 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:28,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:28,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1555166100, now seen corresponding path program 1 times [2024-06-14 11:19:28,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:28,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182875913] [2024-06-14 11:19:28,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:28,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:28,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:29,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:29,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:29,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182875913] [2024-06-14 11:19:29,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182875913] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:29,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:29,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:19:29,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999793112] [2024-06-14 11:19:29,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:29,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:19:29,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:29,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:19:29,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:19:29,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:29,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 101 transitions, 892 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:29,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:29,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:29,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:29,460 INFO L124 PetriNetUnfolderBase]: 350/617 cut-off events. [2024-06-14 11:19:29,460 INFO L125 PetriNetUnfolderBase]: For 25583/25583 co-relation queries the response was YES. [2024-06-14 11:19:29,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3881 conditions, 617 events. 350/617 cut-off events. For 25583/25583 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2462 event pairs, 70 based on Foata normal form. 2/618 useless extension candidates. Maximal degree in co-relation 3818. Up to 548 conditions per place. [2024-06-14 11:19:29,465 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 105 selfloop transitions, 15 changer transitions 0/122 dead transitions. [2024-06-14 11:19:29,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 122 transitions, 1198 flow [2024-06-14 11:19:29,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:29,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:29,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-14 11:19:29,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3367003367003367 [2024-06-14 11:19:29,470 INFO L175 Difference]: Start difference. First operand has 125 places, 101 transitions, 892 flow. Second operand 9 states and 100 transitions. [2024-06-14 11:19:29,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 122 transitions, 1198 flow [2024-06-14 11:19:29,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 122 transitions, 1162 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-14 11:19:29,519 INFO L231 Difference]: Finished difference. Result has 128 places, 103 transitions, 917 flow [2024-06-14 11:19:29,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=917, PETRI_PLACES=128, PETRI_TRANSITIONS=103} [2024-06-14 11:19:29,522 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 96 predicate places. [2024-06-14 11:19:29,522 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 103 transitions, 917 flow [2024-06-14 11:19:29,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:29,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:29,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:29,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-14 11:19:29,523 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:29,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:29,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1439701950, now seen corresponding path program 2 times [2024-06-14 11:19:29,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:29,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442042233] [2024-06-14 11:19:29,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:29,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:29,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:30,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:30,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:30,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442042233] [2024-06-14 11:19:30,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442042233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:30,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:30,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:19:30,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123569607] [2024-06-14 11:19:30,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:30,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:19:30,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:30,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:19:30,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:19:30,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:30,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 103 transitions, 917 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:30,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:30,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:30,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:31,147 INFO L124 PetriNetUnfolderBase]: 376/659 cut-off events. [2024-06-14 11:19:31,147 INFO L125 PetriNetUnfolderBase]: For 29941/29941 co-relation queries the response was YES. [2024-06-14 11:19:31,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4290 conditions, 659 events. 376/659 cut-off events. For 29941/29941 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2688 event pairs, 61 based on Foata normal form. 2/660 useless extension candidates. Maximal degree in co-relation 4226. Up to 505 conditions per place. [2024-06-14 11:19:31,151 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 96 selfloop transitions, 32 changer transitions 0/130 dead transitions. [2024-06-14 11:19:31,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 130 transitions, 1457 flow [2024-06-14 11:19:31,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:31,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:31,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-14 11:19:31,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602693602693603 [2024-06-14 11:19:31,153 INFO L175 Difference]: Start difference. First operand has 128 places, 103 transitions, 917 flow. Second operand 9 states and 107 transitions. [2024-06-14 11:19:31,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 130 transitions, 1457 flow [2024-06-14 11:19:31,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 130 transitions, 1412 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-14 11:19:31,206 INFO L231 Difference]: Finished difference. Result has 130 places, 109 transitions, 1023 flow [2024-06-14 11:19:31,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1023, PETRI_PLACES=130, PETRI_TRANSITIONS=109} [2024-06-14 11:19:31,206 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 98 predicate places. [2024-06-14 11:19:31,207 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 109 transitions, 1023 flow [2024-06-14 11:19:31,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:31,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:31,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:31,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-14 11:19:31,207 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:31,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:31,208 INFO L85 PathProgramCache]: Analyzing trace with hash 330603356, now seen corresponding path program 1 times [2024-06-14 11:19:31,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:31,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302262147] [2024-06-14 11:19:31,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:31,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:31,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:32,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:32,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:32,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302262147] [2024-06-14 11:19:32,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302262147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:32,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:32,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:19:32,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142154090] [2024-06-14 11:19:32,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:32,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:19:32,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:32,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:19:32,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:19:32,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:32,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 109 transitions, 1023 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:32,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:32,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:32,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:33,034 INFO L124 PetriNetUnfolderBase]: 374/656 cut-off events. [2024-06-14 11:19:33,034 INFO L125 PetriNetUnfolderBase]: For 30225/30225 co-relation queries the response was YES. [2024-06-14 11:19:33,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4330 conditions, 656 events. 374/656 cut-off events. For 30225/30225 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2665 event pairs, 85 based on Foata normal form. 1/656 useless extension candidates. Maximal degree in co-relation 4265. Up to 587 conditions per place. [2024-06-14 11:19:33,038 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 102 selfloop transitions, 23 changer transitions 0/127 dead transitions. [2024-06-14 11:19:33,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 127 transitions, 1351 flow [2024-06-14 11:19:33,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:33,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:33,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-14 11:19:33,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3265993265993266 [2024-06-14 11:19:33,039 INFO L175 Difference]: Start difference. First operand has 130 places, 109 transitions, 1023 flow. Second operand 9 states and 97 transitions. [2024-06-14 11:19:33,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 127 transitions, 1351 flow [2024-06-14 11:19:33,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 127 transitions, 1308 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-14 11:19:33,080 INFO L231 Difference]: Finished difference. Result has 135 places, 111 transitions, 1072 flow [2024-06-14 11:19:33,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=980, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1072, PETRI_PLACES=135, PETRI_TRANSITIONS=111} [2024-06-14 11:19:33,081 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 103 predicate places. [2024-06-14 11:19:33,081 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 111 transitions, 1072 flow [2024-06-14 11:19:33,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:33,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:33,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:33,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-14 11:19:33,082 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:33,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:33,082 INFO L85 PathProgramCache]: Analyzing trace with hash 329824012, now seen corresponding path program 3 times [2024-06-14 11:19:33,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:33,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808186909] [2024-06-14 11:19:33,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:33,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:33,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:34,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:34,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:34,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808186909] [2024-06-14 11:19:34,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808186909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:34,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:34,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:19:34,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373762889] [2024-06-14 11:19:34,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:34,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:19:34,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:34,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:19:34,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:19:34,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:19:34,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 111 transitions, 1072 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:34,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:34,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:19:34,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:34,976 INFO L124 PetriNetUnfolderBase]: 342/624 cut-off events. [2024-06-14 11:19:34,977 INFO L125 PetriNetUnfolderBase]: For 32727/32731 co-relation queries the response was YES. [2024-06-14 11:19:34,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4298 conditions, 624 events. 342/624 cut-off events. For 32727/32731 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2671 event pairs, 54 based on Foata normal form. 2/621 useless extension candidates. Maximal degree in co-relation 4231. Up to 512 conditions per place. [2024-06-14 11:19:34,981 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 97 selfloop transitions, 17 changer transitions 0/128 dead transitions. [2024-06-14 11:19:34,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 128 transitions, 1356 flow [2024-06-14 11:19:34,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:19:34,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:19:34,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-14 11:19:34,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3712121212121212 [2024-06-14 11:19:34,982 INFO L175 Difference]: Start difference. First operand has 135 places, 111 transitions, 1072 flow. Second operand 8 states and 98 transitions. [2024-06-14 11:19:34,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 128 transitions, 1356 flow [2024-06-14 11:19:35,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 128 transitions, 1294 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-14 11:19:35,033 INFO L231 Difference]: Finished difference. Result has 136 places, 112 transitions, 1068 flow [2024-06-14 11:19:35,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1010, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1068, PETRI_PLACES=136, PETRI_TRANSITIONS=112} [2024-06-14 11:19:35,034 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 104 predicate places. [2024-06-14 11:19:35,034 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 112 transitions, 1068 flow [2024-06-14 11:19:35,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:35,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:35,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:35,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-14 11:19:35,035 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:35,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:35,035 INFO L85 PathProgramCache]: Analyzing trace with hash 330603108, now seen corresponding path program 3 times [2024-06-14 11:19:35,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:35,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073636451] [2024-06-14 11:19:35,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:35,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:35,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:36,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:36,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:36,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073636451] [2024-06-14 11:19:36,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073636451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:36,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:36,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:19:36,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306803572] [2024-06-14 11:19:36,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:36,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:19:36,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:36,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:19:36,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:19:36,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:36,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 112 transitions, 1068 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:36,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:36,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:36,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:36,637 INFO L124 PetriNetUnfolderBase]: 374/658 cut-off events. [2024-06-14 11:19:36,637 INFO L125 PetriNetUnfolderBase]: For 32371/32371 co-relation queries the response was YES. [2024-06-14 11:19:36,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4357 conditions, 658 events. 374/658 cut-off events. For 32371/32371 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2687 event pairs, 59 based on Foata normal form. 2/659 useless extension candidates. Maximal degree in co-relation 4289. Up to 507 conditions per place. [2024-06-14 11:19:36,641 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 97 selfloop transitions, 34 changer transitions 0/133 dead transitions. [2024-06-14 11:19:36,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 133 transitions, 1466 flow [2024-06-14 11:19:36,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:36,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:36,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-14 11:19:36,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3569023569023569 [2024-06-14 11:19:36,642 INFO L175 Difference]: Start difference. First operand has 136 places, 112 transitions, 1068 flow. Second operand 9 states and 106 transitions. [2024-06-14 11:19:36,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 133 transitions, 1466 flow [2024-06-14 11:19:36,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 133 transitions, 1400 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-14 11:19:36,684 INFO L231 Difference]: Finished difference. Result has 139 places, 112 transitions, 1076 flow [2024-06-14 11:19:36,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1002, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1076, PETRI_PLACES=139, PETRI_TRANSITIONS=112} [2024-06-14 11:19:36,684 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 107 predicate places. [2024-06-14 11:19:36,685 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 112 transitions, 1076 flow [2024-06-14 11:19:36,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:36,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:36,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:36,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-14 11:19:36,685 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:36,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:36,686 INFO L85 PathProgramCache]: Analyzing trace with hash 330423618, now seen corresponding path program 4 times [2024-06-14 11:19:36,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:36,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724389704] [2024-06-14 11:19:36,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:36,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:36,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:37,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:37,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:37,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724389704] [2024-06-14 11:19:37,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724389704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:37,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:37,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:19:37,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241205559] [2024-06-14 11:19:37,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:37,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:19:37,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:37,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:19:37,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:19:38,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:38,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 112 transitions, 1076 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:38,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:38,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:38,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:38,442 INFO L124 PetriNetUnfolderBase]: 370/652 cut-off events. [2024-06-14 11:19:38,442 INFO L125 PetriNetUnfolderBase]: For 31861/31861 co-relation queries the response was YES. [2024-06-14 11:19:38,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4278 conditions, 652 events. 370/652 cut-off events. For 31861/31861 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2662 event pairs, 65 based on Foata normal form. 2/653 useless extension candidates. Maximal degree in co-relation 4209. Up to 504 conditions per place. [2024-06-14 11:19:38,445 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 97 selfloop transitions, 31 changer transitions 0/130 dead transitions. [2024-06-14 11:19:38,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 130 transitions, 1374 flow [2024-06-14 11:19:38,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:38,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:38,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-14 11:19:38,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35353535353535354 [2024-06-14 11:19:38,448 INFO L175 Difference]: Start difference. First operand has 139 places, 112 transitions, 1076 flow. Second operand 9 states and 105 transitions. [2024-06-14 11:19:38,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 130 transitions, 1374 flow [2024-06-14 11:19:38,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 130 transitions, 1301 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-14 11:19:38,489 INFO L231 Difference]: Finished difference. Result has 141 places, 112 transitions, 1070 flow [2024-06-14 11:19:38,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1003, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1070, PETRI_PLACES=141, PETRI_TRANSITIONS=112} [2024-06-14 11:19:38,489 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 109 predicate places. [2024-06-14 11:19:38,489 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 112 transitions, 1070 flow [2024-06-14 11:19:38,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:38,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:38,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:38,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-14 11:19:38,490 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:38,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:38,490 INFO L85 PathProgramCache]: Analyzing trace with hash 502737920, now seen corresponding path program 1 times [2024-06-14 11:19:38,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:38,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305001670] [2024-06-14 11:19:38,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:38,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:38,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:39,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:39,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:39,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305001670] [2024-06-14 11:19:39,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305001670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:39,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:39,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:19:39,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375731753] [2024-06-14 11:19:39,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:39,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:19:39,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:39,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:19:39,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:19:39,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:39,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 112 transitions, 1070 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:39,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:39,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:39,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:40,230 INFO L124 PetriNetUnfolderBase]: 376/663 cut-off events. [2024-06-14 11:19:40,230 INFO L125 PetriNetUnfolderBase]: For 33379/33382 co-relation queries the response was YES. [2024-06-14 11:19:40,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4350 conditions, 663 events. 376/663 cut-off events. For 33379/33382 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2723 event pairs, 86 based on Foata normal form. 4/665 useless extension candidates. Maximal degree in co-relation 4280. Up to 597 conditions per place. [2024-06-14 11:19:40,236 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 112 selfloop transitions, 18 changer transitions 0/132 dead transitions. [2024-06-14 11:19:40,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 132 transitions, 1412 flow [2024-06-14 11:19:40,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:19:40,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:19:40,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-14 11:19:40,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3212121212121212 [2024-06-14 11:19:40,240 INFO L175 Difference]: Start difference. First operand has 141 places, 112 transitions, 1070 flow. Second operand 10 states and 106 transitions. [2024-06-14 11:19:40,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 132 transitions, 1412 flow [2024-06-14 11:19:40,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 132 transitions, 1314 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-14 11:19:40,289 INFO L231 Difference]: Finished difference. Result has 142 places, 114 transitions, 1049 flow [2024-06-14 11:19:40,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=972, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1049, PETRI_PLACES=142, PETRI_TRANSITIONS=114} [2024-06-14 11:19:40,289 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 110 predicate places. [2024-06-14 11:19:40,290 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 114 transitions, 1049 flow [2024-06-14 11:19:40,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:40,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:40,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:40,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-14 11:19:40,290 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:40,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:40,291 INFO L85 PathProgramCache]: Analyzing trace with hash 450255116, now seen corresponding path program 4 times [2024-06-14 11:19:40,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:40,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973102454] [2024-06-14 11:19:40,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:40,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:40,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:42,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:42,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:42,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973102454] [2024-06-14 11:19:42,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973102454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:42,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:42,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:19:42,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431197220] [2024-06-14 11:19:42,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:42,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:19:42,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:42,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:19:42,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:19:42,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:19:42,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 114 transitions, 1049 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:42,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:42,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:19:42,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:42,644 INFO L124 PetriNetUnfolderBase]: 339/621 cut-off events. [2024-06-14 11:19:42,644 INFO L125 PetriNetUnfolderBase]: For 32941/32948 co-relation queries the response was YES. [2024-06-14 11:19:42,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4066 conditions, 621 events. 339/621 cut-off events. For 32941/32948 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2645 event pairs, 61 based on Foata normal form. 2/616 useless extension candidates. Maximal degree in co-relation 3995. Up to 490 conditions per place. [2024-06-14 11:19:42,648 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 94 selfloop transitions, 20 changer transitions 0/128 dead transitions. [2024-06-14 11:19:42,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 128 transitions, 1311 flow [2024-06-14 11:19:42,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:19:42,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:19:42,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-14 11:19:42,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3712121212121212 [2024-06-14 11:19:42,649 INFO L175 Difference]: Start difference. First operand has 142 places, 114 transitions, 1049 flow. Second operand 8 states and 98 transitions. [2024-06-14 11:19:42,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 128 transitions, 1311 flow [2024-06-14 11:19:42,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 128 transitions, 1258 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-14 11:19:42,698 INFO L231 Difference]: Finished difference. Result has 142 places, 114 transitions, 1040 flow [2024-06-14 11:19:42,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=996, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1040, PETRI_PLACES=142, PETRI_TRANSITIONS=114} [2024-06-14 11:19:42,699 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 110 predicate places. [2024-06-14 11:19:42,699 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 114 transitions, 1040 flow [2024-06-14 11:19:42,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:42,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:42,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:42,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-14 11:19:42,699 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:42,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:42,700 INFO L85 PathProgramCache]: Analyzing trace with hash -898202628, now seen corresponding path program 5 times [2024-06-14 11:19:42,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:42,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899542571] [2024-06-14 11:19:42,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:42,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:42,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:43,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:43,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:43,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899542571] [2024-06-14 11:19:43,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899542571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:43,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:43,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:19:43,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064448568] [2024-06-14 11:19:43,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:43,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:19:43,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:43,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:19:43,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:19:44,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:44,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 114 transitions, 1040 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:44,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:44,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:44,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:44,473 INFO L124 PetriNetUnfolderBase]: 389/685 cut-off events. [2024-06-14 11:19:44,473 INFO L125 PetriNetUnfolderBase]: For 36493/36496 co-relation queries the response was YES. [2024-06-14 11:19:44,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4461 conditions, 685 events. 389/685 cut-off events. For 36493/36496 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2833 event pairs, 71 based on Foata normal form. 2/684 useless extension candidates. Maximal degree in co-relation 4389. Up to 422 conditions per place. [2024-06-14 11:19:44,478 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 94 selfloop transitions, 45 changer transitions 0/141 dead transitions. [2024-06-14 11:19:44,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 141 transitions, 1644 flow [2024-06-14 11:19:44,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:44,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:44,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-14 11:19:44,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38047138047138046 [2024-06-14 11:19:44,478 INFO L175 Difference]: Start difference. First operand has 142 places, 114 transitions, 1040 flow. Second operand 9 states and 113 transitions. [2024-06-14 11:19:44,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 141 transitions, 1644 flow [2024-06-14 11:19:44,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 141 transitions, 1572 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-14 11:19:44,529 INFO L231 Difference]: Finished difference. Result has 144 places, 120 transitions, 1157 flow [2024-06-14 11:19:44,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=968, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1157, PETRI_PLACES=144, PETRI_TRANSITIONS=120} [2024-06-14 11:19:44,529 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 112 predicate places. [2024-06-14 11:19:44,529 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 120 transitions, 1157 flow [2024-06-14 11:19:44,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:44,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:44,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:44,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-14 11:19:44,530 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:44,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:44,530 INFO L85 PathProgramCache]: Analyzing trace with hash 450433056, now seen corresponding path program 6 times [2024-06-14 11:19:44,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:44,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594967403] [2024-06-14 11:19:44,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:44,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:44,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:45,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:45,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:45,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594967403] [2024-06-14 11:19:45,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594967403] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:45,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:45,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:19:45,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417474418] [2024-06-14 11:19:45,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:45,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:19:45,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:45,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:19:45,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:19:45,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:45,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 120 transitions, 1157 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:45,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:45,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:45,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:46,234 INFO L124 PetriNetUnfolderBase]: 395/695 cut-off events. [2024-06-14 11:19:46,234 INFO L125 PetriNetUnfolderBase]: For 38112/38115 co-relation queries the response was YES. [2024-06-14 11:19:46,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4608 conditions, 695 events. 395/695 cut-off events. For 38112/38115 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2895 event pairs, 71 based on Foata normal form. 2/694 useless extension candidates. Maximal degree in co-relation 4535. Up to 428 conditions per place. [2024-06-14 11:19:46,239 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 94 selfloop transitions, 46 changer transitions 0/142 dead transitions. [2024-06-14 11:19:46,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 142 transitions, 1707 flow [2024-06-14 11:19:46,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:46,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:46,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-14 11:19:46,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38047138047138046 [2024-06-14 11:19:46,240 INFO L175 Difference]: Start difference. First operand has 144 places, 120 transitions, 1157 flow. Second operand 9 states and 113 transitions. [2024-06-14 11:19:46,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 142 transitions, 1707 flow [2024-06-14 11:19:46,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 142 transitions, 1594 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-14 11:19:46,294 INFO L231 Difference]: Finished difference. Result has 147 places, 122 transitions, 1175 flow [2024-06-14 11:19:46,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1050, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1175, PETRI_PLACES=147, PETRI_TRANSITIONS=122} [2024-06-14 11:19:46,295 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 115 predicate places. [2024-06-14 11:19:46,295 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 122 transitions, 1175 flow [2024-06-14 11:19:46,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:46,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:46,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:46,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-14 11:19:46,296 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:46,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:46,296 INFO L85 PathProgramCache]: Analyzing trace with hash -181723106, now seen corresponding path program 7 times [2024-06-14 11:19:46,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:46,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020449340] [2024-06-14 11:19:46,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:46,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:46,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:47,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:47,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:47,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020449340] [2024-06-14 11:19:47,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020449340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:47,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:47,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:19:47,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071358586] [2024-06-14 11:19:47,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:47,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:19:47,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:47,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:19:47,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:19:47,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:47,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 122 transitions, 1175 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:47,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:47,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:47,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:47,701 INFO L124 PetriNetUnfolderBase]: 411/721 cut-off events. [2024-06-14 11:19:47,701 INFO L125 PetriNetUnfolderBase]: For 42038/42041 co-relation queries the response was YES. [2024-06-14 11:19:47,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4851 conditions, 721 events. 411/721 cut-off events. For 42038/42041 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3037 event pairs, 63 based on Foata normal form. 2/720 useless extension candidates. Maximal degree in co-relation 4778. Up to 443 conditions per place. [2024-06-14 11:19:47,705 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 92 selfloop transitions, 54 changer transitions 0/148 dead transitions. [2024-06-14 11:19:47,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 148 transitions, 1877 flow [2024-06-14 11:19:47,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:47,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:47,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-14 11:19:47,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38047138047138046 [2024-06-14 11:19:47,706 INFO L175 Difference]: Start difference. First operand has 147 places, 122 transitions, 1175 flow. Second operand 9 states and 113 transitions. [2024-06-14 11:19:47,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 148 transitions, 1877 flow [2024-06-14 11:19:47,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 148 transitions, 1768 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-14 11:19:47,771 INFO L231 Difference]: Finished difference. Result has 150 places, 126 transitions, 1247 flow [2024-06-14 11:19:47,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1074, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1247, PETRI_PLACES=150, PETRI_TRANSITIONS=126} [2024-06-14 11:19:47,771 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 118 predicate places. [2024-06-14 11:19:47,771 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 126 transitions, 1247 flow [2024-06-14 11:19:47,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:47,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:47,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:47,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-14 11:19:47,772 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:47,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:47,772 INFO L85 PathProgramCache]: Analyzing trace with hash -181483538, now seen corresponding path program 2 times [2024-06-14 11:19:47,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:47,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816417544] [2024-06-14 11:19:47,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:47,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:47,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:49,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:49,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:49,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816417544] [2024-06-14 11:19:49,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816417544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:49,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:49,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:19:49,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42652173] [2024-06-14 11:19:49,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:49,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:19:49,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:49,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:19:49,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:19:49,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:49,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 126 transitions, 1247 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:49,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:49,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:49,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:49,510 INFO L124 PetriNetUnfolderBase]: 417/731 cut-off events. [2024-06-14 11:19:49,510 INFO L125 PetriNetUnfolderBase]: For 43817/43820 co-relation queries the response was YES. [2024-06-14 11:19:49,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4950 conditions, 731 events. 417/731 cut-off events. For 43817/43820 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3086 event pairs, 85 based on Foata normal form. 4/732 useless extension candidates. Maximal degree in co-relation 4876. Up to 604 conditions per place. [2024-06-14 11:19:49,515 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 107 selfloop transitions, 35 changer transitions 0/144 dead transitions. [2024-06-14 11:19:49,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 144 transitions, 1613 flow [2024-06-14 11:19:49,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:19:49,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:19:49,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-14 11:19:49,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3303030303030303 [2024-06-14 11:19:49,516 INFO L175 Difference]: Start difference. First operand has 150 places, 126 transitions, 1247 flow. Second operand 10 states and 109 transitions. [2024-06-14 11:19:49,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 144 transitions, 1613 flow [2024-06-14 11:19:49,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 144 transitions, 1483 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-14 11:19:49,602 INFO L231 Difference]: Finished difference. Result has 154 places, 128 transitions, 1232 flow [2024-06-14 11:19:49,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1117, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1232, PETRI_PLACES=154, PETRI_TRANSITIONS=128} [2024-06-14 11:19:49,603 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 122 predicate places. [2024-06-14 11:19:49,603 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 128 transitions, 1232 flow [2024-06-14 11:19:49,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:49,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:49,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:49,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-14 11:19:49,604 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:49,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:49,604 INFO L85 PathProgramCache]: Analyzing trace with hash 450260076, now seen corresponding path program 8 times [2024-06-14 11:19:49,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:49,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898364623] [2024-06-14 11:19:49,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:49,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:49,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:50,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:50,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:50,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898364623] [2024-06-14 11:19:50,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898364623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:50,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:50,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:50,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400356235] [2024-06-14 11:19:50,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:50,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:50,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:50,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:50,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:50,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:50,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 128 transitions, 1232 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:50,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:50,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:50,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:51,019 INFO L124 PetriNetUnfolderBase]: 413/725 cut-off events. [2024-06-14 11:19:51,020 INFO L125 PetriNetUnfolderBase]: For 42857/42860 co-relation queries the response was YES. [2024-06-14 11:19:51,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4773 conditions, 725 events. 413/725 cut-off events. For 42857/42860 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3061 event pairs, 80 based on Foata normal form. 2/724 useless extension candidates. Maximal degree in co-relation 4698. Up to 450 conditions per place. [2024-06-14 11:19:51,024 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 90 selfloop transitions, 53 changer transitions 0/145 dead transitions. [2024-06-14 11:19:51,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 145 transitions, 1658 flow [2024-06-14 11:19:51,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:51,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:51,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-14 11:19:51,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-14 11:19:51,025 INFO L175 Difference]: Start difference. First operand has 154 places, 128 transitions, 1232 flow. Second operand 9 states and 108 transitions. [2024-06-14 11:19:51,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 145 transitions, 1658 flow [2024-06-14 11:19:51,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 145 transitions, 1549 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-14 11:19:51,092 INFO L231 Difference]: Finished difference. Result has 155 places, 128 transitions, 1234 flow [2024-06-14 11:19:51,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1123, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1234, PETRI_PLACES=155, PETRI_TRANSITIONS=128} [2024-06-14 11:19:51,093 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 123 predicate places. [2024-06-14 11:19:51,093 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 128 transitions, 1234 flow [2024-06-14 11:19:51,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:51,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:51,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:51,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-14 11:19:51,094 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:51,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:51,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1969692696, now seen corresponding path program 9 times [2024-06-14 11:19:51,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:51,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725062510] [2024-06-14 11:19:51,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:51,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:51,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:52,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:52,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:52,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725062510] [2024-06-14 11:19:52,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725062510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:52,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:52,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:19:52,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799340672] [2024-06-14 11:19:52,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:52,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:19:52,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:52,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:19:52,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:19:52,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:52,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 128 transitions, 1234 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:52,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:52,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:52,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:52,669 INFO L124 PetriNetUnfolderBase]: 409/719 cut-off events. [2024-06-14 11:19:52,669 INFO L125 PetriNetUnfolderBase]: For 41789/41792 co-relation queries the response was YES. [2024-06-14 11:19:52,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4686 conditions, 719 events. 409/719 cut-off events. For 41789/41792 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3032 event pairs, 65 based on Foata normal form. 2/718 useless extension candidates. Maximal degree in co-relation 4610. Up to 447 conditions per place. [2024-06-14 11:19:52,675 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 89 selfloop transitions, 55 changer transitions 0/146 dead transitions. [2024-06-14 11:19:52,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 146 transitions, 1668 flow [2024-06-14 11:19:52,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:52,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:52,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-14 11:19:52,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-14 11:19:52,677 INFO L175 Difference]: Start difference. First operand has 155 places, 128 transitions, 1234 flow. Second operand 9 states and 108 transitions. [2024-06-14 11:19:52,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 146 transitions, 1668 flow [2024-06-14 11:19:52,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 146 transitions, 1544 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-14 11:19:52,755 INFO L231 Difference]: Finished difference. Result has 156 places, 128 transitions, 1225 flow [2024-06-14 11:19:52,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1110, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1225, PETRI_PLACES=156, PETRI_TRANSITIONS=128} [2024-06-14 11:19:52,756 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 124 predicate places. [2024-06-14 11:19:52,756 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 128 transitions, 1225 flow [2024-06-14 11:19:52,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:52,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:52,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:52,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-14 11:19:52,757 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:52,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:52,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1686609740, now seen corresponding path program 3 times [2024-06-14 11:19:52,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:52,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18183877] [2024-06-14 11:19:52,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:52,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:52,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:54,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:54,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:54,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18183877] [2024-06-14 11:19:54,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18183877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:54,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:54,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:19:54,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597714867] [2024-06-14 11:19:54,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:54,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:19:54,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:54,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:19:54,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:19:54,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:54,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 128 transitions, 1225 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:54,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:54,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:54,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:54,445 INFO L124 PetriNetUnfolderBase]: 415/729 cut-off events. [2024-06-14 11:19:54,445 INFO L125 PetriNetUnfolderBase]: For 43554/43557 co-relation queries the response was YES. [2024-06-14 11:19:54,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4757 conditions, 729 events. 415/729 cut-off events. For 43554/43557 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3081 event pairs, 89 based on Foata normal form. 4/730 useless extension candidates. Maximal degree in co-relation 4680. Up to 602 conditions per place. [2024-06-14 11:19:54,449 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 111 selfloop transitions, 33 changer transitions 0/146 dead transitions. [2024-06-14 11:19:54,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 146 transitions, 1599 flow [2024-06-14 11:19:54,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:19:54,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:19:54,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-14 11:19:54,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 11:19:54,451 INFO L175 Difference]: Start difference. First operand has 156 places, 128 transitions, 1225 flow. Second operand 10 states and 110 transitions. [2024-06-14 11:19:54,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 146 transitions, 1599 flow [2024-06-14 11:19:54,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 146 transitions, 1475 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-14 11:19:54,534 INFO L231 Difference]: Finished difference. Result has 158 places, 130 transitions, 1216 flow [2024-06-14 11:19:54,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1101, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1216, PETRI_PLACES=158, PETRI_TRANSITIONS=130} [2024-06-14 11:19:54,534 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 126 predicate places. [2024-06-14 11:19:54,534 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 130 transitions, 1216 flow [2024-06-14 11:19:54,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:54,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:54,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:54,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-14 11:19:54,535 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:54,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:54,535 INFO L85 PathProgramCache]: Analyzing trace with hash 103607404, now seen corresponding path program 10 times [2024-06-14 11:19:54,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:54,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182162488] [2024-06-14 11:19:54,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:54,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:54,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:55,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:55,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:55,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182162488] [2024-06-14 11:19:55,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182162488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:55,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:55,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:19:55,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025950260] [2024-06-14 11:19:55,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:55,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:19:55,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:55,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:19:55,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:19:55,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:55,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 130 transitions, 1216 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:55,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:55,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:55,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:55,996 INFO L124 PetriNetUnfolderBase]: 411/723 cut-off events. [2024-06-14 11:19:55,996 INFO L125 PetriNetUnfolderBase]: For 42317/42320 co-relation queries the response was YES. [2024-06-14 11:19:55,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4586 conditions, 723 events. 411/723 cut-off events. For 42317/42320 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3055 event pairs, 58 based on Foata normal form. 2/722 useless extension candidates. Maximal degree in co-relation 4508. Up to 454 conditions per place. [2024-06-14 11:19:56,001 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 84 selfloop transitions, 62 changer transitions 0/148 dead transitions. [2024-06-14 11:19:56,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 148 transitions, 1554 flow [2024-06-14 11:19:56,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:56,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:56,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-14 11:19:56,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602693602693603 [2024-06-14 11:19:56,002 INFO L175 Difference]: Start difference. First operand has 158 places, 130 transitions, 1216 flow. Second operand 9 states and 107 transitions. [2024-06-14 11:19:56,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 148 transitions, 1554 flow [2024-06-14 11:19:56,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 148 transitions, 1445 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-14 11:19:56,085 INFO L231 Difference]: Finished difference. Result has 159 places, 130 transitions, 1236 flow [2024-06-14 11:19:56,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1107, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1236, PETRI_PLACES=159, PETRI_TRANSITIONS=130} [2024-06-14 11:19:56,085 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 127 predicate places. [2024-06-14 11:19:56,085 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 130 transitions, 1236 flow [2024-06-14 11:19:56,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:56,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:56,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:56,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-14 11:19:56,086 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:56,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:56,087 INFO L85 PathProgramCache]: Analyzing trace with hash 113735662, now seen corresponding path program 4 times [2024-06-14 11:19:56,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:56,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767290061] [2024-06-14 11:19:56,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:56,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:56,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:57,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:57,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:57,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767290061] [2024-06-14 11:19:57,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767290061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:57,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:57,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:19:57,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3029924] [2024-06-14 11:19:57,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:57,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:19:57,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:57,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:19:57,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:19:57,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:57,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 130 transitions, 1236 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:57,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:57,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:57,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:57,497 INFO L124 PetriNetUnfolderBase]: 407/715 cut-off events. [2024-06-14 11:19:57,497 INFO L125 PetriNetUnfolderBase]: For 40625/40625 co-relation queries the response was YES. [2024-06-14 11:19:57,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4529 conditions, 715 events. 407/715 cut-off events. For 40625/40625 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3014 event pairs, 95 based on Foata normal form. 2/716 useless extension candidates. Maximal degree in co-relation 4450. Up to 671 conditions per place. [2024-06-14 11:19:57,502 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 122 selfloop transitions, 18 changer transitions 0/142 dead transitions. [2024-06-14 11:19:57,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 142 transitions, 1546 flow [2024-06-14 11:19:57,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:19:57,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:19:57,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-14 11:19:57,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30606060606060603 [2024-06-14 11:19:57,505 INFO L175 Difference]: Start difference. First operand has 159 places, 130 transitions, 1236 flow. Second operand 10 states and 101 transitions. [2024-06-14 11:19:57,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 142 transitions, 1546 flow [2024-06-14 11:19:57,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 142 transitions, 1396 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-14 11:19:57,585 INFO L231 Difference]: Finished difference. Result has 160 places, 130 transitions, 1127 flow [2024-06-14 11:19:57,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1086, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1127, PETRI_PLACES=160, PETRI_TRANSITIONS=130} [2024-06-14 11:19:57,586 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 128 predicate places. [2024-06-14 11:19:57,586 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 130 transitions, 1127 flow [2024-06-14 11:19:57,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:57,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:57,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:57,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-14 11:19:57,586 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:57,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:57,586 INFO L85 PathProgramCache]: Analyzing trace with hash 103616332, now seen corresponding path program 5 times [2024-06-14 11:19:57,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:57,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977256009] [2024-06-14 11:19:57,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:57,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:57,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:58,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:58,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:58,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977256009] [2024-06-14 11:19:58,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977256009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:58,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:58,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:19:58,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552133646] [2024-06-14 11:19:58,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:58,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:19:58,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:58,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:19:58,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:19:58,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:58,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 130 transitions, 1127 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:58,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:58,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:58,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:59,212 INFO L124 PetriNetUnfolderBase]: 408/719 cut-off events. [2024-06-14 11:19:59,212 INFO L125 PetriNetUnfolderBase]: For 40688/40691 co-relation queries the response was YES. [2024-06-14 11:19:59,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4384 conditions, 719 events. 408/719 cut-off events. For 40688/40691 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3053 event pairs, 81 based on Foata normal form. 4/720 useless extension candidates. Maximal degree in co-relation 4304. Up to 592 conditions per place. [2024-06-14 11:19:59,219 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 108 selfloop transitions, 38 changer transitions 0/148 dead transitions. [2024-06-14 11:19:59,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 148 transitions, 1509 flow [2024-06-14 11:19:59,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:19:59,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:19:59,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-14 11:19:59,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32727272727272727 [2024-06-14 11:19:59,220 INFO L175 Difference]: Start difference. First operand has 160 places, 130 transitions, 1127 flow. Second operand 10 states and 108 transitions. [2024-06-14 11:19:59,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 148 transitions, 1509 flow [2024-06-14 11:19:59,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 148 transitions, 1467 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-14 11:19:59,314 INFO L231 Difference]: Finished difference. Result has 161 places, 132 transitions, 1214 flow [2024-06-14 11:19:59,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1085, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1214, PETRI_PLACES=161, PETRI_TRANSITIONS=132} [2024-06-14 11:19:59,314 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 129 predicate places. [2024-06-14 11:19:59,314 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 132 transitions, 1214 flow [2024-06-14 11:19:59,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:59,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:59,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:59,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-14 11:19:59,315 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:59,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:59,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1114416653, now seen corresponding path program 1 times [2024-06-14 11:19:59,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:59,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929550766] [2024-06-14 11:19:59,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:59,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:59,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:00,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:00,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:00,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929550766] [2024-06-14 11:20:00,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929550766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:00,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:00,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:20:00,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78383985] [2024-06-14 11:20:00,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:00,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:20:00,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:00,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:20:00,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:20:00,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:00,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 132 transitions, 1214 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:00,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:00,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:00,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:01,144 INFO L124 PetriNetUnfolderBase]: 445/790 cut-off events. [2024-06-14 11:20:01,144 INFO L125 PetriNetUnfolderBase]: For 42251/42251 co-relation queries the response was YES. [2024-06-14 11:20:01,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4726 conditions, 790 events. 445/790 cut-off events. For 42251/42251 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3464 event pairs, 81 based on Foata normal form. 2/791 useless extension candidates. Maximal degree in co-relation 4645. Up to 691 conditions per place. [2024-06-14 11:20:01,149 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 144 selfloop transitions, 19 changer transitions 0/165 dead transitions. [2024-06-14 11:20:01,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 165 transitions, 1678 flow [2024-06-14 11:20:01,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:20:01,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:20:01,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-14 11:20:01,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 11:20:01,149 INFO L175 Difference]: Start difference. First operand has 161 places, 132 transitions, 1214 flow. Second operand 10 states and 110 transitions. [2024-06-14 11:20:01,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 165 transitions, 1678 flow [2024-06-14 11:20:01,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 165 transitions, 1567 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-14 11:20:01,225 INFO L231 Difference]: Finished difference. Result has 167 places, 143 transitions, 1252 flow [2024-06-14 11:20:01,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1109, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1252, PETRI_PLACES=167, PETRI_TRANSITIONS=143} [2024-06-14 11:20:01,225 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 135 predicate places. [2024-06-14 11:20:01,225 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 143 transitions, 1252 flow [2024-06-14 11:20:01,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:01,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:01,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:01,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-14 11:20:01,225 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:01,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:01,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1012674205, now seen corresponding path program 2 times [2024-06-14 11:20:01,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:01,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991961501] [2024-06-14 11:20:01,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:01,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:01,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:02,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:02,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:02,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991961501] [2024-06-14 11:20:02,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991961501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:02,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:02,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:20:02,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447752799] [2024-06-14 11:20:02,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:02,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:20:02,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:02,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:20:02,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:20:02,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:02,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 143 transitions, 1252 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:02,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:02,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:02,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:02,896 INFO L124 PetriNetUnfolderBase]: 449/798 cut-off events. [2024-06-14 11:20:02,897 INFO L125 PetriNetUnfolderBase]: For 43596/43596 co-relation queries the response was YES. [2024-06-14 11:20:02,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4776 conditions, 798 events. 449/798 cut-off events. For 43596/43596 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3502 event pairs, 66 based on Foata normal form. 2/799 useless extension candidates. Maximal degree in co-relation 4690. Up to 662 conditions per place. [2024-06-14 11:20:02,902 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 138 selfloop transitions, 22 changer transitions 0/162 dead transitions. [2024-06-14 11:20:02,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 162 transitions, 1634 flow [2024-06-14 11:20:02,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:20:02,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:20:02,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-14 11:20:02,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32323232323232326 [2024-06-14 11:20:02,903 INFO L175 Difference]: Start difference. First operand has 167 places, 143 transitions, 1252 flow. Second operand 9 states and 96 transitions. [2024-06-14 11:20:02,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 162 transitions, 1634 flow [2024-06-14 11:20:02,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 162 transitions, 1607 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-14 11:20:02,989 INFO L231 Difference]: Finished difference. Result has 173 places, 144 transitions, 1291 flow [2024-06-14 11:20:02,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1225, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1291, PETRI_PLACES=173, PETRI_TRANSITIONS=144} [2024-06-14 11:20:02,989 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 141 predicate places. [2024-06-14 11:20:02,990 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 144 transitions, 1291 flow [2024-06-14 11:20:02,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:02,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:02,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:02,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-14 11:20:02,990 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:02,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:02,990 INFO L85 PathProgramCache]: Analyzing trace with hash -2007668939, now seen corresponding path program 3 times [2024-06-14 11:20:02,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:02,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613554730] [2024-06-14 11:20:02,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:02,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:04,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:04,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:04,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613554730] [2024-06-14 11:20:04,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613554730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:04,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:04,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:20:04,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883664554] [2024-06-14 11:20:04,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:04,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:20:04,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:04,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:20:04,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:20:04,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:04,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 144 transitions, 1291 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:04,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:04,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:04,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:04,997 INFO L124 PetriNetUnfolderBase]: 453/806 cut-off events. [2024-06-14 11:20:04,998 INFO L125 PetriNetUnfolderBase]: For 45228/45228 co-relation queries the response was YES. [2024-06-14 11:20:05,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4876 conditions, 806 events. 453/806 cut-off events. For 45228/45228 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3576 event pairs, 91 based on Foata normal form. 2/807 useless extension candidates. Maximal degree in co-relation 4789. Up to 703 conditions per place. [2024-06-14 11:20:05,007 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 140 selfloop transitions, 21 changer transitions 0/163 dead transitions. [2024-06-14 11:20:05,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 163 transitions, 1677 flow [2024-06-14 11:20:05,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:20:05,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:20:05,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-14 11:20:05,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 11:20:05,008 INFO L175 Difference]: Start difference. First operand has 173 places, 144 transitions, 1291 flow. Second operand 9 states and 99 transitions. [2024-06-14 11:20:05,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 163 transitions, 1677 flow [2024-06-14 11:20:05,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 163 transitions, 1621 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-14 11:20:05,109 INFO L231 Difference]: Finished difference. Result has 175 places, 145 transitions, 1299 flow [2024-06-14 11:20:05,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1237, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1299, PETRI_PLACES=175, PETRI_TRANSITIONS=145} [2024-06-14 11:20:05,109 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 143 predicate places. [2024-06-14 11:20:05,109 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 145 transitions, 1299 flow [2024-06-14 11:20:05,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:05,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:05,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:05,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-14 11:20:05,110 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:05,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:05,110 INFO L85 PathProgramCache]: Analyzing trace with hash -969235909, now seen corresponding path program 4 times [2024-06-14 11:20:05,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:05,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775199236] [2024-06-14 11:20:05,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:05,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:05,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:06,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:06,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:06,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775199236] [2024-06-14 11:20:06,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775199236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:06,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:06,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:20:06,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344742870] [2024-06-14 11:20:06,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:06,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:20:06,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:06,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:20:06,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:20:06,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:06,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 145 transitions, 1299 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:06,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:06,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:06,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:06,583 INFO L124 PetriNetUnfolderBase]: 457/814 cut-off events. [2024-06-14 11:20:06,583 INFO L125 PetriNetUnfolderBase]: For 45684/45684 co-relation queries the response was YES. [2024-06-14 11:20:06,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4901 conditions, 814 events. 457/814 cut-off events. For 45684/45684 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3636 event pairs, 89 based on Foata normal form. 2/815 useless extension candidates. Maximal degree in co-relation 4813. Up to 697 conditions per place. [2024-06-14 11:20:06,589 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 140 selfloop transitions, 22 changer transitions 0/164 dead transitions. [2024-06-14 11:20:06,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 164 transitions, 1687 flow [2024-06-14 11:20:06,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:20:06,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:20:06,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-14 11:20:06,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3367003367003367 [2024-06-14 11:20:06,590 INFO L175 Difference]: Start difference. First operand has 175 places, 145 transitions, 1299 flow. Second operand 9 states and 100 transitions. [2024-06-14 11:20:06,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 164 transitions, 1687 flow [2024-06-14 11:20:06,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 164 transitions, 1635 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-14 11:20:06,681 INFO L231 Difference]: Finished difference. Result has 177 places, 146 transitions, 1313 flow [2024-06-14 11:20:06,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1247, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1313, PETRI_PLACES=177, PETRI_TRANSITIONS=146} [2024-06-14 11:20:06,682 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 145 predicate places. [2024-06-14 11:20:06,682 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 146 transitions, 1313 flow [2024-06-14 11:20:06,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:06,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:06,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:06,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-14 11:20:06,683 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:06,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:06,683 INFO L85 PathProgramCache]: Analyzing trace with hash -965507167, now seen corresponding path program 1 times [2024-06-14 11:20:06,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:06,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054383819] [2024-06-14 11:20:06,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:06,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:06,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:07,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:07,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:07,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054383819] [2024-06-14 11:20:07,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054383819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:07,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:07,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:20:07,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518414914] [2024-06-14 11:20:07,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:07,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:20:07,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:07,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:20:07,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:20:07,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:07,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 146 transitions, 1313 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:07,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:07,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:07,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:08,310 INFO L124 PetriNetUnfolderBase]: 463/824 cut-off events. [2024-06-14 11:20:08,311 INFO L125 PetriNetUnfolderBase]: For 47236/47236 co-relation queries the response was YES. [2024-06-14 11:20:08,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4983 conditions, 824 events. 463/824 cut-off events. For 47236/47236 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3698 event pairs, 92 based on Foata normal form. 2/825 useless extension candidates. Maximal degree in co-relation 4894. Up to 711 conditions per place. [2024-06-14 11:20:08,316 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 142 selfloop transitions, 24 changer transitions 0/168 dead transitions. [2024-06-14 11:20:08,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 168 transitions, 1731 flow [2024-06-14 11:20:08,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:20:08,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:20:08,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-14 11:20:08,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3303030303030303 [2024-06-14 11:20:08,317 INFO L175 Difference]: Start difference. First operand has 177 places, 146 transitions, 1313 flow. Second operand 10 states and 109 transitions. [2024-06-14 11:20:08,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 168 transitions, 1731 flow [2024-06-14 11:20:08,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 168 transitions, 1675 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-14 11:20:08,431 INFO L231 Difference]: Finished difference. Result has 180 places, 148 transitions, 1348 flow [2024-06-14 11:20:08,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1257, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1348, PETRI_PLACES=180, PETRI_TRANSITIONS=148} [2024-06-14 11:20:08,431 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 148 predicate places. [2024-06-14 11:20:08,431 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 148 transitions, 1348 flow [2024-06-14 11:20:08,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:08,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:08,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:08,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-14 11:20:08,432 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:08,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:08,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1680884003, now seen corresponding path program 2 times [2024-06-14 11:20:08,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:08,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237502467] [2024-06-14 11:20:08,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:08,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:09,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:09,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:09,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237502467] [2024-06-14 11:20:09,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237502467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:09,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:09,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:20:09,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810268145] [2024-06-14 11:20:09,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:09,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:20:09,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:09,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:20:09,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:20:09,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:09,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 148 transitions, 1348 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:09,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:09,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:09,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:10,234 INFO L124 PetriNetUnfolderBase]: 469/833 cut-off events. [2024-06-14 11:20:10,234 INFO L125 PetriNetUnfolderBase]: For 48776/48776 co-relation queries the response was YES. [2024-06-14 11:20:10,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5088 conditions, 833 events. 469/833 cut-off events. For 48776/48776 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3736 event pairs, 80 based on Foata normal form. 2/834 useless extension candidates. Maximal degree in co-relation 4998. Up to 638 conditions per place. [2024-06-14 11:20:10,241 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 127 selfloop transitions, 42 changer transitions 0/171 dead transitions. [2024-06-14 11:20:10,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 171 transitions, 1778 flow [2024-06-14 11:20:10,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:20:10,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:20:10,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-14 11:20:10,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-06-14 11:20:10,242 INFO L175 Difference]: Start difference. First operand has 180 places, 148 transitions, 1348 flow. Second operand 10 states and 114 transitions. [2024-06-14 11:20:10,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 171 transitions, 1778 flow [2024-06-14 11:20:10,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 171 transitions, 1703 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-14 11:20:10,361 INFO L231 Difference]: Finished difference. Result has 182 places, 150 transitions, 1404 flow [2024-06-14 11:20:10,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1273, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1404, PETRI_PLACES=182, PETRI_TRANSITIONS=150} [2024-06-14 11:20:10,361 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 150 predicate places. [2024-06-14 11:20:10,362 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 150 transitions, 1404 flow [2024-06-14 11:20:10,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:10,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:10,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:10,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-14 11:20:10,362 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:10,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:10,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1680876284, now seen corresponding path program 1 times [2024-06-14 11:20:10,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:10,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683170026] [2024-06-14 11:20:10,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:10,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:10,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:11,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:11,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:11,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683170026] [2024-06-14 11:20:11,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683170026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:11,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:11,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:20:11,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376127279] [2024-06-14 11:20:11,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:11,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:20:11,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:11,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:20:11,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:20:11,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:11,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 150 transitions, 1404 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:11,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:11,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:11,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:12,126 INFO L124 PetriNetUnfolderBase]: 467/831 cut-off events. [2024-06-14 11:20:12,126 INFO L125 PetriNetUnfolderBase]: For 47310/47310 co-relation queries the response was YES. [2024-06-14 11:20:12,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5068 conditions, 831 events. 467/831 cut-off events. For 47310/47310 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3723 event pairs, 100 based on Foata normal form. 1/831 useless extension candidates. Maximal degree in co-relation 4977. Up to 736 conditions per place. [2024-06-14 11:20:12,133 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 136 selfloop transitions, 30 changer transitions 0/168 dead transitions. [2024-06-14 11:20:12,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 168 transitions, 1792 flow [2024-06-14 11:20:12,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:20:12,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:20:12,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-14 11:20:12,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3212121212121212 [2024-06-14 11:20:12,134 INFO L175 Difference]: Start difference. First operand has 182 places, 150 transitions, 1404 flow. Second operand 10 states and 106 transitions. [2024-06-14 11:20:12,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 168 transitions, 1792 flow [2024-06-14 11:20:12,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 168 transitions, 1671 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-14 11:20:12,250 INFO L231 Difference]: Finished difference. Result has 184 places, 150 transitions, 1351 flow [2024-06-14 11:20:12,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1283, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1351, PETRI_PLACES=184, PETRI_TRANSITIONS=150} [2024-06-14 11:20:12,250 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 152 predicate places. [2024-06-14 11:20:12,251 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 150 transitions, 1351 flow [2024-06-14 11:20:12,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:12,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:12,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:12,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-14 11:20:12,251 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:12,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:12,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1681091765, now seen corresponding path program 5 times [2024-06-14 11:20:12,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:12,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120075430] [2024-06-14 11:20:12,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:12,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:13,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:13,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:13,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120075430] [2024-06-14 11:20:13,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120075430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:13,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:13,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:20:13,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925786691] [2024-06-14 11:20:13,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:13,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:20:13,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:13,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:20:13,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:20:13,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:13,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 150 transitions, 1351 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:13,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:13,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:13,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:14,093 INFO L124 PetriNetUnfolderBase]: 471/838 cut-off events. [2024-06-14 11:20:14,093 INFO L125 PetriNetUnfolderBase]: For 50516/50516 co-relation queries the response was YES. [2024-06-14 11:20:14,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5051 conditions, 838 events. 471/838 cut-off events. For 50516/50516 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3789 event pairs, 80 based on Foata normal form. 2/839 useless extension candidates. Maximal degree in co-relation 4959. Up to 688 conditions per place. [2024-06-14 11:20:14,102 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 136 selfloop transitions, 31 changer transitions 0/169 dead transitions. [2024-06-14 11:20:14,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 169 transitions, 1749 flow [2024-06-14 11:20:14,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:20:14,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:20:14,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-14 11:20:14,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3434343434343434 [2024-06-14 11:20:14,106 INFO L175 Difference]: Start difference. First operand has 184 places, 150 transitions, 1351 flow. Second operand 9 states and 102 transitions. [2024-06-14 11:20:14,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 169 transitions, 1749 flow [2024-06-14 11:20:14,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 169 transitions, 1558 flow, removed 14 selfloop flow, removed 12 redundant places. [2024-06-14 11:20:14,241 INFO L231 Difference]: Finished difference. Result has 181 places, 151 transitions, 1246 flow [2024-06-14 11:20:14,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1160, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1246, PETRI_PLACES=181, PETRI_TRANSITIONS=151} [2024-06-14 11:20:14,242 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 149 predicate places. [2024-06-14 11:20:14,242 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 151 transitions, 1246 flow [2024-06-14 11:20:14,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:14,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:14,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:14,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-14 11:20:14,243 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:14,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:14,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1705032321, now seen corresponding path program 6 times [2024-06-14 11:20:14,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:14,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707143775] [2024-06-14 11:20:14,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:14,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:14,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:15,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:15,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:15,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707143775] [2024-06-14 11:20:15,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707143775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:15,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:15,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:20:15,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255831580] [2024-06-14 11:20:15,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:15,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:20:15,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:15,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:20:15,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:20:15,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:15,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 151 transitions, 1246 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:15,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:15,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:15,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:16,169 INFO L124 PetriNetUnfolderBase]: 475/846 cut-off events. [2024-06-14 11:20:16,169 INFO L125 PetriNetUnfolderBase]: For 50664/50664 co-relation queries the response was YES. [2024-06-14 11:20:16,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5022 conditions, 846 events. 475/846 cut-off events. For 50664/50664 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3834 event pairs, 84 based on Foata normal form. 2/847 useless extension candidates. Maximal degree in co-relation 4930. Up to 696 conditions per place. [2024-06-14 11:20:16,176 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 137 selfloop transitions, 30 changer transitions 0/169 dead transitions. [2024-06-14 11:20:16,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 169 transitions, 1642 flow [2024-06-14 11:20:16,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:20:16,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:20:16,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-14 11:20:16,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3434343434343434 [2024-06-14 11:20:16,177 INFO L175 Difference]: Start difference. First operand has 181 places, 151 transitions, 1246 flow. Second operand 9 states and 102 transitions. [2024-06-14 11:20:16,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 169 transitions, 1642 flow [2024-06-14 11:20:16,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 169 transitions, 1566 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-14 11:20:16,282 INFO L231 Difference]: Finished difference. Result has 183 places, 152 transitions, 1256 flow [2024-06-14 11:20:16,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1170, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1256, PETRI_PLACES=183, PETRI_TRANSITIONS=152} [2024-06-14 11:20:16,283 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 151 predicate places. [2024-06-14 11:20:16,283 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 152 transitions, 1256 flow [2024-06-14 11:20:16,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:16,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:16,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:16,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-14 11:20:16,284 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:16,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:16,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1686448193, now seen corresponding path program 3 times [2024-06-14 11:20:16,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:16,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724381417] [2024-06-14 11:20:16,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:16,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:16,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:17,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:17,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:17,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724381417] [2024-06-14 11:20:17,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724381417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:17,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:17,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:20:17,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802717773] [2024-06-14 11:20:17,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:17,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:20:17,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:17,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:20:17,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:20:17,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:17,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 152 transitions, 1256 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:17,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:17,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:17,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:18,351 INFO L124 PetriNetUnfolderBase]: 481/856 cut-off events. [2024-06-14 11:20:18,351 INFO L125 PetriNetUnfolderBase]: For 52379/52379 co-relation queries the response was YES. [2024-06-14 11:20:18,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5097 conditions, 856 events. 481/856 cut-off events. For 52379/52379 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3884 event pairs, 87 based on Foata normal form. 2/857 useless extension candidates. Maximal degree in co-relation 5004. Up to 661 conditions per place. [2024-06-14 11:20:18,357 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 132 selfloop transitions, 39 changer transitions 0/173 dead transitions. [2024-06-14 11:20:18,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 173 transitions, 1686 flow [2024-06-14 11:20:18,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:20:18,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:20:18,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-14 11:20:18,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-06-14 11:20:18,358 INFO L175 Difference]: Start difference. First operand has 183 places, 152 transitions, 1256 flow. Second operand 10 states and 114 transitions. [2024-06-14 11:20:18,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 173 transitions, 1686 flow [2024-06-14 11:20:18,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 173 transitions, 1610 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-14 11:20:18,470 INFO L231 Difference]: Finished difference. Result has 186 places, 154 transitions, 1309 flow [2024-06-14 11:20:18,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1180, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1309, PETRI_PLACES=186, PETRI_TRANSITIONS=154} [2024-06-14 11:20:18,471 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 154 predicate places. [2024-06-14 11:20:18,471 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 154 transitions, 1309 flow [2024-06-14 11:20:18,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:18,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:18,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:18,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-14 11:20:18,471 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:18,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:18,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1680876563, now seen corresponding path program 4 times [2024-06-14 11:20:18,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:18,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135287137] [2024-06-14 11:20:18,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:18,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:18,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:19,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:19,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:19,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135287137] [2024-06-14 11:20:19,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135287137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:19,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:19,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:20:19,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515808099] [2024-06-14 11:20:19,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:19,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:20:19,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:19,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:20:19,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:20:19,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:19,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 154 transitions, 1309 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:19,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:19,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:19,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:20,382 INFO L124 PetriNetUnfolderBase]: 497/882 cut-off events. [2024-06-14 11:20:20,382 INFO L125 PetriNetUnfolderBase]: For 58586/58586 co-relation queries the response was YES. [2024-06-14 11:20:20,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5475 conditions, 882 events. 497/882 cut-off events. For 58586/58586 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4038 event pairs, 81 based on Foata normal form. 2/883 useless extension candidates. Maximal degree in co-relation 5381. Up to 641 conditions per place. [2024-06-14 11:20:20,389 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 127 selfloop transitions, 52 changer transitions 0/181 dead transitions. [2024-06-14 11:20:20,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 181 transitions, 1947 flow [2024-06-14 11:20:20,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:20:20,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:20:20,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-14 11:20:20,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35454545454545455 [2024-06-14 11:20:20,390 INFO L175 Difference]: Start difference. First operand has 186 places, 154 transitions, 1309 flow. Second operand 10 states and 117 transitions. [2024-06-14 11:20:20,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 181 transitions, 1947 flow [2024-06-14 11:20:20,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 181 transitions, 1834 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-14 11:20:20,494 INFO L231 Difference]: Finished difference. Result has 188 places, 158 transitions, 1402 flow [2024-06-14 11:20:20,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1196, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1402, PETRI_PLACES=188, PETRI_TRANSITIONS=158} [2024-06-14 11:20:20,494 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 156 predicate places. [2024-06-14 11:20:20,494 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 158 transitions, 1402 flow [2024-06-14 11:20:20,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:20,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:20,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:20,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-14 11:20:20,495 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:20,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:20,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1686602015, now seen corresponding path program 7 times [2024-06-14 11:20:20,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:20,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666786453] [2024-06-14 11:20:20,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:20,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:20,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:21,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:21,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:21,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666786453] [2024-06-14 11:20:21,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666786453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:21,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:21,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:20:21,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186543263] [2024-06-14 11:20:21,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:21,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:20:21,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:21,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:20:21,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:20:21,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:21,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 158 transitions, 1402 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:21,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:21,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:21,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:22,236 INFO L124 PetriNetUnfolderBase]: 501/890 cut-off events. [2024-06-14 11:20:22,236 INFO L125 PetriNetUnfolderBase]: For 60614/60614 co-relation queries the response was YES. [2024-06-14 11:20:22,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5585 conditions, 890 events. 501/890 cut-off events. For 60614/60614 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4087 event pairs, 85 based on Foata normal form. 2/891 useless extension candidates. Maximal degree in co-relation 5490. Up to 720 conditions per place. [2024-06-14 11:20:22,243 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 142 selfloop transitions, 32 changer transitions 0/176 dead transitions. [2024-06-14 11:20:22,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 176 transitions, 1814 flow [2024-06-14 11:20:22,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:20:22,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:20:22,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-14 11:20:22,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3434343434343434 [2024-06-14 11:20:22,244 INFO L175 Difference]: Start difference. First operand has 188 places, 158 transitions, 1402 flow. Second operand 9 states and 102 transitions. [2024-06-14 11:20:22,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 176 transitions, 1814 flow [2024-06-14 11:20:22,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 176 transitions, 1710 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-14 11:20:22,374 INFO L231 Difference]: Finished difference. Result has 191 places, 159 transitions, 1390 flow [2024-06-14 11:20:22,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1298, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1390, PETRI_PLACES=191, PETRI_TRANSITIONS=159} [2024-06-14 11:20:22,375 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 159 predicate places. [2024-06-14 11:20:22,375 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 159 transitions, 1390 flow [2024-06-14 11:20:22,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:22,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:22,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:22,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-14 11:20:22,375 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:22,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:22,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1681085813, now seen corresponding path program 5 times [2024-06-14 11:20:22,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:22,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840433671] [2024-06-14 11:20:22,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:22,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:22,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:23,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:23,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:23,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840433671] [2024-06-14 11:20:23,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840433671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:23,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:23,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:20:23,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143325199] [2024-06-14 11:20:23,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:23,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:20:23,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:23,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:20:23,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:20:23,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:23,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 159 transitions, 1390 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:23,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:23,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:23,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:24,236 INFO L124 PetriNetUnfolderBase]: 497/884 cut-off events. [2024-06-14 11:20:24,236 INFO L125 PetriNetUnfolderBase]: For 57792/57792 co-relation queries the response was YES. [2024-06-14 11:20:24,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5408 conditions, 884 events. 497/884 cut-off events. For 57792/57792 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4083 event pairs, 81 based on Foata normal form. 2/885 useless extension candidates. Maximal degree in co-relation 5311. Up to 689 conditions per place. [2024-06-14 11:20:24,243 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 137 selfloop transitions, 40 changer transitions 0/179 dead transitions. [2024-06-14 11:20:24,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 179 transitions, 1794 flow [2024-06-14 11:20:24,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:20:24,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:20:24,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-14 11:20:24,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-06-14 11:20:24,244 INFO L175 Difference]: Start difference. First operand has 191 places, 159 transitions, 1390 flow. Second operand 10 states and 114 transitions. [2024-06-14 11:20:24,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 179 transitions, 1794 flow [2024-06-14 11:20:24,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 179 transitions, 1692 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-14 11:20:24,394 INFO L231 Difference]: Finished difference. Result has 194 places, 159 transitions, 1373 flow [2024-06-14 11:20:24,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1288, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1373, PETRI_PLACES=194, PETRI_TRANSITIONS=159} [2024-06-14 11:20:24,394 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 162 predicate places. [2024-06-14 11:20:24,394 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 159 transitions, 1373 flow [2024-06-14 11:20:24,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:24,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:24,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:24,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-14 11:20:24,395 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:24,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:24,395 INFO L85 PathProgramCache]: Analyzing trace with hash 194842677, now seen corresponding path program 1 times [2024-06-14 11:20:24,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:24,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198930832] [2024-06-14 11:20:24,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:24,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:24,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:25,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:25,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:25,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198930832] [2024-06-14 11:20:25,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198930832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:25,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:25,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:20:25,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703392246] [2024-06-14 11:20:25,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:25,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:20:25,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:25,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:20:25,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:20:25,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:25,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 159 transitions, 1373 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:25,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:25,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:25,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:25,874 INFO L124 PetriNetUnfolderBase]: 505/902 cut-off events. [2024-06-14 11:20:25,874 INFO L125 PetriNetUnfolderBase]: For 63850/63853 co-relation queries the response was YES. [2024-06-14 11:20:25,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5465 conditions, 902 events. 505/902 cut-off events. For 63850/63853 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4181 event pairs, 106 based on Foata normal form. 6/905 useless extension candidates. Maximal degree in co-relation 5367. Up to 807 conditions per place. [2024-06-14 11:20:25,881 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 158 selfloop transitions, 22 changer transitions 0/182 dead transitions. [2024-06-14 11:20:25,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 182 transitions, 1821 flow [2024-06-14 11:20:25,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:20:25,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:20:25,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-14 11:20:25,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3168044077134986 [2024-06-14 11:20:25,882 INFO L175 Difference]: Start difference. First operand has 194 places, 159 transitions, 1373 flow. Second operand 11 states and 115 transitions. [2024-06-14 11:20:25,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 182 transitions, 1821 flow [2024-06-14 11:20:26,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 182 transitions, 1710 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-14 11:20:26,018 INFO L231 Difference]: Finished difference. Result has 196 places, 160 transitions, 1330 flow [2024-06-14 11:20:26,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1262, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1330, PETRI_PLACES=196, PETRI_TRANSITIONS=160} [2024-06-14 11:20:26,019 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 164 predicate places. [2024-06-14 11:20:26,019 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 160 transitions, 1330 flow [2024-06-14 11:20:26,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:26,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:26,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:26,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-14 11:20:26,019 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:26,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:26,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1078518573, now seen corresponding path program 8 times [2024-06-14 11:20:26,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:26,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017646480] [2024-06-14 11:20:26,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:26,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:26,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:27,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:27,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:27,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017646480] [2024-06-14 11:20:27,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017646480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:27,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:27,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:20:27,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62197627] [2024-06-14 11:20:27,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:27,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:20:27,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:27,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:20:27,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:20:27,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:27,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 160 transitions, 1330 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:27,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:27,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:27,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:28,052 INFO L124 PetriNetUnfolderBase]: 509/910 cut-off events. [2024-06-14 11:20:28,052 INFO L125 PetriNetUnfolderBase]: For 61267/61270 co-relation queries the response was YES. [2024-06-14 11:20:28,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5471 conditions, 910 events. 509/910 cut-off events. For 61267/61270 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4247 event pairs, 77 based on Foata normal form. 2/906 useless extension candidates. Maximal degree in co-relation 5372. Up to 706 conditions per place. [2024-06-14 11:20:28,060 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 138 selfloop transitions, 39 changer transitions 0/179 dead transitions. [2024-06-14 11:20:28,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 179 transitions, 1754 flow [2024-06-14 11:20:28,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:20:28,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:20:28,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-14 11:20:28,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3569023569023569 [2024-06-14 11:20:28,062 INFO L175 Difference]: Start difference. First operand has 196 places, 160 transitions, 1330 flow. Second operand 9 states and 106 transitions. [2024-06-14 11:20:28,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 179 transitions, 1754 flow [2024-06-14 11:20:28,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 179 transitions, 1696 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-14 11:20:28,186 INFO L231 Difference]: Finished difference. Result has 196 places, 161 transitions, 1380 flow [2024-06-14 11:20:28,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1272, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1380, PETRI_PLACES=196, PETRI_TRANSITIONS=161} [2024-06-14 11:20:28,187 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 164 predicate places. [2024-06-14 11:20:28,187 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 161 transitions, 1380 flow [2024-06-14 11:20:28,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:28,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:28,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:28,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-14 11:20:28,188 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:28,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:28,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1078733775, now seen corresponding path program 6 times [2024-06-14 11:20:28,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:28,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490646883] [2024-06-14 11:20:28,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:28,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:28,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:29,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:29,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:29,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490646883] [2024-06-14 11:20:29,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490646883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:29,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:29,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:20:29,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724350895] [2024-06-14 11:20:29,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:29,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:20:29,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:29,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:20:29,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:20:29,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:29,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 161 transitions, 1380 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:29,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:29,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:29,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:30,093 INFO L124 PetriNetUnfolderBase]: 525/936 cut-off events. [2024-06-14 11:20:30,093 INFO L125 PetriNetUnfolderBase]: For 68479/68482 co-relation queries the response was YES. [2024-06-14 11:20:30,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5882 conditions, 936 events. 525/936 cut-off events. For 68479/68482 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4371 event pairs, 81 based on Foata normal form. 2/932 useless extension candidates. Maximal degree in co-relation 5782. Up to 595 conditions per place. [2024-06-14 11:20:30,100 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 124 selfloop transitions, 62 changer transitions 0/188 dead transitions. [2024-06-14 11:20:30,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 188 transitions, 2050 flow [2024-06-14 11:20:30,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:20:30,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:20:30,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-14 11:20:30,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2024-06-14 11:20:30,101 INFO L175 Difference]: Start difference. First operand has 196 places, 161 transitions, 1380 flow. Second operand 10 states and 123 transitions. [2024-06-14 11:20:30,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 188 transitions, 2050 flow [2024-06-14 11:20:30,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 188 transitions, 1952 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-14 11:20:30,249 INFO L231 Difference]: Finished difference. Result has 199 places, 165 transitions, 1515 flow [2024-06-14 11:20:30,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1282, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1515, PETRI_PLACES=199, PETRI_TRANSITIONS=165} [2024-06-14 11:20:30,249 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 167 predicate places. [2024-06-14 11:20:30,249 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 165 transitions, 1515 flow [2024-06-14 11:20:30,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:30,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:30,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:30,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-14 11:20:30,250 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:30,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:30,250 INFO L85 PathProgramCache]: Analyzing trace with hash 931142359, now seen corresponding path program 7 times [2024-06-14 11:20:30,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:30,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709695820] [2024-06-14 11:20:30,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:30,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:30,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:31,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:31,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:31,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709695820] [2024-06-14 11:20:31,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709695820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:31,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:31,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:20:31,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92178617] [2024-06-14 11:20:31,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:31,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:20:31,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:31,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:20:31,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:20:31,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:31,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 165 transitions, 1515 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:31,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:31,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:31,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:32,221 INFO L124 PetriNetUnfolderBase]: 541/962 cut-off events. [2024-06-14 11:20:32,221 INFO L125 PetriNetUnfolderBase]: For 76106/76109 co-relation queries the response was YES. [2024-06-14 11:20:32,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6343 conditions, 962 events. 541/962 cut-off events. For 76106/76109 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4533 event pairs, 71 based on Foata normal form. 2/958 useless extension candidates. Maximal degree in co-relation 6242. Up to 625 conditions per place. [2024-06-14 11:20:32,231 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 125 selfloop transitions, 65 changer transitions 0/192 dead transitions. [2024-06-14 11:20:32,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 192 transitions, 2203 flow [2024-06-14 11:20:32,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:20:32,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:20:32,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-14 11:20:32,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3696969696969697 [2024-06-14 11:20:32,233 INFO L175 Difference]: Start difference. First operand has 199 places, 165 transitions, 1515 flow. Second operand 10 states and 122 transitions. [2024-06-14 11:20:32,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 192 transitions, 2203 flow [2024-06-14 11:20:32,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 192 transitions, 2074 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-14 11:20:32,386 INFO L231 Difference]: Finished difference. Result has 203 places, 169 transitions, 1633 flow [2024-06-14 11:20:32,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1386, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1633, PETRI_PLACES=203, PETRI_TRANSITIONS=169} [2024-06-14 11:20:32,386 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 171 predicate places. [2024-06-14 11:20:32,386 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 169 transitions, 1633 flow [2024-06-14 11:20:32,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:32,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:32,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:32,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-14 11:20:32,387 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:32,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:32,387 INFO L85 PathProgramCache]: Analyzing trace with hash 931134919, now seen corresponding path program 8 times [2024-06-14 11:20:32,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:32,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152536300] [2024-06-14 11:20:32,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:32,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:32,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:33,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:33,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:33,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152536300] [2024-06-14 11:20:33,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152536300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:33,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:33,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:20:33,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174011338] [2024-06-14 11:20:33,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:33,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:20:33,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:33,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:20:33,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:20:33,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:33,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 169 transitions, 1633 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:33,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:33,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:33,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:34,222 INFO L124 PetriNetUnfolderBase]: 547/972 cut-off events. [2024-06-14 11:20:34,222 INFO L125 PetriNetUnfolderBase]: For 78232/78235 co-relation queries the response was YES. [2024-06-14 11:20:34,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6554 conditions, 972 events. 547/972 cut-off events. For 78232/78235 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4583 event pairs, 71 based on Foata normal form. 2/968 useless extension candidates. Maximal degree in co-relation 6451. Up to 656 conditions per place. [2024-06-14 11:20:34,232 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 128 selfloop transitions, 62 changer transitions 0/192 dead transitions. [2024-06-14 11:20:34,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 192 transitions, 2125 flow [2024-06-14 11:20:34,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:20:34,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:20:34,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-14 11:20:34,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3606060606060606 [2024-06-14 11:20:34,234 INFO L175 Difference]: Start difference. First operand has 203 places, 169 transitions, 1633 flow. Second operand 10 states and 119 transitions. [2024-06-14 11:20:34,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 192 transitions, 2125 flow [2024-06-14 11:20:34,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 192 transitions, 1968 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-14 11:20:34,397 INFO L231 Difference]: Finished difference. Result has 207 places, 171 transitions, 1667 flow [2024-06-14 11:20:34,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1490, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1667, PETRI_PLACES=207, PETRI_TRANSITIONS=171} [2024-06-14 11:20:34,398 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 175 predicate places. [2024-06-14 11:20:34,398 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 171 transitions, 1667 flow [2024-06-14 11:20:34,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:34,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:34,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:34,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-14 11:20:34,399 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:34,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:34,399 INFO L85 PathProgramCache]: Analyzing trace with hash -946658729, now seen corresponding path program 9 times [2024-06-14 11:20:34,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:34,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980808897] [2024-06-14 11:20:34,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:34,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:34,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:35,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:35,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:35,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980808897] [2024-06-14 11:20:35,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980808897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:35,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:35,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:20:35,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663337891] [2024-06-14 11:20:35,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:35,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:20:35,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:35,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:20:35,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:20:35,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:35,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 171 transitions, 1667 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:35,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:35,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:35,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:36,391 INFO L124 PetriNetUnfolderBase]: 553/982 cut-off events. [2024-06-14 11:20:36,391 INFO L125 PetriNetUnfolderBase]: For 79712/79715 co-relation queries the response was YES. [2024-06-14 11:20:36,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6672 conditions, 982 events. 553/982 cut-off events. For 79712/79715 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4656 event pairs, 80 based on Foata normal form. 2/978 useless extension candidates. Maximal degree in co-relation 6567. Up to 666 conditions per place. [2024-06-14 11:20:36,397 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 133 selfloop transitions, 59 changer transitions 0/194 dead transitions. [2024-06-14 11:20:36,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 194 transitions, 2149 flow [2024-06-14 11:20:36,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:20:36,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:20:36,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-14 11:20:36,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-14 11:20:36,398 INFO L175 Difference]: Start difference. First operand has 207 places, 171 transitions, 1667 flow. Second operand 10 states and 120 transitions. [2024-06-14 11:20:36,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 194 transitions, 2149 flow [2024-06-14 11:20:36,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 194 transitions, 1992 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-14 11:20:36,568 INFO L231 Difference]: Finished difference. Result has 209 places, 173 transitions, 1681 flow [2024-06-14 11:20:36,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1510, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1681, PETRI_PLACES=209, PETRI_TRANSITIONS=173} [2024-06-14 11:20:36,568 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 177 predicate places. [2024-06-14 11:20:36,568 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 173 transitions, 1681 flow [2024-06-14 11:20:36,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:36,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:36,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:36,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-14 11:20:36,569 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:36,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:36,569 INFO L85 PathProgramCache]: Analyzing trace with hash -946860539, now seen corresponding path program 10 times [2024-06-14 11:20:36,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:36,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033983751] [2024-06-14 11:20:36,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:36,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:36,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:37,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:37,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:37,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033983751] [2024-06-14 11:20:37,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033983751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:37,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:37,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:20:37,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086092773] [2024-06-14 11:20:37,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:37,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:20:37,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:37,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:20:37,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:20:38,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:38,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 173 transitions, 1681 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:38,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:38,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:38,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:38,545 INFO L124 PetriNetUnfolderBase]: 559/992 cut-off events. [2024-06-14 11:20:38,545 INFO L125 PetriNetUnfolderBase]: For 82144/82147 co-relation queries the response was YES. [2024-06-14 11:20:38,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6742 conditions, 992 events. 559/992 cut-off events. For 82144/82147 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4714 event pairs, 81 based on Foata normal form. 2/988 useless extension candidates. Maximal degree in co-relation 6636. Up to 676 conditions per place. [2024-06-14 11:20:38,553 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 135 selfloop transitions, 58 changer transitions 0/195 dead transitions. [2024-06-14 11:20:38,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 195 transitions, 2165 flow [2024-06-14 11:20:38,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:20:38,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:20:38,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-14 11:20:38,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-14 11:20:38,554 INFO L175 Difference]: Start difference. First operand has 209 places, 173 transitions, 1681 flow. Second operand 10 states and 120 transitions. [2024-06-14 11:20:38,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 195 transitions, 2165 flow [2024-06-14 11:20:38,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 195 transitions, 2014 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-14 11:20:38,743 INFO L231 Difference]: Finished difference. Result has 211 places, 175 transitions, 1703 flow [2024-06-14 11:20:38,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1530, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1703, PETRI_PLACES=211, PETRI_TRANSITIONS=175} [2024-06-14 11:20:38,744 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 179 predicate places. [2024-06-14 11:20:38,744 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 175 transitions, 1703 flow [2024-06-14 11:20:38,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:38,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:38,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:38,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-14 11:20:38,744 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:38,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:38,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1823101863, now seen corresponding path program 9 times [2024-06-14 11:20:38,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:38,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607465409] [2024-06-14 11:20:38,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:38,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:38,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:40,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:40,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:40,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607465409] [2024-06-14 11:20:40,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607465409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:40,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:40,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:20:40,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365906918] [2024-06-14 11:20:40,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:40,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:20:40,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:40,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:20:40,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:20:40,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:40,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 175 transitions, 1703 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:40,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:40,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:40,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:40,769 INFO L124 PetriNetUnfolderBase]: 563/1000 cut-off events. [2024-06-14 11:20:40,769 INFO L125 PetriNetUnfolderBase]: For 84518/84521 co-relation queries the response was YES. [2024-06-14 11:20:40,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6794 conditions, 1000 events. 563/1000 cut-off events. For 84518/84521 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4759 event pairs, 77 based on Foata normal form. 2/996 useless extension candidates. Maximal degree in co-relation 6687. Up to 796 conditions per place. [2024-06-14 11:20:40,777 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 148 selfloop transitions, 43 changer transitions 0/193 dead transitions. [2024-06-14 11:20:40,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 193 transitions, 2155 flow [2024-06-14 11:20:40,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:20:40,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:20:40,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-14 11:20:40,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3468013468013468 [2024-06-14 11:20:40,778 INFO L175 Difference]: Start difference. First operand has 211 places, 175 transitions, 1703 flow. Second operand 9 states and 103 transitions. [2024-06-14 11:20:40,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 193 transitions, 2155 flow [2024-06-14 11:20:40,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 193 transitions, 2002 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-14 11:20:40,948 INFO L231 Difference]: Finished difference. Result has 212 places, 176 transitions, 1668 flow [2024-06-14 11:20:40,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1550, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1668, PETRI_PLACES=212, PETRI_TRANSITIONS=176} [2024-06-14 11:20:40,948 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 180 predicate places. [2024-06-14 11:20:40,948 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 176 transitions, 1668 flow [2024-06-14 11:20:40,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:40,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:40,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:40,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-14 11:20:40,949 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:40,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:40,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1073012043, now seen corresponding path program 10 times [2024-06-14 11:20:40,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:40,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003554354] [2024-06-14 11:20:40,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:40,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:40,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:42,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:42,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:42,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003554354] [2024-06-14 11:20:42,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003554354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:42,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:42,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:20:42,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548298619] [2024-06-14 11:20:42,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:42,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:20:42,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:42,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:20:42,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:20:42,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:42,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 176 transitions, 1668 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:42,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:42,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:42,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:42,736 INFO L124 PetriNetUnfolderBase]: 567/1008 cut-off events. [2024-06-14 11:20:42,736 INFO L125 PetriNetUnfolderBase]: For 86686/86689 co-relation queries the response was YES. [2024-06-14 11:20:42,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6809 conditions, 1008 events. 567/1008 cut-off events. For 86686/86689 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4809 event pairs, 85 based on Foata normal form. 2/1004 useless extension candidates. Maximal degree in co-relation 6701. Up to 804 conditions per place. [2024-06-14 11:20:42,744 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 151 selfloop transitions, 40 changer transitions 0/193 dead transitions. [2024-06-14 11:20:42,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 193 transitions, 2118 flow [2024-06-14 11:20:42,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:20:42,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:20:42,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-14 11:20:42,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3468013468013468 [2024-06-14 11:20:42,745 INFO L175 Difference]: Start difference. First operand has 212 places, 176 transitions, 1668 flow. Second operand 9 states and 103 transitions. [2024-06-14 11:20:42,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 193 transitions, 2118 flow [2024-06-14 11:20:42,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 193 transitions, 2010 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-14 11:20:42,914 INFO L231 Difference]: Finished difference. Result has 214 places, 177 transitions, 1674 flow [2024-06-14 11:20:42,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1560, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1674, PETRI_PLACES=214, PETRI_TRANSITIONS=177} [2024-06-14 11:20:42,915 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 182 predicate places. [2024-06-14 11:20:42,915 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 177 transitions, 1674 flow [2024-06-14 11:20:42,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:42,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:42,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:42,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-14 11:20:42,916 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:42,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:42,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1073008323, now seen corresponding path program 11 times [2024-06-14 11:20:42,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:42,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862560793] [2024-06-14 11:20:42,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:42,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:42,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:44,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:44,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:44,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862560793] [2024-06-14 11:20:44,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862560793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:44,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:44,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:20:44,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455329600] [2024-06-14 11:20:44,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:44,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:20:44,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:44,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:20:44,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:20:44,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:44,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 177 transitions, 1674 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:44,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:44,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:44,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:44,533 INFO L124 PetriNetUnfolderBase]: 564/1003 cut-off events. [2024-06-14 11:20:44,534 INFO L125 PetriNetUnfolderBase]: For 82950/82953 co-relation queries the response was YES. [2024-06-14 11:20:44,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6598 conditions, 1003 events. 564/1003 cut-off events. For 82950/82953 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4789 event pairs, 84 based on Foata normal form. 2/999 useless extension candidates. Maximal degree in co-relation 6489. Up to 773 conditions per place. [2024-06-14 11:20:44,544 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 148 selfloop transitions, 43 changer transitions 0/193 dead transitions. [2024-06-14 11:20:44,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 193 transitions, 2096 flow [2024-06-14 11:20:44,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:20:44,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:20:44,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-14 11:20:44,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3468013468013468 [2024-06-14 11:20:44,545 INFO L175 Difference]: Start difference. First operand has 214 places, 177 transitions, 1674 flow. Second operand 9 states and 103 transitions. [2024-06-14 11:20:44,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 193 transitions, 2096 flow [2024-06-14 11:20:44,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 193 transitions, 1992 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-14 11:20:44,715 INFO L231 Difference]: Finished difference. Result has 216 places, 177 transitions, 1660 flow [2024-06-14 11:20:44,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1570, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1660, PETRI_PLACES=216, PETRI_TRANSITIONS=177} [2024-06-14 11:20:44,716 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 184 predicate places. [2024-06-14 11:20:44,716 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 177 transitions, 1660 flow [2024-06-14 11:20:44,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:44,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:44,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:44,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-14 11:20:44,716 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:44,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:44,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1073162145, now seen corresponding path program 11 times [2024-06-14 11:20:44,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:44,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975346728] [2024-06-14 11:20:44,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:44,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:44,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:46,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:46,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:46,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975346728] [2024-06-14 11:20:46,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975346728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:46,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:46,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:20:46,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615672132] [2024-06-14 11:20:46,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:46,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:20:46,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:46,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:20:46,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:20:46,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:46,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 177 transitions, 1660 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:46,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:46,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:46,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:46,724 INFO L124 PetriNetUnfolderBase]: 560/997 cut-off events. [2024-06-14 11:20:46,724 INFO L125 PetriNetUnfolderBase]: For 78657/78660 co-relation queries the response was YES. [2024-06-14 11:20:46,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6389 conditions, 997 events. 560/997 cut-off events. For 78657/78660 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4763 event pairs, 87 based on Foata normal form. 2/993 useless extension candidates. Maximal degree in co-relation 6279. Up to 681 conditions per place. [2024-06-14 11:20:46,732 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 132 selfloop transitions, 61 changer transitions 0/195 dead transitions. [2024-06-14 11:20:46,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 195 transitions, 2090 flow [2024-06-14 11:20:46,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:20:46,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:20:46,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-14 11:20:46,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-14 11:20:46,733 INFO L175 Difference]: Start difference. First operand has 216 places, 177 transitions, 1660 flow. Second operand 10 states and 116 transitions. [2024-06-14 11:20:46,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 195 transitions, 2090 flow [2024-06-14 11:20:46,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 195 transitions, 1910 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-14 11:20:46,945 INFO L231 Difference]: Finished difference. Result has 218 places, 177 transitions, 1607 flow [2024-06-14 11:20:46,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1480, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1607, PETRI_PLACES=218, PETRI_TRANSITIONS=177} [2024-06-14 11:20:46,946 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 186 predicate places. [2024-06-14 11:20:46,946 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 177 transitions, 1607 flow [2024-06-14 11:20:46,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:46,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:46,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:46,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-14 11:20:46,947 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:46,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:46,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1280092415, now seen corresponding path program 2 times [2024-06-14 11:20:46,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:46,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920192348] [2024-06-14 11:20:46,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:46,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:46,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:48,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:48,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:48,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920192348] [2024-06-14 11:20:48,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920192348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:48,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:48,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:20:48,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753072116] [2024-06-14 11:20:48,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:48,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:20:48,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:48,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:20:48,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:20:48,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:48,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 177 transitions, 1607 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:48,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:48,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:48,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:48,555 INFO L124 PetriNetUnfolderBase]: 568/1014 cut-off events. [2024-06-14 11:20:48,555 INFO L125 PetriNetUnfolderBase]: For 86471/86474 co-relation queries the response was YES. [2024-06-14 11:20:48,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6389 conditions, 1014 events. 568/1014 cut-off events. For 86471/86474 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4896 event pairs, 112 based on Foata normal form. 6/1015 useless extension candidates. Maximal degree in co-relation 6278. Up to 856 conditions per place. [2024-06-14 11:20:48,563 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 159 selfloop transitions, 37 changer transitions 0/198 dead transitions. [2024-06-14 11:20:48,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 198 transitions, 2081 flow [2024-06-14 11:20:48,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:20:48,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:20:48,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-14 11:20:48,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3278236914600551 [2024-06-14 11:20:48,565 INFO L175 Difference]: Start difference. First operand has 218 places, 177 transitions, 1607 flow. Second operand 11 states and 119 transitions. [2024-06-14 11:20:48,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 198 transitions, 2081 flow [2024-06-14 11:20:48,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 198 transitions, 1895 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-14 11:20:48,751 INFO L231 Difference]: Finished difference. Result has 218 places, 178 transitions, 1521 flow [2024-06-14 11:20:48,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1423, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1521, PETRI_PLACES=218, PETRI_TRANSITIONS=178} [2024-06-14 11:20:48,752 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 186 predicate places. [2024-06-14 11:20:48,752 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 178 transitions, 1521 flow [2024-06-14 11:20:48,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:48,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:48,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:48,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-14 11:20:48,752 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:48,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:48,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1083128655, now seen corresponding path program 12 times [2024-06-14 11:20:48,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:48,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574449588] [2024-06-14 11:20:48,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:48,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:48,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:50,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:50,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:50,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574449588] [2024-06-14 11:20:50,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574449588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:50,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:50,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:20:50,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101550569] [2024-06-14 11:20:50,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:50,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:20:50,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:50,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:20:50,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:20:50,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:50,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 178 transitions, 1521 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:50,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:50,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:50,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:50,673 INFO L124 PetriNetUnfolderBase]: 584/1039 cut-off events. [2024-06-14 11:20:50,673 INFO L125 PetriNetUnfolderBase]: For 89128/89131 co-relation queries the response was YES. [2024-06-14 11:20:50,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6598 conditions, 1039 events. 584/1039 cut-off events. For 89128/89131 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5019 event pairs, 68 based on Foata normal form. 2/1035 useless extension candidates. Maximal degree in co-relation 6488. Up to 706 conditions per place. [2024-06-14 11:20:50,681 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 130 selfloop transitions, 73 changer transitions 0/205 dead transitions. [2024-06-14 11:20:50,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 205 transitions, 2257 flow [2024-06-14 11:20:50,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:20:50,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:20:50,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-14 11:20:50,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-14 11:20:50,682 INFO L175 Difference]: Start difference. First operand has 218 places, 178 transitions, 1521 flow. Second operand 10 states and 121 transitions. [2024-06-14 11:20:50,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 205 transitions, 2257 flow [2024-06-14 11:20:50,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 205 transitions, 2169 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-14 11:20:50,889 INFO L231 Difference]: Finished difference. Result has 219 places, 182 transitions, 1700 flow [2024-06-14 11:20:50,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1433, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1700, PETRI_PLACES=219, PETRI_TRANSITIONS=182} [2024-06-14 11:20:50,890 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 187 predicate places. [2024-06-14 11:20:50,890 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 182 transitions, 1700 flow [2024-06-14 11:20:50,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:50,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:50,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:50,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-14 11:20:50,890 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:50,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:50,890 INFO L85 PathProgramCache]: Analyzing trace with hash -769169955, now seen corresponding path program 13 times [2024-06-14 11:20:50,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:50,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236357796] [2024-06-14 11:20:50,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:50,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:50,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:52,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:52,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:52,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236357796] [2024-06-14 11:20:52,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236357796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:52,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:52,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:20:52,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521043892] [2024-06-14 11:20:52,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:52,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:20:52,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:52,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:20:52,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:20:52,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:52,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 182 transitions, 1700 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:52,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:52,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:52,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:52,455 INFO L124 PetriNetUnfolderBase]: 596/1057 cut-off events. [2024-06-14 11:20:52,456 INFO L125 PetriNetUnfolderBase]: For 98303/98303 co-relation queries the response was YES. [2024-06-14 11:20:52,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6839 conditions, 1057 events. 596/1057 cut-off events. For 98303/98303 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5133 event pairs, 147 based on Foata normal form. 4/1060 useless extension candidates. Maximal degree in co-relation 6728. Up to 985 conditions per place. [2024-06-14 11:20:52,463 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 178 selfloop transitions, 22 changer transitions 0/202 dead transitions. [2024-06-14 11:20:52,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 202 transitions, 2400 flow [2024-06-14 11:20:52,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:20:52,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:20:52,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-14 11:20:52,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3242424242424242 [2024-06-14 11:20:52,464 INFO L175 Difference]: Start difference. First operand has 219 places, 182 transitions, 1700 flow. Second operand 10 states and 107 transitions. [2024-06-14 11:20:52,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 202 transitions, 2400 flow [2024-06-14 11:20:52,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 202 transitions, 2237 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-14 11:20:52,647 INFO L231 Difference]: Finished difference. Result has 223 places, 187 transitions, 1695 flow [2024-06-14 11:20:52,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1537, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1695, PETRI_PLACES=223, PETRI_TRANSITIONS=187} [2024-06-14 11:20:52,647 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 191 predicate places. [2024-06-14 11:20:52,647 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 187 transitions, 1695 flow [2024-06-14 11:20:52,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:52,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:52,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:52,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-14 11:20:52,648 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:52,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:52,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1083136095, now seen corresponding path program 14 times [2024-06-14 11:20:52,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:52,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938307385] [2024-06-14 11:20:52,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:52,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:52,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:54,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:54,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:54,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938307385] [2024-06-14 11:20:54,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938307385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:54,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:54,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:20:54,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244883786] [2024-06-14 11:20:54,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:54,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:20:54,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:54,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:20:54,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:20:54,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:54,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 187 transitions, 1695 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:54,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:54,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:54,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:54,556 INFO L124 PetriNetUnfolderBase]: 592/1053 cut-off events. [2024-06-14 11:20:54,556 INFO L125 PetriNetUnfolderBase]: For 86889/86892 co-relation queries the response was YES. [2024-06-14 11:20:54,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6564 conditions, 1053 events. 592/1053 cut-off events. For 86889/86892 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5111 event pairs, 68 based on Foata normal form. 2/1049 useless extension candidates. Maximal degree in co-relation 6451. Up to 737 conditions per place. [2024-06-14 11:20:54,565 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 135 selfloop transitions, 70 changer transitions 0/207 dead transitions. [2024-06-14 11:20:54,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 207 transitions, 2157 flow [2024-06-14 11:20:54,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:20:54,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:20:54,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-14 11:20:54,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-14 11:20:54,566 INFO L175 Difference]: Start difference. First operand has 223 places, 187 transitions, 1695 flow. Second operand 10 states and 116 transitions. [2024-06-14 11:20:54,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 207 transitions, 2157 flow [2024-06-14 11:20:54,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 207 transitions, 2034 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-06-14 11:20:54,806 INFO L231 Difference]: Finished difference. Result has 227 places, 187 transitions, 1717 flow [2024-06-14 11:20:54,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1572, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1717, PETRI_PLACES=227, PETRI_TRANSITIONS=187} [2024-06-14 11:20:54,806 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 195 predicate places. [2024-06-14 11:20:54,806 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 187 transitions, 1717 flow [2024-06-14 11:20:54,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:54,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:54,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:54,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-14 11:20:54,807 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:54,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:54,807 INFO L85 PathProgramCache]: Analyzing trace with hash 695290529, now seen corresponding path program 15 times [2024-06-14 11:20:54,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:54,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308327558] [2024-06-14 11:20:54,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:54,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:54,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:56,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:56,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:56,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308327558] [2024-06-14 11:20:56,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308327558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:56,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:56,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:20:56,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779070091] [2024-06-14 11:20:56,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:56,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:20:56,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:56,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:20:56,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:20:56,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:56,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 187 transitions, 1717 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:56,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:56,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:56,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:56,778 INFO L124 PetriNetUnfolderBase]: 588/1047 cut-off events. [2024-06-14 11:20:56,778 INFO L125 PetriNetUnfolderBase]: For 81316/81319 co-relation queries the response was YES. [2024-06-14 11:20:56,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6397 conditions, 1047 events. 588/1047 cut-off events. For 81316/81319 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5073 event pairs, 74 based on Foata normal form. 2/1043 useless extension candidates. Maximal degree in co-relation 6282. Up to 731 conditions per place. [2024-06-14 11:20:56,791 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 141 selfloop transitions, 63 changer transitions 0/206 dead transitions. [2024-06-14 11:20:56,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 206 transitions, 2173 flow [2024-06-14 11:20:56,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:20:56,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:20:56,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-14 11:20:56,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-14 11:20:56,792 INFO L175 Difference]: Start difference. First operand has 227 places, 187 transitions, 1717 flow. Second operand 10 states and 116 transitions. [2024-06-14 11:20:56,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 206 transitions, 2173 flow [2024-06-14 11:20:57,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 206 transitions, 1994 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-14 11:20:57,031 INFO L231 Difference]: Finished difference. Result has 228 places, 187 transitions, 1669 flow [2024-06-14 11:20:57,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1538, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1669, PETRI_PLACES=228, PETRI_TRANSITIONS=187} [2024-06-14 11:20:57,031 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 196 predicate places. [2024-06-14 11:20:57,031 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 187 transitions, 1669 flow [2024-06-14 11:20:57,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:57,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:57,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:57,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-14 11:20:57,032 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:57,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:57,032 INFO L85 PathProgramCache]: Analyzing trace with hash 938561589, now seen corresponding path program 3 times [2024-06-14 11:20:57,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:57,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829104629] [2024-06-14 11:20:57,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:57,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:57,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:58,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:58,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:58,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829104629] [2024-06-14 11:20:58,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829104629] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:58,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:58,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:20:58,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979601032] [2024-06-14 11:20:58,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:58,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:20:58,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:58,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:20:58,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:20:58,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:58,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 187 transitions, 1669 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:58,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:58,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:58,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:58,663 INFO L124 PetriNetUnfolderBase]: 596/1064 cut-off events. [2024-06-14 11:20:58,663 INFO L125 PetriNetUnfolderBase]: For 90169/90172 co-relation queries the response was YES. [2024-06-14 11:20:58,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6411 conditions, 1064 events. 596/1064 cut-off events. For 90169/90172 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5211 event pairs, 107 based on Foata normal form. 6/1065 useless extension candidates. Maximal degree in co-relation 6295. Up to 906 conditions per place. [2024-06-14 11:20:58,672 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 167 selfloop transitions, 39 changer transitions 0/208 dead transitions. [2024-06-14 11:20:58,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 208 transitions, 2163 flow [2024-06-14 11:20:58,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:20:58,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:20:58,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-14 11:20:58,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325068870523416 [2024-06-14 11:20:58,673 INFO L175 Difference]: Start difference. First operand has 228 places, 187 transitions, 1669 flow. Second operand 11 states and 118 transitions. [2024-06-14 11:20:58,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 208 transitions, 2163 flow [2024-06-14 11:20:58,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 208 transitions, 2025 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-14 11:20:58,907 INFO L231 Difference]: Finished difference. Result has 230 places, 188 transitions, 1635 flow [2024-06-14 11:20:58,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1531, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1635, PETRI_PLACES=230, PETRI_TRANSITIONS=188} [2024-06-14 11:20:58,907 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 198 predicate places. [2024-06-14 11:20:58,908 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 188 transitions, 1635 flow [2024-06-14 11:20:58,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:58,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:58,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:58,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-14 11:20:58,908 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:58,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:58,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1187912259, now seen corresponding path program 4 times [2024-06-14 11:20:58,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:58,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777731364] [2024-06-14 11:20:58,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:58,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:58,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:00,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:00,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:00,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777731364] [2024-06-14 11:21:00,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777731364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:00,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:00,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:21:00,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346132333] [2024-06-14 11:21:00,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:00,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:21:00,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:00,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:21:00,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:21:00,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:00,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 188 transitions, 1635 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:00,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:00,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:00,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:00,478 INFO L124 PetriNetUnfolderBase]: 604/1080 cut-off events. [2024-06-14 11:21:00,478 INFO L125 PetriNetUnfolderBase]: For 92436/92439 co-relation queries the response was YES. [2024-06-14 11:21:00,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6425 conditions, 1080 events. 604/1080 cut-off events. For 92436/92439 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5335 event pairs, 107 based on Foata normal form. 6/1081 useless extension candidates. Maximal degree in co-relation 6308. Up to 922 conditions per place. [2024-06-14 11:21:00,488 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 165 selfloop transitions, 42 changer transitions 0/209 dead transitions. [2024-06-14 11:21:00,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 209 transitions, 2133 flow [2024-06-14 11:21:00,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:21:00,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:21:00,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-14 11:21:00,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32231404958677684 [2024-06-14 11:21:00,489 INFO L175 Difference]: Start difference. First operand has 230 places, 188 transitions, 1635 flow. Second operand 11 states and 117 transitions. [2024-06-14 11:21:00,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 209 transitions, 2133 flow [2024-06-14 11:21:00,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 209 transitions, 2039 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-14 11:21:00,676 INFO L231 Difference]: Finished difference. Result has 232 places, 189 transitions, 1653 flow [2024-06-14 11:21:00,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1541, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1653, PETRI_PLACES=232, PETRI_TRANSITIONS=189} [2024-06-14 11:21:00,677 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 200 predicate places. [2024-06-14 11:21:00,677 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 189 transitions, 1653 flow [2024-06-14 11:21:00,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:00,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:00,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:00,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-14 11:21:00,678 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:00,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:00,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1500422197, now seen corresponding path program 5 times [2024-06-14 11:21:00,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:00,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500723766] [2024-06-14 11:21:00,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:00,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:00,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:01,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:01,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:01,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500723766] [2024-06-14 11:21:01,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500723766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:01,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:01,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:21:01,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135796993] [2024-06-14 11:21:01,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:01,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:21:01,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:01,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:21:01,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:21:01,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:01,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 189 transitions, 1653 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:01,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:01,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:01,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:02,313 INFO L124 PetriNetUnfolderBase]: 612/1093 cut-off events. [2024-06-14 11:21:02,313 INFO L125 PetriNetUnfolderBase]: For 94571/94571 co-relation queries the response was YES. [2024-06-14 11:21:02,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6513 conditions, 1093 events. 612/1093 cut-off events. For 94571/94571 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5411 event pairs, 155 based on Foata normal form. 4/1096 useless extension candidates. Maximal degree in co-relation 6395. Up to 1026 conditions per place. [2024-06-14 11:21:02,322 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 184 selfloop transitions, 19 changer transitions 0/205 dead transitions. [2024-06-14 11:21:02,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 205 transitions, 2123 flow [2024-06-14 11:21:02,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:21:02,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:21:02,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-14 11:21:02,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30303030303030304 [2024-06-14 11:21:02,324 INFO L175 Difference]: Start difference. First operand has 232 places, 189 transitions, 1653 flow. Second operand 11 states and 110 transitions. [2024-06-14 11:21:02,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 205 transitions, 2123 flow [2024-06-14 11:21:02,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 205 transitions, 2021 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-14 11:21:02,568 INFO L231 Difference]: Finished difference. Result has 234 places, 190 transitions, 1620 flow [2024-06-14 11:21:02,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1551, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1620, PETRI_PLACES=234, PETRI_TRANSITIONS=190} [2024-06-14 11:21:02,569 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 202 predicate places. [2024-06-14 11:21:02,569 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 190 transitions, 1620 flow [2024-06-14 11:21:02,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:02,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:02,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:02,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-14 11:21:02,569 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:02,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:02,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1195988557, now seen corresponding path program 6 times [2024-06-14 11:21:02,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:02,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871572665] [2024-06-14 11:21:02,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:02,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:02,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:03,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:03,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:03,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871572665] [2024-06-14 11:21:03,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871572665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:03,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:03,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:21:03,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450889652] [2024-06-14 11:21:03,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:03,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:21:03,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:03,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:21:03,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:21:03,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:03,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 190 transitions, 1620 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:03,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:03,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:03,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:03,838 INFO L124 PetriNetUnfolderBase]: 613/1096 cut-off events. [2024-06-14 11:21:03,838 INFO L125 PetriNetUnfolderBase]: For 89521/89521 co-relation queries the response was YES. [2024-06-14 11:21:03,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6329 conditions, 1096 events. 613/1096 cut-off events. For 89521/89521 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5439 event pairs, 154 based on Foata normal form. 4/1099 useless extension candidates. Maximal degree in co-relation 6210. Up to 1007 conditions per place. [2024-06-14 11:21:03,848 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 186 selfloop transitions, 18 changer transitions 0/206 dead transitions. [2024-06-14 11:21:03,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 206 transitions, 2094 flow [2024-06-14 11:21:03,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:21:03,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:21:03,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-14 11:21:03,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3090909090909091 [2024-06-14 11:21:03,849 INFO L175 Difference]: Start difference. First operand has 234 places, 190 transitions, 1620 flow. Second operand 10 states and 102 transitions. [2024-06-14 11:21:03,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 206 transitions, 2094 flow [2024-06-14 11:21:04,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 206 transitions, 2037 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-14 11:21:04,050 INFO L231 Difference]: Finished difference. Result has 235 places, 191 transitions, 1631 flow [2024-06-14 11:21:04,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1563, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1631, PETRI_PLACES=235, PETRI_TRANSITIONS=191} [2024-06-14 11:21:04,051 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 203 predicate places. [2024-06-14 11:21:04,051 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 191 transitions, 1631 flow [2024-06-14 11:21:04,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:04,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:04,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:04,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-14 11:21:04,051 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:04,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:04,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1329263911, now seen corresponding path program 1 times [2024-06-14 11:21:04,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:04,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969442336] [2024-06-14 11:21:04,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:04,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:04,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:05,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:05,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:05,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969442336] [2024-06-14 11:21:05,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969442336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:05,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:05,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:21:05,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467385987] [2024-06-14 11:21:05,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:05,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:21:05,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:05,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:21:05,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:21:05,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:05,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 191 transitions, 1631 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:05,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:05,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:05,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:05,720 INFO L124 PetriNetUnfolderBase]: 617/1105 cut-off events. [2024-06-14 11:21:05,720 INFO L125 PetriNetUnfolderBase]: For 83899/83899 co-relation queries the response was YES. [2024-06-14 11:21:05,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6361 conditions, 1105 events. 617/1105 cut-off events. For 83899/83899 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5526 event pairs, 109 based on Foata normal form. 2/1106 useless extension candidates. Maximal degree in co-relation 6241. Up to 957 conditions per place. [2024-06-14 11:21:05,730 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 187 selfloop transitions, 23 changer transitions 0/212 dead transitions. [2024-06-14 11:21:05,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 212 transitions, 2115 flow [2024-06-14 11:21:05,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:21:05,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:21:05,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-14 11:21:05,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3151515151515151 [2024-06-14 11:21:05,731 INFO L175 Difference]: Start difference. First operand has 235 places, 191 transitions, 1631 flow. Second operand 10 states and 104 transitions. [2024-06-14 11:21:05,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 212 transitions, 2115 flow [2024-06-14 11:21:05,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 212 transitions, 2057 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-14 11:21:05,953 INFO L231 Difference]: Finished difference. Result has 237 places, 192 transitions, 1638 flow [2024-06-14 11:21:05,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1573, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1638, PETRI_PLACES=237, PETRI_TRANSITIONS=192} [2024-06-14 11:21:05,953 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 205 predicate places. [2024-06-14 11:21:05,953 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 192 transitions, 1638 flow [2024-06-14 11:21:05,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:05,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:05,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:05,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-14 11:21:05,954 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:05,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:05,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1426615977, now seen corresponding path program 2 times [2024-06-14 11:21:05,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:05,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469477554] [2024-06-14 11:21:05,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:05,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:05,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:07,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:07,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:07,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469477554] [2024-06-14 11:21:07,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469477554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:07,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:07,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:21:07,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197523280] [2024-06-14 11:21:07,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:07,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:21:07,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:07,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:21:07,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:21:07,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:07,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 192 transitions, 1638 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:07,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:07,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:07,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:07,893 INFO L124 PetriNetUnfolderBase]: 621/1113 cut-off events. [2024-06-14 11:21:07,893 INFO L125 PetriNetUnfolderBase]: For 85487/85487 co-relation queries the response was YES. [2024-06-14 11:21:07,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6415 conditions, 1113 events. 621/1113 cut-off events. For 85487/85487 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5587 event pairs, 133 based on Foata normal form. 2/1114 useless extension candidates. Maximal degree in co-relation 6294. Up to 1002 conditions per place. [2024-06-14 11:21:07,902 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 188 selfloop transitions, 23 changer transitions 0/213 dead transitions. [2024-06-14 11:21:07,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 213 transitions, 2126 flow [2024-06-14 11:21:07,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:21:07,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:21:07,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-14 11:21:07,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32727272727272727 [2024-06-14 11:21:07,903 INFO L175 Difference]: Start difference. First operand has 237 places, 192 transitions, 1638 flow. Second operand 10 states and 108 transitions. [2024-06-14 11:21:07,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 213 transitions, 2126 flow [2024-06-14 11:21:08,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 213 transitions, 2073 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-14 11:21:08,091 INFO L231 Difference]: Finished difference. Result has 239 places, 193 transitions, 1651 flow [2024-06-14 11:21:08,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1585, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1651, PETRI_PLACES=239, PETRI_TRANSITIONS=193} [2024-06-14 11:21:08,091 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 207 predicate places. [2024-06-14 11:21:08,092 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 193 transitions, 1651 flow [2024-06-14 11:21:08,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:08,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:08,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:08,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-14 11:21:08,092 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:08,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:08,092 INFO L85 PathProgramCache]: Analyzing trace with hash 18574859, now seen corresponding path program 3 times [2024-06-14 11:21:08,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:08,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311101725] [2024-06-14 11:21:08,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:08,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:08,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:09,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:09,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:09,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311101725] [2024-06-14 11:21:09,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311101725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:09,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:09,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:21:09,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333256116] [2024-06-14 11:21:09,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:09,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:21:09,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:09,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:21:09,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:21:09,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:09,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 193 transitions, 1651 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:09,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:09,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:09,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:09,941 INFO L124 PetriNetUnfolderBase]: 625/1121 cut-off events. [2024-06-14 11:21:09,941 INFO L125 PetriNetUnfolderBase]: For 87905/87905 co-relation queries the response was YES. [2024-06-14 11:21:09,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6472 conditions, 1121 events. 625/1121 cut-off events. For 87905/87905 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5629 event pairs, 133 based on Foata normal form. 2/1122 useless extension candidates. Maximal degree in co-relation 6350. Up to 996 conditions per place. [2024-06-14 11:21:09,951 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 188 selfloop transitions, 24 changer transitions 0/214 dead transitions. [2024-06-14 11:21:09,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 214 transitions, 2143 flow [2024-06-14 11:21:09,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:21:09,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:21:09,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-14 11:21:09,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3303030303030303 [2024-06-14 11:21:09,952 INFO L175 Difference]: Start difference. First operand has 239 places, 193 transitions, 1651 flow. Second operand 10 states and 109 transitions. [2024-06-14 11:21:09,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 214 transitions, 2143 flow [2024-06-14 11:21:10,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 214 transitions, 2087 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-14 11:21:10,160 INFO L231 Difference]: Finished difference. Result has 241 places, 194 transitions, 1665 flow [2024-06-14 11:21:10,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1595, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1665, PETRI_PLACES=241, PETRI_TRANSITIONS=194} [2024-06-14 11:21:10,160 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 209 predicate places. [2024-06-14 11:21:10,160 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 194 transitions, 1665 flow [2024-06-14 11:21:10,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:10,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:10,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:10,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-14 11:21:10,161 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:10,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:10,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1736803245, now seen corresponding path program 4 times [2024-06-14 11:21:10,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:10,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006906682] [2024-06-14 11:21:10,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:10,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:10,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:11,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:11,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:11,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006906682] [2024-06-14 11:21:11,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006906682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:11,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:11,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:21:11,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502581189] [2024-06-14 11:21:11,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:11,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:21:11,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:11,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:21:11,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:21:11,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:11,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 194 transitions, 1665 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:11,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:11,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:11,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:12,171 INFO L124 PetriNetUnfolderBase]: 629/1129 cut-off events. [2024-06-14 11:21:12,171 INFO L125 PetriNetUnfolderBase]: For 90041/90041 co-relation queries the response was YES. [2024-06-14 11:21:12,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6533 conditions, 1129 events. 629/1129 cut-off events. For 90041/90041 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5686 event pairs, 131 based on Foata normal form. 2/1130 useless extension candidates. Maximal degree in co-relation 6410. Up to 982 conditions per place. [2024-06-14 11:21:12,180 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 188 selfloop transitions, 25 changer transitions 0/215 dead transitions. [2024-06-14 11:21:12,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 215 transitions, 2161 flow [2024-06-14 11:21:12,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:21:12,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:21:12,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-14 11:21:12,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 11:21:12,181 INFO L175 Difference]: Start difference. First operand has 241 places, 194 transitions, 1665 flow. Second operand 10 states and 110 transitions. [2024-06-14 11:21:12,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 215 transitions, 2161 flow [2024-06-14 11:21:12,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 215 transitions, 2101 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-14 11:21:12,404 INFO L231 Difference]: Finished difference. Result has 243 places, 195 transitions, 1679 flow [2024-06-14 11:21:12,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1605, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1679, PETRI_PLACES=243, PETRI_TRANSITIONS=195} [2024-06-14 11:21:12,404 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 211 predicate places. [2024-06-14 11:21:12,404 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 195 transitions, 1679 flow [2024-06-14 11:21:12,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:12,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:12,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:12,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-14 11:21:12,405 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:12,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:12,405 INFO L85 PathProgramCache]: Analyzing trace with hash 583906015, now seen corresponding path program 1 times [2024-06-14 11:21:12,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:12,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309423864] [2024-06-14 11:21:12,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:12,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:12,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:14,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:14,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:14,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309423864] [2024-06-14 11:21:14,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309423864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:14,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:14,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:21:14,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151406978] [2024-06-14 11:21:14,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:14,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:21:14,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:14,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:21:14,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:21:14,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:14,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 195 transitions, 1679 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:14,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:14,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:14,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:14,663 INFO L124 PetriNetUnfolderBase]: 635/1139 cut-off events. [2024-06-14 11:21:14,664 INFO L125 PetriNetUnfolderBase]: For 92158/92158 co-relation queries the response was YES. [2024-06-14 11:21:14,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6606 conditions, 1139 events. 635/1139 cut-off events. For 92158/92158 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5754 event pairs, 136 based on Foata normal form. 2/1140 useless extension candidates. Maximal degree in co-relation 6482. Up to 1018 conditions per place. [2024-06-14 11:21:14,674 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 191 selfloop transitions, 26 changer transitions 0/219 dead transitions. [2024-06-14 11:21:14,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 219 transitions, 2209 flow [2024-06-14 11:21:14,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:21:14,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:21:14,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-14 11:21:14,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325068870523416 [2024-06-14 11:21:14,674 INFO L175 Difference]: Start difference. First operand has 243 places, 195 transitions, 1679 flow. Second operand 11 states and 118 transitions. [2024-06-14 11:21:14,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 219 transitions, 2209 flow [2024-06-14 11:21:14,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 219 transitions, 2145 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-14 11:21:14,956 INFO L231 Difference]: Finished difference. Result has 246 places, 197 transitions, 1716 flow [2024-06-14 11:21:14,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1615, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1716, PETRI_PLACES=246, PETRI_TRANSITIONS=197} [2024-06-14 11:21:14,957 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 214 predicate places. [2024-06-14 11:21:14,957 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 197 transitions, 1716 flow [2024-06-14 11:21:14,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:14,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:14,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:14,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-14 11:21:14,957 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:14,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:14,958 INFO L85 PathProgramCache]: Analyzing trace with hash -740464647, now seen corresponding path program 5 times [2024-06-14 11:21:14,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:14,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421542747] [2024-06-14 11:21:14,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:14,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:14,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:16,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:16,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:16,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421542747] [2024-06-14 11:21:16,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421542747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:16,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:16,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:21:16,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275264156] [2024-06-14 11:21:16,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:16,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:21:16,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:16,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:21:16,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:21:16,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:16,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 197 transitions, 1716 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:16,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:16,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:16,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:17,023 INFO L124 PetriNetUnfolderBase]: 639/1146 cut-off events. [2024-06-14 11:21:17,024 INFO L125 PetriNetUnfolderBase]: For 93875/93875 co-relation queries the response was YES. [2024-06-14 11:21:17,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6677 conditions, 1146 events. 639/1146 cut-off events. For 93875/93875 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5791 event pairs, 121 based on Foata normal form. 2/1147 useless extension candidates. Maximal degree in co-relation 6552. Up to 953 conditions per place. [2024-06-14 11:21:17,034 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 177 selfloop transitions, 38 changer transitions 0/217 dead transitions. [2024-06-14 11:21:17,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 217 transitions, 2212 flow [2024-06-14 11:21:17,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:21:17,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:21:17,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-14 11:21:17,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3424242424242424 [2024-06-14 11:21:17,035 INFO L175 Difference]: Start difference. First operand has 246 places, 197 transitions, 1716 flow. Second operand 10 states and 113 transitions. [2024-06-14 11:21:17,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 217 transitions, 2212 flow [2024-06-14 11:21:17,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 217 transitions, 2127 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-14 11:21:17,284 INFO L231 Difference]: Finished difference. Result has 247 places, 198 transitions, 1733 flow [2024-06-14 11:21:17,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1631, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1733, PETRI_PLACES=247, PETRI_TRANSITIONS=198} [2024-06-14 11:21:17,284 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 215 predicate places. [2024-06-14 11:21:17,284 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 198 transitions, 1733 flow [2024-06-14 11:21:17,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:17,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:17,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:17,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-14 11:21:17,285 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:17,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:17,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1316392753, now seen corresponding path program 6 times [2024-06-14 11:21:17,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:17,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895111223] [2024-06-14 11:21:17,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:17,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:17,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:18,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:18,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:18,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895111223] [2024-06-14 11:21:18,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895111223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:18,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:18,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:21:18,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816466563] [2024-06-14 11:21:18,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:18,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:21:18,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:18,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:21:18,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:21:18,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:18,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 198 transitions, 1733 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:18,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:18,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:18,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:19,292 INFO L124 PetriNetUnfolderBase]: 643/1154 cut-off events. [2024-06-14 11:21:19,292 INFO L125 PetriNetUnfolderBase]: For 96106/96106 co-relation queries the response was YES. [2024-06-14 11:21:19,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6752 conditions, 1154 events. 643/1154 cut-off events. For 96106/96106 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5895 event pairs, 121 based on Foata normal form. 2/1155 useless extension candidates. Maximal degree in co-relation 6626. Up to 947 conditions per place. [2024-06-14 11:21:19,302 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 177 selfloop transitions, 39 changer transitions 0/218 dead transitions. [2024-06-14 11:21:19,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 218 transitions, 2233 flow [2024-06-14 11:21:19,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:21:19,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:21:19,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-14 11:21:19,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-06-14 11:21:19,303 INFO L175 Difference]: Start difference. First operand has 247 places, 198 transitions, 1733 flow. Second operand 10 states and 114 transitions. [2024-06-14 11:21:19,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 218 transitions, 2233 flow [2024-06-14 11:21:19,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 218 transitions, 2141 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-14 11:21:19,631 INFO L231 Difference]: Finished difference. Result has 249 places, 199 transitions, 1747 flow [2024-06-14 11:21:19,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1641, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1747, PETRI_PLACES=249, PETRI_TRANSITIONS=199} [2024-06-14 11:21:19,631 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 217 predicate places. [2024-06-14 11:21:19,631 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 199 transitions, 1747 flow [2024-06-14 11:21:19,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:19,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:19,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:19,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-14 11:21:19,631 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:19,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:19,632 INFO L85 PathProgramCache]: Analyzing trace with hash -745053267, now seen corresponding path program 7 times [2024-06-14 11:21:19,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:19,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738264673] [2024-06-14 11:21:19,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:19,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:19,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:20,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:20,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:20,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738264673] [2024-06-14 11:21:20,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738264673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:20,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:20,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:21:20,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669660839] [2024-06-14 11:21:20,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:20,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:21:20,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:20,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:21:20,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:21:20,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:20,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 199 transitions, 1747 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:20,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:20,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:20,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:21,319 INFO L124 PetriNetUnfolderBase]: 654/1175 cut-off events. [2024-06-14 11:21:21,319 INFO L125 PetriNetUnfolderBase]: For 107442/107442 co-relation queries the response was YES. [2024-06-14 11:21:21,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7093 conditions, 1175 events. 654/1175 cut-off events. For 107442/107442 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6003 event pairs, 124 based on Foata normal form. 2/1176 useless extension candidates. Maximal degree in co-relation 6966. Up to 925 conditions per place. [2024-06-14 11:21:21,330 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 178 selfloop transitions, 41 changer transitions 0/221 dead transitions. [2024-06-14 11:21:21,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 221 transitions, 2469 flow [2024-06-14 11:21:21,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:21:21,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:21:21,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-14 11:21:21,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-06-14 11:21:21,331 INFO L175 Difference]: Start difference. First operand has 249 places, 199 transitions, 1747 flow. Second operand 10 states and 114 transitions. [2024-06-14 11:21:21,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 221 transitions, 2469 flow [2024-06-14 11:21:21,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 221 transitions, 2373 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-14 11:21:21,687 INFO L231 Difference]: Finished difference. Result has 251 places, 201 transitions, 1787 flow [2024-06-14 11:21:21,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1651, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1787, PETRI_PLACES=251, PETRI_TRANSITIONS=201} [2024-06-14 11:21:21,688 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 219 predicate places. [2024-06-14 11:21:21,688 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 201 transitions, 1787 flow [2024-06-14 11:21:21,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:21,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:21,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:21,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-14 11:21:21,688 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:21,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:21,688 INFO L85 PathProgramCache]: Analyzing trace with hash -740284723, now seen corresponding path program 2 times [2024-06-14 11:21:21,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:21,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324558156] [2024-06-14 11:21:21,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:21,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:21,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:23,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:23,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:23,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324558156] [2024-06-14 11:21:23,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324558156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:23,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:23,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:21:23,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407025369] [2024-06-14 11:21:23,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:23,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:21:23,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:23,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:21:23,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:21:23,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:23,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 201 transitions, 1787 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:23,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:23,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:23,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:24,414 INFO L124 PetriNetUnfolderBase]: 660/1185 cut-off events. [2024-06-14 11:21:24,414 INFO L125 PetriNetUnfolderBase]: For 109816/109816 co-relation queries the response was YES. [2024-06-14 11:21:24,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7168 conditions, 1185 events. 660/1185 cut-off events. For 109816/109816 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6086 event pairs, 124 based on Foata normal form. 2/1186 useless extension candidates. Maximal degree in co-relation 7040. Up to 982 conditions per place. [2024-06-14 11:21:24,424 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 181 selfloop transitions, 41 changer transitions 0/224 dead transitions. [2024-06-14 11:21:24,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 224 transitions, 2325 flow [2024-06-14 11:21:24,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:21:24,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:21:24,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-14 11:21:24,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33884297520661155 [2024-06-14 11:21:24,425 INFO L175 Difference]: Start difference. First operand has 251 places, 201 transitions, 1787 flow. Second operand 11 states and 123 transitions. [2024-06-14 11:21:24,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 224 transitions, 2325 flow [2024-06-14 11:21:24,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 224 transitions, 2247 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-14 11:21:24,751 INFO L231 Difference]: Finished difference. Result has 256 places, 203 transitions, 1844 flow [2024-06-14 11:21:24,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1709, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1844, PETRI_PLACES=256, PETRI_TRANSITIONS=203} [2024-06-14 11:21:24,751 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 224 predicate places. [2024-06-14 11:21:24,751 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 203 transitions, 1844 flow [2024-06-14 11:21:24,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:24,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:24,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:24,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-14 11:21:24,752 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:24,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:24,752 INFO L85 PathProgramCache]: Analyzing trace with hash -117946365, now seen corresponding path program 8 times [2024-06-14 11:21:24,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:24,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281983263] [2024-06-14 11:21:24,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:24,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:24,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:26,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:26,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:26,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281983263] [2024-06-14 11:21:26,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281983263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:26,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:26,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:21:26,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158211945] [2024-06-14 11:21:26,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:26,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:21:26,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:26,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:21:26,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:21:26,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:26,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 203 transitions, 1844 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:26,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:26,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:26,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:26,818 INFO L124 PetriNetUnfolderBase]: 664/1193 cut-off events. [2024-06-14 11:21:26,818 INFO L125 PetriNetUnfolderBase]: For 112020/112020 co-relation queries the response was YES. [2024-06-14 11:21:26,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7288 conditions, 1193 events. 664/1193 cut-off events. For 112020/112020 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6124 event pairs, 121 based on Foata normal form. 2/1194 useless extension candidates. Maximal degree in co-relation 7158. Up to 1000 conditions per place. [2024-06-14 11:21:26,829 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 182 selfloop transitions, 41 changer transitions 0/225 dead transitions. [2024-06-14 11:21:26,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 225 transitions, 2366 flow [2024-06-14 11:21:26,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:21:26,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:21:26,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-14 11:21:26,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3424242424242424 [2024-06-14 11:21:26,830 INFO L175 Difference]: Start difference. First operand has 256 places, 203 transitions, 1844 flow. Second operand 10 states and 113 transitions. [2024-06-14 11:21:26,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 225 transitions, 2366 flow [2024-06-14 11:21:27,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 225 transitions, 2247 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-14 11:21:27,230 INFO L231 Difference]: Finished difference. Result has 257 places, 204 transitions, 1835 flow [2024-06-14 11:21:27,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1725, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1835, PETRI_PLACES=257, PETRI_TRANSITIONS=204} [2024-06-14 11:21:27,231 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 225 predicate places. [2024-06-14 11:21:27,231 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 204 transitions, 1835 flow [2024-06-14 11:21:27,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:27,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:27,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:27,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-14 11:21:27,232 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:27,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:27,232 INFO L85 PathProgramCache]: Analyzing trace with hash -117939421, now seen corresponding path program 3 times [2024-06-14 11:21:27,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:27,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541526206] [2024-06-14 11:21:27,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:27,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:27,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:29,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:29,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:29,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541526206] [2024-06-14 11:21:29,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541526206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:29,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:29,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:21:29,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226685050] [2024-06-14 11:21:29,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:29,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:21:29,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:29,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:21:29,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:21:29,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:29,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 204 transitions, 1835 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:29,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:29,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:29,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:29,884 INFO L124 PetriNetUnfolderBase]: 670/1203 cut-off events. [2024-06-14 11:21:29,884 INFO L125 PetriNetUnfolderBase]: For 114318/114318 co-relation queries the response was YES. [2024-06-14 11:21:29,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7359 conditions, 1203 events. 670/1203 cut-off events. For 114318/114318 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6205 event pairs, 121 based on Foata normal form. 2/1204 useless extension candidates. Maximal degree in co-relation 7228. Up to 1000 conditions per place. [2024-06-14 11:21:29,896 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 183 selfloop transitions, 44 changer transitions 0/229 dead transitions. [2024-06-14 11:21:29,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 229 transitions, 2395 flow [2024-06-14 11:21:29,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:21:29,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:21:29,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-14 11:21:29,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33884297520661155 [2024-06-14 11:21:29,897 INFO L175 Difference]: Start difference. First operand has 257 places, 204 transitions, 1835 flow. Second operand 11 states and 123 transitions. [2024-06-14 11:21:29,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 229 transitions, 2395 flow [2024-06-14 11:21:30,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 229 transitions, 2297 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-14 11:21:30,287 INFO L231 Difference]: Finished difference. Result has 260 places, 206 transitions, 1882 flow [2024-06-14 11:21:30,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1737, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1882, PETRI_PLACES=260, PETRI_TRANSITIONS=206} [2024-06-14 11:21:30,288 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 228 predicate places. [2024-06-14 11:21:30,288 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 206 transitions, 1882 flow [2024-06-14 11:21:30,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:30,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:30,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:30,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-14 11:21:30,289 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:30,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:30,289 INFO L85 PathProgramCache]: Analyzing trace with hash -117708781, now seen corresponding path program 4 times [2024-06-14 11:21:30,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:30,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571514774] [2024-06-14 11:21:30,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:30,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:30,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:32,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:32,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:32,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571514774] [2024-06-14 11:21:32,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571514774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:32,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:32,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:21:32,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097972554] [2024-06-14 11:21:32,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:32,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:21:32,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:32,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:21:32,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:21:32,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:32,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 206 transitions, 1882 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:32,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:32,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:32,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:32,882 INFO L124 PetriNetUnfolderBase]: 676/1213 cut-off events. [2024-06-14 11:21:32,882 INFO L125 PetriNetUnfolderBase]: For 116932/116932 co-relation queries the response was YES. [2024-06-14 11:21:32,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7463 conditions, 1213 events. 676/1213 cut-off events. For 116932/116932 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6291 event pairs, 119 based on Foata normal form. 2/1214 useless extension candidates. Maximal degree in co-relation 7331. Up to 967 conditions per place. [2024-06-14 11:21:32,894 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 176 selfloop transitions, 54 changer transitions 0/232 dead transitions. [2024-06-14 11:21:32,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 232 transitions, 2456 flow [2024-06-14 11:21:32,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:21:32,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:21:32,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-14 11:21:32,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3443526170798898 [2024-06-14 11:21:32,895 INFO L175 Difference]: Start difference. First operand has 260 places, 206 transitions, 1882 flow. Second operand 11 states and 125 transitions. [2024-06-14 11:21:32,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 232 transitions, 2456 flow [2024-06-14 11:21:33,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 232 transitions, 2327 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-14 11:21:33,326 INFO L231 Difference]: Finished difference. Result has 262 places, 208 transitions, 1922 flow [2024-06-14 11:21:33,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1753, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1922, PETRI_PLACES=262, PETRI_TRANSITIONS=208} [2024-06-14 11:21:33,326 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 230 predicate places. [2024-06-14 11:21:33,327 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 208 transitions, 1922 flow [2024-06-14 11:21:33,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:33,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:33,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:33,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-14 11:21:33,327 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:33,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:33,328 INFO L85 PathProgramCache]: Analyzing trace with hash -124375455, now seen corresponding path program 9 times [2024-06-14 11:21:33,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:33,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061621227] [2024-06-14 11:21:33,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:33,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:33,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:34,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:34,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:34,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061621227] [2024-06-14 11:21:34,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061621227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:34,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:34,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:21:34,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191851250] [2024-06-14 11:21:34,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:34,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:21:34,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:34,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:21:34,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:21:34,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:34,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 208 transitions, 1922 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:34,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:34,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:34,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:35,328 INFO L124 PetriNetUnfolderBase]: 680/1221 cut-off events. [2024-06-14 11:21:35,328 INFO L125 PetriNetUnfolderBase]: For 119018/119018 co-relation queries the response was YES. [2024-06-14 11:21:35,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7553 conditions, 1221 events. 680/1221 cut-off events. For 119018/119018 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6336 event pairs, 127 based on Foata normal form. 2/1222 useless extension candidates. Maximal degree in co-relation 7420. Up to 1028 conditions per place. [2024-06-14 11:21:35,337 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 188 selfloop transitions, 39 changer transitions 0/229 dead transitions. [2024-06-14 11:21:35,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 229 transitions, 2450 flow [2024-06-14 11:21:35,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:21:35,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:21:35,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-14 11:21:35,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3424242424242424 [2024-06-14 11:21:35,341 INFO L175 Difference]: Start difference. First operand has 262 places, 208 transitions, 1922 flow. Second operand 10 states and 113 transitions. [2024-06-14 11:21:35,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 229 transitions, 2450 flow [2024-06-14 11:21:35,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 229 transitions, 2297 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-14 11:21:35,698 INFO L231 Difference]: Finished difference. Result has 263 places, 209 transitions, 1877 flow [2024-06-14 11:21:35,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1769, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1877, PETRI_PLACES=263, PETRI_TRANSITIONS=209} [2024-06-14 11:21:35,699 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 231 predicate places. [2024-06-14 11:21:35,699 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 209 transitions, 1877 flow [2024-06-14 11:21:35,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:35,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:35,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:35,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-14 11:21:35,699 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:35,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:35,700 INFO L85 PathProgramCache]: Analyzing trace with hash -457791775, now seen corresponding path program 10 times [2024-06-14 11:21:35,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:35,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246529184] [2024-06-14 11:21:35,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:35,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:35,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:37,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:37,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:37,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246529184] [2024-06-14 11:21:37,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246529184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:37,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:37,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:21:37,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212771308] [2024-06-14 11:21:37,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:37,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:21:37,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:37,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:21:37,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:21:37,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:37,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 209 transitions, 1877 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:37,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:37,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:37,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:37,667 INFO L124 PetriNetUnfolderBase]: 677/1216 cut-off events. [2024-06-14 11:21:37,667 INFO L125 PetriNetUnfolderBase]: For 111218/111218 co-relation queries the response was YES. [2024-06-14 11:21:37,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7248 conditions, 1216 events. 677/1216 cut-off events. For 111218/111218 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6304 event pairs, 124 based on Foata normal form. 2/1217 useless extension candidates. Maximal degree in co-relation 7114. Up to 1003 conditions per place. [2024-06-14 11:21:37,678 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 186 selfloop transitions, 41 changer transitions 0/229 dead transitions. [2024-06-14 11:21:37,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 229 transitions, 2381 flow [2024-06-14 11:21:37,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:21:37,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:21:37,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-14 11:21:37,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3424242424242424 [2024-06-14 11:21:37,679 INFO L175 Difference]: Start difference. First operand has 263 places, 209 transitions, 1877 flow. Second operand 10 states and 113 transitions. [2024-06-14 11:21:37,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 229 transitions, 2381 flow [2024-06-14 11:21:38,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 229 transitions, 2271 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-14 11:21:38,171 INFO L231 Difference]: Finished difference. Result has 265 places, 209 transitions, 1853 flow [2024-06-14 11:21:38,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1767, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1853, PETRI_PLACES=265, PETRI_TRANSITIONS=209} [2024-06-14 11:21:38,171 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 233 predicate places. [2024-06-14 11:21:38,171 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 209 transitions, 1853 flow [2024-06-14 11:21:38,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:38,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:38,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:38,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-14 11:21:38,172 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:38,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:38,172 INFO L85 PathProgramCache]: Analyzing trace with hash -117700411, now seen corresponding path program 5 times [2024-06-14 11:21:38,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:38,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482759320] [2024-06-14 11:21:38,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:38,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:38,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:39,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:39,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:39,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482759320] [2024-06-14 11:21:39,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482759320] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:39,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:39,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:21:39,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238558418] [2024-06-14 11:21:39,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:39,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:21:39,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:39,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:21:39,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:21:39,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:39,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 209 transitions, 1853 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:39,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:39,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:39,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:40,597 INFO L124 PetriNetUnfolderBase]: 693/1242 cut-off events. [2024-06-14 11:21:40,597 INFO L125 PetriNetUnfolderBase]: For 124008/124008 co-relation queries the response was YES. [2024-06-14 11:21:40,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7634 conditions, 1242 events. 693/1242 cut-off events. For 124008/124008 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6459 event pairs, 120 based on Foata normal form. 2/1243 useless extension candidates. Maximal degree in co-relation 7499. Up to 942 conditions per place. [2024-06-14 11:21:40,609 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 171 selfloop transitions, 66 changer transitions 0/239 dead transitions. [2024-06-14 11:21:40,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 239 transitions, 2709 flow [2024-06-14 11:21:40,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:21:40,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:21:40,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-14 11:21:40,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3526170798898072 [2024-06-14 11:21:40,610 INFO L175 Difference]: Start difference. First operand has 265 places, 209 transitions, 1853 flow. Second operand 11 states and 128 transitions. [2024-06-14 11:21:40,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 239 transitions, 2709 flow [2024-06-14 11:21:41,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 239 transitions, 2609 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-14 11:21:41,100 INFO L231 Difference]: Finished difference. Result has 267 places, 213 transitions, 2007 flow [2024-06-14 11:21:41,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1753, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2007, PETRI_PLACES=267, PETRI_TRANSITIONS=213} [2024-06-14 11:21:41,101 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 235 predicate places. [2024-06-14 11:21:41,101 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 213 transitions, 2007 flow [2024-06-14 11:21:41,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:41,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:41,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:41,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-14 11:21:41,102 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:41,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:41,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1145505749, now seen corresponding path program 6 times [2024-06-14 11:21:41,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:41,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949142932] [2024-06-14 11:21:41,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:41,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:41,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:42,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:42,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:42,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949142932] [2024-06-14 11:21:42,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949142932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:42,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:42,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:21:42,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624901903] [2024-06-14 11:21:42,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:42,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:21:42,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:42,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:21:42,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:21:42,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:42,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 213 transitions, 2007 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:42,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:42,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:42,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:43,356 INFO L124 PetriNetUnfolderBase]: 689/1236 cut-off events. [2024-06-14 11:21:43,356 INFO L125 PetriNetUnfolderBase]: For 116131/116131 co-relation queries the response was YES. [2024-06-14 11:21:43,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7487 conditions, 1236 events. 689/1236 cut-off events. For 116131/116131 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6430 event pairs, 124 based on Foata normal form. 2/1237 useless extension candidates. Maximal degree in co-relation 7351. Up to 1033 conditions per place. [2024-06-14 11:21:43,367 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 191 selfloop transitions, 42 changer transitions 0/235 dead transitions. [2024-06-14 11:21:43,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 235 transitions, 2527 flow [2024-06-14 11:21:43,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:21:43,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:21:43,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-14 11:21:43,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33884297520661155 [2024-06-14 11:21:43,369 INFO L175 Difference]: Start difference. First operand has 267 places, 213 transitions, 2007 flow. Second operand 11 states and 123 transitions. [2024-06-14 11:21:43,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 235 transitions, 2527 flow [2024-06-14 11:21:43,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 235 transitions, 2367 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-14 11:21:43,789 INFO L231 Difference]: Finished difference. Result has 271 places, 213 transitions, 1936 flow [2024-06-14 11:21:43,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1847, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1936, PETRI_PLACES=271, PETRI_TRANSITIONS=213} [2024-06-14 11:21:43,790 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 239 predicate places. [2024-06-14 11:21:43,790 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 213 transitions, 1936 flow [2024-06-14 11:21:43,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:43,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:43,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:43,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-14 11:21:43,790 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:43,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:43,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1139010319, now seen corresponding path program 1 times [2024-06-14 11:21:43,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:43,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699823947] [2024-06-14 11:21:43,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:43,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:43,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:45,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:45,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:45,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699823947] [2024-06-14 11:21:45,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699823947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:45,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:45,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:21:45,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853574507] [2024-06-14 11:21:45,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:45,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:21:45,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:45,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:21:45,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:21:45,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:45,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 213 transitions, 1936 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:45,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:45,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:45,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:45,879 INFO L124 PetriNetUnfolderBase]: 686/1232 cut-off events. [2024-06-14 11:21:45,879 INFO L125 PetriNetUnfolderBase]: For 106997/106997 co-relation queries the response was YES. [2024-06-14 11:21:45,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7207 conditions, 1232 events. 686/1232 cut-off events. For 106997/106997 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6424 event pairs, 151 based on Foata normal form. 2/1233 useless extension candidates. Maximal degree in co-relation 7069. Up to 1115 conditions per place. [2024-06-14 11:21:45,891 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 200 selfloop transitions, 32 changer transitions 0/234 dead transitions. [2024-06-14 11:21:45,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 234 transitions, 2464 flow [2024-06-14 11:21:45,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:21:45,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:21:45,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-14 11:21:45,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3168044077134986 [2024-06-14 11:21:45,892 INFO L175 Difference]: Start difference. First operand has 271 places, 213 transitions, 1936 flow. Second operand 11 states and 115 transitions. [2024-06-14 11:21:45,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 234 transitions, 2464 flow [2024-06-14 11:21:46,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 234 transitions, 2344 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-14 11:21:46,272 INFO L231 Difference]: Finished difference. Result has 272 places, 213 transitions, 1886 flow [2024-06-14 11:21:46,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1816, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1886, PETRI_PLACES=272, PETRI_TRANSITIONS=213} [2024-06-14 11:21:46,272 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 240 predicate places. [2024-06-14 11:21:46,273 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 213 transitions, 1886 flow [2024-06-14 11:21:46,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:46,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:46,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:46,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-14 11:21:46,273 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:46,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:46,273 INFO L85 PathProgramCache]: Analyzing trace with hash -919227219, now seen corresponding path program 11 times [2024-06-14 11:21:46,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:46,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643398872] [2024-06-14 11:21:46,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:46,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:47,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:47,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:47,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643398872] [2024-06-14 11:21:47,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643398872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:47,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:47,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:21:47,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499883002] [2024-06-14 11:21:47,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:47,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:21:47,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:47,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:21:47,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:21:47,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:47,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 213 transitions, 1886 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:47,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:47,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:47,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:48,028 INFO L124 PetriNetUnfolderBase]: 690/1241 cut-off events. [2024-06-14 11:21:48,028 INFO L125 PetriNetUnfolderBase]: For 109291/109294 co-relation queries the response was YES. [2024-06-14 11:21:48,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7214 conditions, 1241 events. 690/1241 cut-off events. For 109291/109294 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6472 event pairs, 97 based on Foata normal form. 2/1237 useless extension candidates. Maximal degree in co-relation 7075. Up to 927 conditions per place. [2024-06-14 11:21:48,039 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 175 selfloop transitions, 58 changer transitions 0/235 dead transitions. [2024-06-14 11:21:48,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 235 transitions, 2432 flow [2024-06-14 11:21:48,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:21:48,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:21:48,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-14 11:21:48,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3606060606060606 [2024-06-14 11:21:48,041 INFO L175 Difference]: Start difference. First operand has 272 places, 213 transitions, 1886 flow. Second operand 10 states and 119 transitions. [2024-06-14 11:21:48,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 235 transitions, 2432 flow [2024-06-14 11:21:48,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 235 transitions, 2346 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-14 11:21:48,540 INFO L231 Difference]: Finished difference. Result has 273 places, 214 transitions, 1948 flow [2024-06-14 11:21:48,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1800, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1948, PETRI_PLACES=273, PETRI_TRANSITIONS=214} [2024-06-14 11:21:48,540 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 241 predicate places. [2024-06-14 11:21:48,540 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 214 transitions, 1948 flow [2024-06-14 11:21:48,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:48,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:48,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:48,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-14 11:21:48,541 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:48,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:48,541 INFO L85 PathProgramCache]: Analyzing trace with hash -918981265, now seen corresponding path program 7 times [2024-06-14 11:21:48,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:48,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082155415] [2024-06-14 11:21:48,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:48,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:48,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:49,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:49,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:49,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082155415] [2024-06-14 11:21:49,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082155415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:49,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:49,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:21:49,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061682245] [2024-06-14 11:21:49,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:49,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:21:49,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:49,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:21:49,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:21:50,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:50,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 214 transitions, 1948 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:50,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:50,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:50,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:50,536 INFO L124 PetriNetUnfolderBase]: 696/1251 cut-off events. [2024-06-14 11:21:50,536 INFO L125 PetriNetUnfolderBase]: For 109533/109536 co-relation queries the response was YES. [2024-06-14 11:21:50,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7357 conditions, 1251 events. 696/1251 cut-off events. For 109533/109536 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6531 event pairs, 80 based on Foata normal form. 2/1247 useless extension candidates. Maximal degree in co-relation 7217. Up to 660 conditions per place. [2024-06-14 11:21:50,548 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 110 selfloop transitions, 129 changer transitions 0/241 dead transitions. [2024-06-14 11:21:50,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 241 transitions, 2814 flow [2024-06-14 11:21:50,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:21:50,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:21:50,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-14 11:21:50,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2024-06-14 11:21:50,549 INFO L175 Difference]: Start difference. First operand has 273 places, 214 transitions, 1948 flow. Second operand 10 states and 123 transitions. [2024-06-14 11:21:50,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 241 transitions, 2814 flow [2024-06-14 11:21:50,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 241 transitions, 2639 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-14 11:21:50,908 INFO L231 Difference]: Finished difference. Result has 274 places, 218 transitions, 2172 flow [2024-06-14 11:21:50,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1779, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2172, PETRI_PLACES=274, PETRI_TRANSITIONS=218} [2024-06-14 11:21:50,909 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 242 predicate places. [2024-06-14 11:21:50,909 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 218 transitions, 2172 flow [2024-06-14 11:21:50,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:50,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:50,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:50,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-14 11:21:50,909 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:50,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:50,910 INFO L85 PathProgramCache]: Analyzing trace with hash 782751771, now seen corresponding path program 8 times [2024-06-14 11:21:50,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:50,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91335209] [2024-06-14 11:21:50,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:50,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:50,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:52,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:52,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:52,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91335209] [2024-06-14 11:21:52,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91335209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:52,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:52,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:21:52,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049262490] [2024-06-14 11:21:52,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:52,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:21:52,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:52,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:21:52,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:21:52,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:52,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 218 transitions, 2172 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:52,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:52,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:52,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:53,643 INFO L124 PetriNetUnfolderBase]: 702/1261 cut-off events. [2024-06-14 11:21:53,643 INFO L125 PetriNetUnfolderBase]: For 105827/105830 co-relation queries the response was YES. [2024-06-14 11:21:53,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7554 conditions, 1261 events. 702/1261 cut-off events. For 105827/105830 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6598 event pairs, 85 based on Foata normal form. 2/1257 useless extension candidates. Maximal degree in co-relation 7414. Up to 923 conditions per place. [2024-06-14 11:21:53,655 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 167 selfloop transitions, 75 changer transitions 0/244 dead transitions. [2024-06-14 11:21:53,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 244 transitions, 2782 flow [2024-06-14 11:21:53,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:21:53,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:21:53,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-14 11:21:53,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35537190082644626 [2024-06-14 11:21:53,656 INFO L175 Difference]: Start difference. First operand has 274 places, 218 transitions, 2172 flow. Second operand 11 states and 129 transitions. [2024-06-14 11:21:53,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 244 transitions, 2782 flow [2024-06-14 11:21:54,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 244 transitions, 2556 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-14 11:21:54,043 INFO L231 Difference]: Finished difference. Result has 278 places, 220 transitions, 2169 flow [2024-06-14 11:21:54,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1956, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2169, PETRI_PLACES=278, PETRI_TRANSITIONS=220} [2024-06-14 11:21:54,044 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 246 predicate places. [2024-06-14 11:21:54,044 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 220 transitions, 2169 flow [2024-06-14 11:21:54,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:54,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:54,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:54,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-14 11:21:54,044 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:54,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:54,044 INFO L85 PathProgramCache]: Analyzing trace with hash -918989635, now seen corresponding path program 9 times [2024-06-14 11:21:54,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:54,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705535589] [2024-06-14 11:21:54,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:54,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:54,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:55,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:55,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:55,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705535589] [2024-06-14 11:21:55,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705535589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:55,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:55,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:21:55,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494698940] [2024-06-14 11:21:55,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:55,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:21:55,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:55,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:21:55,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:21:55,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:55,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 220 transitions, 2169 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:55,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:55,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:55,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:56,626 INFO L124 PetriNetUnfolderBase]: 724/1297 cut-off events. [2024-06-14 11:21:56,626 INFO L125 PetriNetUnfolderBase]: For 116083/116086 co-relation queries the response was YES. [2024-06-14 11:21:56,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8015 conditions, 1297 events. 724/1297 cut-off events. For 116083/116086 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6807 event pairs, 98 based on Foata normal form. 2/1293 useless extension candidates. Maximal degree in co-relation 7874. Up to 910 conditions per place. [2024-06-14 11:21:56,638 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 179 selfloop transitions, 70 changer transitions 0/251 dead transitions. [2024-06-14 11:21:56,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 251 transitions, 3065 flow [2024-06-14 11:21:56,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:21:56,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:21:56,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-14 11:21:56,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3691460055096419 [2024-06-14 11:21:56,639 INFO L175 Difference]: Start difference. First operand has 278 places, 220 transitions, 2169 flow. Second operand 11 states and 134 transitions. [2024-06-14 11:21:56,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 251 transitions, 3065 flow [2024-06-14 11:21:57,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 251 transitions, 2872 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-14 11:21:57,121 INFO L231 Difference]: Finished difference. Result has 281 places, 226 transitions, 2265 flow [2024-06-14 11:21:57,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1976, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2265, PETRI_PLACES=281, PETRI_TRANSITIONS=226} [2024-06-14 11:21:57,122 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 249 predicate places. [2024-06-14 11:21:57,122 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 226 transitions, 2265 flow [2024-06-14 11:21:57,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:57,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:57,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:57,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-14 11:21:57,123 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:57,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:57,123 INFO L85 PathProgramCache]: Analyzing trace with hash -919220275, now seen corresponding path program 10 times [2024-06-14 11:21:57,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:57,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713199534] [2024-06-14 11:21:57,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:57,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:59,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:59,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:59,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713199534] [2024-06-14 11:21:59,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713199534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:59,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:59,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:21:59,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190593081] [2024-06-14 11:21:59,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:59,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:21:59,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:59,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:21:59,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:21:59,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:59,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 226 transitions, 2265 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:59,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:59,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:59,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:59,756 INFO L124 PetriNetUnfolderBase]: 730/1307 cut-off events. [2024-06-14 11:21:59,756 INFO L125 PetriNetUnfolderBase]: For 118671/118674 co-relation queries the response was YES. [2024-06-14 11:21:59,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8089 conditions, 1307 events. 730/1307 cut-off events. For 118671/118674 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6854 event pairs, 100 based on Foata normal form. 2/1303 useless extension candidates. Maximal degree in co-relation 7946. Up to 983 conditions per place. [2024-06-14 11:21:59,769 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 188 selfloop transitions, 61 changer transitions 0/251 dead transitions. [2024-06-14 11:21:59,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 251 transitions, 2883 flow [2024-06-14 11:21:59,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:21:59,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:21:59,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-14 11:21:59,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35537190082644626 [2024-06-14 11:21:59,770 INFO L175 Difference]: Start difference. First operand has 281 places, 226 transitions, 2265 flow. Second operand 11 states and 129 transitions. [2024-06-14 11:21:59,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 251 transitions, 2883 flow [2024-06-14 11:22:00,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 251 transitions, 2740 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-14 11:22:00,220 INFO L231 Difference]: Finished difference. Result has 286 places, 228 transitions, 2315 flow [2024-06-14 11:22:00,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2130, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2315, PETRI_PLACES=286, PETRI_TRANSITIONS=228} [2024-06-14 11:22:00,221 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 254 predicate places. [2024-06-14 11:22:00,221 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 228 transitions, 2315 flow [2024-06-14 11:22:00,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:00,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:00,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:00,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-14 11:22:00,221 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:22:00,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:00,221 INFO L85 PathProgramCache]: Analyzing trace with hash -925656309, now seen corresponding path program 12 times [2024-06-14 11:22:00,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:00,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83259756] [2024-06-14 11:22:00,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:00,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:01,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:01,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:01,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83259756] [2024-06-14 11:22:01,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83259756] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:01,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:01,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:22:01,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975543109] [2024-06-14 11:22:01,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:01,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:22:01,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:01,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:22:01,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:22:01,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:22:01,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 228 transitions, 2315 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:01,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:01,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:22:01,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:02,297 INFO L124 PetriNetUnfolderBase]: 734/1315 cut-off events. [2024-06-14 11:22:02,297 INFO L125 PetriNetUnfolderBase]: For 120650/120653 co-relation queries the response was YES. [2024-06-14 11:22:02,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8209 conditions, 1315 events. 734/1315 cut-off events. For 120650/120653 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6898 event pairs, 100 based on Foata normal form. 2/1311 useless extension candidates. Maximal degree in co-relation 8064. Up to 1001 conditions per place. [2024-06-14 11:22:02,310 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 190 selfloop transitions, 57 changer transitions 0/249 dead transitions. [2024-06-14 11:22:02,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 249 transitions, 2885 flow [2024-06-14 11:22:02,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:22:02,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:22:02,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-14 11:22:02,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3606060606060606 [2024-06-14 11:22:02,311 INFO L175 Difference]: Start difference. First operand has 286 places, 228 transitions, 2315 flow. Second operand 10 states and 119 transitions. [2024-06-14 11:22:02,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 249 transitions, 2885 flow [2024-06-14 11:22:02,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 249 transitions, 2724 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-14 11:22:02,792 INFO L231 Difference]: Finished difference. Result has 287 places, 229 transitions, 2300 flow [2024-06-14 11:22:02,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2154, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2300, PETRI_PLACES=287, PETRI_TRANSITIONS=229} [2024-06-14 11:22:02,792 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 255 predicate places. [2024-06-14 11:22:02,792 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 229 transitions, 2300 flow [2024-06-14 11:22:02,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:02,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:02,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:02,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-14 11:22:02,792 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:22:02,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:02,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1587972947, now seen corresponding path program 13 times [2024-06-14 11:22:02,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:02,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973763749] [2024-06-14 11:22:02,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:02,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:02,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:04,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:04,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:04,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973763749] [2024-06-14 11:22:04,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973763749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:04,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:04,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:22:04,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181864] [2024-06-14 11:22:04,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:04,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:22:04,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:04,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:22:04,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:22:04,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:22:04,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 229 transitions, 2300 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:04,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:04,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:22:04,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:04,604 INFO L124 PetriNetUnfolderBase]: 738/1323 cut-off events. [2024-06-14 11:22:04,604 INFO L125 PetriNetUnfolderBase]: For 122999/123002 co-relation queries the response was YES. [2024-06-14 11:22:04,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8242 conditions, 1323 events. 738/1323 cut-off events. For 122999/123002 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6989 event pairs, 86 based on Foata normal form. 2/1319 useless extension candidates. Maximal degree in co-relation 8096. Up to 1009 conditions per place. [2024-06-14 11:22:04,618 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 179 selfloop transitions, 69 changer transitions 0/250 dead transitions. [2024-06-14 11:22:04,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 250 transitions, 2876 flow [2024-06-14 11:22:04,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:22:04,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:22:04,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-14 11:22:04,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-14 11:22:04,619 INFO L175 Difference]: Start difference. First operand has 287 places, 229 transitions, 2300 flow. Second operand 10 states and 115 transitions. [2024-06-14 11:22:04,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 250 transitions, 2876 flow [2024-06-14 11:22:05,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 250 transitions, 2740 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-14 11:22:05,068 INFO L231 Difference]: Finished difference. Result has 289 places, 230 transitions, 2336 flow [2024-06-14 11:22:05,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2164, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2336, PETRI_PLACES=289, PETRI_TRANSITIONS=230} [2024-06-14 11:22:05,069 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 257 predicate places. [2024-06-14 11:22:05,069 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 230 transitions, 2336 flow [2024-06-14 11:22:05,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:05,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:05,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:05,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-14 11:22:05,069 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:22:05,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:05,069 INFO L85 PathProgramCache]: Analyzing trace with hash 49606453, now seen corresponding path program 11 times [2024-06-14 11:22:05,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:05,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49580586] [2024-06-14 11:22:05,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:05,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:05,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:06,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:06,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:06,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49580586] [2024-06-14 11:22:06,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49580586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:06,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:06,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:22:06,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453355989] [2024-06-14 11:22:06,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:06,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:22:06,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:06,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:22:06,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:22:06,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:22:06,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 230 transitions, 2336 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:06,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:06,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:22:06,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:07,579 INFO L124 PetriNetUnfolderBase]: 744/1333 cut-off events. [2024-06-14 11:22:07,580 INFO L125 PetriNetUnfolderBase]: For 125270/125273 co-relation queries the response was YES. [2024-06-14 11:22:07,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8373 conditions, 1333 events. 744/1333 cut-off events. For 125270/125273 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7046 event pairs, 91 based on Foata normal form. 2/1329 useless extension candidates. Maximal degree in co-relation 8226. Up to 1009 conditions per place. [2024-06-14 11:22:07,593 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 180 selfloop transitions, 72 changer transitions 0/254 dead transitions. [2024-06-14 11:22:07,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 254 transitions, 2958 flow [2024-06-14 11:22:07,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:22:07,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:22:07,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-14 11:22:07,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3443526170798898 [2024-06-14 11:22:07,594 INFO L175 Difference]: Start difference. First operand has 289 places, 230 transitions, 2336 flow. Second operand 11 states and 125 transitions. [2024-06-14 11:22:07,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 254 transitions, 2958 flow [2024-06-14 11:22:08,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 254 transitions, 2796 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-14 11:22:08,004 INFO L231 Difference]: Finished difference. Result has 292 places, 232 transitions, 2389 flow [2024-06-14 11:22:08,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2174, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2389, PETRI_PLACES=292, PETRI_TRANSITIONS=232} [2024-06-14 11:22:08,005 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 260 predicate places. [2024-06-14 11:22:08,005 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 232 transitions, 2389 flow [2024-06-14 11:22:08,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:08,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:08,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:08,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-14 11:22:08,006 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:22:08,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:08,006 INFO L85 PathProgramCache]: Analyzing trace with hash 711911497, now seen corresponding path program 14 times [2024-06-14 11:22:08,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:08,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604373223] [2024-06-14 11:22:08,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:08,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:09,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:09,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:09,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604373223] [2024-06-14 11:22:09,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604373223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:09,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:09,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:22:09,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943791281] [2024-06-14 11:22:09,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:09,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:22:09,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:09,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:22:09,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:22:09,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:22:09,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 232 transitions, 2389 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:09,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:09,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:22:09,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:10,239 INFO L124 PetriNetUnfolderBase]: 748/1341 cut-off events. [2024-06-14 11:22:10,239 INFO L125 PetriNetUnfolderBase]: For 127816/127819 co-relation queries the response was YES. [2024-06-14 11:22:10,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8439 conditions, 1341 events. 748/1341 cut-off events. For 127816/127819 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 7114 event pairs, 102 based on Foata normal form. 2/1337 useless extension candidates. Maximal degree in co-relation 8291. Up to 1007 conditions per place. [2024-06-14 11:22:10,253 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 192 selfloop transitions, 59 changer transitions 0/253 dead transitions. [2024-06-14 11:22:10,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 253 transitions, 2971 flow [2024-06-14 11:22:10,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:22:10,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:22:10,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-14 11:22:10,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3606060606060606 [2024-06-14 11:22:10,254 INFO L175 Difference]: Start difference. First operand has 292 places, 232 transitions, 2389 flow. Second operand 10 states and 119 transitions. [2024-06-14 11:22:10,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 253 transitions, 2971 flow [2024-06-14 11:22:10,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 253 transitions, 2776 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-14 11:22:10,771 INFO L231 Difference]: Finished difference. Result has 293 places, 233 transitions, 2348 flow [2024-06-14 11:22:10,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2194, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2348, PETRI_PLACES=293, PETRI_TRANSITIONS=233} [2024-06-14 11:22:10,772 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 261 predicate places. [2024-06-14 11:22:10,772 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 233 transitions, 2348 flow [2024-06-14 11:22:10,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:10,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:10,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:10,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-14 11:22:10,773 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:22:10,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:10,773 INFO L85 PathProgramCache]: Analyzing trace with hash 712096071, now seen corresponding path program 12 times [2024-06-14 11:22:10,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:10,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322739344] [2024-06-14 11:22:10,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:10,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:10,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:12,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:12,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:12,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322739344] [2024-06-14 11:22:12,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322739344] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:12,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:12,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:22:12,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722262274] [2024-06-14 11:22:12,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:12,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:22:12,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:12,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:22:12,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:22:12,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:22:12,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 233 transitions, 2348 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:12,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:12,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:22:12,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:13,401 INFO L124 PetriNetUnfolderBase]: 754/1351 cut-off events. [2024-06-14 11:22:13,402 INFO L125 PetriNetUnfolderBase]: For 130178/130181 co-relation queries the response was YES. [2024-06-14 11:22:13,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8448 conditions, 1351 events. 754/1351 cut-off events. For 130178/130181 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7172 event pairs, 105 based on Foata normal form. 2/1347 useless extension candidates. Maximal degree in co-relation 8299. Up to 1027 conditions per place. [2024-06-14 11:22:13,416 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 195 selfloop transitions, 60 changer transitions 0/257 dead transitions. [2024-06-14 11:22:13,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 257 transitions, 2970 flow [2024-06-14 11:22:13,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:22:13,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:22:13,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-14 11:22:13,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35537190082644626 [2024-06-14 11:22:13,417 INFO L175 Difference]: Start difference. First operand has 293 places, 233 transitions, 2348 flow. Second operand 11 states and 129 transitions. [2024-06-14 11:22:13,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 257 transitions, 2970 flow [2024-06-14 11:22:13,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 257 transitions, 2826 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-14 11:22:13,853 INFO L231 Difference]: Finished difference. Result has 296 places, 235 transitions, 2391 flow [2024-06-14 11:22:13,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2204, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2391, PETRI_PLACES=296, PETRI_TRANSITIONS=235} [2024-06-14 11:22:13,854 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 264 predicate places. [2024-06-14 11:22:13,854 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 235 transitions, 2391 flow [2024-06-14 11:22:13,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:13,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:13,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:13,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-14 11:22:13,854 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:22:13,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:13,855 INFO L85 PathProgramCache]: Analyzing trace with hash -731849591, now seen corresponding path program 13 times [2024-06-14 11:22:13,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:13,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919891894] [2024-06-14 11:22:13,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:13,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:13,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:16,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:16,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:16,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919891894] [2024-06-14 11:22:16,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919891894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:16,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:16,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:22:16,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537959689] [2024-06-14 11:22:16,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:16,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:22:16,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:16,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:22:16,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:22:16,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:22:16,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 235 transitions, 2391 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:16,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:16,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:22:16,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:16,922 INFO L124 PetriNetUnfolderBase]: 760/1361 cut-off events. [2024-06-14 11:22:16,922 INFO L125 PetriNetUnfolderBase]: For 132318/132321 co-relation queries the response was YES. [2024-06-14 11:22:16,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8484 conditions, 1361 events. 760/1361 cut-off events. For 132318/132321 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7231 event pairs, 75 based on Foata normal form. 2/1357 useless extension candidates. Maximal degree in co-relation 8334. Up to 872 conditions per place. [2024-06-14 11:22:16,936 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 153 selfloop transitions, 111 changer transitions 0/266 dead transitions. [2024-06-14 11:22:16,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 266 transitions, 3250 flow [2024-06-14 11:22:16,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:22:16,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:22:16,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-14 11:22:16,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35353535353535354 [2024-06-14 11:22:16,937 INFO L175 Difference]: Start difference. First operand has 296 places, 235 transitions, 2391 flow. Second operand 12 states and 140 transitions. [2024-06-14 11:22:16,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 266 transitions, 3250 flow [2024-06-14 11:22:17,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 266 transitions, 3087 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-14 11:22:17,469 INFO L231 Difference]: Finished difference. Result has 301 places, 239 transitions, 2508 flow [2024-06-14 11:22:17,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2228, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2508, PETRI_PLACES=301, PETRI_TRANSITIONS=239} [2024-06-14 11:22:17,469 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 269 predicate places. [2024-06-14 11:22:17,469 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 239 transitions, 2508 flow [2024-06-14 11:22:17,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:17,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:17,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:17,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-14 11:22:17,469 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:22:17,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:17,470 INFO L85 PathProgramCache]: Analyzing trace with hash -731857961, now seen corresponding path program 14 times [2024-06-14 11:22:17,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:17,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834795633] [2024-06-14 11:22:17,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:17,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:17,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:19,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:19,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:19,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834795633] [2024-06-14 11:22:19,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834795633] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:19,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:19,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:22:19,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158743607] [2024-06-14 11:22:19,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:19,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:22:19,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:19,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:22:19,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:22:19,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:22:19,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 239 transitions, 2508 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:19,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:19,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:22:19,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:19,679 INFO L124 PetriNetUnfolderBase]: 756/1353 cut-off events. [2024-06-14 11:22:19,679 INFO L125 PetriNetUnfolderBase]: For 122212/122212 co-relation queries the response was YES. [2024-06-14 11:22:19,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8387 conditions, 1353 events. 756/1353 cut-off events. For 122212/122212 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 7211 event pairs, 187 based on Foata normal form. 2/1354 useless extension candidates. Maximal degree in co-relation 8234. Up to 1280 conditions per place. [2024-06-14 11:22:19,693 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 227 selfloop transitions, 26 changer transitions 0/255 dead transitions. [2024-06-14 11:22:19,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 255 transitions, 3054 flow [2024-06-14 11:22:19,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:22:19,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:22:19,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-14 11:22:19,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3168044077134986 [2024-06-14 11:22:19,694 INFO L175 Difference]: Start difference. First operand has 301 places, 239 transitions, 2508 flow. Second operand 11 states and 115 transitions. [2024-06-14 11:22:19,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 255 transitions, 3054 flow [2024-06-14 11:22:20,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 255 transitions, 2794 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-14 11:22:20,070 INFO L231 Difference]: Finished difference. Result has 304 places, 239 transitions, 2305 flow [2024-06-14 11:22:20,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2248, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2305, PETRI_PLACES=304, PETRI_TRANSITIONS=239} [2024-06-14 11:22:20,071 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 272 predicate places. [2024-06-14 11:22:20,071 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 239 transitions, 2305 flow [2024-06-14 11:22:20,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:20,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:20,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:20,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-14 11:22:20,071 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:22:20,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:20,071 INFO L85 PathProgramCache]: Analyzing trace with hash 541213717, now seen corresponding path program 15 times [2024-06-14 11:22:20,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:20,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888287379] [2024-06-14 11:22:20,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:20,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:20,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:21,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:21,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:21,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888287379] [2024-06-14 11:22:21,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888287379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:21,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:21,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:22:21,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983254920] [2024-06-14 11:22:21,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:21,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:22:21,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:21,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:22:21,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:22:21,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:22:21,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 239 transitions, 2305 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:21,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:21,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:22:21,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:22,093 INFO L124 PetriNetUnfolderBase]: 760/1363 cut-off events. [2024-06-14 11:22:22,094 INFO L125 PetriNetUnfolderBase]: For 124554/124557 co-relation queries the response was YES. [2024-06-14 11:22:22,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8180 conditions, 1363 events. 760/1363 cut-off events. For 124554/124557 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7276 event pairs, 112 based on Foata normal form. 2/1359 useless extension candidates. Maximal degree in co-relation 8026. Up to 1049 conditions per place. [2024-06-14 11:22:22,108 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 196 selfloop transitions, 60 changer transitions 0/258 dead transitions. [2024-06-14 11:22:22,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 258 transitions, 2893 flow [2024-06-14 11:22:22,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:22:22,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:22:22,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-14 11:22:22,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-14 11:22:22,109 INFO L175 Difference]: Start difference. First operand has 304 places, 239 transitions, 2305 flow. Second operand 10 states and 115 transitions. [2024-06-14 11:22:22,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 258 transitions, 2893 flow [2024-06-14 11:22:22,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 258 transitions, 2836 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-14 11:22:22,586 INFO L231 Difference]: Finished difference. Result has 304 places, 240 transitions, 2406 flow [2024-06-14 11:22:22,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2248, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2406, PETRI_PLACES=304, PETRI_TRANSITIONS=240} [2024-06-14 11:22:22,586 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 272 predicate places. [2024-06-14 11:22:22,586 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 240 transitions, 2406 flow [2024-06-14 11:22:22,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:22,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:22,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:22,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-14 11:22:22,586 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:22:22,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:22,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1458038605, now seen corresponding path program 15 times [2024-06-14 11:22:22,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:22,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475412758] [2024-06-14 11:22:22,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:22,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:22,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:24,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:24,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:24,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475412758] [2024-06-14 11:22:24,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475412758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:24,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:24,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:22:24,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317731279] [2024-06-14 11:22:24,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:24,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:22:24,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:24,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:22:24,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:22:25,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:22:25,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 240 transitions, 2406 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:25,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:25,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:22:25,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:25,794 INFO L124 PetriNetUnfolderBase]: 766/1373 cut-off events. [2024-06-14 11:22:25,794 INFO L125 PetriNetUnfolderBase]: For 127509/127512 co-relation queries the response was YES. [2024-06-14 11:22:25,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8403 conditions, 1373 events. 766/1373 cut-off events. For 127509/127512 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7343 event pairs, 93 based on Foata normal form. 2/1369 useless extension candidates. Maximal degree in co-relation 8248. Up to 1027 conditions per place. [2024-06-14 11:22:25,808 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 195 selfloop transitions, 69 changer transitions 0/266 dead transitions. [2024-06-14 11:22:25,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 266 transitions, 3062 flow [2024-06-14 11:22:25,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:22:25,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:22:25,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-14 11:22:25,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3581267217630854 [2024-06-14 11:22:25,809 INFO L175 Difference]: Start difference. First operand has 304 places, 240 transitions, 2406 flow. Second operand 11 states and 130 transitions. [2024-06-14 11:22:25,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 266 transitions, 3062 flow [2024-06-14 11:22:26,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 266 transitions, 2914 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-14 11:22:26,296 INFO L231 Difference]: Finished difference. Result has 307 places, 242 transitions, 2471 flow [2024-06-14 11:22:26,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2258, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2471, PETRI_PLACES=307, PETRI_TRANSITIONS=242} [2024-06-14 11:22:26,296 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 275 predicate places. [2024-06-14 11:22:26,296 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 242 transitions, 2471 flow [2024-06-14 11:22:26,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:26,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:26,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:26,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-14 11:22:26,297 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:22:26,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:26,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1457801021, now seen corresponding path program 16 times [2024-06-14 11:22:26,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:26,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018118530] [2024-06-14 11:22:26,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:26,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:26,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:27,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:27,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:27,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018118530] [2024-06-14 11:22:27,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018118530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:27,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:27,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:22:27,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433192535] [2024-06-14 11:22:27,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:27,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:22:27,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:27,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:22:27,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:22:27,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:22:27,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 242 transitions, 2471 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:27,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:27,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:22:27,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:28,242 INFO L124 PetriNetUnfolderBase]: 770/1381 cut-off events. [2024-06-14 11:22:28,243 INFO L125 PetriNetUnfolderBase]: For 129830/129833 co-relation queries the response was YES. [2024-06-14 11:22:28,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8495 conditions, 1381 events. 770/1381 cut-off events. For 129830/129833 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7421 event pairs, 97 based on Foata normal form. 2/1377 useless extension candidates. Maximal degree in co-relation 8339. Up to 1067 conditions per place. [2024-06-14 11:22:28,257 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 201 selfloop transitions, 61 changer transitions 0/264 dead transitions. [2024-06-14 11:22:28,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 264 transitions, 3083 flow [2024-06-14 11:22:28,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:22:28,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:22:28,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-14 11:22:28,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575757575757576 [2024-06-14 11:22:28,258 INFO L175 Difference]: Start difference. First operand has 307 places, 242 transitions, 2471 flow. Second operand 10 states and 118 transitions. [2024-06-14 11:22:28,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 264 transitions, 3083 flow [2024-06-14 11:22:28,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 264 transitions, 2890 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-14 11:22:28,773 INFO L231 Difference]: Finished difference. Result has 308 places, 243 transitions, 2440 flow [2024-06-14 11:22:28,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2278, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2440, PETRI_PLACES=308, PETRI_TRANSITIONS=243} [2024-06-14 11:22:28,774 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 276 predicate places. [2024-06-14 11:22:28,774 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 243 transitions, 2440 flow [2024-06-14 11:22:28,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:28,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:28,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:28,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-14 11:22:28,774 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:22:28,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:28,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1096363389, now seen corresponding path program 17 times [2024-06-14 11:22:28,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:28,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464523437] [2024-06-14 11:22:28,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:28,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:28,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:30,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:30,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:30,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464523437] [2024-06-14 11:22:30,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464523437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:30,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:30,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:22:30,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081362772] [2024-06-14 11:22:30,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:30,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:22:30,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:30,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:22:30,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:22:30,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:22:30,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 243 transitions, 2440 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:30,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:30,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:22:30,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:30,620 INFO L124 PetriNetUnfolderBase]: 774/1389 cut-off events. [2024-06-14 11:22:30,621 INFO L125 PetriNetUnfolderBase]: For 132045/132048 co-relation queries the response was YES. [2024-06-14 11:22:30,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8508 conditions, 1389 events. 774/1389 cut-off events. For 132045/132048 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7459 event pairs, 113 based on Foata normal form. 2/1385 useless extension candidates. Maximal degree in co-relation 8351. Up to 1061 conditions per place. [2024-06-14 11:22:30,635 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 199 selfloop transitions, 61 changer transitions 0/262 dead transitions. [2024-06-14 11:22:30,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 262 transitions, 3040 flow [2024-06-14 11:22:30,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:22:30,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:22:30,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-14 11:22:30,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-14 11:22:30,636 INFO L175 Difference]: Start difference. First operand has 308 places, 243 transitions, 2440 flow. Second operand 10 states and 116 transitions. [2024-06-14 11:22:30,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 262 transitions, 3040 flow [2024-06-14 11:22:31,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 262 transitions, 2888 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-14 11:22:31,155 INFO L231 Difference]: Finished difference. Result has 310 places, 244 transitions, 2452 flow [2024-06-14 11:22:31,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2288, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2452, PETRI_PLACES=310, PETRI_TRANSITIONS=244} [2024-06-14 11:22:31,155 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 278 predicate places. [2024-06-14 11:22:31,155 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 244 transitions, 2452 flow [2024-06-14 11:22:31,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:31,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:31,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:31,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-14 11:22:31,156 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:22:31,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:31,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1091710165, now seen corresponding path program 16 times [2024-06-14 11:22:31,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:31,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366370336] [2024-06-14 11:22:31,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:31,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:31,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:32,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:32,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:32,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366370336] [2024-06-14 11:22:32,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366370336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:32,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:32,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:22:32,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355762382] [2024-06-14 11:22:32,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:32,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:22:32,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:32,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:22:32,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:22:32,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:22:32,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 244 transitions, 2452 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:32,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:32,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:22:32,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:33,516 INFO L124 PetriNetUnfolderBase]: 770/1383 cut-off events. [2024-06-14 11:22:33,516 INFO L125 PetriNetUnfolderBase]: For 120857/120860 co-relation queries the response was YES. [2024-06-14 11:22:33,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8185 conditions, 1383 events. 770/1383 cut-off events. For 120857/120860 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7434 event pairs, 113 based on Foata normal form. 2/1379 useless extension candidates. Maximal degree in co-relation 8027. Up to 1059 conditions per place. [2024-06-14 11:22:33,538 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 198 selfloop transitions, 62 changer transitions 0/262 dead transitions. [2024-06-14 11:22:33,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 262 transitions, 3016 flow [2024-06-14 11:22:33,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:22:33,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:22:33,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-14 11:22:33,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35454545454545455 [2024-06-14 11:22:33,540 INFO L175 Difference]: Start difference. First operand has 310 places, 244 transitions, 2452 flow. Second operand 10 states and 117 transitions. [2024-06-14 11:22:33,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 262 transitions, 3016 flow [2024-06-14 11:22:34,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 262 transitions, 2822 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-14 11:22:34,122 INFO L231 Difference]: Finished difference. Result has 312 places, 244 transitions, 2388 flow [2024-06-14 11:22:34,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2258, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2388, PETRI_PLACES=312, PETRI_TRANSITIONS=244} [2024-06-14 11:22:34,123 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 280 predicate places. [2024-06-14 11:22:34,123 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 244 transitions, 2388 flow [2024-06-14 11:22:34,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:34,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:34,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:34,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-14 11:22:34,124 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:22:34,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:34,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1457807965, now seen corresponding path program 17 times [2024-06-14 11:22:34,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:34,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501504256] [2024-06-14 11:22:34,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:34,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:34,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:35,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:35,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:35,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501504256] [2024-06-14 11:22:35,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501504256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:35,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:35,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:22:35,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234418047] [2024-06-14 11:22:35,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:35,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:22:35,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:35,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:22:35,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:22:35,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:22:35,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 244 transitions, 2388 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:35,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:35,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:22:35,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:36,477 INFO L124 PetriNetUnfolderBase]: 776/1393 cut-off events. [2024-06-14 11:22:36,477 INFO L125 PetriNetUnfolderBase]: For 122570/122573 co-relation queries the response was YES. [2024-06-14 11:22:36,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8206 conditions, 1393 events. 776/1393 cut-off events. For 122570/122573 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7516 event pairs, 97 based on Foata normal form. 2/1389 useless extension candidates. Maximal degree in co-relation 8047. Up to 1069 conditions per place. [2024-06-14 11:22:36,493 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 203 selfloop transitions, 64 changer transitions 0/269 dead transitions. [2024-06-14 11:22:36,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 269 transitions, 3050 flow [2024-06-14 11:22:36,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:22:36,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:22:36,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-14 11:22:36,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3526170798898072 [2024-06-14 11:22:36,494 INFO L175 Difference]: Start difference. First operand has 312 places, 244 transitions, 2388 flow. Second operand 11 states and 128 transitions. [2024-06-14 11:22:36,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 269 transitions, 3050 flow [2024-06-14 11:22:37,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 269 transitions, 2899 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-14 11:22:37,037 INFO L231 Difference]: Finished difference. Result has 313 places, 246 transitions, 2444 flow [2024-06-14 11:22:37,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2237, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2444, PETRI_PLACES=313, PETRI_TRANSITIONS=246} [2024-06-14 11:22:37,037 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 281 predicate places. [2024-06-14 11:22:37,037 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 246 transitions, 2444 flow [2024-06-14 11:22:37,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:37,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:37,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:37,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-14 11:22:37,037 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:22:37,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:37,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1451371931, now seen corresponding path program 18 times [2024-06-14 11:22:37,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:37,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623133991] [2024-06-14 11:22:37,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:37,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:37,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:38,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:38,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:38,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623133991] [2024-06-14 11:22:38,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623133991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:38,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:38,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:22:38,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673207531] [2024-06-14 11:22:38,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:38,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:22:38,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:38,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:22:38,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:22:38,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:22:38,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 246 transitions, 2444 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:38,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:38,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:22:38,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:39,289 INFO L124 PetriNetUnfolderBase]: 780/1401 cut-off events. [2024-06-14 11:22:39,290 INFO L125 PetriNetUnfolderBase]: For 123194/123197 co-relation queries the response was YES. [2024-06-14 11:22:39,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8291 conditions, 1401 events. 780/1401 cut-off events. For 123194/123197 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7538 event pairs, 101 based on Foata normal form. 2/1397 useless extension candidates. Maximal degree in co-relation 8132. Up to 1087 conditions per place. [2024-06-14 11:22:39,301 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 202 selfloop transitions, 62 changer transitions 0/266 dead transitions. [2024-06-14 11:22:39,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 266 transitions, 3058 flow [2024-06-14 11:22:39,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:22:39,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:22:39,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-14 11:22:39,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-14 11:22:39,302 INFO L175 Difference]: Start difference. First operand has 313 places, 246 transitions, 2444 flow. Second operand 10 states and 115 transitions. [2024-06-14 11:22:39,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 266 transitions, 3058 flow [2024-06-14 11:22:39,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 266 transitions, 2871 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-14 11:22:39,880 INFO L231 Difference]: Finished difference. Result has 314 places, 247 transitions, 2425 flow [2024-06-14 11:22:39,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2257, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2425, PETRI_PLACES=314, PETRI_TRANSITIONS=247} [2024-06-14 11:22:39,880 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 282 predicate places. [2024-06-14 11:22:39,880 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 247 transitions, 2425 flow [2024-06-14 11:22:39,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:39,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:39,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:39,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-14 11:22:39,880 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:22:39,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:39,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1096478709, now seen corresponding path program 19 times [2024-06-14 11:22:39,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:39,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116551025] [2024-06-14 11:22:39,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:39,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:39,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:41,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:41,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:41,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116551025] [2024-06-14 11:22:41,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116551025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:41,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:41,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:22:41,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100126101] [2024-06-14 11:22:41,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:41,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:22:41,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:41,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:22:41,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:22:41,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:22:41,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 247 transitions, 2425 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:41,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:41,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:22:41,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:41,884 INFO L124 PetriNetUnfolderBase]: 784/1409 cut-off events. [2024-06-14 11:22:41,884 INFO L125 PetriNetUnfolderBase]: For 125304/125307 co-relation queries the response was YES. [2024-06-14 11:22:41,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8320 conditions, 1409 events. 784/1409 cut-off events. For 125304/125307 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7588 event pairs, 117 based on Foata normal form. 2/1405 useless extension candidates. Maximal degree in co-relation 8160. Up to 998 conditions per place. [2024-06-14 11:22:41,899 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 196 selfloop transitions, 69 changer transitions 0/267 dead transitions. [2024-06-14 11:22:41,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 267 transitions, 3275 flow [2024-06-14 11:22:41,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:22:41,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:22:41,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-14 11:22:41,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-14 11:22:41,900 INFO L175 Difference]: Start difference. First operand has 314 places, 247 transitions, 2425 flow. Second operand 10 states and 116 transitions. [2024-06-14 11:22:41,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 267 transitions, 3275 flow [2024-06-14 11:22:42,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 267 transitions, 3117 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-14 11:22:42,536 INFO L231 Difference]: Finished difference. Result has 316 places, 248 transitions, 2449 flow [2024-06-14 11:22:42,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2267, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2449, PETRI_PLACES=316, PETRI_TRANSITIONS=248} [2024-06-14 11:22:42,537 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 284 predicate places. [2024-06-14 11:22:42,537 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 248 transitions, 2449 flow [2024-06-14 11:22:42,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:42,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:42,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:42,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-14 11:22:42,537 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:22:42,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:42,537 INFO L85 PathProgramCache]: Analyzing trace with hash -955987905, now seen corresponding path program 20 times [2024-06-14 11:22:42,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:42,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549822190] [2024-06-14 11:22:42,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:42,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:42,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:44,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:44,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:44,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549822190] [2024-06-14 11:22:44,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549822190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:44,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:44,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:22:44,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854406377] [2024-06-14 11:22:44,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:44,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:22:44,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:44,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:22:44,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:22:44,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:22:44,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 248 transitions, 2449 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:44,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:44,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:22:44,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:44,766 INFO L124 PetriNetUnfolderBase]: 781/1404 cut-off events. [2024-06-14 11:22:44,766 INFO L125 PetriNetUnfolderBase]: For 113012/113015 co-relation queries the response was YES. [2024-06-14 11:22:44,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8011 conditions, 1404 events. 781/1404 cut-off events. For 113012/113015 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7586 event pairs, 102 based on Foata normal form. 2/1400 useless extension candidates. Maximal degree in co-relation 7850. Up to 1064 conditions per place. [2024-06-14 11:22:44,782 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 200 selfloop transitions, 65 changer transitions 0/267 dead transitions. [2024-06-14 11:22:44,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 267 transitions, 3027 flow [2024-06-14 11:22:44,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:22:44,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:22:44,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-14 11:22:44,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-14 11:22:44,783 INFO L175 Difference]: Start difference. First operand has 316 places, 248 transitions, 2449 flow. Second operand 10 states and 115 transitions. [2024-06-14 11:22:44,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 267 transitions, 3027 flow [2024-06-14 11:22:45,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 267 transitions, 2831 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-14 11:22:45,335 INFO L231 Difference]: Finished difference. Result has 318 places, 248 transitions, 2387 flow [2024-06-14 11:22:45,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2253, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2387, PETRI_PLACES=318, PETRI_TRANSITIONS=248} [2024-06-14 11:22:45,335 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 286 predicate places. [2024-06-14 11:22:45,335 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 248 transitions, 2387 flow [2024-06-14 11:22:45,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:45,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:45,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:45,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-14 11:22:45,336 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:22:45,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:45,336 INFO L85 PathProgramCache]: Analyzing trace with hash -955803331, now seen corresponding path program 18 times [2024-06-14 11:22:45,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:45,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756440681] [2024-06-14 11:22:45,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:45,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:47,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:47,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:47,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756440681] [2024-06-14 11:22:47,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756440681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:47,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:47,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:22:47,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29273568] [2024-06-14 11:22:47,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:47,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:22:47,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:47,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:22:47,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:22:47,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:22:47,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 248 transitions, 2387 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:47,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:47,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:22:47,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:47,979 INFO L124 PetriNetUnfolderBase]: 777/1398 cut-off events. [2024-06-14 11:22:47,980 INFO L125 PetriNetUnfolderBase]: For 99512/99515 co-relation queries the response was YES. [2024-06-14 11:22:47,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7557 conditions, 1398 events. 777/1398 cut-off events. For 99512/99515 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7566 event pairs, 102 based on Foata normal form. 2/1394 useless extension candidates. Maximal degree in co-relation 7396. Up to 1074 conditions per place. [2024-06-14 11:22:47,993 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 202 selfloop transitions, 65 changer transitions 0/269 dead transitions. [2024-06-14 11:22:47,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 269 transitions, 2973 flow [2024-06-14 11:22:47,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:22:47,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:22:47,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-14 11:22:47,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3443526170798898 [2024-06-14 11:22:47,995 INFO L175 Difference]: Start difference. First operand has 318 places, 248 transitions, 2387 flow. Second operand 11 states and 125 transitions. [2024-06-14 11:22:47,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 269 transitions, 2973 flow [2024-06-14 11:22:48,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 269 transitions, 2690 flow, removed 19 selfloop flow, removed 11 redundant places. [2024-06-14 11:22:48,525 INFO L231 Difference]: Finished difference. Result has 318 places, 248 transitions, 2239 flow [2024-06-14 11:22:48,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2104, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2239, PETRI_PLACES=318, PETRI_TRANSITIONS=248} [2024-06-14 11:22:48,526 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 286 predicate places. [2024-06-14 11:22:48,526 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 248 transitions, 2239 flow [2024-06-14 11:22:48,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:48,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:48,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:48,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-14 11:22:48,527 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:22:48,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:48,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1530512098, now seen corresponding path program 1 times [2024-06-14 11:22:48,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:48,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24737074] [2024-06-14 11:22:48,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:48,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:50,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:50,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:50,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24737074] [2024-06-14 11:22:50,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24737074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:50,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:50,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:22:50,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941436846] [2024-06-14 11:22:50,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:50,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:22:50,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:50,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:22:50,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:22:50,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:22:50,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 248 transitions, 2239 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:50,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:50,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:22:50,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:50,751 INFO L124 PetriNetUnfolderBase]: 781/1405 cut-off events. [2024-06-14 11:22:50,751 INFO L125 PetriNetUnfolderBase]: For 99298/99298 co-relation queries the response was YES. [2024-06-14 11:22:50,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7365 conditions, 1405 events. 781/1405 cut-off events. For 99298/99298 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 7632 event pairs, 149 based on Foata normal form. 2/1406 useless extension candidates. Maximal degree in co-relation 7204. Up to 1249 conditions per place. [2024-06-14 11:22:50,762 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 245 selfloop transitions, 24 changer transitions 0/271 dead transitions. [2024-06-14 11:22:50,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 271 transitions, 2863 flow [2024-06-14 11:22:50,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:22:50,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:22:50,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-14 11:22:50,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3085399449035813 [2024-06-14 11:22:50,763 INFO L175 Difference]: Start difference. First operand has 318 places, 248 transitions, 2239 flow. Second operand 11 states and 112 transitions. [2024-06-14 11:22:50,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 271 transitions, 2863 flow [2024-06-14 11:22:51,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 271 transitions, 2638 flow, removed 24 selfloop flow, removed 10 redundant places. [2024-06-14 11:22:51,054 INFO L231 Difference]: Finished difference. Result has 319 places, 249 transitions, 2098 flow [2024-06-14 11:22:51,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2014, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2098, PETRI_PLACES=319, PETRI_TRANSITIONS=249} [2024-06-14 11:22:51,054 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 287 predicate places. [2024-06-14 11:22:51,054 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 249 transitions, 2098 flow [2024-06-14 11:22:51,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:51,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:51,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:51,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-14 11:22:51,055 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:22:51,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:51,055 INFO L85 PathProgramCache]: Analyzing trace with hash -929332042, now seen corresponding path program 2 times [2024-06-14 11:22:51,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:51,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346021075] [2024-06-14 11:22:51,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:51,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:51,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:52,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:52,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:52,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346021075] [2024-06-14 11:22:52,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346021075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:52,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:52,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:22:52,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317324384] [2024-06-14 11:22:52,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:52,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:22:52,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:52,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:22:52,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:22:52,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:22:52,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 249 transitions, 2098 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:52,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:52,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:22:52,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:53,463 INFO L124 PetriNetUnfolderBase]: 785/1413 cut-off events. [2024-06-14 11:22:53,463 INFO L125 PetriNetUnfolderBase]: For 100647/100647 co-relation queries the response was YES. [2024-06-14 11:22:53,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7155 conditions, 1413 events. 785/1413 cut-off events. For 100647/100647 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7711 event pairs, 172 based on Foata normal form. 2/1414 useless extension candidates. Maximal degree in co-relation 6994. Up to 1294 conditions per place. [2024-06-14 11:22:53,479 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 245 selfloop transitions, 25 changer transitions 0/272 dead transitions. [2024-06-14 11:22:53,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 272 transitions, 2726 flow [2024-06-14 11:22:53,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:22:53,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:22:53,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-14 11:22:53,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32231404958677684 [2024-06-14 11:22:53,479 INFO L175 Difference]: Start difference. First operand has 319 places, 249 transitions, 2098 flow. Second operand 11 states and 117 transitions. [2024-06-14 11:22:53,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 272 transitions, 2726 flow [2024-06-14 11:22:53,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 272 transitions, 2652 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-14 11:22:53,851 INFO L231 Difference]: Finished difference. Result has 321 places, 250 transitions, 2112 flow [2024-06-14 11:22:53,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2024, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2112, PETRI_PLACES=321, PETRI_TRANSITIONS=250} [2024-06-14 11:22:53,851 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 289 predicate places. [2024-06-14 11:22:53,851 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 250 transitions, 2112 flow [2024-06-14 11:22:53,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:53,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:53,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:53,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-14 11:22:53,852 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:22:53,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:53,853 INFO L85 PathProgramCache]: Analyzing trace with hash -929337622, now seen corresponding path program 3 times [2024-06-14 11:22:53,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:53,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183453661] [2024-06-14 11:22:53,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:53,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:53,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:55,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:55,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:55,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183453661] [2024-06-14 11:22:55,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183453661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:55,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:55,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:22:55,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542188635] [2024-06-14 11:22:55,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:55,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:22:55,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:55,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:22:55,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:22:55,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:22:55,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 250 transitions, 2112 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:55,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:55,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:22:55,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:56,048 INFO L124 PetriNetUnfolderBase]: 789/1421 cut-off events. [2024-06-14 11:22:56,049 INFO L125 PetriNetUnfolderBase]: For 104465/104465 co-relation queries the response was YES. [2024-06-14 11:22:56,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7202 conditions, 1421 events. 789/1421 cut-off events. For 104465/104465 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 7736 event pairs, 172 based on Foata normal form. 2/1422 useless extension candidates. Maximal degree in co-relation 7040. Up to 1302 conditions per place. [2024-06-14 11:22:56,065 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 247 selfloop transitions, 24 changer transitions 0/273 dead transitions. [2024-06-14 11:22:56,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 273 transitions, 2744 flow [2024-06-14 11:22:56,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:22:56,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:22:56,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-14 11:22:56,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31955922865013775 [2024-06-14 11:22:56,067 INFO L175 Difference]: Start difference. First operand has 321 places, 250 transitions, 2112 flow. Second operand 11 states and 116 transitions. [2024-06-14 11:22:56,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 273 transitions, 2744 flow [2024-06-14 11:22:56,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 273 transitions, 2666 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-14 11:22:56,401 INFO L231 Difference]: Finished difference. Result has 323 places, 251 transitions, 2122 flow [2024-06-14 11:22:56,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2034, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2122, PETRI_PLACES=323, PETRI_TRANSITIONS=251} [2024-06-14 11:22:56,402 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 291 predicate places. [2024-06-14 11:22:56,402 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 251 transitions, 2122 flow [2024-06-14 11:22:56,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:56,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:56,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:56,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-14 11:22:56,402 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:22:56,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:56,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1636438190, now seen corresponding path program 4 times [2024-06-14 11:22:56,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:56,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872848203] [2024-06-14 11:22:56,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:56,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:56,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:57,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:57,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:57,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872848203] [2024-06-14 11:22:57,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872848203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:57,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:57,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:22:57,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627303537] [2024-06-14 11:22:57,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:57,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:22:57,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:57,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:22:57,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:22:57,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:22:57,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 251 transitions, 2122 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:57,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:57,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:22:57,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:58,491 INFO L124 PetriNetUnfolderBase]: 793/1429 cut-off events. [2024-06-14 11:22:58,491 INFO L125 PetriNetUnfolderBase]: For 106383/106383 co-relation queries the response was YES. [2024-06-14 11:22:58,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7249 conditions, 1429 events. 793/1429 cut-off events. For 106383/106383 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 7805 event pairs, 170 based on Foata normal form. 2/1430 useless extension candidates. Maximal degree in co-relation 7086. Up to 1296 conditions per place. [2024-06-14 11:22:58,504 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 247 selfloop transitions, 25 changer transitions 0/274 dead transitions. [2024-06-14 11:22:58,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 274 transitions, 2758 flow [2024-06-14 11:22:58,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:22:58,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:22:58,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-14 11:22:58,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32231404958677684 [2024-06-14 11:22:58,505 INFO L175 Difference]: Start difference. First operand has 323 places, 251 transitions, 2122 flow. Second operand 11 states and 117 transitions. [2024-06-14 11:22:58,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 274 transitions, 2758 flow [2024-06-14 11:22:58,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 274 transitions, 2680 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-14 11:22:58,870 INFO L231 Difference]: Finished difference. Result has 325 places, 252 transitions, 2136 flow [2024-06-14 11:22:58,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2044, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2136, PETRI_PLACES=325, PETRI_TRANSITIONS=252} [2024-06-14 11:22:58,871 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 293 predicate places. [2024-06-14 11:22:58,871 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 252 transitions, 2136 flow [2024-06-14 11:22:58,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:58,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:58,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:58,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-14 11:22:58,871 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:22:58,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:58,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1632863270, now seen corresponding path program 5 times [2024-06-14 11:22:58,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:58,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153498427] [2024-06-14 11:22:58,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:58,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:58,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:00,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:00,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:00,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153498427] [2024-06-14 11:23:00,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153498427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:00,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:00,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:23:00,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616557808] [2024-06-14 11:23:00,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:00,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:23:00,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:00,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:23:00,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:23:00,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:23:00,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 252 transitions, 2136 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:00,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:00,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:23:00,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:01,266 INFO L124 PetriNetUnfolderBase]: 797/1437 cut-off events. [2024-06-14 11:23:01,266 INFO L125 PetriNetUnfolderBase]: For 108430/108430 co-relation queries the response was YES. [2024-06-14 11:23:01,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7304 conditions, 1437 events. 797/1437 cut-off events. For 108430/108430 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 7885 event pairs, 166 based on Foata normal form. 2/1438 useless extension candidates. Maximal degree in co-relation 7140. Up to 1282 conditions per place. [2024-06-14 11:23:01,290 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 247 selfloop transitions, 26 changer transitions 0/275 dead transitions. [2024-06-14 11:23:01,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 275 transitions, 2776 flow [2024-06-14 11:23:01,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:23:01,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:23:01,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-14 11:23:01,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325068870523416 [2024-06-14 11:23:01,293 INFO L175 Difference]: Start difference. First operand has 325 places, 252 transitions, 2136 flow. Second operand 11 states and 118 transitions. [2024-06-14 11:23:01,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 275 transitions, 2776 flow [2024-06-14 11:23:01,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 275 transitions, 2694 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-14 11:23:01,777 INFO L231 Difference]: Finished difference. Result has 327 places, 253 transitions, 2150 flow [2024-06-14 11:23:01,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2054, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2150, PETRI_PLACES=327, PETRI_TRANSITIONS=253} [2024-06-14 11:23:01,777 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 295 predicate places. [2024-06-14 11:23:01,777 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 253 transitions, 2150 flow [2024-06-14 11:23:01,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:01,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:01,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:01,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-14 11:23:01,778 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:23:01,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:01,778 INFO L85 PathProgramCache]: Analyzing trace with hash 921219020, now seen corresponding path program 1 times [2024-06-14 11:23:01,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:01,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845589066] [2024-06-14 11:23:01,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:01,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:01,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:03,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:03,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:03,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845589066] [2024-06-14 11:23:03,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845589066] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:03,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:03,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:23:03,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101675581] [2024-06-14 11:23:03,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:03,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:23:03,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:03,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:23:03,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:23:03,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:23:03,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 253 transitions, 2150 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:03,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:03,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:23:03,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:04,024 INFO L124 PetriNetUnfolderBase]: 813/1473 cut-off events. [2024-06-14 11:23:04,025 INFO L125 PetriNetUnfolderBase]: For 169221/169221 co-relation queries the response was YES. [2024-06-14 11:23:04,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7447 conditions, 1473 events. 813/1473 cut-off events. For 169221/169221 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 8088 event pairs, 186 based on Foata normal form. 10/1482 useless extension candidates. Maximal degree in co-relation 7282. Up to 1300 conditions per place. [2024-06-14 11:23:04,047 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 242 selfloop transitions, 21 changer transitions 16/281 dead transitions. [2024-06-14 11:23:04,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 281 transitions, 2830 flow [2024-06-14 11:23:04,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:23:04,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:23:04,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-14 11:23:04,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3282828282828283 [2024-06-14 11:23:04,048 INFO L175 Difference]: Start difference. First operand has 327 places, 253 transitions, 2150 flow. Second operand 12 states and 130 transitions. [2024-06-14 11:23:04,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 281 transitions, 2830 flow [2024-06-14 11:23:04,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 281 transitions, 2744 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-14 11:23:04,455 INFO L231 Difference]: Finished difference. Result has 330 places, 247 transitions, 2065 flow [2024-06-14 11:23:04,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2064, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2065, PETRI_PLACES=330, PETRI_TRANSITIONS=247} [2024-06-14 11:23:04,456 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 298 predicate places. [2024-06-14 11:23:04,456 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 247 transitions, 2065 flow [2024-06-14 11:23:04,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:04,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:04,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:04,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-14 11:23:04,456 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:23:04,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:04,456 INFO L85 PathProgramCache]: Analyzing trace with hash -418944436, now seen corresponding path program 6 times [2024-06-14 11:23:04,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:04,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090898517] [2024-06-14 11:23:04,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:04,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:04,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:06,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:06,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:06,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090898517] [2024-06-14 11:23:06,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090898517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:06,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:06,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:23:06,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046128329] [2024-06-14 11:23:06,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:06,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:23:06,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:06,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:23:06,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:23:06,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:23:06,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 247 transitions, 2065 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:06,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:06,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:23:06,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:06,901 INFO L124 PetriNetUnfolderBase]: 781/1412 cut-off events. [2024-06-14 11:23:06,901 INFO L125 PetriNetUnfolderBase]: For 111384/111384 co-relation queries the response was YES. [2024-06-14 11:23:06,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7151 conditions, 1412 events. 781/1412 cut-off events. For 111384/111384 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7700 event pairs, 158 based on Foata normal form. 2/1413 useless extension candidates. Maximal degree in co-relation 6985. Up to 1211 conditions per place. [2024-06-14 11:23:06,918 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 228 selfloop transitions, 39 changer transitions 0/269 dead transitions. [2024-06-14 11:23:06,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 269 transitions, 2689 flow [2024-06-14 11:23:06,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:23:06,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:23:06,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-14 11:23:06,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33608815426997246 [2024-06-14 11:23:06,918 INFO L175 Difference]: Start difference. First operand has 330 places, 247 transitions, 2065 flow. Second operand 11 states and 122 transitions. [2024-06-14 11:23:06,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 269 transitions, 2689 flow [2024-06-14 11:23:07,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 269 transitions, 2625 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-06-14 11:23:07,345 INFO L231 Difference]: Finished difference. Result has 323 places, 248 transitions, 2125 flow [2024-06-14 11:23:07,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2005, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2125, PETRI_PLACES=323, PETRI_TRANSITIONS=248} [2024-06-14 11:23:07,346 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 291 predicate places. [2024-06-14 11:23:07,346 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 248 transitions, 2125 flow [2024-06-14 11:23:07,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:07,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:07,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:07,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-14 11:23:07,346 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:23:07,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:07,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1618094050, now seen corresponding path program 7 times [2024-06-14 11:23:07,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:07,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642620188] [2024-06-14 11:23:07,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:07,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:07,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:09,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:09,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:09,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642620188] [2024-06-14 11:23:09,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642620188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:09,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:09,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:23:09,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046934136] [2024-06-14 11:23:09,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:09,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:23:09,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:09,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:23:09,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:23:09,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:23:09,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 248 transitions, 2125 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:09,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:09,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:23:09,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:09,804 INFO L124 PetriNetUnfolderBase]: 785/1420 cut-off events. [2024-06-14 11:23:09,804 INFO L125 PetriNetUnfolderBase]: For 106856/106856 co-relation queries the response was YES. [2024-06-14 11:23:09,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7216 conditions, 1420 events. 785/1420 cut-off events. For 106856/106856 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 7783 event pairs, 156 based on Foata normal form. 2/1421 useless extension candidates. Maximal degree in co-relation 7053. Up to 1219 conditions per place. [2024-06-14 11:23:09,820 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 230 selfloop transitions, 38 changer transitions 0/270 dead transitions. [2024-06-14 11:23:09,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 270 transitions, 2749 flow [2024-06-14 11:23:09,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:23:09,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:23:09,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-14 11:23:09,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 11:23:09,821 INFO L175 Difference]: Start difference. First operand has 323 places, 248 transitions, 2125 flow. Second operand 11 states and 121 transitions. [2024-06-14 11:23:09,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 270 transitions, 2749 flow [2024-06-14 11:23:10,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 270 transitions, 2639 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-14 11:23:10,241 INFO L231 Difference]: Finished difference. Result has 325 places, 249 transitions, 2135 flow [2024-06-14 11:23:10,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2015, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2135, PETRI_PLACES=325, PETRI_TRANSITIONS=249} [2024-06-14 11:23:10,241 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 293 predicate places. [2024-06-14 11:23:10,241 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 249 transitions, 2135 flow [2024-06-14 11:23:10,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:10,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:10,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:10,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-14 11:23:10,242 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:23:10,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:10,242 INFO L85 PathProgramCache]: Analyzing trace with hash 439335448, now seen corresponding path program 8 times [2024-06-14 11:23:10,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:10,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661456333] [2024-06-14 11:23:10,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:10,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:10,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:12,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:12,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:12,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661456333] [2024-06-14 11:23:12,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661456333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:12,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:12,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:23:12,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344955298] [2024-06-14 11:23:12,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:12,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:23:12,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:12,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:23:12,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:23:12,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:23:12,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 249 transitions, 2135 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:12,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:12,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:23:12,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:12,808 INFO L124 PetriNetUnfolderBase]: 789/1428 cut-off events. [2024-06-14 11:23:12,808 INFO L125 PetriNetUnfolderBase]: For 108729/108729 co-relation queries the response was YES. [2024-06-14 11:23:12,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7263 conditions, 1428 events. 789/1428 cut-off events. For 108729/108729 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 7835 event pairs, 156 based on Foata normal form. 2/1429 useless extension candidates. Maximal degree in co-relation 7099. Up to 1227 conditions per place. [2024-06-14 11:23:12,823 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 230 selfloop transitions, 40 changer transitions 0/272 dead transitions. [2024-06-14 11:23:12,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 272 transitions, 2769 flow [2024-06-14 11:23:12,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:23:12,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:23:12,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-14 11:23:12,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33608815426997246 [2024-06-14 11:23:12,824 INFO L175 Difference]: Start difference. First operand has 325 places, 249 transitions, 2135 flow. Second operand 11 states and 122 transitions. [2024-06-14 11:23:12,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 272 transitions, 2769 flow [2024-06-14 11:23:13,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 272 transitions, 2659 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-14 11:23:13,260 INFO L231 Difference]: Finished difference. Result has 327 places, 250 transitions, 2151 flow [2024-06-14 11:23:13,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2025, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2151, PETRI_PLACES=327, PETRI_TRANSITIONS=250} [2024-06-14 11:23:13,260 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 295 predicate places. [2024-06-14 11:23:13,260 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 250 transitions, 2151 flow [2024-06-14 11:23:13,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:13,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:13,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:13,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-14 11:23:13,261 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:23:13,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:13,262 INFO L85 PathProgramCache]: Analyzing trace with hash -557622316, now seen corresponding path program 9 times [2024-06-14 11:23:13,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:13,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739700930] [2024-06-14 11:23:13,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:13,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:13,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:15,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:15,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:15,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739700930] [2024-06-14 11:23:15,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739700930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:15,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:15,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:23:15,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224652966] [2024-06-14 11:23:15,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:15,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:23:15,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:15,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:23:15,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:23:15,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:23:15,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 250 transitions, 2151 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:15,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:15,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:23:15,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:16,354 INFO L124 PetriNetUnfolderBase]: 793/1436 cut-off events. [2024-06-14 11:23:16,354 INFO L125 PetriNetUnfolderBase]: For 110570/110570 co-relation queries the response was YES. [2024-06-14 11:23:16,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7322 conditions, 1436 events. 793/1436 cut-off events. For 110570/110570 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 7892 event pairs, 156 based on Foata normal form. 2/1437 useless extension candidates. Maximal degree in co-relation 7157. Up to 1221 conditions per place. [2024-06-14 11:23:16,369 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 231 selfloop transitions, 39 changer transitions 0/272 dead transitions. [2024-06-14 11:23:16,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 272 transitions, 2783 flow [2024-06-14 11:23:16,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:23:16,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:23:16,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-14 11:23:16,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33608815426997246 [2024-06-14 11:23:16,370 INFO L175 Difference]: Start difference. First operand has 327 places, 250 transitions, 2151 flow. Second operand 11 states and 122 transitions. [2024-06-14 11:23:16,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 272 transitions, 2783 flow [2024-06-14 11:23:16,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 272 transitions, 2667 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-14 11:23:16,782 INFO L231 Difference]: Finished difference. Result has 329 places, 251 transitions, 2161 flow [2024-06-14 11:23:16,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2035, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2161, PETRI_PLACES=329, PETRI_TRANSITIONS=251} [2024-06-14 11:23:16,783 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 297 predicate places. [2024-06-14 11:23:16,783 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 251 transitions, 2161 flow [2024-06-14 11:23:16,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:16,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:16,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:16,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-14 11:23:16,783 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:23:16,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:16,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1096427038, now seen corresponding path program 10 times [2024-06-14 11:23:16,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:16,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683336685] [2024-06-14 11:23:16,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:16,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:16,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:18,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:18,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:18,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683336685] [2024-06-14 11:23:18,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683336685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:18,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:18,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:23:18,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808839095] [2024-06-14 11:23:18,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:18,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:23:18,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:18,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:23:18,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:23:18,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:23:18,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 251 transitions, 2161 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:18,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:18,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:23:18,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:19,356 INFO L124 PetriNetUnfolderBase]: 797/1444 cut-off events. [2024-06-14 11:23:19,356 INFO L125 PetriNetUnfolderBase]: For 112701/112701 co-relation queries the response was YES. [2024-06-14 11:23:19,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7367 conditions, 1444 events. 797/1444 cut-off events. For 112701/112701 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7954 event pairs, 156 based on Foata normal form. 2/1445 useless extension candidates. Maximal degree in co-relation 7201. Up to 1181 conditions per place. [2024-06-14 11:23:19,371 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 228 selfloop transitions, 43 changer transitions 0/273 dead transitions. [2024-06-14 11:23:19,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 273 transitions, 2797 flow [2024-06-14 11:23:19,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:23:19,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:23:19,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-14 11:23:19,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 11:23:19,373 INFO L175 Difference]: Start difference. First operand has 329 places, 251 transitions, 2161 flow. Second operand 11 states and 121 transitions. [2024-06-14 11:23:19,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 273 transitions, 2797 flow [2024-06-14 11:23:19,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 273 transitions, 2681 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-14 11:23:19,850 INFO L231 Difference]: Finished difference. Result has 331 places, 252 transitions, 2181 flow [2024-06-14 11:23:19,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2045, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2181, PETRI_PLACES=331, PETRI_TRANSITIONS=252} [2024-06-14 11:23:19,850 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 299 predicate places. [2024-06-14 11:23:19,850 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 252 transitions, 2181 flow [2024-06-14 11:23:19,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:19,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:19,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:19,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-14 11:23:19,851 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:23:19,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:19,851 INFO L85 PathProgramCache]: Analyzing trace with hash 324852810, now seen corresponding path program 11 times [2024-06-14 11:23:19,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:19,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424971254] [2024-06-14 11:23:19,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:19,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:19,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:21,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:21,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:21,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424971254] [2024-06-14 11:23:21,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424971254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:21,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:21,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:23:21,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630100920] [2024-06-14 11:23:21,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:21,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:23:21,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:21,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:23:21,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:23:21,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:23:21,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 252 transitions, 2181 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:21,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:21,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:23:21,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:22,308 INFO L124 PetriNetUnfolderBase]: 801/1452 cut-off events. [2024-06-14 11:23:22,309 INFO L125 PetriNetUnfolderBase]: For 114662/114662 co-relation queries the response was YES. [2024-06-14 11:23:22,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7434 conditions, 1452 events. 801/1452 cut-off events. For 114662/114662 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8001 event pairs, 166 based on Foata normal form. 2/1453 useless extension candidates. Maximal degree in co-relation 7267. Up to 1251 conditions per place. [2024-06-14 11:23:22,330 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 232 selfloop transitions, 42 changer transitions 0/276 dead transitions. [2024-06-14 11:23:22,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 276 transitions, 2833 flow [2024-06-14 11:23:22,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:23:22,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:23:22,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-14 11:23:22,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33608815426997246 [2024-06-14 11:23:22,331 INFO L175 Difference]: Start difference. First operand has 331 places, 252 transitions, 2181 flow. Second operand 11 states and 122 transitions. [2024-06-14 11:23:22,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 276 transitions, 2833 flow [2024-06-14 11:23:22,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 276 transitions, 2707 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-14 11:23:22,809 INFO L231 Difference]: Finished difference. Result has 333 places, 253 transitions, 2191 flow [2024-06-14 11:23:22,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2055, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2191, PETRI_PLACES=333, PETRI_TRANSITIONS=253} [2024-06-14 11:23:22,809 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 301 predicate places. [2024-06-14 11:23:22,809 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 253 transitions, 2191 flow [2024-06-14 11:23:22,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:22,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:22,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:22,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-14 11:23:22,810 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:23:22,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:22,810 INFO L85 PathProgramCache]: Analyzing trace with hash -621286016, now seen corresponding path program 12 times [2024-06-14 11:23:22,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:22,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653920806] [2024-06-14 11:23:22,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:22,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:24,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:24,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:24,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653920806] [2024-06-14 11:23:24,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653920806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:24,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:24,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:23:24,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005279016] [2024-06-14 11:23:24,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:24,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:23:24,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:24,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:23:24,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:23:24,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:23:24,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 253 transitions, 2191 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:24,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:24,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:23:24,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:25,427 INFO L124 PetriNetUnfolderBase]: 805/1460 cut-off events. [2024-06-14 11:23:25,427 INFO L125 PetriNetUnfolderBase]: For 116552/116552 co-relation queries the response was YES. [2024-06-14 11:23:25,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7483 conditions, 1460 events. 805/1460 cut-off events. For 116552/116552 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8082 event pairs, 168 based on Foata normal form. 2/1461 useless extension candidates. Maximal degree in co-relation 7315. Up to 1259 conditions per place. [2024-06-14 11:23:25,439 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 235 selfloop transitions, 39 changer transitions 0/276 dead transitions. [2024-06-14 11:23:25,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 276 transitions, 2841 flow [2024-06-14 11:23:25,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:23:25,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:23:25,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-14 11:23:25,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 11:23:25,440 INFO L175 Difference]: Start difference. First operand has 333 places, 253 transitions, 2191 flow. Second operand 11 states and 121 transitions. [2024-06-14 11:23:25,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 276 transitions, 2841 flow [2024-06-14 11:23:25,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 276 transitions, 2715 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-14 11:23:25,959 INFO L231 Difference]: Finished difference. Result has 335 places, 254 transitions, 2197 flow [2024-06-14 11:23:25,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2065, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2197, PETRI_PLACES=335, PETRI_TRANSITIONS=254} [2024-06-14 11:23:25,959 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 303 predicate places. [2024-06-14 11:23:25,960 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 254 transitions, 2197 flow [2024-06-14 11:23:25,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:25,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:25,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:25,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-14 11:23:25,960 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:23:25,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:25,960 INFO L85 PathProgramCache]: Analyzing trace with hash 439185718, now seen corresponding path program 13 times [2024-06-14 11:23:25,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:25,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943507626] [2024-06-14 11:23:25,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:25,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:27,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:27,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:27,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943507626] [2024-06-14 11:23:27,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943507626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:27,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:27,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:23:27,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931432897] [2024-06-14 11:23:27,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:27,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:23:27,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:27,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:23:27,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:23:27,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:23:27,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 254 transitions, 2197 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:27,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:27,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:23:27,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:28,489 INFO L124 PetriNetUnfolderBase]: 809/1468 cut-off events. [2024-06-14 11:23:28,490 INFO L125 PetriNetUnfolderBase]: For 118830/118830 co-relation queries the response was YES. [2024-06-14 11:23:28,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7520 conditions, 1468 events. 809/1468 cut-off events. For 118830/118830 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 8145 event pairs, 160 based on Foata normal form. 2/1469 useless extension candidates. Maximal degree in co-relation 7351. Up to 1247 conditions per place. [2024-06-14 11:23:28,507 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 234 selfloop transitions, 41 changer transitions 0/277 dead transitions. [2024-06-14 11:23:28,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 277 transitions, 2851 flow [2024-06-14 11:23:28,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:23:28,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:23:28,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-14 11:23:28,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 11:23:28,508 INFO L175 Difference]: Start difference. First operand has 335 places, 254 transitions, 2197 flow. Second operand 11 states and 121 transitions. [2024-06-14 11:23:28,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 277 transitions, 2851 flow [2024-06-14 11:23:28,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 277 transitions, 2729 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-14 11:23:28,998 INFO L231 Difference]: Finished difference. Result has 337 places, 255 transitions, 2213 flow [2024-06-14 11:23:28,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2075, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2213, PETRI_PLACES=337, PETRI_TRANSITIONS=255} [2024-06-14 11:23:28,998 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 305 predicate places. [2024-06-14 11:23:28,999 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 255 transitions, 2213 flow [2024-06-14 11:23:28,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:28,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:28,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:28,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-14 11:23:28,999 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:23:28,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:28,999 INFO L85 PathProgramCache]: Analyzing trace with hash -413372310, now seen corresponding path program 2 times [2024-06-14 11:23:28,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:28,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807822271] [2024-06-14 11:23:28,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:28,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:31,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:31,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:31,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807822271] [2024-06-14 11:23:31,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807822271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:31,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:31,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:23:31,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604162166] [2024-06-14 11:23:31,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:31,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:23:31,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:31,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:23:31,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:23:31,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:23:31,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 255 transitions, 2213 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:31,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:31,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:23:31,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:31,992 INFO L124 PetriNetUnfolderBase]: 825/1504 cut-off events. [2024-06-14 11:23:31,992 INFO L125 PetriNetUnfolderBase]: For 184277/184277 co-relation queries the response was YES. [2024-06-14 11:23:32,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7631 conditions, 1504 events. 825/1504 cut-off events. For 184277/184277 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8372 event pairs, 172 based on Foata normal form. 10/1513 useless extension candidates. Maximal degree in co-relation 7461. Up to 1249 conditions per place. [2024-06-14 11:23:32,009 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 229 selfloop transitions, 35 changer transitions 16/282 dead transitions. [2024-06-14 11:23:32,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 282 transitions, 2883 flow [2024-06-14 11:23:32,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:23:32,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:23:32,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-14 11:23:32,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-14 11:23:32,010 INFO L175 Difference]: Start difference. First operand has 337 places, 255 transitions, 2213 flow. Second operand 12 states and 135 transitions. [2024-06-14 11:23:32,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 282 transitions, 2883 flow [2024-06-14 11:23:32,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 282 transitions, 2755 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-14 11:23:32,506 INFO L231 Difference]: Finished difference. Result has 340 places, 249 transitions, 2114 flow [2024-06-14 11:23:32,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2085, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2114, PETRI_PLACES=340, PETRI_TRANSITIONS=249} [2024-06-14 11:23:32,507 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 308 predicate places. [2024-06-14 11:23:32,507 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 249 transitions, 2114 flow [2024-06-14 11:23:32,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:32,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:32,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:32,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-14 11:23:32,507 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:23:32,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:32,508 INFO L85 PathProgramCache]: Analyzing trace with hash 638631658, now seen corresponding path program 14 times [2024-06-14 11:23:32,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:32,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270689384] [2024-06-14 11:23:32,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:32,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:32,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:34,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:34,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:34,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270689384] [2024-06-14 11:23:34,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270689384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:34,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:34,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:23:34,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165167342] [2024-06-14 11:23:34,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:34,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:23:34,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:34,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:23:34,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:23:34,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:23:34,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 249 transitions, 2114 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:34,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:34,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:23:34,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:34,891 INFO L124 PetriNetUnfolderBase]: 793/1444 cut-off events. [2024-06-14 11:23:34,891 INFO L125 PetriNetUnfolderBase]: For 121502/121502 co-relation queries the response was YES. [2024-06-14 11:23:34,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7342 conditions, 1444 events. 793/1444 cut-off events. For 121502/121502 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7996 event pairs, 170 based on Foata normal form. 2/1445 useless extension candidates. Maximal degree in co-relation 7171. Up to 1243 conditions per place. [2024-06-14 11:23:34,906 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 231 selfloop transitions, 40 changer transitions 0/273 dead transitions. [2024-06-14 11:23:34,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 273 transitions, 2766 flow [2024-06-14 11:23:34,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:23:34,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:23:34,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-14 11:23:34,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 11:23:34,907 INFO L175 Difference]: Start difference. First operand has 340 places, 249 transitions, 2114 flow. Second operand 11 states and 121 transitions. [2024-06-14 11:23:34,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 273 transitions, 2766 flow [2024-06-14 11:23:35,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 273 transitions, 2674 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-06-14 11:23:35,427 INFO L231 Difference]: Finished difference. Result has 333 places, 250 transitions, 2160 flow [2024-06-14 11:23:35,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2026, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2160, PETRI_PLACES=333, PETRI_TRANSITIONS=250} [2024-06-14 11:23:35,427 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 301 predicate places. [2024-06-14 11:23:35,427 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 250 transitions, 2160 flow [2024-06-14 11:23:35,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:35,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:35,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:35,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-14 11:23:35,428 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:23:35,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:35,429 INFO L85 PathProgramCache]: Analyzing trace with hash -949856798, now seen corresponding path program 15 times [2024-06-14 11:23:35,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:35,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218441048] [2024-06-14 11:23:35,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:35,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:35,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:37,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:37,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:37,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218441048] [2024-06-14 11:23:37,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218441048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:37,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:37,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:23:37,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504701155] [2024-06-14 11:23:37,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:37,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:23:37,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:37,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:23:37,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:23:37,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:23:37,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 250 transitions, 2160 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:37,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:37,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:23:37,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:37,687 INFO L124 PetriNetUnfolderBase]: 797/1452 cut-off events. [2024-06-14 11:23:37,687 INFO L125 PetriNetUnfolderBase]: For 117202/117202 co-relation queries the response was YES. [2024-06-14 11:23:37,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7411 conditions, 1452 events. 797/1452 cut-off events. For 117202/117202 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8047 event pairs, 166 based on Foata normal form. 2/1453 useless extension candidates. Maximal degree in co-relation 7243. Up to 1224 conditions per place. [2024-06-14 11:23:37,702 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 226 selfloop transitions, 47 changer transitions 0/275 dead transitions. [2024-06-14 11:23:37,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 275 transitions, 2818 flow [2024-06-14 11:23:37,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:23:37,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:23:37,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-14 11:23:37,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3415977961432507 [2024-06-14 11:23:37,703 INFO L175 Difference]: Start difference. First operand has 333 places, 250 transitions, 2160 flow. Second operand 11 states and 124 transitions. [2024-06-14 11:23:37,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 275 transitions, 2818 flow [2024-06-14 11:23:38,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 275 transitions, 2694 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-14 11:23:38,214 INFO L231 Difference]: Finished difference. Result has 335 places, 251 transitions, 2186 flow [2024-06-14 11:23:38,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2036, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2186, PETRI_PLACES=335, PETRI_TRANSITIONS=251} [2024-06-14 11:23:38,215 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 303 predicate places. [2024-06-14 11:23:38,215 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 251 transitions, 2186 flow [2024-06-14 11:23:38,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:38,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:38,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:38,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-14 11:23:38,215 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:23:38,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:38,216 INFO L85 PathProgramCache]: Analyzing trace with hash 645996824, now seen corresponding path program 3 times [2024-06-14 11:23:38,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:38,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48903504] [2024-06-14 11:23:38,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:38,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:38,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:40,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:40,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:40,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48903504] [2024-06-14 11:23:40,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48903504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:40,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:40,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:23:40,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049438659] [2024-06-14 11:23:40,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:40,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:23:40,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:40,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:23:40,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:23:40,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:23:40,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 251 transitions, 2186 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:40,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:40,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:23:40,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:41,173 INFO L124 PetriNetUnfolderBase]: 813/1488 cut-off events. [2024-06-14 11:23:41,173 INFO L125 PetriNetUnfolderBase]: For 182162/182162 co-relation queries the response was YES. [2024-06-14 11:23:41,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7522 conditions, 1488 events. 813/1488 cut-off events. For 182162/182162 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8271 event pairs, 170 based on Foata normal form. 10/1497 useless extension candidates. Maximal degree in co-relation 7353. Up to 1216 conditions per place. [2024-06-14 11:23:41,187 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 223 selfloop transitions, 45 changer transitions 11/281 dead transitions. [2024-06-14 11:23:41,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 281 transitions, 2860 flow [2024-06-14 11:23:41,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:23:41,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:23:41,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-14 11:23:41,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3434343434343434 [2024-06-14 11:23:41,188 INFO L175 Difference]: Start difference. First operand has 335 places, 251 transitions, 2186 flow. Second operand 12 states and 136 transitions. [2024-06-14 11:23:41,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 281 transitions, 2860 flow [2024-06-14 11:23:41,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 281 transitions, 2720 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-14 11:23:41,690 INFO L231 Difference]: Finished difference. Result has 338 places, 248 transitions, 2116 flow [2024-06-14 11:23:41,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2046, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2116, PETRI_PLACES=338, PETRI_TRANSITIONS=248} [2024-06-14 11:23:41,690 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 306 predicate places. [2024-06-14 11:23:41,690 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 248 transitions, 2116 flow [2024-06-14 11:23:41,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:41,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:41,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:41,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-14 11:23:41,690 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:23:41,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:41,691 INFO L85 PathProgramCache]: Analyzing trace with hash 646265594, now seen corresponding path program 4 times [2024-06-14 11:23:41,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:41,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326668726] [2024-06-14 11:23:41,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:41,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:41,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:43,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:43,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:43,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326668726] [2024-06-14 11:23:43,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326668726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:43,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:43,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:23:43,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106972516] [2024-06-14 11:23:43,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:43,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:23:43,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:43,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:23:43,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:23:43,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:23:43,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 248 transitions, 2116 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:43,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:43,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:23:43,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:44,665 INFO L124 PetriNetUnfolderBase]: 828/1525 cut-off events. [2024-06-14 11:23:44,665 INFO L125 PetriNetUnfolderBase]: For 248837/248837 co-relation queries the response was YES. [2024-06-14 11:23:44,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8865 conditions, 1525 events. 828/1525 cut-off events. For 248837/248837 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8509 event pairs, 179 based on Foata normal form. 8/1532 useless extension candidates. Maximal degree in co-relation 8695. Up to 1133 conditions per place. [2024-06-14 11:23:44,681 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 223 selfloop transitions, 49 changer transitions 10/284 dead transitions. [2024-06-14 11:23:44,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 284 transitions, 3100 flow [2024-06-14 11:23:44,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:23:44,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:23:44,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-14 11:23:44,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35858585858585856 [2024-06-14 11:23:44,682 INFO L175 Difference]: Start difference. First operand has 338 places, 248 transitions, 2116 flow. Second operand 12 states and 142 transitions. [2024-06-14 11:23:44,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 284 transitions, 3100 flow [2024-06-14 11:23:45,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 284 transitions, 2992 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-14 11:23:45,456 INFO L231 Difference]: Finished difference. Result has 336 places, 244 transitions, 2080 flow [2024-06-14 11:23:45,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2018, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2080, PETRI_PLACES=336, PETRI_TRANSITIONS=244} [2024-06-14 11:23:45,456 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 304 predicate places. [2024-06-14 11:23:45,456 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 244 transitions, 2080 flow [2024-06-14 11:23:45,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:45,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:45,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:45,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-14 11:23:45,457 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:23:45,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:45,457 INFO L85 PathProgramCache]: Analyzing trace with hash -414359590, now seen corresponding path program 5 times [2024-06-14 11:23:45,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:45,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503090526] [2024-06-14 11:23:45,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:45,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:45,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:47,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:47,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:47,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503090526] [2024-06-14 11:23:47,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503090526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:47,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:47,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:23:47,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334977657] [2024-06-14 11:23:47,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:47,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:23:47,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:47,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:23:47,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:23:47,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:23:47,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 244 transitions, 2080 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:47,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:47,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:23:47,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:48,434 INFO L124 PetriNetUnfolderBase]: 814/1503 cut-off events. [2024-06-14 11:23:48,435 INFO L125 PetriNetUnfolderBase]: For 262094/262094 co-relation queries the response was YES. [2024-06-14 11:23:48,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8744 conditions, 1503 events. 814/1503 cut-off events. For 262094/262094 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 8364 event pairs, 187 based on Foata normal form. 10/1512 useless extension candidates. Maximal degree in co-relation 8589. Up to 1204 conditions per place. [2024-06-14 11:23:48,455 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 213 selfloop transitions, 45 changer transitions 15/275 dead transitions. [2024-06-14 11:23:48,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 275 transitions, 2742 flow [2024-06-14 11:23:48,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:23:48,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:23:48,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-14 11:23:48,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-14 11:23:48,456 INFO L175 Difference]: Start difference. First operand has 336 places, 244 transitions, 2080 flow. Second operand 12 states and 138 transitions. [2024-06-14 11:23:48,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 275 transitions, 2742 flow [2024-06-14 11:23:49,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 275 transitions, 2646 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 11:23:49,143 INFO L231 Difference]: Finished difference. Result has 334 places, 238 transitions, 2016 flow [2024-06-14 11:23:49,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1984, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2016, PETRI_PLACES=334, PETRI_TRANSITIONS=238} [2024-06-14 11:23:49,143 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 302 predicate places. [2024-06-14 11:23:49,143 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 238 transitions, 2016 flow [2024-06-14 11:23:49,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:49,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:49,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:49,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-14 11:23:49,144 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:23:49,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:49,144 INFO L85 PathProgramCache]: Analyzing trace with hash 638846984, now seen corresponding path program 6 times [2024-06-14 11:23:49,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:49,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973678409] [2024-06-14 11:23:49,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:49,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:49,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:50,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:50,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:50,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973678409] [2024-06-14 11:23:50,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973678409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:50,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:50,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:23:50,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142413690] [2024-06-14 11:23:50,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:50,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:23:50,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:50,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:23:50,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:23:51,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:23:51,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 238 transitions, 2016 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:51,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:51,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:23:51,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:51,784 INFO L124 PetriNetUnfolderBase]: 799/1478 cut-off events. [2024-06-14 11:23:51,784 INFO L125 PetriNetUnfolderBase]: For 257871/257871 co-relation queries the response was YES. [2024-06-14 11:23:51,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8597 conditions, 1478 events. 799/1478 cut-off events. For 257871/257871 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 8191 event pairs, 191 based on Foata normal form. 10/1487 useless extension candidates. Maximal degree in co-relation 8443. Up to 1233 conditions per place. [2024-06-14 11:23:51,799 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 215 selfloop transitions, 39 changer transitions 11/267 dead transitions. [2024-06-14 11:23:51,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 267 transitions, 2654 flow [2024-06-14 11:23:51,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:23:51,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:23:51,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-14 11:23:51,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3383838383838384 [2024-06-14 11:23:51,800 INFO L175 Difference]: Start difference. First operand has 334 places, 238 transitions, 2016 flow. Second operand 12 states and 134 transitions. [2024-06-14 11:23:51,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 267 transitions, 2654 flow [2024-06-14 11:23:52,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 267 transitions, 2535 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 11:23:52,500 INFO L231 Difference]: Finished difference. Result has 329 places, 235 transitions, 1955 flow [2024-06-14 11:23:52,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1897, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1955, PETRI_PLACES=329, PETRI_TRANSITIONS=235} [2024-06-14 11:23:52,500 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 297 predicate places. [2024-06-14 11:23:52,500 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 235 transitions, 1955 flow [2024-06-14 11:23:52,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:52,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:52,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:52,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-14 11:23:52,500 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:23:52,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:52,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1150938112, now seen corresponding path program 7 times [2024-06-14 11:23:52,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:52,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946816632] [2024-06-14 11:23:52,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:52,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:52,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:54,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:54,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:54,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946816632] [2024-06-14 11:23:54,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946816632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:54,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:54,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:23:54,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353543699] [2024-06-14 11:23:54,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:54,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:23:54,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:54,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:23:54,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:23:54,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:23:54,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 235 transitions, 1955 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:54,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:54,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:23:54,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:55,158 INFO L124 PetriNetUnfolderBase]: 760/1405 cut-off events. [2024-06-14 11:23:55,158 INFO L125 PetriNetUnfolderBase]: For 175688/175688 co-relation queries the response was YES. [2024-06-14 11:23:55,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6944 conditions, 1405 events. 760/1405 cut-off events. For 175688/175688 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7779 event pairs, 170 based on Foata normal form. 10/1414 useless extension candidates. Maximal degree in co-relation 6792. Up to 1160 conditions per place. [2024-06-14 11:23:55,168 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 213 selfloop transitions, 37 changer transitions 11/263 dead transitions. [2024-06-14 11:23:55,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 263 transitions, 2581 flow [2024-06-14 11:23:55,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:23:55,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:23:55,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-14 11:23:55,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3383838383838384 [2024-06-14 11:23:55,169 INFO L175 Difference]: Start difference. First operand has 329 places, 235 transitions, 1955 flow. Second operand 12 states and 134 transitions. [2024-06-14 11:23:55,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 263 transitions, 2581 flow [2024-06-14 11:23:55,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 263 transitions, 2501 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-14 11:23:55,697 INFO L231 Difference]: Finished difference. Result has 328 places, 232 transitions, 1929 flow [2024-06-14 11:23:55,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1875, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1929, PETRI_PLACES=328, PETRI_TRANSITIONS=232} [2024-06-14 11:23:55,697 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 296 predicate places. [2024-06-14 11:23:55,697 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 232 transitions, 1929 flow [2024-06-14 11:23:55,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:55,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:55,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:55,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-14 11:23:55,698 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:23:55,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:55,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1576086190, now seen corresponding path program 16 times [2024-06-14 11:23:55,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:55,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332197474] [2024-06-14 11:23:55,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:55,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:55,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:57,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:57,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:57,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332197474] [2024-06-14 11:23:57,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332197474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:57,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:57,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:23:57,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937938021] [2024-06-14 11:23:57,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:57,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:23:57,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:57,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:23:57,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:23:57,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:23:57,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 232 transitions, 1929 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:57,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:57,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:23:57,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:58,595 INFO L124 PetriNetUnfolderBase]: 754/1401 cut-off events. [2024-06-14 11:23:58,595 INFO L125 PetriNetUnfolderBase]: For 192907/192910 co-relation queries the response was YES. [2024-06-14 11:23:58,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6990 conditions, 1401 events. 754/1401 cut-off events. For 192907/192910 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7745 event pairs, 132 based on Foata normal form. 12/1407 useless extension candidates. Maximal degree in co-relation 6838. Up to 961 conditions per place. [2024-06-14 11:23:58,610 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 182 selfloop transitions, 70 changer transitions 7/261 dead transitions. [2024-06-14 11:23:58,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 261 transitions, 2607 flow [2024-06-14 11:23:58,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:23:58,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:23:58,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-14 11:23:58,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3746556473829201 [2024-06-14 11:23:58,611 INFO L175 Difference]: Start difference. First operand has 328 places, 232 transitions, 1929 flow. Second operand 11 states and 136 transitions. [2024-06-14 11:23:58,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 261 transitions, 2607 flow [2024-06-14 11:23:59,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 261 transitions, 2529 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 11:23:59,139 INFO L231 Difference]: Finished difference. Result has 324 places, 230 transitions, 2025 flow [2024-06-14 11:23:59,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1851, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2025, PETRI_PLACES=324, PETRI_TRANSITIONS=230} [2024-06-14 11:23:59,140 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 292 predicate places. [2024-06-14 11:23:59,140 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 230 transitions, 2025 flow [2024-06-14 11:23:59,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:59,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:59,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:59,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-14 11:23:59,140 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:23:59,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:59,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1576362896, now seen corresponding path program 8 times [2024-06-14 11:23:59,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:59,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203278064] [2024-06-14 11:23:59,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:59,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:59,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:00,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:00,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:00,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203278064] [2024-06-14 11:24:00,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203278064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:00,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:00,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:24:00,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484253859] [2024-06-14 11:24:00,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:00,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:24:00,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:00,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:24:00,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:24:01,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:24:01,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 230 transitions, 2025 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:01,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:01,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:24:01,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:01,753 INFO L124 PetriNetUnfolderBase]: 778/1453 cut-off events. [2024-06-14 11:24:01,753 INFO L125 PetriNetUnfolderBase]: For 252485/252488 co-relation queries the response was YES. [2024-06-14 11:24:01,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8912 conditions, 1453 events. 778/1453 cut-off events. For 252485/252488 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 8045 event pairs, 142 based on Foata normal form. 8/1455 useless extension candidates. Maximal degree in co-relation 8761. Up to 917 conditions per place. [2024-06-14 11:24:01,769 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 185 selfloop transitions, 68 changer transitions 9/264 dead transitions. [2024-06-14 11:24:01,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 264 transitions, 3001 flow [2024-06-14 11:24:01,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:24:01,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:24:01,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-14 11:24:01,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38292011019283745 [2024-06-14 11:24:01,770 INFO L175 Difference]: Start difference. First operand has 324 places, 230 transitions, 2025 flow. Second operand 11 states and 139 transitions. [2024-06-14 11:24:01,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 264 transitions, 3001 flow [2024-06-14 11:24:02,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 264 transitions, 2803 flow, removed 27 selfloop flow, removed 11 redundant places. [2024-06-14 11:24:02,608 INFO L231 Difference]: Finished difference. Result has 325 places, 228 transitions, 2014 flow [2024-06-14 11:24:02,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1827, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2014, PETRI_PLACES=325, PETRI_TRANSITIONS=228} [2024-06-14 11:24:02,608 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 293 predicate places. [2024-06-14 11:24:02,608 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 228 transitions, 2014 flow [2024-06-14 11:24:02,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:02,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:02,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:02,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-14 11:24:02,609 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:24:02,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:02,609 INFO L85 PathProgramCache]: Analyzing trace with hash 801232710, now seen corresponding path program 9 times [2024-06-14 11:24:02,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:02,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790630237] [2024-06-14 11:24:02,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:02,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:02,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:04,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:04,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:04,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790630237] [2024-06-14 11:24:04,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790630237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:04,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:04,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:24:04,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912184475] [2024-06-14 11:24:04,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:04,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:24:04,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:04,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:24:04,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:24:04,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:24:04,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 228 transitions, 2014 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:04,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:04,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:24:04,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:05,547 INFO L124 PetriNetUnfolderBase]: 766/1433 cut-off events. [2024-06-14 11:24:05,547 INFO L125 PetriNetUnfolderBase]: For 271576/271579 co-relation queries the response was YES. [2024-06-14 11:24:05,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8775 conditions, 1433 events. 766/1433 cut-off events. For 271576/271579 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 7923 event pairs, 146 based on Foata normal form. 10/1437 useless extension candidates. Maximal degree in co-relation 8623. Up to 1037 conditions per place. [2024-06-14 11:24:05,563 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 183 selfloop transitions, 62 changer transitions 11/258 dead transitions. [2024-06-14 11:24:05,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 258 transitions, 2638 flow [2024-06-14 11:24:05,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:24:05,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:24:05,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-14 11:24:05,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35858585858585856 [2024-06-14 11:24:05,564 INFO L175 Difference]: Start difference. First operand has 325 places, 228 transitions, 2014 flow. Second operand 12 states and 142 transitions. [2024-06-14 11:24:05,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 258 transitions, 2638 flow [2024-06-14 11:24:06,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 258 transitions, 2508 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 11:24:06,361 INFO L231 Difference]: Finished difference. Result has 323 places, 225 transitions, 1986 flow [2024-06-14 11:24:06,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1884, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1986, PETRI_PLACES=323, PETRI_TRANSITIONS=225} [2024-06-14 11:24:06,362 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 291 predicate places. [2024-06-14 11:24:06,362 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 225 transitions, 1986 flow [2024-06-14 11:24:06,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:06,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:06,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:06,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-14 11:24:06,362 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:24:06,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:06,363 INFO L85 PathProgramCache]: Analyzing trace with hash 2015877514, now seen corresponding path program 10 times [2024-06-14 11:24:06,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:06,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561597037] [2024-06-14 11:24:06,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:06,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:06,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:08,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:08,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:08,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561597037] [2024-06-14 11:24:08,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561597037] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:08,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:08,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:24:08,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697512587] [2024-06-14 11:24:08,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:08,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:24:08,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:08,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:24:08,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:24:08,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:24:08,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 225 transitions, 1986 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:08,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:08,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:24:08,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:09,267 INFO L124 PetriNetUnfolderBase]: 787/1480 cut-off events. [2024-06-14 11:24:09,267 INFO L125 PetriNetUnfolderBase]: For 323227/323230 co-relation queries the response was YES. [2024-06-14 11:24:09,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10137 conditions, 1480 events. 787/1480 cut-off events. For 323227/323230 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 8246 event pairs, 139 based on Foata normal form. 8/1482 useless extension candidates. Maximal degree in co-relation 9987. Up to 995 conditions per place. [2024-06-14 11:24:09,284 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 177 selfloop transitions, 76 changer transitions 8/263 dead transitions. [2024-06-14 11:24:09,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 263 transitions, 2922 flow [2024-06-14 11:24:09,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:24:09,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:24:09,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-14 11:24:09,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3686868686868687 [2024-06-14 11:24:09,285 INFO L175 Difference]: Start difference. First operand has 323 places, 225 transitions, 1986 flow. Second operand 12 states and 146 transitions. [2024-06-14 11:24:09,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 263 transitions, 2922 flow [2024-06-14 11:24:10,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 263 transitions, 2790 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 11:24:10,241 INFO L231 Difference]: Finished difference. Result has 322 places, 225 transitions, 2022 flow [2024-06-14 11:24:10,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1858, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2022, PETRI_PLACES=322, PETRI_TRANSITIONS=225} [2024-06-14 11:24:10,241 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 290 predicate places. [2024-06-14 11:24:10,242 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 225 transitions, 2022 flow [2024-06-14 11:24:10,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:10,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:10,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:10,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-14 11:24:10,242 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:24:10,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:10,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1212489802, now seen corresponding path program 11 times [2024-06-14 11:24:10,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:10,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517456872] [2024-06-14 11:24:10,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:10,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:10,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:11,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:11,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:11,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517456872] [2024-06-14 11:24:11,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517456872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:11,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:11,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:24:11,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645922641] [2024-06-14 11:24:11,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:11,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:24:11,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:11,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:24:11,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:24:11,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:24:11,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 225 transitions, 2022 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:11,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:11,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:24:11,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:12,664 INFO L124 PetriNetUnfolderBase]: 811/1532 cut-off events. [2024-06-14 11:24:12,664 INFO L125 PetriNetUnfolderBase]: For 409011/409014 co-relation queries the response was YES. [2024-06-14 11:24:12,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12011 conditions, 1532 events. 811/1532 cut-off events. For 409011/409014 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 8618 event pairs, 149 based on Foata normal form. 8/1534 useless extension candidates. Maximal degree in co-relation 11861. Up to 817 conditions per place. [2024-06-14 11:24:12,682 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 141 selfloop transitions, 110 changer transitions 9/262 dead transitions. [2024-06-14 11:24:12,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 262 transitions, 3000 flow [2024-06-14 11:24:12,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:24:12,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:24:12,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-14 11:24:12,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-14 11:24:12,682 INFO L175 Difference]: Start difference. First operand has 322 places, 225 transitions, 2022 flow. Second operand 12 states and 150 transitions. [2024-06-14 11:24:12,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 262 transitions, 3000 flow [2024-06-14 11:24:13,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 262 transitions, 2855 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 11:24:13,760 INFO L231 Difference]: Finished difference. Result has 323 places, 223 transitions, 2148 flow [2024-06-14 11:24:13,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1881, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2148, PETRI_PLACES=323, PETRI_TRANSITIONS=223} [2024-06-14 11:24:13,760 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 291 predicate places. [2024-06-14 11:24:13,760 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 223 transitions, 2148 flow [2024-06-14 11:24:13,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:13,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:13,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:13,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-14 11:24:13,761 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:24:13,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:13,761 INFO L85 PathProgramCache]: Analyzing trace with hash 793873124, now seen corresponding path program 17 times [2024-06-14 11:24:13,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:13,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290849626] [2024-06-14 11:24:13,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:13,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:13,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:15,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:15,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:15,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290849626] [2024-06-14 11:24:15,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290849626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:15,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:15,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:24:15,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871559616] [2024-06-14 11:24:15,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:15,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:24:15,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:15,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:24:15,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:24:15,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:24:15,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 223 transitions, 2148 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:15,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:15,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:24:15,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:16,316 INFO L124 PetriNetUnfolderBase]: 787/1488 cut-off events. [2024-06-14 11:24:16,316 INFO L125 PetriNetUnfolderBase]: For 360640/360643 co-relation queries the response was YES. [2024-06-14 11:24:16,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12015 conditions, 1488 events. 787/1488 cut-off events. For 360640/360643 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 8326 event pairs, 169 based on Foata normal form. 2/1484 useless extension candidates. Maximal degree in co-relation 11865. Up to 1166 conditions per place. [2024-06-14 11:24:16,333 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 187 selfloop transitions, 58 changer transitions 0/247 dead transitions. [2024-06-14 11:24:16,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 247 transitions, 2750 flow [2024-06-14 11:24:16,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:24:16,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:24:16,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-14 11:24:16,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3526170798898072 [2024-06-14 11:24:16,337 INFO L175 Difference]: Start difference. First operand has 323 places, 223 transitions, 2148 flow. Second operand 11 states and 128 transitions. [2024-06-14 11:24:16,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 247 transitions, 2750 flow [2024-06-14 11:24:17,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 247 transitions, 2530 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 11:24:17,395 INFO L231 Difference]: Finished difference. Result has 321 places, 224 transitions, 2104 flow [2024-06-14 11:24:17,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1928, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2104, PETRI_PLACES=321, PETRI_TRANSITIONS=224} [2024-06-14 11:24:17,395 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 289 predicate places. [2024-06-14 11:24:17,395 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 224 transitions, 2104 flow [2024-06-14 11:24:17,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:17,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:17,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:17,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-14 11:24:17,396 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:24:17,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:17,397 INFO L85 PathProgramCache]: Analyzing trace with hash 793867544, now seen corresponding path program 18 times [2024-06-14 11:24:17,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:17,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368153483] [2024-06-14 11:24:17,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:17,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:17,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:19,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:19,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:19,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368153483] [2024-06-14 11:24:19,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368153483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:19,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:19,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:24:19,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175476246] [2024-06-14 11:24:19,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:19,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:24:19,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:19,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:24:19,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:24:19,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:24:19,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 224 transitions, 2104 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:19,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:19,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:24:19,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:19,821 INFO L124 PetriNetUnfolderBase]: 791/1496 cut-off events. [2024-06-14 11:24:19,821 INFO L125 PetriNetUnfolderBase]: For 356314/356317 co-relation queries the response was YES. [2024-06-14 11:24:19,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11960 conditions, 1496 events. 791/1496 cut-off events. For 356314/356317 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 8415 event pairs, 177 based on Foata normal form. 2/1492 useless extension candidates. Maximal degree in co-relation 11811. Up to 1174 conditions per place. [2024-06-14 11:24:19,838 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 189 selfloop transitions, 57 changer transitions 0/248 dead transitions. [2024-06-14 11:24:19,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 248 transitions, 2712 flow [2024-06-14 11:24:19,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:24:19,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:24:19,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-14 11:24:19,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.349862258953168 [2024-06-14 11:24:19,839 INFO L175 Difference]: Start difference. First operand has 321 places, 224 transitions, 2104 flow. Second operand 11 states and 127 transitions. [2024-06-14 11:24:19,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 248 transitions, 2712 flow [2024-06-14 11:24:20,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 248 transitions, 2548 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-14 11:24:20,975 INFO L231 Difference]: Finished difference. Result has 323 places, 225 transitions, 2118 flow [2024-06-14 11:24:20,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1940, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2118, PETRI_PLACES=323, PETRI_TRANSITIONS=225} [2024-06-14 11:24:20,975 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 291 predicate places. [2024-06-14 11:24:20,975 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 225 transitions, 2118 flow [2024-06-14 11:24:20,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:20,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:20,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:20,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-14 11:24:20,976 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:24:20,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:20,976 INFO L85 PathProgramCache]: Analyzing trace with hash 2015868214, now seen corresponding path program 12 times [2024-06-14 11:24:20,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:20,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781264146] [2024-06-14 11:24:20,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:20,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:20,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:22,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:22,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:22,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781264146] [2024-06-14 11:24:22,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781264146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:22,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:22,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:24:22,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449986381] [2024-06-14 11:24:22,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:22,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:24:22,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:22,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:24:22,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:24:22,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:24:22,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 225 transitions, 2118 flow. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:22,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:22,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:24:22,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:23,171 INFO L124 PetriNetUnfolderBase]: 823/1568 cut-off events. [2024-06-14 11:24:23,171 INFO L125 PetriNetUnfolderBase]: For 492534/492537 co-relation queries the response was YES. [2024-06-14 11:24:23,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12213 conditions, 1568 events. 823/1568 cut-off events. For 492534/492537 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 8970 event pairs, 163 based on Foata normal form. 20/1582 useless extension candidates. Maximal degree in co-relation 12063. Up to 953 conditions per place. [2024-06-14 11:24:23,189 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 130 selfloop transitions, 106 changer transitions 15/253 dead transitions. [2024-06-14 11:24:23,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 253 transitions, 2728 flow [2024-06-14 11:24:23,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:24:23,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:24:23,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-14 11:24:23,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36639118457300274 [2024-06-14 11:24:23,190 INFO L175 Difference]: Start difference. First operand has 323 places, 225 transitions, 2118 flow. Second operand 11 states and 133 transitions. [2024-06-14 11:24:23,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 253 transitions, 2728 flow [2024-06-14 11:24:24,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 253 transitions, 2560 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-14 11:24:24,296 INFO L231 Difference]: Finished difference. Result has 325 places, 218 transitions, 2108 flow [2024-06-14 11:24:24,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1950, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2108, PETRI_PLACES=325, PETRI_TRANSITIONS=218} [2024-06-14 11:24:24,296 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 293 predicate places. [2024-06-14 11:24:24,297 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 218 transitions, 2108 flow [2024-06-14 11:24:24,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:24,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:24,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:24,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-14 11:24:24,297 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:24:24,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:24,297 INFO L85 PathProgramCache]: Analyzing trace with hash 2015600808, now seen corresponding path program 19 times [2024-06-14 11:24:24,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:24,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29671620] [2024-06-14 11:24:24,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:24,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:26,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:26,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:26,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29671620] [2024-06-14 11:24:26,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29671620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:26,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:26,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:24:26,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015821660] [2024-06-14 11:24:26,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:26,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:24:26,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:26,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:24:26,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:24:26,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:24:26,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 218 transitions, 2108 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:26,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:26,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:24:26,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:26,833 INFO L124 PetriNetUnfolderBase]: 775/1472 cut-off events. [2024-06-14 11:24:26,833 INFO L125 PetriNetUnfolderBase]: For 366828/366831 co-relation queries the response was YES. [2024-06-14 11:24:26,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11996 conditions, 1472 events. 775/1472 cut-off events. For 366828/366831 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 8266 event pairs, 165 based on Foata normal form. 2/1468 useless extension candidates. Maximal degree in co-relation 11845. Up to 1136 conditions per place. [2024-06-14 11:24:26,849 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 170 selfloop transitions, 71 changer transitions 0/243 dead transitions. [2024-06-14 11:24:26,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 243 transitions, 2712 flow [2024-06-14 11:24:26,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:24:26,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:24:26,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-14 11:24:26,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3526170798898072 [2024-06-14 11:24:26,850 INFO L175 Difference]: Start difference. First operand has 325 places, 218 transitions, 2108 flow. Second operand 11 states and 128 transitions. [2024-06-14 11:24:26,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 243 transitions, 2712 flow [2024-06-14 11:24:27,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 243 transitions, 2482 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-14 11:24:27,917 INFO L231 Difference]: Finished difference. Result has 319 places, 219 transitions, 2086 flow [2024-06-14 11:24:27,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1878, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2086, PETRI_PLACES=319, PETRI_TRANSITIONS=219} [2024-06-14 11:24:27,918 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 287 predicate places. [2024-06-14 11:24:27,918 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 219 transitions, 2086 flow [2024-06-14 11:24:27,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:27,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:27,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:27,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-14 11:24:27,918 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:24:27,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:27,918 INFO L85 PathProgramCache]: Analyzing trace with hash 794082870, now seen corresponding path program 13 times [2024-06-14 11:24:27,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:27,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911935675] [2024-06-14 11:24:27,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:27,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:27,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:30,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:30,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:30,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911935675] [2024-06-14 11:24:30,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911935675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:30,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:30,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:24:30,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505248160] [2024-06-14 11:24:30,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:30,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:24:30,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:30,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:24:30,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:24:30,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:24:30,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 219 transitions, 2086 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:30,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:30,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:24:30,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:31,521 INFO L124 PetriNetUnfolderBase]: 791/1508 cut-off events. [2024-06-14 11:24:31,522 INFO L125 PetriNetUnfolderBase]: For 412700/412703 co-relation queries the response was YES. [2024-06-14 11:24:31,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11939 conditions, 1508 events. 791/1508 cut-off events. For 412700/412703 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 8524 event pairs, 179 based on Foata normal form. 10/1512 useless extension candidates. Maximal degree in co-relation 11791. Up to 1136 conditions per place. [2024-06-14 11:24:31,539 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 180 selfloop transitions, 57 changer transitions 9/248 dead transitions. [2024-06-14 11:24:31,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 248 transitions, 2686 flow [2024-06-14 11:24:31,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:24:31,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:24:31,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-14 11:24:31,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3560606060606061 [2024-06-14 11:24:31,540 INFO L175 Difference]: Start difference. First operand has 319 places, 219 transitions, 2086 flow. Second operand 12 states and 141 transitions. [2024-06-14 11:24:31,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 248 transitions, 2686 flow [2024-06-14 11:24:32,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 248 transitions, 2488 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-14 11:24:32,520 INFO L231 Difference]: Finished difference. Result has 322 places, 216 transitions, 1982 flow [2024-06-14 11:24:32,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1888, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1982, PETRI_PLACES=322, PETRI_TRANSITIONS=216} [2024-06-14 11:24:32,520 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 290 predicate places. [2024-06-14 11:24:32,520 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 216 transitions, 1982 flow [2024-06-14 11:24:32,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:32,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:32,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:32,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-14 11:24:32,520 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:24:32,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:32,521 INFO L85 PathProgramCache]: Analyzing trace with hash 594571334, now seen corresponding path program 20 times [2024-06-14 11:24:32,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:32,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467169630] [2024-06-14 11:24:32,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:32,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:32,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:34,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:34,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:34,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467169630] [2024-06-14 11:24:34,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467169630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:34,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:34,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:24:34,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965158148] [2024-06-14 11:24:34,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:34,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:24:34,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:34,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:24:34,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:24:34,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:24:34,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 216 transitions, 1982 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:34,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:34,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:24:34,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:35,295 INFO L124 PetriNetUnfolderBase]: 769/1466 cut-off events. [2024-06-14 11:24:35,296 INFO L125 PetriNetUnfolderBase]: For 360970/360973 co-relation queries the response was YES. [2024-06-14 11:24:35,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11740 conditions, 1466 events. 769/1466 cut-off events. For 360970/360973 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 8269 event pairs, 179 based on Foata normal form. 2/1462 useless extension candidates. Maximal degree in co-relation 11591. Up to 1144 conditions per place. [2024-06-14 11:24:35,313 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 180 selfloop transitions, 57 changer transitions 0/239 dead transitions. [2024-06-14 11:24:35,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 239 transitions, 2566 flow [2024-06-14 11:24:35,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:24:35,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:24:35,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-14 11:24:35,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3526170798898072 [2024-06-14 11:24:35,314 INFO L175 Difference]: Start difference. First operand has 322 places, 216 transitions, 1982 flow. Second operand 11 states and 128 transitions. [2024-06-14 11:24:35,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 239 transitions, 2566 flow [2024-06-14 11:24:36,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 239 transitions, 2446 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-14 11:24:36,345 INFO L231 Difference]: Finished difference. Result has 319 places, 217 transitions, 2038 flow [2024-06-14 11:24:36,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1862, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2038, PETRI_PLACES=319, PETRI_TRANSITIONS=217} [2024-06-14 11:24:36,346 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 287 predicate places. [2024-06-14 11:24:36,346 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 217 transitions, 2038 flow [2024-06-14 11:24:36,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:36,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:36,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:36,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-14 11:24:36,346 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:24:36,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:36,346 INFO L85 PathProgramCache]: Analyzing trace with hash 2015608744, now seen corresponding path program 14 times [2024-06-14 11:24:36,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:36,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307365458] [2024-06-14 11:24:36,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:36,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:36,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:38,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:38,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:38,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307365458] [2024-06-14 11:24:38,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307365458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:38,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:38,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:24:38,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365609995] [2024-06-14 11:24:38,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:38,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:24:38,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:38,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:24:38,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:24:38,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:24:38,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 217 transitions, 2038 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:38,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:38,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:24:38,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:39,171 INFO L124 PetriNetUnfolderBase]: 785/1502 cut-off events. [2024-06-14 11:24:39,171 INFO L125 PetriNetUnfolderBase]: For 412721/412724 co-relation queries the response was YES. [2024-06-14 11:24:39,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11845 conditions, 1502 events. 785/1502 cut-off events. For 412721/412724 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 8550 event pairs, 161 based on Foata normal form. 10/1506 useless extension candidates. Maximal degree in co-relation 11697. Up to 1122 conditions per place. [2024-06-14 11:24:39,188 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 165 selfloop transitions, 69 changer transitions 11/247 dead transitions. [2024-06-14 11:24:39,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 247 transitions, 2640 flow [2024-06-14 11:24:39,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:24:39,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:24:39,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-14 11:24:39,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35353535353535354 [2024-06-14 11:24:39,189 INFO L175 Difference]: Start difference. First operand has 319 places, 217 transitions, 2038 flow. Second operand 12 states and 140 transitions. [2024-06-14 11:24:39,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 247 transitions, 2640 flow [2024-06-14 11:24:40,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 247 transitions, 2476 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-14 11:24:40,297 INFO L231 Difference]: Finished difference. Result has 322 places, 214 transitions, 1992 flow [2024-06-14 11:24:40,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1874, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1992, PETRI_PLACES=322, PETRI_TRANSITIONS=214} [2024-06-14 11:24:40,297 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 290 predicate places. [2024-06-14 11:24:40,297 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 214 transitions, 1992 flow [2024-06-14 11:24:40,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:40,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:40,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:40,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-14 11:24:40,298 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:24:40,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:40,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1212499102, now seen corresponding path program 15 times [2024-06-14 11:24:40,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:40,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026474130] [2024-06-14 11:24:40,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:40,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:40,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:41,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:41,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:41,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026474130] [2024-06-14 11:24:41,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026474130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:41,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:41,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:24:41,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069263094] [2024-06-14 11:24:41,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:41,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:24:41,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:41,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:24:41,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:24:42,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:24:42,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 214 transitions, 1992 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:42,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:42,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:24:42,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:42,758 INFO L124 PetriNetUnfolderBase]: 772/1483 cut-off events. [2024-06-14 11:24:42,759 INFO L125 PetriNetUnfolderBase]: For 417752/417755 co-relation queries the response was YES. [2024-06-14 11:24:42,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11466 conditions, 1483 events. 772/1483 cut-off events. For 417752/417755 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 8423 event pairs, 152 based on Foata normal form. 12/1489 useless extension candidates. Maximal degree in co-relation 11317. Up to 888 conditions per place. [2024-06-14 11:24:42,776 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 132 selfloop transitions, 97 changer transitions 15/246 dead transitions. [2024-06-14 11:24:42,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 246 transitions, 2598 flow [2024-06-14 11:24:42,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:24:42,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:24:42,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 153 transitions. [2024-06-14 11:24:42,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35664335664335667 [2024-06-14 11:24:42,777 INFO L175 Difference]: Start difference. First operand has 322 places, 214 transitions, 1992 flow. Second operand 13 states and 153 transitions. [2024-06-14 11:24:42,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 246 transitions, 2598 flow [2024-06-14 11:24:43,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 246 transitions, 2456 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 11:24:43,995 INFO L231 Difference]: Finished difference. Result has 321 places, 206 transitions, 1983 flow [2024-06-14 11:24:43,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1850, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1983, PETRI_PLACES=321, PETRI_TRANSITIONS=206} [2024-06-14 11:24:43,995 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 289 predicate places. [2024-06-14 11:24:43,996 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 206 transitions, 1983 flow [2024-06-14 11:24:43,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:43,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:43,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:43,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-14 11:24:43,996 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:24:43,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:43,996 INFO L85 PathProgramCache]: Analyzing trace with hash 594565754, now seen corresponding path program 21 times [2024-06-14 11:24:43,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:43,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758919367] [2024-06-14 11:24:43,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:43,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:44,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:46,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:46,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:46,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758919367] [2024-06-14 11:24:46,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758919367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:46,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:46,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:24:46,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634229917] [2024-06-14 11:24:46,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:46,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:24:46,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:46,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:24:46,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:24:46,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:24:46,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 206 transitions, 1983 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:46,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:46,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:24:46,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:47,207 INFO L124 PetriNetUnfolderBase]: 738/1417 cut-off events. [2024-06-14 11:24:47,207 INFO L125 PetriNetUnfolderBase]: For 340722/340725 co-relation queries the response was YES. [2024-06-14 11:24:47,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11331 conditions, 1417 events. 738/1417 cut-off events. For 340722/340725 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 7939 event pairs, 170 based on Foata normal form. 2/1413 useless extension candidates. Maximal degree in co-relation 11183. Up to 1073 conditions per place. [2024-06-14 11:24:47,223 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 171 selfloop transitions, 60 changer transitions 0/233 dead transitions. [2024-06-14 11:24:47,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 233 transitions, 2569 flow [2024-06-14 11:24:47,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:24:47,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:24:47,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 145 transitions. [2024-06-14 11:24:47,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.337995337995338 [2024-06-14 11:24:47,224 INFO L175 Difference]: Start difference. First operand has 321 places, 206 transitions, 1983 flow. Second operand 13 states and 145 transitions. [2024-06-14 11:24:47,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 233 transitions, 2569 flow [2024-06-14 11:24:48,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 233 transitions, 2309 flow, removed 27 selfloop flow, removed 17 redundant places. [2024-06-14 11:24:48,321 INFO L231 Difference]: Finished difference. Result has 314 places, 207 transitions, 1911 flow [2024-06-14 11:24:48,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1723, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1911, PETRI_PLACES=314, PETRI_TRANSITIONS=207} [2024-06-14 11:24:48,321 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 282 predicate places. [2024-06-14 11:24:48,321 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 207 transitions, 1911 flow [2024-06-14 11:24:48,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:48,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:48,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:48,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-14 11:24:48,322 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:24:48,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:48,323 INFO L85 PathProgramCache]: Analyzing trace with hash 594421604, now seen corresponding path program 22 times [2024-06-14 11:24:48,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:48,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752052702] [2024-06-14 11:24:48,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:48,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:48,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:50,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:50,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:50,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752052702] [2024-06-14 11:24:50,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752052702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:50,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:50,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:24:50,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057446083] [2024-06-14 11:24:50,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:50,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:24:50,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:50,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:24:50,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:24:50,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:24:50,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 207 transitions, 1911 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:50,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:50,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:24:50,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:50,797 INFO L124 PetriNetUnfolderBase]: 742/1425 cut-off events. [2024-06-14 11:24:50,797 INFO L125 PetriNetUnfolderBase]: For 336092/336095 co-relation queries the response was YES. [2024-06-14 11:24:50,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11208 conditions, 1425 events. 742/1425 cut-off events. For 336092/336095 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 8028 event pairs, 166 based on Foata normal form. 2/1421 useless extension candidates. Maximal degree in co-relation 11063. Up to 1083 conditions per place. [2024-06-14 11:24:50,813 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 170 selfloop transitions, 58 changer transitions 0/230 dead transitions. [2024-06-14 11:24:50,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 230 transitions, 2485 flow [2024-06-14 11:24:50,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:24:50,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:24:50,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-14 11:24:50,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.349862258953168 [2024-06-14 11:24:50,814 INFO L175 Difference]: Start difference. First operand has 314 places, 207 transitions, 1911 flow. Second operand 11 states and 127 transitions. [2024-06-14 11:24:50,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 230 transitions, 2485 flow [2024-06-14 11:24:51,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 230 transitions, 2307 flow, removed 30 selfloop flow, removed 11 redundant places. [2024-06-14 11:24:51,765 INFO L231 Difference]: Finished difference. Result has 314 places, 208 transitions, 1919 flow [2024-06-14 11:24:51,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1733, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1919, PETRI_PLACES=314, PETRI_TRANSITIONS=208} [2024-06-14 11:24:51,766 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 282 predicate places. [2024-06-14 11:24:51,766 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 208 transitions, 1919 flow [2024-06-14 11:24:51,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:51,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:51,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:51,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-14 11:24:51,766 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:24:51,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:51,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1511856722, now seen corresponding path program 23 times [2024-06-14 11:24:51,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:51,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977240748] [2024-06-14 11:24:51,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:51,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:51,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:53,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:53,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:53,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977240748] [2024-06-14 11:24:53,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977240748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:53,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:53,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:24:53,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937529559] [2024-06-14 11:24:53,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:53,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:24:53,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:53,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:24:53,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:24:53,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:24:53,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 208 transitions, 1919 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:53,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:53,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:24:53,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:54,295 INFO L124 PetriNetUnfolderBase]: 746/1433 cut-off events. [2024-06-14 11:24:54,295 INFO L125 PetriNetUnfolderBase]: For 341831/341834 co-relation queries the response was YES. [2024-06-14 11:24:54,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11287 conditions, 1433 events. 746/1433 cut-off events. For 341831/341834 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 8069 event pairs, 160 based on Foata normal form. 2/1429 useless extension candidates. Maximal degree in co-relation 11141. Up to 1111 conditions per place. [2024-06-14 11:24:54,311 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 160 selfloop transitions, 69 changer transitions 0/231 dead transitions. [2024-06-14 11:24:54,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 231 transitions, 2499 flow [2024-06-14 11:24:54,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:24:54,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:24:54,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-14 11:24:54,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3415977961432507 [2024-06-14 11:24:54,312 INFO L175 Difference]: Start difference. First operand has 314 places, 208 transitions, 1919 flow. Second operand 11 states and 124 transitions. [2024-06-14 11:24:54,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 231 transitions, 2499 flow [2024-06-14 11:24:55,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 231 transitions, 2323 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-14 11:24:55,283 INFO L231 Difference]: Finished difference. Result has 316 places, 209 transitions, 1953 flow [2024-06-14 11:24:55,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1743, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1953, PETRI_PLACES=316, PETRI_TRANSITIONS=209} [2024-06-14 11:24:55,284 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 284 predicate places. [2024-06-14 11:24:55,284 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 209 transitions, 1953 flow [2024-06-14 11:24:55,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:55,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:55,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:55,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-14 11:24:55,284 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:24:55,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:55,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1375004876, now seen corresponding path program 16 times [2024-06-14 11:24:55,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:55,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652679796] [2024-06-14 11:24:55,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:55,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:55,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:57,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:57,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:57,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652679796] [2024-06-14 11:24:57,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652679796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:57,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:57,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:24:57,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2765076] [2024-06-14 11:24:57,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:57,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:24:57,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:57,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:24:57,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:24:57,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:24:57,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 209 transitions, 1953 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:57,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:57,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:24:57,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:58,263 INFO L124 PetriNetUnfolderBase]: 762/1469 cut-off events. [2024-06-14 11:24:58,263 INFO L125 PetriNetUnfolderBase]: For 403982/403985 co-relation queries the response was YES. [2024-06-14 11:24:58,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11410 conditions, 1469 events. 762/1469 cut-off events. For 403982/403985 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 8333 event pairs, 178 based on Foata normal form. 10/1473 useless extension candidates. Maximal degree in co-relation 11263. Up to 1103 conditions per place. [2024-06-14 11:24:58,279 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 169 selfloop transitions, 55 changer transitions 11/237 dead transitions. [2024-06-14 11:24:58,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 237 transitions, 2527 flow [2024-06-14 11:24:58,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:24:58,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:24:58,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-14 11:24:58,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35353535353535354 [2024-06-14 11:24:58,280 INFO L175 Difference]: Start difference. First operand has 316 places, 209 transitions, 1953 flow. Second operand 12 states and 140 transitions. [2024-06-14 11:24:58,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 237 transitions, 2527 flow [2024-06-14 11:24:59,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 237 transitions, 2327 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-14 11:24:59,293 INFO L231 Difference]: Finished difference. Result has 319 places, 206 transitions, 1841 flow [2024-06-14 11:24:59,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1753, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1841, PETRI_PLACES=319, PETRI_TRANSITIONS=206} [2024-06-14 11:24:59,294 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 287 predicate places. [2024-06-14 11:24:59,294 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 206 transitions, 1841 flow [2024-06-14 11:24:59,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:59,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:59,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:59,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-14 11:24:59,294 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:24:59,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:59,294 INFO L85 PathProgramCache]: Analyzing trace with hash 372624716, now seen corresponding path program 24 times [2024-06-14 11:24:59,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:59,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99582145] [2024-06-14 11:24:59,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:59,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:01,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:01,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:01,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99582145] [2024-06-14 11:25:01,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99582145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:01,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:01,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:25:01,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214479592] [2024-06-14 11:25:01,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:01,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:25:01,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:01,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:25:01,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:25:01,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:25:01,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 206 transitions, 1841 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:01,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:01,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:25:01,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:01,830 INFO L124 PetriNetUnfolderBase]: 733/1414 cut-off events. [2024-06-14 11:25:01,831 INFO L125 PetriNetUnfolderBase]: For 334010/334013 co-relation queries the response was YES. [2024-06-14 11:25:01,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10753 conditions, 1414 events. 733/1414 cut-off events. For 334010/334013 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 7986 event pairs, 179 based on Foata normal form. 2/1410 useless extension candidates. Maximal degree in co-relation 10605. Up to 1092 conditions per place. [2024-06-14 11:25:01,845 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 164 selfloop transitions, 60 changer transitions 0/226 dead transitions. [2024-06-14 11:25:01,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 226 transitions, 2337 flow [2024-06-14 11:25:01,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:25:01,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:25:01,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-14 11:25:01,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3415977961432507 [2024-06-14 11:25:01,846 INFO L175 Difference]: Start difference. First operand has 319 places, 206 transitions, 1841 flow. Second operand 11 states and 124 transitions. [2024-06-14 11:25:01,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 226 transitions, 2337 flow [2024-06-14 11:25:02,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 226 transitions, 2223 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 11:25:02,745 INFO L231 Difference]: Finished difference. Result has 316 places, 206 transitions, 1851 flow [2024-06-14 11:25:02,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1727, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1851, PETRI_PLACES=316, PETRI_TRANSITIONS=206} [2024-06-14 11:25:02,745 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 284 predicate places. [2024-06-14 11:25:02,745 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 206 transitions, 1851 flow [2024-06-14 11:25:02,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:02,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:02,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:02,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-14 11:25:02,746 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:25:02,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:02,746 INFO L85 PathProgramCache]: Analyzing trace with hash 2008243578, now seen corresponding path program 25 times [2024-06-14 11:25:02,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:02,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526767931] [2024-06-14 11:25:02,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:02,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:04,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:04,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:04,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526767931] [2024-06-14 11:25:04,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526767931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:04,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:04,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:25:04,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920203743] [2024-06-14 11:25:04,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:04,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:25:04,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:04,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:25:04,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:25:04,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:25:04,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 206 transitions, 1851 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:04,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:04,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:25:04,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:05,421 INFO L124 PetriNetUnfolderBase]: 737/1422 cut-off events. [2024-06-14 11:25:05,421 INFO L125 PetriNetUnfolderBase]: For 330724/330727 co-relation queries the response was YES. [2024-06-14 11:25:05,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10874 conditions, 1422 events. 737/1422 cut-off events. For 330724/330727 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 8026 event pairs, 159 based on Foata normal form. 2/1418 useless extension candidates. Maximal degree in co-relation 10727. Up to 1100 conditions per place. [2024-06-14 11:25:05,433 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 159 selfloop transitions, 68 changer transitions 0/229 dead transitions. [2024-06-14 11:25:05,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 229 transitions, 2429 flow [2024-06-14 11:25:05,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:25:05,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:25:05,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-14 11:25:05,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33884297520661155 [2024-06-14 11:25:05,434 INFO L175 Difference]: Start difference. First operand has 316 places, 206 transitions, 1851 flow. Second operand 11 states and 123 transitions. [2024-06-14 11:25:05,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 229 transitions, 2429 flow [2024-06-14 11:25:06,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 229 transitions, 2247 flow, removed 27 selfloop flow, removed 10 redundant places. [2024-06-14 11:25:06,345 INFO L231 Difference]: Finished difference. Result has 317 places, 207 transitions, 1879 flow [2024-06-14 11:25:06,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1669, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1879, PETRI_PLACES=317, PETRI_TRANSITIONS=207} [2024-06-14 11:25:06,346 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 285 predicate places. [2024-06-14 11:25:06,346 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 207 transitions, 1879 flow [2024-06-14 11:25:06,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:06,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:06,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:06,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-14 11:25:06,346 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:25:06,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:06,347 INFO L85 PathProgramCache]: Analyzing trace with hash 372619136, now seen corresponding path program 26 times [2024-06-14 11:25:06,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:06,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766992334] [2024-06-14 11:25:06,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:06,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:06,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:08,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:08,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:08,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766992334] [2024-06-14 11:25:08,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766992334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:08,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:08,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:25:08,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797751093] [2024-06-14 11:25:08,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:08,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:25:08,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:08,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:25:08,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:25:08,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:25:08,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 207 transitions, 1879 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:08,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:08,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:25:08,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:09,013 INFO L124 PetriNetUnfolderBase]: 741/1430 cut-off events. [2024-06-14 11:25:09,013 INFO L125 PetriNetUnfolderBase]: For 336728/336731 co-relation queries the response was YES. [2024-06-14 11:25:09,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10999 conditions, 1430 events. 741/1430 cut-off events. For 336728/336731 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 8062 event pairs, 177 based on Foata normal form. 2/1426 useless extension candidates. Maximal degree in co-relation 10851. Up to 1108 conditions per place. [2024-06-14 11:25:09,030 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 167 selfloop transitions, 59 changer transitions 0/228 dead transitions. [2024-06-14 11:25:09,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 228 transitions, 2449 flow [2024-06-14 11:25:09,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:25:09,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:25:09,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-14 11:25:09,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33884297520661155 [2024-06-14 11:25:09,031 INFO L175 Difference]: Start difference. First operand has 317 places, 207 transitions, 1879 flow. Second operand 11 states and 123 transitions. [2024-06-14 11:25:09,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 228 transitions, 2449 flow [2024-06-14 11:25:10,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 228 transitions, 2249 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-14 11:25:10,118 INFO L231 Difference]: Finished difference. Result has 319 places, 208 transitions, 1873 flow [2024-06-14 11:25:10,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1679, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1873, PETRI_PLACES=319, PETRI_TRANSITIONS=208} [2024-06-14 11:25:10,118 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 287 predicate places. [2024-06-14 11:25:10,118 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 208 transitions, 1873 flow [2024-06-14 11:25:10,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:10,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:10,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:10,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-14 11:25:10,118 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:25:10,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:10,119 INFO L85 PathProgramCache]: Analyzing trace with hash -402386430, now seen corresponding path program 27 times [2024-06-14 11:25:10,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:10,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367797281] [2024-06-14 11:25:10,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:10,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:10,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:11,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:11,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:11,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367797281] [2024-06-14 11:25:11,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367797281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:11,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:11,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:25:11,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482533037] [2024-06-14 11:25:11,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:11,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:25:11,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:11,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:25:11,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:25:12,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:25:12,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 208 transitions, 1873 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:12,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:12,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:25:12,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:12,617 INFO L124 PetriNetUnfolderBase]: 745/1438 cut-off events. [2024-06-14 11:25:12,617 INFO L125 PetriNetUnfolderBase]: For 342834/342837 co-relation queries the response was YES. [2024-06-14 11:25:12,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11038 conditions, 1438 events. 745/1438 cut-off events. For 342834/342837 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 8178 event pairs, 187 based on Foata normal form. 2/1434 useless extension candidates. Maximal degree in co-relation 10889. Up to 903 conditions per place. [2024-06-14 11:25:12,633 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 142 selfloop transitions, 85 changer transitions 0/229 dead transitions. [2024-06-14 11:25:12,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 229 transitions, 2447 flow [2024-06-14 11:25:12,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:25:12,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:25:12,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-14 11:25:12,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.349862258953168 [2024-06-14 11:25:12,634 INFO L175 Difference]: Start difference. First operand has 319 places, 208 transitions, 1873 flow. Second operand 11 states and 127 transitions. [2024-06-14 11:25:12,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 229 transitions, 2447 flow [2024-06-14 11:25:13,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 229 transitions, 2263 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-14 11:25:13,562 INFO L231 Difference]: Finished difference. Result has 321 places, 209 transitions, 1937 flow [2024-06-14 11:25:13,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1689, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1937, PETRI_PLACES=321, PETRI_TRANSITIONS=209} [2024-06-14 11:25:13,562 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 289 predicate places. [2024-06-14 11:25:13,562 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 209 transitions, 1937 flow [2024-06-14 11:25:13,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:13,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:13,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:13,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-14 11:25:13,563 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:25:13,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:13,563 INFO L85 PathProgramCache]: Analyzing trace with hash -258136424, now seen corresponding path program 17 times [2024-06-14 11:25:13,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:13,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544014333] [2024-06-14 11:25:13,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:13,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:13,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:15,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:15,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:15,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544014333] [2024-06-14 11:25:15,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544014333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:15,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:15,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:25:15,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95310855] [2024-06-14 11:25:15,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:15,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:25:15,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:15,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:25:15,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:25:15,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:25:15,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 209 transitions, 1937 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:15,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:15,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:25:15,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:16,064 INFO L124 PetriNetUnfolderBase]: 740/1435 cut-off events. [2024-06-14 11:25:16,064 INFO L125 PetriNetUnfolderBase]: For 376940/376943 co-relation queries the response was YES. [2024-06-14 11:25:16,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9749 conditions, 1435 events. 740/1435 cut-off events. For 376940/376943 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 8152 event pairs, 178 based on Foata normal form. 16/1445 useless extension candidates. Maximal degree in co-relation 9599. Up to 1039 conditions per place. [2024-06-14 11:25:16,080 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 161 selfloop transitions, 56 changer transitions 16/235 dead transitions. [2024-06-14 11:25:16,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 235 transitions, 2501 flow [2024-06-14 11:25:16,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:25:16,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:25:16,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-14 11:25:16,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34595959595959597 [2024-06-14 11:25:16,081 INFO L175 Difference]: Start difference. First operand has 321 places, 209 transitions, 1937 flow. Second operand 12 states and 137 transitions. [2024-06-14 11:25:16,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 235 transitions, 2501 flow [2024-06-14 11:25:17,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 235 transitions, 2263 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-14 11:25:17,002 INFO L231 Difference]: Finished difference. Result has 324 places, 203 transitions, 1771 flow [2024-06-14 11:25:17,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1699, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1771, PETRI_PLACES=324, PETRI_TRANSITIONS=203} [2024-06-14 11:25:17,003 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 292 predicate places. [2024-06-14 11:25:17,003 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 203 transitions, 1771 flow [2024-06-14 11:25:17,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:17,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:17,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:17,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-14 11:25:17,003 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:25:17,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:17,003 INFO L85 PathProgramCache]: Analyzing trace with hash -405961350, now seen corresponding path program 28 times [2024-06-14 11:25:17,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:17,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478993980] [2024-06-14 11:25:17,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:17,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:17,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:18,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:18,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:18,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478993980] [2024-06-14 11:25:18,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478993980] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:18,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:18,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:25:18,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434226237] [2024-06-14 11:25:18,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:18,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:25:18,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:18,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:25:18,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:25:18,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:25:18,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 203 transitions, 1771 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:18,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:18,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:25:18,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:19,411 INFO L124 PetriNetUnfolderBase]: 700/1355 cut-off events. [2024-06-14 11:25:19,412 INFO L125 PetriNetUnfolderBase]: For 273632/273635 co-relation queries the response was YES. [2024-06-14 11:25:19,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9402 conditions, 1355 events. 700/1355 cut-off events. For 273632/273635 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 7653 event pairs, 158 based on Foata normal form. 2/1351 useless extension candidates. Maximal degree in co-relation 9251. Up to 939 conditions per place. [2024-06-14 11:25:19,426 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 155 selfloop transitions, 67 changer transitions 0/224 dead transitions. [2024-06-14 11:25:19,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 224 transitions, 2337 flow [2024-06-14 11:25:19,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:25:19,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:25:19,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-14 11:25:19,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33884297520661155 [2024-06-14 11:25:19,428 INFO L175 Difference]: Start difference. First operand has 324 places, 203 transitions, 1771 flow. Second operand 11 states and 123 transitions. [2024-06-14 11:25:19,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 224 transitions, 2337 flow [2024-06-14 11:25:20,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 224 transitions, 2203 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-14 11:25:20,197 INFO L231 Difference]: Finished difference. Result has 317 places, 204 transitions, 1851 flow [2024-06-14 11:25:20,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1637, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1851, PETRI_PLACES=317, PETRI_TRANSITIONS=204} [2024-06-14 11:25:20,197 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 285 predicate places. [2024-06-14 11:25:20,197 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 204 transitions, 1851 flow [2024-06-14 11:25:20,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:20,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:20,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:20,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-14 11:25:20,197 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:25:20,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:20,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1474932888, now seen corresponding path program 18 times [2024-06-14 11:25:20,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:20,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960507289] [2024-06-14 11:25:20,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:20,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:20,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:21,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:21,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:21,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960507289] [2024-06-14 11:25:21,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960507289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:21,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:21,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:25:21,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480974374] [2024-06-14 11:25:21,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:21,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:25:21,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:21,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:25:21,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:25:21,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:25:21,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 204 transitions, 1851 flow. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:21,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:21,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:25:21,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:22,512 INFO L124 PetriNetUnfolderBase]: 741/1442 cut-off events. [2024-06-14 11:25:22,512 INFO L125 PetriNetUnfolderBase]: For 386008/386011 co-relation queries the response was YES. [2024-06-14 11:25:22,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10952 conditions, 1442 events. 741/1442 cut-off events. For 386008/386011 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 8229 event pairs, 153 based on Foata normal form. 8/1444 useless extension candidates. Maximal degree in co-relation 10803. Up to 775 conditions per place. [2024-06-14 11:25:22,528 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 135 selfloop transitions, 90 changer transitions 10/237 dead transitions. [2024-06-14 11:25:22,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 237 transitions, 2717 flow [2024-06-14 11:25:22,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:25:22,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:25:22,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 11:25:22,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371900826446281 [2024-06-14 11:25:22,529 INFO L175 Difference]: Start difference. First operand has 317 places, 204 transitions, 1851 flow. Second operand 11 states and 135 transitions. [2024-06-14 11:25:22,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 237 transitions, 2717 flow [2024-06-14 11:25:23,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 237 transitions, 2513 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-14 11:25:23,501 INFO L231 Difference]: Finished difference. Result has 319 places, 201 transitions, 1810 flow [2024-06-14 11:25:23,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1647, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1810, PETRI_PLACES=319, PETRI_TRANSITIONS=201} [2024-06-14 11:25:23,501 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 287 predicate places. [2024-06-14 11:25:23,501 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 201 transitions, 1810 flow [2024-06-14 11:25:23,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:23,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:23,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:23,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-14 11:25:23,501 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:25:23,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:23,502 INFO L85 PathProgramCache]: Analyzing trace with hash 2008458904, now seen corresponding path program 19 times [2024-06-14 11:25:23,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:23,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305326296] [2024-06-14 11:25:23,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:23,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:23,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:25,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:25,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:25,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305326296] [2024-06-14 11:25:25,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305326296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:25,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:25,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:25:25,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136322206] [2024-06-14 11:25:25,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:25,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:25:25,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:25,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:25:25,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:25:25,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:25:25,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 201 transitions, 1810 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:25,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:25,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:25:25,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:25,956 INFO L124 PetriNetUnfolderBase]: 700/1363 cut-off events. [2024-06-14 11:25:25,956 INFO L125 PetriNetUnfolderBase]: For 328354/328357 co-relation queries the response was YES. [2024-06-14 11:25:25,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9381 conditions, 1363 events. 700/1363 cut-off events. For 328354/328357 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 7689 event pairs, 162 based on Foata normal form. 10/1367 useless extension candidates. Maximal degree in co-relation 9231. Up to 991 conditions per place. [2024-06-14 11:25:25,972 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 151 selfloop transitions, 67 changer transitions 7/227 dead transitions. [2024-06-14 11:25:25,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 227 transitions, 2362 flow [2024-06-14 11:25:25,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:25:25,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:25:25,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-14 11:25:25,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35537190082644626 [2024-06-14 11:25:25,973 INFO L175 Difference]: Start difference. First operand has 319 places, 201 transitions, 1810 flow. Second operand 11 states and 129 transitions. [2024-06-14 11:25:25,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 227 transitions, 2362 flow [2024-06-14 11:25:26,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 227 transitions, 2176 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-14 11:25:26,786 INFO L231 Difference]: Finished difference. Result has 315 places, 198 transitions, 1743 flow [2024-06-14 11:25:26,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1624, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1743, PETRI_PLACES=315, PETRI_TRANSITIONS=198} [2024-06-14 11:25:26,786 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 283 predicate places. [2024-06-14 11:25:26,786 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 198 transitions, 1743 flow [2024-06-14 11:25:26,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:26,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:26,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:26,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-14 11:25:26,787 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:25:26,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:26,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1474656182, now seen corresponding path program 29 times [2024-06-14 11:25:26,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:26,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290153208] [2024-06-14 11:25:26,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:26,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:26,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:28,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:28,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:28,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290153208] [2024-06-14 11:25:28,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290153208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:28,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:28,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:25:28,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516306894] [2024-06-14 11:25:28,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:28,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:25:28,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:28,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:25:28,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:25:28,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:25:28,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 198 transitions, 1743 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:28,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:28,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:25:28,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:29,472 INFO L124 PetriNetUnfolderBase]: 649/1262 cut-off events. [2024-06-14 11:25:29,472 INFO L125 PetriNetUnfolderBase]: For 186975/186978 co-relation queries the response was YES. [2024-06-14 11:25:29,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7753 conditions, 1262 events. 649/1262 cut-off events. For 186975/186978 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 7040 event pairs, 141 based on Foata normal form. 2/1258 useless extension candidates. Maximal degree in co-relation 7605. Up to 894 conditions per place. [2024-06-14 11:25:29,485 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 153 selfloop transitions, 68 changer transitions 0/223 dead transitions. [2024-06-14 11:25:29,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 223 transitions, 2323 flow [2024-06-14 11:25:29,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:25:29,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:25:29,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-14 11:25:29,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3581267217630854 [2024-06-14 11:25:29,486 INFO L175 Difference]: Start difference. First operand has 315 places, 198 transitions, 1743 flow. Second operand 11 states and 130 transitions. [2024-06-14 11:25:29,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 223 transitions, 2323 flow [2024-06-14 11:25:30,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 223 transitions, 2183 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-14 11:25:30,065 INFO L231 Difference]: Finished difference. Result has 312 places, 199 transitions, 1821 flow [2024-06-14 11:25:30,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1603, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1821, PETRI_PLACES=312, PETRI_TRANSITIONS=199} [2024-06-14 11:25:30,065 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 280 predicate places. [2024-06-14 11:25:30,065 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 199 transitions, 1821 flow [2024-06-14 11:25:30,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:30,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:30,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:30,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-14 11:25:30,066 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:25:30,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:30,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1212758572, now seen corresponding path program 20 times [2024-06-14 11:25:30,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:30,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247895737] [2024-06-14 11:25:30,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:30,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:30,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:32,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:32,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:32,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247895737] [2024-06-14 11:25:32,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247895737] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:32,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:32,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:25:32,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882486620] [2024-06-14 11:25:32,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:32,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:25:32,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:32,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:25:32,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:25:32,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:25:32,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 199 transitions, 1821 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:32,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:32,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:25:32,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:32,913 INFO L124 PetriNetUnfolderBase]: 636/1237 cut-off events. [2024-06-14 11:25:32,913 INFO L125 PetriNetUnfolderBase]: For 169321/169321 co-relation queries the response was YES. [2024-06-14 11:25:32,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6426 conditions, 1237 events. 636/1237 cut-off events. For 169321/169321 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6941 event pairs, 174 based on Foata normal form. 10/1246 useless extension candidates. Maximal degree in co-relation 6279. Up to 1142 conditions per place. [2024-06-14 11:25:32,926 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 193 selfloop transitions, 15 changer transitions 9/219 dead transitions. [2024-06-14 11:25:32,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 219 transitions, 2339 flow [2024-06-14 11:25:32,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:25:32,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:25:32,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-14 11:25:32,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30303030303030304 [2024-06-14 11:25:32,927 INFO L175 Difference]: Start difference. First operand has 312 places, 199 transitions, 1821 flow. Second operand 12 states and 120 transitions. [2024-06-14 11:25:32,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 219 transitions, 2339 flow [2024-06-14 11:25:33,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 219 transitions, 2131 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-14 11:25:33,295 INFO L231 Difference]: Finished difference. Result has 315 places, 196 transitions, 1629 flow [2024-06-14 11:25:33,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1613, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1629, PETRI_PLACES=315, PETRI_TRANSITIONS=196} [2024-06-14 11:25:33,295 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 283 predicate places. [2024-06-14 11:25:33,295 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 196 transitions, 1629 flow [2024-06-14 11:25:33,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:33,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:33,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:33,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-14 11:25:33,296 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:25:33,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:33,296 INFO L85 PathProgramCache]: Analyzing trace with hash -2052801348, now seen corresponding path program 30 times [2024-06-14 11:25:33,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:33,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327252662] [2024-06-14 11:25:33,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:33,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:33,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:34,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:34,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:34,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327252662] [2024-06-14 11:25:34,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327252662] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:34,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:34,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:25:34,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601441989] [2024-06-14 11:25:34,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:34,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:25:34,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:34,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:25:34,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:25:35,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:25:35,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 196 transitions, 1629 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:35,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:35,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:25:35,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:35,688 INFO L124 PetriNetUnfolderBase]: 614/1197 cut-off events. [2024-06-14 11:25:35,689 INFO L125 PetriNetUnfolderBase]: For 112400/112403 co-relation queries the response was YES. [2024-06-14 11:25:35,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6113 conditions, 1197 events. 614/1197 cut-off events. For 112400/112403 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 6698 event pairs, 124 based on Foata normal form. 2/1193 useless extension candidates. Maximal degree in co-relation 5965. Up to 875 conditions per place. [2024-06-14 11:25:35,701 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 158 selfloop transitions, 60 changer transitions 0/220 dead transitions. [2024-06-14 11:25:35,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 220 transitions, 2201 flow [2024-06-14 11:25:35,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:25:35,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:25:35,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-14 11:25:35,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.349862258953168 [2024-06-14 11:25:35,702 INFO L175 Difference]: Start difference. First operand has 315 places, 196 transitions, 1629 flow. Second operand 11 states and 127 transitions. [2024-06-14 11:25:35,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 220 transitions, 2201 flow [2024-06-14 11:25:36,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 220 transitions, 2165 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-14 11:25:36,104 INFO L231 Difference]: Finished difference. Result has 312 places, 197 transitions, 1797 flow [2024-06-14 11:25:36,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1593, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1797, PETRI_PLACES=312, PETRI_TRANSITIONS=197} [2024-06-14 11:25:36,104 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 280 predicate places. [2024-06-14 11:25:36,104 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 197 transitions, 1797 flow [2024-06-14 11:25:36,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:36,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:36,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:36,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-14 11:25:36,105 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:25:36,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:36,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1963845692, now seen corresponding path program 21 times [2024-06-14 11:25:36,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:36,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426633896] [2024-06-14 11:25:36,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:36,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:36,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:37,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:37,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:37,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426633896] [2024-06-14 11:25:37,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426633896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:37,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:37,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:25:37,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688375584] [2024-06-14 11:25:37,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:37,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:25:37,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:37,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:25:37,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:25:37,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:25:37,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 197 transitions, 1797 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:37,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:37,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:25:37,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:38,176 INFO L124 PetriNetUnfolderBase]: 641/1258 cut-off events. [2024-06-14 11:25:38,177 INFO L125 PetriNetUnfolderBase]: For 197601/197604 co-relation queries the response was YES. [2024-06-14 11:25:38,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7182 conditions, 1258 events. 641/1258 cut-off events. For 197601/197604 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 7044 event pairs, 119 based on Foata normal form. 8/1260 useless extension candidates. Maximal degree in co-relation 7035. Up to 660 conditions per place. [2024-06-14 11:25:38,189 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 130 selfloop transitions, 84 changer transitions 12/228 dead transitions. [2024-06-14 11:25:38,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 228 transitions, 2605 flow [2024-06-14 11:25:38,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:25:38,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:25:38,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-14 11:25:38,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34595959595959597 [2024-06-14 11:25:38,190 INFO L175 Difference]: Start difference. First operand has 312 places, 197 transitions, 1797 flow. Second operand 12 states and 137 transitions. [2024-06-14 11:25:38,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 228 transitions, 2605 flow [2024-06-14 11:25:38,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 228 transitions, 2411 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-06-14 11:25:38,637 INFO L231 Difference]: Finished difference. Result has 315 places, 193 transitions, 1748 flow [2024-06-14 11:25:38,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1603, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1748, PETRI_PLACES=315, PETRI_TRANSITIONS=193} [2024-06-14 11:25:38,638 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 283 predicate places. [2024-06-14 11:25:38,638 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 193 transitions, 1748 flow [2024-06-14 11:25:38,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:38,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:38,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:38,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-14 11:25:38,638 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:25:38,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:38,639 INFO L85 PathProgramCache]: Analyzing trace with hash -2045441762, now seen corresponding path program 22 times [2024-06-14 11:25:38,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:38,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207464410] [2024-06-14 11:25:38,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:38,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:38,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:40,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:40,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:40,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207464410] [2024-06-14 11:25:40,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207464410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:40,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:40,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:25:40,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420329031] [2024-06-14 11:25:40,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:40,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:25:40,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:40,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:25:40,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:25:40,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:25:40,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 193 transitions, 1748 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:40,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:40,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:25:40,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:41,487 INFO L124 PetriNetUnfolderBase]: 630/1237 cut-off events. [2024-06-14 11:25:41,487 INFO L125 PetriNetUnfolderBase]: For 212980/212983 co-relation queries the response was YES. [2024-06-14 11:25:41,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7069 conditions, 1237 events. 630/1237 cut-off events. For 212980/212983 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 6898 event pairs, 127 based on Foata normal form. 10/1241 useless extension candidates. Maximal degree in co-relation 6921. Up to 849 conditions per place. [2024-06-14 11:25:41,502 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 148 selfloop transitions, 62 changer transitions 11/223 dead transitions. [2024-06-14 11:25:41,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 223 transitions, 2302 flow [2024-06-14 11:25:41,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:25:41,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:25:41,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-14 11:25:41,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3560606060606061 [2024-06-14 11:25:41,503 INFO L175 Difference]: Start difference. First operand has 315 places, 193 transitions, 1748 flow. Second operand 12 states and 141 transitions. [2024-06-14 11:25:41,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 223 transitions, 2302 flow [2024-06-14 11:25:41,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 223 transitions, 2099 flow, removed 10 selfloop flow, removed 13 redundant places. [2024-06-14 11:25:41,978 INFO L231 Difference]: Finished difference. Result has 309 places, 190 transitions, 1658 flow [2024-06-14 11:25:41,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1551, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1658, PETRI_PLACES=309, PETRI_TRANSITIONS=190} [2024-06-14 11:25:41,978 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 277 predicate places. [2024-06-14 11:25:41,978 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 190 transitions, 1658 flow [2024-06-14 11:25:41,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:41,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:41,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:41,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-14 11:25:41,979 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:25:41,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:41,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1467514278, now seen corresponding path program 23 times [2024-06-14 11:25:41,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:41,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062721226] [2024-06-14 11:25:41,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:41,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:41,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:43,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:43,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:43,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062721226] [2024-06-14 11:25:43,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062721226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:43,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:43,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:25:43,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533517723] [2024-06-14 11:25:43,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:43,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:25:43,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:43,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:25:43,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:25:44,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:25:44,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 190 transitions, 1658 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:44,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:44,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:25:44,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:44,725 INFO L124 PetriNetUnfolderBase]: 620/1223 cut-off events. [2024-06-14 11:25:44,725 INFO L125 PetriNetUnfolderBase]: For 202966/202969 co-relation queries the response was YES. [2024-06-14 11:25:44,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6813 conditions, 1223 events. 620/1223 cut-off events. For 202966/202969 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 6825 event pairs, 127 based on Foata normal form. 10/1227 useless extension candidates. Maximal degree in co-relation 6669. Up to 857 conditions per place. [2024-06-14 11:25:44,738 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 148 selfloop transitions, 58 changer transitions 11/219 dead transitions. [2024-06-14 11:25:44,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 219 transitions, 2194 flow [2024-06-14 11:25:44,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:25:44,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:25:44,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-14 11:25:44,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.351010101010101 [2024-06-14 11:25:44,739 INFO L175 Difference]: Start difference. First operand has 309 places, 190 transitions, 1658 flow. Second operand 12 states and 139 transitions. [2024-06-14 11:25:44,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 219 transitions, 2194 flow [2024-06-14 11:25:45,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 219 transitions, 2066 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 11:25:45,217 INFO L231 Difference]: Finished difference. Result has 307 places, 187 transitions, 1629 flow [2024-06-14 11:25:45,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1530, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1629, PETRI_PLACES=307, PETRI_TRANSITIONS=187} [2024-06-14 11:25:45,217 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 275 predicate places. [2024-06-14 11:25:45,217 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 187 transitions, 1629 flow [2024-06-14 11:25:45,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:45,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:45,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:45,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-14 11:25:45,218 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:25:45,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:45,219 INFO L85 PathProgramCache]: Analyzing trace with hash -2052806928, now seen corresponding path program 31 times [2024-06-14 11:25:45,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:45,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953817494] [2024-06-14 11:25:45,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:45,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:45,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:46,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:46,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:46,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953817494] [2024-06-14 11:25:46,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953817494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:46,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:46,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:25:46,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824319392] [2024-06-14 11:25:46,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:46,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:25:46,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:46,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:25:46,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:25:47,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:25:47,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 187 transitions, 1629 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:47,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:47,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:25:47,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:47,620 INFO L124 PetriNetUnfolderBase]: 598/1181 cut-off events. [2024-06-14 11:25:47,620 INFO L125 PetriNetUnfolderBase]: For 147252/147255 co-relation queries the response was YES. [2024-06-14 11:25:47,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6760 conditions, 1181 events. 598/1181 cut-off events. For 147252/147255 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 6570 event pairs, 121 based on Foata normal form. 2/1177 useless extension candidates. Maximal degree in co-relation 6617. Up to 859 conditions per place. [2024-06-14 11:25:47,632 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 150 selfloop transitions, 59 changer transitions 0/211 dead transitions. [2024-06-14 11:25:47,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 211 transitions, 2185 flow [2024-06-14 11:25:47,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:25:47,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:25:47,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-14 11:25:47,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34710743801652894 [2024-06-14 11:25:47,632 INFO L175 Difference]: Start difference. First operand has 307 places, 187 transitions, 1629 flow. Second operand 11 states and 126 transitions. [2024-06-14 11:25:47,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 211 transitions, 2185 flow [2024-06-14 11:25:48,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 211 transitions, 2065 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 11:25:48,057 INFO L231 Difference]: Finished difference. Result has 304 places, 188 transitions, 1713 flow [2024-06-14 11:25:48,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1509, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1713, PETRI_PLACES=304, PETRI_TRANSITIONS=188} [2024-06-14 11:25:48,058 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 272 predicate places. [2024-06-14 11:25:48,058 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 188 transitions, 1713 flow [2024-06-14 11:25:48,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:48,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:48,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:48,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-14 11:25:48,058 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:25:48,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:48,058 INFO L85 PathProgramCache]: Analyzing trace with hash 2042864158, now seen corresponding path program 32 times [2024-06-14 11:25:48,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:48,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125310489] [2024-06-14 11:25:48,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:48,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:48,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:49,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:49,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:49,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125310489] [2024-06-14 11:25:49,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125310489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:49,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:49,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:25:49,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906292479] [2024-06-14 11:25:49,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:49,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:25:49,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:49,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:25:49,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:25:49,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:25:49,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 188 transitions, 1713 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:49,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:49,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:25:49,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:50,503 INFO L124 PetriNetUnfolderBase]: 602/1189 cut-off events. [2024-06-14 11:25:50,503 INFO L125 PetriNetUnfolderBase]: For 148182/148185 co-relation queries the response was YES. [2024-06-14 11:25:50,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6933 conditions, 1189 events. 602/1189 cut-off events. For 148182/148185 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 6614 event pairs, 127 based on Foata normal form. 2/1185 useless extension candidates. Maximal degree in co-relation 6791. Up to 867 conditions per place. [2024-06-14 11:25:50,512 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 147 selfloop transitions, 61 changer transitions 0/210 dead transitions. [2024-06-14 11:25:50,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 210 transitions, 2263 flow [2024-06-14 11:25:50,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:25:50,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:25:50,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-14 11:25:50,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3415977961432507 [2024-06-14 11:25:50,513 INFO L175 Difference]: Start difference. First operand has 304 places, 188 transitions, 1713 flow. Second operand 11 states and 124 transitions. [2024-06-14 11:25:50,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 210 transitions, 2263 flow [2024-06-14 11:25:50,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 210 transitions, 2069 flow, removed 39 selfloop flow, removed 9 redundant places. [2024-06-14 11:25:50,982 INFO L231 Difference]: Finished difference. Result has 306 places, 189 transitions, 1729 flow [2024-06-14 11:25:50,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1519, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1729, PETRI_PLACES=306, PETRI_TRANSITIONS=189} [2024-06-14 11:25:50,983 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 274 predicate places. [2024-06-14 11:25:50,983 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 189 transitions, 1729 flow [2024-06-14 11:25:50,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:50,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:50,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:50,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-14 11:25:50,983 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:25:50,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:50,983 INFO L85 PathProgramCache]: Analyzing trace with hash 2042858578, now seen corresponding path program 33 times [2024-06-14 11:25:50,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:50,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010078548] [2024-06-14 11:25:50,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:50,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:51,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:52,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:52,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:52,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010078548] [2024-06-14 11:25:52,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010078548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:52,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:52,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:25:52,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563414578] [2024-06-14 11:25:52,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:52,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:25:52,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:52,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:25:52,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:25:52,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:25:52,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 189 transitions, 1729 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:52,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:52,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:25:52,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:53,285 INFO L124 PetriNetUnfolderBase]: 606/1197 cut-off events. [2024-06-14 11:25:53,285 INFO L125 PetriNetUnfolderBase]: For 150997/151000 co-relation queries the response was YES. [2024-06-14 11:25:53,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6992 conditions, 1197 events. 606/1197 cut-off events. For 150997/151000 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 6704 event pairs, 137 based on Foata normal form. 2/1193 useless extension candidates. Maximal degree in co-relation 6849. Up to 735 conditions per place. [2024-06-14 11:25:53,296 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 140 selfloop transitions, 68 changer transitions 0/210 dead transitions. [2024-06-14 11:25:53,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 210 transitions, 2277 flow [2024-06-14 11:25:53,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:25:53,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:25:53,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-14 11:25:53,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33608815426997246 [2024-06-14 11:25:53,297 INFO L175 Difference]: Start difference. First operand has 306 places, 189 transitions, 1729 flow. Second operand 11 states and 122 transitions. [2024-06-14 11:25:53,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 210 transitions, 2277 flow [2024-06-14 11:25:53,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 210 transitions, 2077 flow, removed 40 selfloop flow, removed 9 redundant places. [2024-06-14 11:25:53,717 INFO L231 Difference]: Finished difference. Result has 308 places, 190 transitions, 1755 flow [2024-06-14 11:25:53,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1529, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1755, PETRI_PLACES=308, PETRI_TRANSITIONS=190} [2024-06-14 11:25:53,717 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 276 predicate places. [2024-06-14 11:25:53,717 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 190 transitions, 1755 flow [2024-06-14 11:25:53,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:53,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:53,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:53,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-14 11:25:53,718 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:25:53,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:53,718 INFO L85 PathProgramCache]: Analyzing trace with hash 2048436284, now seen corresponding path program 24 times [2024-06-14 11:25:53,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:53,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189225181] [2024-06-14 11:25:53,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:53,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:53,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:55,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:55,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:55,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189225181] [2024-06-14 11:25:55,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189225181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:55,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:55,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:25:55,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313661622] [2024-06-14 11:25:55,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:55,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:25:55,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:55,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:25:55,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:25:55,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:25:55,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 190 transitions, 1755 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:55,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:55,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:25:55,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:56,252 INFO L124 PetriNetUnfolderBase]: 593/1174 cut-off events. [2024-06-14 11:25:56,252 INFO L125 PetriNetUnfolderBase]: For 135938/135941 co-relation queries the response was YES. [2024-06-14 11:25:56,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5589 conditions, 1174 events. 593/1174 cut-off events. For 135938/135941 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 6565 event pairs, 120 based on Foata normal form. 10/1178 useless extension candidates. Maximal degree in co-relation 5445. Up to 808 conditions per place. [2024-06-14 11:25:56,265 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 144 selfloop transitions, 59 changer transitions 11/216 dead transitions. [2024-06-14 11:25:56,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 216 transitions, 2249 flow [2024-06-14 11:25:56,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:25:56,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:25:56,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-14 11:25:56,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3434343434343434 [2024-06-14 11:25:56,265 INFO L175 Difference]: Start difference. First operand has 308 places, 190 transitions, 1755 flow. Second operand 12 states and 136 transitions. [2024-06-14 11:25:56,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 216 transitions, 2249 flow [2024-06-14 11:25:56,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 216 transitions, 2031 flow, removed 42 selfloop flow, removed 9 redundant places. [2024-06-14 11:25:56,541 INFO L231 Difference]: Finished difference. Result has 311 places, 186 transitions, 1610 flow [2024-06-14 11:25:56,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1537, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1610, PETRI_PLACES=311, PETRI_TRANSITIONS=186} [2024-06-14 11:25:56,541 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 279 predicate places. [2024-06-14 11:25:56,541 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 186 transitions, 1610 flow [2024-06-14 11:25:56,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:56,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:56,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:56,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-14 11:25:56,542 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:25:56,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:56,542 INFO L85 PathProgramCache]: Analyzing trace with hash 2042714428, now seen corresponding path program 34 times [2024-06-14 11:25:56,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:56,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203180607] [2024-06-14 11:25:56,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:56,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:56,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:58,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:58,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:58,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203180607] [2024-06-14 11:25:58,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203180607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:58,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:58,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:25:58,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977669867] [2024-06-14 11:25:58,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:58,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:25:58,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:58,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:25:58,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:25:58,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:25:58,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 186 transitions, 1610 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:58,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:58,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:25:58,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:59,195 INFO L124 PetriNetUnfolderBase]: 564/1119 cut-off events. [2024-06-14 11:25:59,196 INFO L125 PetriNetUnfolderBase]: For 62772/62775 co-relation queries the response was YES. [2024-06-14 11:25:59,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4896 conditions, 1119 events. 564/1119 cut-off events. For 62772/62775 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 6281 event pairs, 107 based on Foata normal form. 2/1115 useless extension candidates. Maximal degree in co-relation 4751. Up to 771 conditions per place. [2024-06-14 11:25:59,207 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 142 selfloop transitions, 63 changer transitions 0/207 dead transitions. [2024-06-14 11:25:59,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 207 transitions, 2072 flow [2024-06-14 11:25:59,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:25:59,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:25:59,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-14 11:25:59,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33884297520661155 [2024-06-14 11:25:59,207 INFO L175 Difference]: Start difference. First operand has 311 places, 186 transitions, 1610 flow. Second operand 11 states and 123 transitions. [2024-06-14 11:25:59,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 207 transitions, 2072 flow [2024-06-14 11:25:59,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 207 transitions, 1907 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-14 11:25:59,478 INFO L231 Difference]: Finished difference. Result has 305 places, 186 transitions, 1575 flow [2024-06-14 11:25:59,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1445, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1575, PETRI_PLACES=305, PETRI_TRANSITIONS=186} [2024-06-14 11:25:59,479 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 273 predicate places. [2024-06-14 11:25:59,479 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 186 transitions, 1575 flow [2024-06-14 11:25:59,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:59,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:59,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:59,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-14 11:25:59,479 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:25:59,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:59,480 INFO L85 PathProgramCache]: Analyzing trace with hash 2062997922, now seen corresponding path program 1 times [2024-06-14 11:25:59,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:59,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653329413] [2024-06-14 11:25:59,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:59,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:59,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:26:01,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:26:01,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:26:01,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653329413] [2024-06-14 11:26:01,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653329413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:26:01,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:26:01,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-14 11:26:01,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4945367] [2024-06-14 11:26:01,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:26:01,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-14 11:26:01,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:26:01,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-14 11:26:01,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-14 11:26:01,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:26:01,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 186 transitions, 1575 flow. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:01,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:26:01,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:26:01,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:26:01,913 INFO L124 PetriNetUnfolderBase]: 572/1138 cut-off events. [2024-06-14 11:26:01,913 INFO L125 PetriNetUnfolderBase]: For 90573/90573 co-relation queries the response was YES. [2024-06-14 11:26:01,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4860 conditions, 1138 events. 572/1138 cut-off events. For 90573/90573 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 6391 event pairs, 127 based on Foata normal form. 6/1143 useless extension candidates. Maximal degree in co-relation 4718. Up to 958 conditions per place. [2024-06-14 11:26:01,924 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 169 selfloop transitions, 13 changer transitions 28/212 dead transitions. [2024-06-14 11:26:01,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 212 transitions, 2061 flow [2024-06-14 11:26:01,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:26:01,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:26:01,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-14 11:26:01,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3055555555555556 [2024-06-14 11:26:01,924 INFO L175 Difference]: Start difference. First operand has 305 places, 186 transitions, 1575 flow. Second operand 12 states and 121 transitions. [2024-06-14 11:26:01,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 212 transitions, 2061 flow [2024-06-14 11:26:02,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 212 transitions, 1643 flow, removed 42 selfloop flow, removed 17 redundant places. [2024-06-14 11:26:02,228 INFO L231 Difference]: Finished difference. Result has 300 places, 175 transitions, 1111 flow [2024-06-14 11:26:02,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1157, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1111, PETRI_PLACES=300, PETRI_TRANSITIONS=175} [2024-06-14 11:26:02,228 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 268 predicate places. [2024-06-14 11:26:02,228 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 175 transitions, 1111 flow [2024-06-14 11:26:02,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:02,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:26:02,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:26:02,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-14 11:26:02,229 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:26:02,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:26:02,229 INFO L85 PathProgramCache]: Analyzing trace with hash -469821500, now seen corresponding path program 2 times [2024-06-14 11:26:02,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:26:02,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134087043] [2024-06-14 11:26:02,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:26:02,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:26:02,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:26:04,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:26:04,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:26:04,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134087043] [2024-06-14 11:26:04,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134087043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:26:04,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:26:04,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-14 11:26:04,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18012023] [2024-06-14 11:26:04,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:26:04,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-14 11:26:04,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:26:04,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-14 11:26:04,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-14 11:26:04,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:26:04,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 175 transitions, 1111 flow. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:04,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:26:04,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:26:04,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:26:04,925 INFO L124 PetriNetUnfolderBase]: 525/1051 cut-off events. [2024-06-14 11:26:04,925 INFO L125 PetriNetUnfolderBase]: For 88226/88226 co-relation queries the response was YES. [2024-06-14 11:26:04,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3795 conditions, 1051 events. 525/1051 cut-off events. For 88226/88226 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5821 event pairs, 125 based on Foata normal form. 6/1056 useless extension candidates. Maximal degree in co-relation 3659. Up to 908 conditions per place. [2024-06-14 11:26:04,934 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 166 selfloop transitions, 16 changer transitions 14/198 dead transitions. [2024-06-14 11:26:04,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 198 transitions, 1559 flow [2024-06-14 11:26:04,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:26:04,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:26:04,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 119 transitions. [2024-06-14 11:26:04,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3005050505050505 [2024-06-14 11:26:04,935 INFO L175 Difference]: Start difference. First operand has 300 places, 175 transitions, 1111 flow. Second operand 12 states and 119 transitions. [2024-06-14 11:26:04,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 198 transitions, 1559 flow [2024-06-14 11:26:05,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 198 transitions, 1521 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-14 11:26:05,110 INFO L231 Difference]: Finished difference. Result has 287 places, 171 transitions, 1090 flow [2024-06-14 11:26:05,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1073, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1090, PETRI_PLACES=287, PETRI_TRANSITIONS=171} [2024-06-14 11:26:05,111 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 255 predicate places. [2024-06-14 11:26:05,111 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 171 transitions, 1090 flow [2024-06-14 11:26:05,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:05,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:26:05,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:26:05,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-14 11:26:05,111 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:26:05,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:26:05,111 INFO L85 PathProgramCache]: Analyzing trace with hash 670624010, now seen corresponding path program 3 times [2024-06-14 11:26:05,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:26:05,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685919641] [2024-06-14 11:26:05,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:26:05,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:26:05,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:26:06,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:26:06,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:26:06,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685919641] [2024-06-14 11:26:06,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685919641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:26:06,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:26:06,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:26:06,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815929261] [2024-06-14 11:26:06,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:26:06,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:26:06,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:26:06,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:26:06,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:26:07,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:26:07,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 171 transitions, 1090 flow. Second operand has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:07,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:26:07,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:26:07,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:26:07,434 INFO L124 PetriNetUnfolderBase]: 511/1025 cut-off events. [2024-06-14 11:26:07,434 INFO L125 PetriNetUnfolderBase]: For 81122/81122 co-relation queries the response was YES. [2024-06-14 11:26:07,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3700 conditions, 1025 events. 511/1025 cut-off events. For 81122/81122 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5629 event pairs, 121 based on Foata normal form. 6/1030 useless extension candidates. Maximal degree in co-relation 3569. Up to 882 conditions per place. [2024-06-14 11:26:07,443 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 161 selfloop transitions, 14 changer transitions 15/192 dead transitions. [2024-06-14 11:26:07,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 192 transitions, 1522 flow [2024-06-14 11:26:07,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:26:07,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:26:07,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-14 11:26:07,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30578512396694213 [2024-06-14 11:26:07,444 INFO L175 Difference]: Start difference. First operand has 287 places, 171 transitions, 1090 flow. Second operand 11 states and 111 transitions. [2024-06-14 11:26:07,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 192 transitions, 1522 flow [2024-06-14 11:26:07,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 192 transitions, 1482 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 11:26:07,570 INFO L231 Difference]: Finished difference. Result has 280 places, 166 transitions, 1059 flow [2024-06-14 11:26:07,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1050, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1059, PETRI_PLACES=280, PETRI_TRANSITIONS=166} [2024-06-14 11:26:07,571 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 248 predicate places. [2024-06-14 11:26:07,571 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 166 transitions, 1059 flow [2024-06-14 11:26:07,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:07,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:26:07,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:26:07,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-14 11:26:07,571 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:26:07,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:26:07,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1140015328, now seen corresponding path program 4 times [2024-06-14 11:26:07,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:26:07,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560050837] [2024-06-14 11:26:07,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:26:07,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:26:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:26:09,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:26:09,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:26:09,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560050837] [2024-06-14 11:26:09,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560050837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:26:09,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:26:09,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-14 11:26:09,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183259888] [2024-06-14 11:26:09,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:26:09,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-14 11:26:09,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:26:09,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-14 11:26:09,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-14 11:26:09,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:26:09,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 166 transitions, 1059 flow. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:09,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:26:09,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:26:09,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:26:10,205 INFO L124 PetriNetUnfolderBase]: 493/991 cut-off events. [2024-06-14 11:26:10,205 INFO L125 PetriNetUnfolderBase]: For 77004/77004 co-relation queries the response was YES. [2024-06-14 11:26:10,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3585 conditions, 991 events. 493/991 cut-off events. For 77004/77004 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5373 event pairs, 115 based on Foata normal form. 6/996 useless extension candidates. Maximal degree in co-relation 3457. Up to 848 conditions per place. [2024-06-14 11:26:10,213 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 150 selfloop transitions, 8 changer transitions 29/189 dead transitions. [2024-06-14 11:26:10,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 189 transitions, 1489 flow [2024-06-14 11:26:10,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:26:10,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:26:10,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 117 transitions. [2024-06-14 11:26:10,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29545454545454547 [2024-06-14 11:26:10,214 INFO L175 Difference]: Start difference. First operand has 280 places, 166 transitions, 1059 flow. Second operand 12 states and 117 transitions. [2024-06-14 11:26:10,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 189 transitions, 1489 flow [2024-06-14 11:26:10,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 189 transitions, 1451 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-14 11:26:10,382 INFO L231 Difference]: Finished difference. Result has 273 places, 156 transitions, 979 flow [2024-06-14 11:26:10,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1021, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=979, PETRI_PLACES=273, PETRI_TRANSITIONS=156} [2024-06-14 11:26:10,382 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 241 predicate places. [2024-06-14 11:26:10,382 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 156 transitions, 979 flow [2024-06-14 11:26:10,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:10,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:26:10,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:26:10,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-14 11:26:10,383 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:26:10,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:26:10,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1378099064, now seen corresponding path program 5 times [2024-06-14 11:26:10,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:26:10,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817597544] [2024-06-14 11:26:10,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:26:10,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:26:10,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:26:12,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:26:12,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:26:12,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817597544] [2024-06-14 11:26:12,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817597544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:26:12,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:26:12,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-14 11:26:12,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256445611] [2024-06-14 11:26:12,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:26:12,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-14 11:26:12,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:26:12,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-14 11:26:12,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-14 11:26:12,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:26:12,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 156 transitions, 979 flow. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:12,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:26:12,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:26:12,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:26:13,388 INFO L124 PetriNetUnfolderBase]: 450/904 cut-off events. [2024-06-14 11:26:13,388 INFO L125 PetriNetUnfolderBase]: For 71516/71516 co-relation queries the response was YES. [2024-06-14 11:26:13,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3280 conditions, 904 events. 450/904 cut-off events. For 71516/71516 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4841 event pairs, 100 based on Foata normal form. 6/909 useless extension candidates. Maximal degree in co-relation 3156. Up to 747 conditions per place. [2024-06-14 11:26:13,396 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 136 selfloop transitions, 24 changer transitions 14/176 dead transitions. [2024-06-14 11:26:13,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 176 transitions, 1373 flow [2024-06-14 11:26:13,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:26:13,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:26:13,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-14 11:26:13,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30303030303030304 [2024-06-14 11:26:13,397 INFO L175 Difference]: Start difference. First operand has 273 places, 156 transitions, 979 flow. Second operand 12 states and 120 transitions. [2024-06-14 11:26:13,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 176 transitions, 1373 flow [2024-06-14 11:26:13,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 176 transitions, 1335 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-14 11:26:13,515 INFO L231 Difference]: Finished difference. Result has 258 places, 152 transitions, 974 flow [2024-06-14 11:26:13,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=941, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=974, PETRI_PLACES=258, PETRI_TRANSITIONS=152} [2024-06-14 11:26:13,516 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 226 predicate places. [2024-06-14 11:26:13,516 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 152 transitions, 974 flow [2024-06-14 11:26:13,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:13,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:26:13,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:26:13,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-14 11:26:13,516 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:26:13,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:26:13,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1374225060, now seen corresponding path program 6 times [2024-06-14 11:26:13,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:26:13,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406751859] [2024-06-14 11:26:13,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:26:13,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:26:13,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:26:15,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:26:15,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:26:15,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406751859] [2024-06-14 11:26:15,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406751859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:26:15,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:26:15,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-14 11:26:15,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961690182] [2024-06-14 11:26:15,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:26:15,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-14 11:26:15,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:26:15,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-14 11:26:15,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-14 11:26:15,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:26:15,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 152 transitions, 974 flow. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:15,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:26:15,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:26:15,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:26:16,208 INFO L124 PetriNetUnfolderBase]: 436/878 cut-off events. [2024-06-14 11:26:16,208 INFO L125 PetriNetUnfolderBase]: For 63925/63925 co-relation queries the response was YES. [2024-06-14 11:26:16,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3200 conditions, 878 events. 436/878 cut-off events. For 63925/63925 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4674 event pairs, 96 based on Foata normal form. 6/883 useless extension candidates. Maximal degree in co-relation 3083. Up to 721 conditions per place. [2024-06-14 11:26:16,215 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 131 selfloop transitions, 22 changer transitions 17/172 dead transitions. [2024-06-14 11:26:16,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 172 transitions, 1360 flow [2024-06-14 11:26:16,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:26:16,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:26:16,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 119 transitions. [2024-06-14 11:26:16,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3005050505050505 [2024-06-14 11:26:16,216 INFO L175 Difference]: Start difference. First operand has 258 places, 152 transitions, 974 flow. Second operand 12 states and 119 transitions. [2024-06-14 11:26:16,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 172 transitions, 1360 flow [2024-06-14 11:26:16,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 172 transitions, 1304 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 11:26:16,336 INFO L231 Difference]: Finished difference. Result has 252 places, 147 transitions, 943 flow [2024-06-14 11:26:16,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=918, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=943, PETRI_PLACES=252, PETRI_TRANSITIONS=147} [2024-06-14 11:26:16,336 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 220 predicate places. [2024-06-14 11:26:16,336 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 147 transitions, 943 flow [2024-06-14 11:26:16,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:16,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:26:16,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:26:16,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-14 11:26:16,337 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:26:16,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:26:16,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1942371422, now seen corresponding path program 7 times [2024-06-14 11:26:16,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:26:16,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263780885] [2024-06-14 11:26:16,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:26:16,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:26:16,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:26:18,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:26:18,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:26:18,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263780885] [2024-06-14 11:26:18,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263780885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:26:18,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:26:18,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-14 11:26:18,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268750304] [2024-06-14 11:26:18,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:26:18,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-14 11:26:18,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:26:18,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-14 11:26:18,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-06-14 11:26:18,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:26:18,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 147 transitions, 943 flow. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:18,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:26:18,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:26:18,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:26:18,896 INFO L124 PetriNetUnfolderBase]: 418/844 cut-off events. [2024-06-14 11:26:18,897 INFO L125 PetriNetUnfolderBase]: For 60265/60265 co-relation queries the response was YES. [2024-06-14 11:26:18,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3085 conditions, 844 events. 418/844 cut-off events. For 60265/60265 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4442 event pairs, 75 based on Foata normal form. 6/849 useless extension candidates. Maximal degree in co-relation 2971. Up to 661 conditions per place. [2024-06-14 11:26:18,902 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 126 selfloop transitions, 22 changer transitions 17/167 dead transitions. [2024-06-14 11:26:18,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 167 transitions, 1319 flow [2024-06-14 11:26:18,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:26:18,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:26:18,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-14 11:26:18,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30303030303030304 [2024-06-14 11:26:18,903 INFO L175 Difference]: Start difference. First operand has 252 places, 147 transitions, 943 flow. Second operand 12 states and 120 transitions. [2024-06-14 11:26:18,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 167 transitions, 1319 flow [2024-06-14 11:26:18,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 167 transitions, 1265 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-14 11:26:18,998 INFO L231 Difference]: Finished difference. Result has 244 places, 140 transitions, 898 flow [2024-06-14 11:26:18,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=889, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=898, PETRI_PLACES=244, PETRI_TRANSITIONS=140} [2024-06-14 11:26:18,999 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 212 predicate places. [2024-06-14 11:26:18,999 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 140 transitions, 898 flow [2024-06-14 11:26:18,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:18,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:26:18,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:26:18,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-14 11:26:18,999 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:26:18,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:26:18,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1677080394, now seen corresponding path program 8 times [2024-06-14 11:26:18,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:26:18,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850244922] [2024-06-14 11:26:19,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:26:19,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:26:19,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:26:21,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:26:21,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:26:21,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850244922] [2024-06-14 11:26:21,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850244922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:26:21,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:26:21,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-14 11:26:21,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831943032] [2024-06-14 11:26:21,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:26:21,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-14 11:26:21,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:26:21,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-14 11:26:21,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-06-14 11:26:22,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:26:22,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 140 transitions, 898 flow. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:22,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:26:22,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:26:22,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:26:22,617 INFO L124 PetriNetUnfolderBase]: 396/802 cut-off events. [2024-06-14 11:26:22,618 INFO L125 PetriNetUnfolderBase]: For 55555/55555 co-relation queries the response was YES. [2024-06-14 11:26:22,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2947 conditions, 802 events. 396/802 cut-off events. For 55555/55555 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4150 event pairs, 84 based on Foata normal form. 6/807 useless extension candidates. Maximal degree in co-relation 2837. Up to 669 conditions per place. [2024-06-14 11:26:22,622 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 128 selfloop transitions, 21 changer transitions 11/162 dead transitions. [2024-06-14 11:26:22,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 162 transitions, 1272 flow [2024-06-14 11:26:22,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:26:22,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:26:22,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-14 11:26:22,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30303030303030304 [2024-06-14 11:26:22,623 INFO L175 Difference]: Start difference. First operand has 244 places, 140 transitions, 898 flow. Second operand 12 states and 120 transitions. [2024-06-14 11:26:22,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 162 transitions, 1272 flow [2024-06-14 11:26:22,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 162 transitions, 1216 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-14 11:26:22,724 INFO L231 Difference]: Finished difference. Result has 234 places, 137 transitions, 873 flow [2024-06-14 11:26:22,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=873, PETRI_PLACES=234, PETRI_TRANSITIONS=137} [2024-06-14 11:26:22,725 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 202 predicate places. [2024-06-14 11:26:22,725 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 137 transitions, 873 flow [2024-06-14 11:26:22,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:22,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:26:22,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:26:22,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-14 11:26:22,725 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:26:22,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:26:22,725 INFO L85 PathProgramCache]: Analyzing trace with hash 264753086, now seen corresponding path program 9 times [2024-06-14 11:26:22,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:26:22,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366298005] [2024-06-14 11:26:22,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:26:22,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:26:22,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:26:25,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:26:25,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:26:25,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366298005] [2024-06-14 11:26:25,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366298005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:26:25,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:26:25,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-14 11:26:25,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993101152] [2024-06-14 11:26:25,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:26:25,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-14 11:26:25,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:26:25,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-14 11:26:25,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-06-14 11:26:25,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:26:25,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 137 transitions, 873 flow. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:25,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:26:25,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:26:25,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:26:26,048 INFO L124 PetriNetUnfolderBase]: 386/784 cut-off events. [2024-06-14 11:26:26,049 INFO L125 PetriNetUnfolderBase]: For 49909/49909 co-relation queries the response was YES. [2024-06-14 11:26:26,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2860 conditions, 784 events. 386/784 cut-off events. For 49909/49909 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4025 event pairs, 84 based on Foata normal form. 6/789 useless extension candidates. Maximal degree in co-relation 2755. Up to 632 conditions per place. [2024-06-14 11:26:26,054 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 125 selfloop transitions, 18 changer transitions 15/160 dead transitions. [2024-06-14 11:26:26,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 160 transitions, 1247 flow [2024-06-14 11:26:26,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:26:26,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:26:26,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-14 11:26:26,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3055555555555556 [2024-06-14 11:26:26,055 INFO L175 Difference]: Start difference. First operand has 234 places, 137 transitions, 873 flow. Second operand 12 states and 121 transitions. [2024-06-14 11:26:26,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 160 transitions, 1247 flow [2024-06-14 11:26:26,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 160 transitions, 1199 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 11:26:26,146 INFO L231 Difference]: Finished difference. Result has 230 places, 131 transitions, 824 flow [2024-06-14 11:26:26,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=825, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=824, PETRI_PLACES=230, PETRI_TRANSITIONS=131} [2024-06-14 11:26:26,146 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 198 predicate places. [2024-06-14 11:26:26,146 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 131 transitions, 824 flow [2024-06-14 11:26:26,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:26,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:26:26,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:26:26,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-14 11:26:26,146 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:26:26,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:26:26,147 INFO L85 PathProgramCache]: Analyzing trace with hash -402883968, now seen corresponding path program 10 times [2024-06-14 11:26:26,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:26:26,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325758726] [2024-06-14 11:26:26,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:26:26,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:26:26,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:26:28,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:26:28,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:26:28,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325758726] [2024-06-14 11:26:28,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325758726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:26:28,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:26:28,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-14 11:26:28,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545584058] [2024-06-14 11:26:28,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:26:28,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-14 11:26:28,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:26:28,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-14 11:26:28,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-06-14 11:26:28,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:26:28,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 131 transitions, 824 flow. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:28,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:26:28,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:26:28,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:26:28,765 INFO L124 PetriNetUnfolderBase]: 371/755 cut-off events. [2024-06-14 11:26:28,765 INFO L125 PetriNetUnfolderBase]: For 47735/47735 co-relation queries the response was YES. [2024-06-14 11:26:28,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2742 conditions, 755 events. 371/755 cut-off events. For 47735/47735 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3849 event pairs, 84 based on Foata normal form. 6/760 useless extension candidates. Maximal degree in co-relation 2639. Up to 622 conditions per place. [2024-06-14 11:26:28,770 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 120 selfloop transitions, 18 changer transitions 11/151 dead transitions. [2024-06-14 11:26:28,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 151 transitions, 1170 flow [2024-06-14 11:26:28,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:26:28,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:26:28,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 116 transitions. [2024-06-14 11:26:28,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29292929292929293 [2024-06-14 11:26:28,771 INFO L175 Difference]: Start difference. First operand has 230 places, 131 transitions, 824 flow. Second operand 12 states and 116 transitions. [2024-06-14 11:26:28,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 151 transitions, 1170 flow [2024-06-14 11:26:28,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 151 transitions, 1126 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 11:26:28,854 INFO L231 Difference]: Finished difference. Result has 223 places, 128 transitions, 805 flow [2024-06-14 11:26:28,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=805, PETRI_PLACES=223, PETRI_TRANSITIONS=128} [2024-06-14 11:26:28,855 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 191 predicate places. [2024-06-14 11:26:28,855 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 128 transitions, 805 flow [2024-06-14 11:26:28,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:28,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:26:28,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:26:28,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-14 11:26:28,855 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:26:28,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:26:28,855 INFO L85 PathProgramCache]: Analyzing trace with hash -196607410, now seen corresponding path program 11 times [2024-06-14 11:26:28,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:26:28,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414409757] [2024-06-14 11:26:28,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:26:28,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:26:28,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:26:31,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:26:31,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:26:31,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414409757] [2024-06-14 11:26:31,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414409757] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:26:31,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:26:31,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-14 11:26:31,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592450235] [2024-06-14 11:26:31,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:26:31,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-14 11:26:31,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:26:31,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-14 11:26:31,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-06-14 11:26:31,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:26:31,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 128 transitions, 805 flow. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:31,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:26:31,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:26:31,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:26:31,715 INFO L124 PetriNetUnfolderBase]: 361/737 cut-off events. [2024-06-14 11:26:31,715 INFO L125 PetriNetUnfolderBase]: For 44597/44597 co-relation queries the response was YES. [2024-06-14 11:26:31,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2669 conditions, 737 events. 361/737 cut-off events. For 44597/44597 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3731 event pairs, 82 based on Foata normal form. 6/742 useless extension candidates. Maximal degree in co-relation 2569. Up to 604 conditions per place. [2024-06-14 11:26:31,720 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 117 selfloop transitions, 13 changer transitions 18/150 dead transitions. [2024-06-14 11:26:31,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 150 transitions, 1155 flow [2024-06-14 11:26:31,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:26:31,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:26:31,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-14 11:26:31,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29797979797979796 [2024-06-14 11:26:31,721 INFO L175 Difference]: Start difference. First operand has 223 places, 128 transitions, 805 flow. Second operand 12 states and 118 transitions. [2024-06-14 11:26:31,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 150 transitions, 1155 flow [2024-06-14 11:26:31,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 150 transitions, 1113 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 11:26:31,781 INFO L231 Difference]: Finished difference. Result has 219 places, 121 transitions, 748 flow [2024-06-14 11:26:31,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=763, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=748, PETRI_PLACES=219, PETRI_TRANSITIONS=121} [2024-06-14 11:26:31,781 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 187 predicate places. [2024-06-14 11:26:31,781 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 121 transitions, 748 flow [2024-06-14 11:26:31,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:31,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:26:31,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:26:31,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-14 11:26:31,782 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:26:31,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:26:31,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1846709238, now seen corresponding path program 12 times [2024-06-14 11:26:31,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:26:31,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477917319] [2024-06-14 11:26:31,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:26:31,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:26:31,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:26:33,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:26:33,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:26:33,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477917319] [2024-06-14 11:26:33,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477917319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:26:33,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:26:33,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-14 11:26:33,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039646086] [2024-06-14 11:26:33,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:26:33,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-14 11:26:33,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:26:33,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-14 11:26:33,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-14 11:26:34,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:26:34,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 121 transitions, 748 flow. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:34,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:26:34,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:26:34,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:26:34,577 INFO L124 PetriNetUnfolderBase]: 342/700 cut-off events. [2024-06-14 11:26:34,577 INFO L125 PetriNetUnfolderBase]: For 42529/42529 co-relation queries the response was YES. [2024-06-14 11:26:34,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2529 conditions, 700 events. 342/700 cut-off events. For 42529/42529 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3483 event pairs, 80 based on Foata normal form. 6/705 useless extension candidates. Maximal degree in co-relation 2431. Up to 586 conditions per place. [2024-06-14 11:26:34,582 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 112 selfloop transitions, 13 changer transitions 14/141 dead transitions. [2024-06-14 11:26:34,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 141 transitions, 1074 flow [2024-06-14 11:26:34,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:26:34,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:26:34,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 114 transitions. [2024-06-14 11:26:34,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2878787878787879 [2024-06-14 11:26:34,583 INFO L175 Difference]: Start difference. First operand has 219 places, 121 transitions, 748 flow. Second operand 12 states and 114 transitions. [2024-06-14 11:26:34,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 141 transitions, 1074 flow [2024-06-14 11:26:34,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 141 transitions, 1038 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-14 11:26:34,650 INFO L231 Difference]: Finished difference. Result has 210 places, 117 transitions, 723 flow [2024-06-14 11:26:34,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=723, PETRI_PLACES=210, PETRI_TRANSITIONS=117} [2024-06-14 11:26:34,651 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 178 predicate places. [2024-06-14 11:26:34,651 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 117 transitions, 723 flow [2024-06-14 11:26:34,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:34,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:26:34,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:26:34,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-14 11:26:34,651 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:26:34,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:26:34,651 INFO L85 PathProgramCache]: Analyzing trace with hash 729857078, now seen corresponding path program 13 times [2024-06-14 11:26:34,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:26:34,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932003134] [2024-06-14 11:26:34,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:26:34,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:26:34,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:26:37,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:26:37,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:26:37,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932003134] [2024-06-14 11:26:37,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932003134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:26:37,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:26:37,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-14 11:26:37,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880712194] [2024-06-14 11:26:37,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:26:37,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-14 11:26:37,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:26:37,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-14 11:26:37,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-06-14 11:26:37,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:26:37,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 117 transitions, 723 flow. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:37,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:26:37,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:26:37,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:26:37,776 INFO L124 PetriNetUnfolderBase]: 328/674 cut-off events. [2024-06-14 11:26:37,776 INFO L125 PetriNetUnfolderBase]: For 38589/38589 co-relation queries the response was YES. [2024-06-14 11:26:37,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2431 conditions, 674 events. 328/674 cut-off events. For 38589/38589 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3303 event pairs, 76 based on Foata normal form. 6/679 useless extension candidates. Maximal degree in co-relation 2337. Up to 560 conditions per place. [2024-06-14 11:26:37,781 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 98 selfloop transitions, 3 changer transitions 34/137 dead transitions. [2024-06-14 11:26:37,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 137 transitions, 1041 flow [2024-06-14 11:26:37,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:26:37,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:26:37,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 113 transitions. [2024-06-14 11:26:37,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28535353535353536 [2024-06-14 11:26:37,781 INFO L175 Difference]: Start difference. First operand has 210 places, 117 transitions, 723 flow. Second operand 12 states and 113 transitions. [2024-06-14 11:26:37,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 137 transitions, 1041 flow [2024-06-14 11:26:37,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 137 transitions, 1007 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 11:26:37,837 INFO L231 Difference]: Finished difference. Result has 204 places, 102 transitions, 598 flow [2024-06-14 11:26:37,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=598, PETRI_PLACES=204, PETRI_TRANSITIONS=102} [2024-06-14 11:26:37,838 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 172 predicate places. [2024-06-14 11:26:37,838 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 102 transitions, 598 flow [2024-06-14 11:26:37,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:37,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:26:37,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:26:37,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-14 11:26:37,838 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:26:37,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:26:37,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1058945624, now seen corresponding path program 14 times [2024-06-14 11:26:37,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:26:37,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445945769] [2024-06-14 11:26:37,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:26:37,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:26:37,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:26:39,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:26:39,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:26:39,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445945769] [2024-06-14 11:26:39,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445945769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:26:39,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:26:39,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:26:39,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138026536] [2024-06-14 11:26:39,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:26:39,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:26:39,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:26:39,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:26:39,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:26:39,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:26:39,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 102 transitions, 598 flow. Second operand has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:39,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:26:39,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:26:39,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:26:39,928 INFO L124 PetriNetUnfolderBase]: 289/589 cut-off events. [2024-06-14 11:26:39,928 INFO L125 PetriNetUnfolderBase]: For 35556/35556 co-relation queries the response was YES. [2024-06-14 11:26:39,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2106 conditions, 589 events. 289/589 cut-off events. For 35556/35556 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2856 event pairs, 73 based on Foata normal form. 6/594 useless extension candidates. Maximal degree in co-relation 2015. Up to 526 conditions per place. [2024-06-14 11:26:39,932 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 91 selfloop transitions, 8 changer transitions 16/117 dead transitions. [2024-06-14 11:26:39,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 117 transitions, 862 flow [2024-06-14 11:26:39,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:26:39,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:26:39,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 107 transitions. [2024-06-14 11:26:39,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2702020202020202 [2024-06-14 11:26:39,933 INFO L175 Difference]: Start difference. First operand has 204 places, 102 transitions, 598 flow. Second operand 12 states and 107 transitions. [2024-06-14 11:26:39,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 117 transitions, 862 flow [2024-06-14 11:26:39,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 117 transitions, 830 flow, removed 11 selfloop flow, removed 15 redundant places. [2024-06-14 11:26:39,977 INFO L231 Difference]: Finished difference. Result has 182 places, 97 transitions, 561 flow [2024-06-14 11:26:39,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=561, PETRI_PLACES=182, PETRI_TRANSITIONS=97} [2024-06-14 11:26:39,977 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 150 predicate places. [2024-06-14 11:26:39,977 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 97 transitions, 561 flow [2024-06-14 11:26:39,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:39,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:26:39,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:26:39,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-14 11:26:39,978 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:26:39,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:26:39,978 INFO L85 PathProgramCache]: Analyzing trace with hash 604984732, now seen corresponding path program 15 times [2024-06-14 11:26:39,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:26:39,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877565799] [2024-06-14 11:26:39,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:26:39,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:26:39,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:26:42,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:26:42,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:26:42,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877565799] [2024-06-14 11:26:42,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877565799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:26:42,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:26:42,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-14 11:26:42,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412660962] [2024-06-14 11:26:42,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:26:42,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-14 11:26:42,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:26:42,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-14 11:26:42,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-06-14 11:26:42,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:26:42,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 97 transitions, 561 flow. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:42,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:26:42,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:26:42,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:26:43,269 INFO L124 PetriNetUnfolderBase]: 278/564 cut-off events. [2024-06-14 11:26:43,269 INFO L125 PetriNetUnfolderBase]: For 29364/29364 co-relation queries the response was YES. [2024-06-14 11:26:43,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1974 conditions, 564 events. 278/564 cut-off events. For 29364/29364 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2683 event pairs, 43 based on Foata normal form. 6/569 useless extension candidates. Maximal degree in co-relation 1892. Up to 384 conditions per place. [2024-06-14 11:26:43,274 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 75 selfloop transitions, 31 changer transitions 13/121 dead transitions. [2024-06-14 11:26:43,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 121 transitions, 849 flow [2024-06-14 11:26:43,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:26:43,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:26:43,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-14 11:26:43,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31565656565656564 [2024-06-14 11:26:43,275 INFO L175 Difference]: Start difference. First operand has 182 places, 97 transitions, 561 flow. Second operand 12 states and 125 transitions. [2024-06-14 11:26:43,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 121 transitions, 849 flow [2024-06-14 11:26:43,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 121 transitions, 823 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-14 11:26:43,327 INFO L231 Difference]: Finished difference. Result has 174 places, 93 transitions, 580 flow [2024-06-14 11:26:43,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=535, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=580, PETRI_PLACES=174, PETRI_TRANSITIONS=93} [2024-06-14 11:26:43,327 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 142 predicate places. [2024-06-14 11:26:43,327 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 93 transitions, 580 flow [2024-06-14 11:26:43,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:43,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:26:43,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:26:43,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-14 11:26:43,327 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:26:43,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:26:43,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1015570510, now seen corresponding path program 16 times [2024-06-14 11:26:43,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:26:43,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085895756] [2024-06-14 11:26:43,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:26:43,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:26:43,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:26:46,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:26:46,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:26:46,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085895756] [2024-06-14 11:26:46,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085895756] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:26:46,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:26:46,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:26:46,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001590646] [2024-06-14 11:26:46,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:26:46,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:26:46,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:26:46,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:26:46,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:26:46,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:26:46,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 93 transitions, 580 flow. Second operand has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:46,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:26:46,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:26:46,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:26:46,823 INFO L124 PetriNetUnfolderBase]: 266/540 cut-off events. [2024-06-14 11:26:46,823 INFO L125 PetriNetUnfolderBase]: For 26184/26184 co-relation queries the response was YES. [2024-06-14 11:26:46,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1956 conditions, 540 events. 266/540 cut-off events. For 26184/26184 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2520 event pairs, 45 based on Foata normal form. 6/545 useless extension candidates. Maximal degree in co-relation 1878. Up to 352 conditions per place. [2024-06-14 11:26:46,827 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 74 selfloop transitions, 28 changer transitions 13/117 dead transitions. [2024-06-14 11:26:46,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 117 transitions, 860 flow [2024-06-14 11:26:46,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:26:46,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:26:46,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-14 11:26:46,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-06-14 11:26:46,827 INFO L175 Difference]: Start difference. First operand has 174 places, 93 transitions, 580 flow. Second operand 12 states and 126 transitions. [2024-06-14 11:26:46,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 117 transitions, 860 flow [2024-06-14 11:26:46,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 117 transitions, 790 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 11:26:46,861 INFO L231 Difference]: Finished difference. Result has 168 places, 89 transitions, 549 flow [2024-06-14 11:26:46,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=549, PETRI_PLACES=168, PETRI_TRANSITIONS=89} [2024-06-14 11:26:46,861 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 136 predicate places. [2024-06-14 11:26:46,862 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 89 transitions, 549 flow [2024-06-14 11:26:46,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:46,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:26:46,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:26:46,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-14 11:26:46,862 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:26:46,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:26:46,862 INFO L85 PathProgramCache]: Analyzing trace with hash 377083582, now seen corresponding path program 17 times [2024-06-14 11:26:46,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:26:46,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665326740] [2024-06-14 11:26:46,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:26:46,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:26:46,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:26:49,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:26:49,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:26:49,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665326740] [2024-06-14 11:26:49,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665326740] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:26:49,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:26:49,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:26:49,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635557497] [2024-06-14 11:26:49,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:26:49,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:26:49,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:26:49,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:26:49,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:26:49,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:26:49,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 89 transitions, 549 flow. Second operand has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:49,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:26:49,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:26:49,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:26:49,749 INFO L124 PetriNetUnfolderBase]: 254/516 cut-off events. [2024-06-14 11:26:49,749 INFO L125 PetriNetUnfolderBase]: For 23866/23866 co-relation queries the response was YES. [2024-06-14 11:26:49,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1857 conditions, 516 events. 254/516 cut-off events. For 23866/23866 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2379 event pairs, 43 based on Foata normal form. 6/521 useless extension candidates. Maximal degree in co-relation 1782. Up to 350 conditions per place. [2024-06-14 11:26:49,752 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 69 selfloop transitions, 29 changer transitions 11/111 dead transitions. [2024-06-14 11:26:49,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 111 transitions, 813 flow [2024-06-14 11:26:49,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:26:49,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:26:49,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-14 11:26:49,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3055555555555556 [2024-06-14 11:26:49,753 INFO L175 Difference]: Start difference. First operand has 168 places, 89 transitions, 549 flow. Second operand 12 states and 121 transitions. [2024-06-14 11:26:49,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 111 transitions, 813 flow [2024-06-14 11:26:49,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 111 transitions, 749 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 11:26:49,784 INFO L231 Difference]: Finished difference. Result has 162 places, 86 transitions, 532 flow [2024-06-14 11:26:49,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=532, PETRI_PLACES=162, PETRI_TRANSITIONS=86} [2024-06-14 11:26:49,784 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 130 predicate places. [2024-06-14 11:26:49,784 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 86 transitions, 532 flow [2024-06-14 11:26:49,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:49,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:26:49,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:26:49,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-14 11:26:49,785 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:26:49,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:26:49,785 INFO L85 PathProgramCache]: Analyzing trace with hash 376910602, now seen corresponding path program 18 times [2024-06-14 11:26:49,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:26:49,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587629835] [2024-06-14 11:26:49,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:26:49,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:26:49,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:26:51,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:26:51,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:26:51,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587629835] [2024-06-14 11:26:51,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587629835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:26:51,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:26:51,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-14 11:26:51,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779057068] [2024-06-14 11:26:51,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:26:51,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-14 11:26:51,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:26:51,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-14 11:26:51,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-06-14 11:26:51,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:26:51,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 86 transitions, 532 flow. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:51,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:26:51,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:26:51,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:26:52,412 INFO L124 PetriNetUnfolderBase]: 244/498 cut-off events. [2024-06-14 11:26:52,412 INFO L125 PetriNetUnfolderBase]: For 21640/21640 co-relation queries the response was YES. [2024-06-14 11:26:52,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1794 conditions, 498 events. 244/498 cut-off events. For 21640/21640 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2273 event pairs, 41 based on Foata normal form. 6/503 useless extension candidates. Maximal degree in co-relation 1722. Up to 332 conditions per place. [2024-06-14 11:26:52,414 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 63 selfloop transitions, 25 changer transitions 18/108 dead transitions. [2024-06-14 11:26:52,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 108 transitions, 790 flow [2024-06-14 11:26:52,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:26:52,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:26:52,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-14 11:26:52,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30303030303030304 [2024-06-14 11:26:52,415 INFO L175 Difference]: Start difference. First operand has 162 places, 86 transitions, 532 flow. Second operand 12 states and 120 transitions. [2024-06-14 11:26:52,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 108 transitions, 790 flow [2024-06-14 11:26:52,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 108 transitions, 726 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 11:26:52,440 INFO L231 Difference]: Finished difference. Result has 158 places, 80 transitions, 491 flow [2024-06-14 11:26:52,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=491, PETRI_PLACES=158, PETRI_TRANSITIONS=80} [2024-06-14 11:26:52,441 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 126 predicate places. [2024-06-14 11:26:52,441 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 80 transitions, 491 flow [2024-06-14 11:26:52,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:52,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:26:52,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:26:52,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-14 11:26:52,441 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:26:52,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:26:52,441 INFO L85 PathProgramCache]: Analyzing trace with hash 567416724, now seen corresponding path program 19 times [2024-06-14 11:26:52,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:26:52,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369558766] [2024-06-14 11:26:52,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:26:52,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:26:52,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:26:55,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:26:55,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:26:55,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369558766] [2024-06-14 11:26:55,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369558766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:26:55,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:26:55,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-14 11:26:55,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067397382] [2024-06-14 11:26:55,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:26:55,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-14 11:26:55,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:26:55,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-14 11:26:55,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-06-14 11:26:55,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:26:55,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 80 transitions, 491 flow. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:55,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:26:55,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:26:55,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:26:56,228 INFO L124 PetriNetUnfolderBase]: 229/465 cut-off events. [2024-06-14 11:26:56,228 INFO L125 PetriNetUnfolderBase]: For 20272/20272 co-relation queries the response was YES. [2024-06-14 11:26:56,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1684 conditions, 465 events. 229/465 cut-off events. For 20272/20272 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2048 event pairs, 51 based on Foata normal form. 6/470 useless extension candidates. Maximal degree in co-relation 1614. Up to 292 conditions per place. [2024-06-14 11:26:56,230 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 61 selfloop transitions, 25 changer transitions 11/99 dead transitions. [2024-06-14 11:26:56,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 99 transitions, 725 flow [2024-06-14 11:26:56,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:26:56,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:26:56,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-14 11:26:56,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3085399449035813 [2024-06-14 11:26:56,231 INFO L175 Difference]: Start difference. First operand has 158 places, 80 transitions, 491 flow. Second operand 11 states and 112 transitions. [2024-06-14 11:26:56,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 99 transitions, 725 flow [2024-06-14 11:26:56,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 99 transitions, 663 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-14 11:26:56,257 INFO L231 Difference]: Finished difference. Result has 147 places, 76 transitions, 462 flow [2024-06-14 11:26:56,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=462, PETRI_PLACES=147, PETRI_TRANSITIONS=76} [2024-06-14 11:26:56,257 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 115 predicate places. [2024-06-14 11:26:56,258 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 76 transitions, 462 flow [2024-06-14 11:26:56,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:56,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:26:56,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:26:56,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-14 11:26:56,258 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:26:56,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:26:56,258 INFO L85 PathProgramCache]: Analyzing trace with hash 787669360, now seen corresponding path program 20 times [2024-06-14 11:26:56,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:26:56,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629950689] [2024-06-14 11:26:56,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:26:56,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:26:56,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:26:58,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:26:58,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:26:58,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629950689] [2024-06-14 11:26:58,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629950689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:26:58,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:26:58,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-14 11:26:58,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923713168] [2024-06-14 11:26:58,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:26:58,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-14 11:26:58,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:26:58,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-14 11:26:58,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-06-14 11:26:58,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:26:58,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 76 transitions, 462 flow. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:58,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:26:58,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:26:58,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:26:58,985 INFO L124 PetriNetUnfolderBase]: 217/441 cut-off events. [2024-06-14 11:26:58,985 INFO L125 PetriNetUnfolderBase]: For 16896/16896 co-relation queries the response was YES. [2024-06-14 11:26:58,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1579 conditions, 441 events. 217/441 cut-off events. For 16896/16896 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1914 event pairs, 43 based on Foata normal form. 6/446 useless extension candidates. Maximal degree in co-relation 1514. Up to 290 conditions per place. [2024-06-14 11:26:58,987 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 63 selfloop transitions, 22 changer transitions 11/98 dead transitions. [2024-06-14 11:26:58,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 98 transitions, 700 flow [2024-06-14 11:26:58,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:26:58,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:26:58,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 122 transitions. [2024-06-14 11:26:58,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30808080808080807 [2024-06-14 11:26:58,988 INFO L175 Difference]: Start difference. First operand has 147 places, 76 transitions, 462 flow. Second operand 12 states and 122 transitions. [2024-06-14 11:26:58,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 98 transitions, 700 flow [2024-06-14 11:26:59,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 98 transitions, 642 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 11:26:59,010 INFO L231 Difference]: Finished difference. Result has 142 places, 73 transitions, 437 flow [2024-06-14 11:26:59,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=437, PETRI_PLACES=142, PETRI_TRANSITIONS=73} [2024-06-14 11:26:59,011 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 110 predicate places. [2024-06-14 11:26:59,011 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 73 transitions, 437 flow [2024-06-14 11:26:59,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:59,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:26:59,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:26:59,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-14 11:26:59,011 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:26:59,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:26:59,012 INFO L85 PathProgramCache]: Analyzing trace with hash 787496380, now seen corresponding path program 21 times [2024-06-14 11:26:59,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:26:59,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594776637] [2024-06-14 11:26:59,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:26:59,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:26:59,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:27:01,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:27:01,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:27:01,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594776637] [2024-06-14 11:27:01,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594776637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:27:01,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:27:01,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-14 11:27:01,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773435718] [2024-06-14 11:27:01,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:27:01,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-14 11:27:01,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:27:01,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-14 11:27:01,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-06-14 11:27:01,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:27:01,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 73 transitions, 437 flow. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:27:01,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:27:01,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:27:01,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:27:01,718 INFO L124 PetriNetUnfolderBase]: 207/423 cut-off events. [2024-06-14 11:27:01,718 INFO L125 PetriNetUnfolderBase]: For 15038/15038 co-relation queries the response was YES. [2024-06-14 11:27:01,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1500 conditions, 423 events. 207/423 cut-off events. For 15038/15038 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1796 event pairs, 41 based on Foata normal form. 6/428 useless extension candidates. Maximal degree in co-relation 1438. Up to 272 conditions per place. [2024-06-14 11:27:01,720 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 58 selfloop transitions, 19 changer transitions 16/95 dead transitions. [2024-06-14 11:27:01,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 95 transitions, 669 flow [2024-06-14 11:27:01,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:27:01,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:27:01,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-14 11:27:01,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3055555555555556 [2024-06-14 11:27:01,720 INFO L175 Difference]: Start difference. First operand has 142 places, 73 transitions, 437 flow. Second operand 12 states and 121 transitions. [2024-06-14 11:27:01,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 95 transitions, 669 flow [2024-06-14 11:27:01,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 95 transitions, 619 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 11:27:01,740 INFO L231 Difference]: Finished difference. Result has 138 places, 68 transitions, 404 flow [2024-06-14 11:27:01,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=404, PETRI_PLACES=138, PETRI_TRANSITIONS=68} [2024-06-14 11:27:01,741 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 106 predicate places. [2024-06-14 11:27:01,741 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 68 transitions, 404 flow [2024-06-14 11:27:01,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:27:01,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:27:01,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:27:01,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-14 11:27:01,742 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:27:01,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:27:01,742 INFO L85 PathProgramCache]: Analyzing trace with hash 339515574, now seen corresponding path program 22 times [2024-06-14 11:27:01,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:27:01,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404238503] [2024-06-14 11:27:01,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:27:01,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:27:01,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:27:04,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:27:04,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:27:04,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404238503] [2024-06-14 11:27:04,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404238503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:27:04,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:27:04,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:27:04,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671161739] [2024-06-14 11:27:04,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:27:04,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:27:04,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:27:04,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:27:04,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:27:04,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:27:04,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 68 transitions, 404 flow. Second operand has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:27:04,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:27:04,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:27:04,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:27:04,450 INFO L124 PetriNetUnfolderBase]: 191/391 cut-off events. [2024-06-14 11:27:04,451 INFO L125 PetriNetUnfolderBase]: For 13896/13896 co-relation queries the response was YES. [2024-06-14 11:27:04,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1394 conditions, 391 events. 191/391 cut-off events. For 13896/13896 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1605 event pairs, 47 based on Foata normal form. 6/396 useless extension candidates. Maximal degree in co-relation 1334. Up to 254 conditions per place. [2024-06-14 11:27:04,452 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 54 selfloop transitions, 21 changer transitions 9/86 dead transitions. [2024-06-14 11:27:04,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 86 transitions, 610 flow [2024-06-14 11:27:04,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:27:04,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:27:04,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-14 11:27:04,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30578512396694213 [2024-06-14 11:27:04,453 INFO L175 Difference]: Start difference. First operand has 138 places, 68 transitions, 404 flow. Second operand 11 states and 111 transitions. [2024-06-14 11:27:04,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 86 transitions, 610 flow [2024-06-14 11:27:04,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 86 transitions, 562 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-14 11:27:04,468 INFO L231 Difference]: Finished difference. Result has 129 places, 65 transitions, 387 flow [2024-06-14 11:27:04,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=387, PETRI_PLACES=129, PETRI_TRANSITIONS=65} [2024-06-14 11:27:04,468 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 97 predicate places. [2024-06-14 11:27:04,468 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 65 transitions, 387 flow [2024-06-14 11:27:04,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:27:04,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:27:04,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:27:04,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-14 11:27:04,468 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:27:04,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:27:04,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1095718834, now seen corresponding path program 23 times [2024-06-14 11:27:04,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:27:04,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473367216] [2024-06-14 11:27:04,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:27:04,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:27:04,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:27:06,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:27:06,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:27:06,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473367216] [2024-06-14 11:27:06,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473367216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:27:06,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:27:06,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:27:06,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543730808] [2024-06-14 11:27:06,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:27:06,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:27:06,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:27:06,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:27:06,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:27:06,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:27:06,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 65 transitions, 387 flow. Second operand has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:27:06,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:27:06,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:27:06,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:27:07,169 INFO L124 PetriNetUnfolderBase]: 181/373 cut-off events. [2024-06-14 11:27:07,169 INFO L125 PetriNetUnfolderBase]: For 11644/11644 co-relation queries the response was YES. [2024-06-14 11:27:07,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1324 conditions, 373 events. 181/373 cut-off events. For 11644/11644 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1511 event pairs, 41 based on Foata normal form. 6/378 useless extension candidates. Maximal degree in co-relation 1268. Up to 236 conditions per place. [2024-06-14 11:27:07,171 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 54 selfloop transitions, 18 changer transitions 11/85 dead transitions. [2024-06-14 11:27:07,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 85 transitions, 595 flow [2024-06-14 11:27:07,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:27:07,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:27:07,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 117 transitions. [2024-06-14 11:27:07,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29545454545454547 [2024-06-14 11:27:07,172 INFO L175 Difference]: Start difference. First operand has 129 places, 65 transitions, 387 flow. Second operand 12 states and 117 transitions. [2024-06-14 11:27:07,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 85 transitions, 595 flow [2024-06-14 11:27:07,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 85 transitions, 547 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 11:27:07,183 INFO L231 Difference]: Finished difference. Result has 126 places, 62 transitions, 364 flow [2024-06-14 11:27:07,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=364, PETRI_PLACES=126, PETRI_TRANSITIONS=62} [2024-06-14 11:27:07,184 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 94 predicate places. [2024-06-14 11:27:07,184 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 62 transitions, 364 flow [2024-06-14 11:27:07,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:27:07,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:27:07,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:27:07,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-14 11:27:07,184 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:27:07,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:27:07,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1385959212, now seen corresponding path program 24 times [2024-06-14 11:27:07,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:27:07,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181313580] [2024-06-14 11:27:07,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:27:07,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:27:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:27:09,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:27:09,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:27:09,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181313580] [2024-06-14 11:27:09,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181313580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:27:09,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:27:09,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:27:09,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432387384] [2024-06-14 11:27:09,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:27:09,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:27:09,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:27:09,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:27:09,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:27:09,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:27:09,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 62 transitions, 364 flow. Second operand has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:27:09,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:27:09,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:27:09,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:27:09,603 INFO L124 PetriNetUnfolderBase]: 171/355 cut-off events. [2024-06-14 11:27:09,603 INFO L125 PetriNetUnfolderBase]: For 10608/10608 co-relation queries the response was YES. [2024-06-14 11:27:09,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1250 conditions, 355 events. 171/355 cut-off events. For 10608/10608 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1413 event pairs, 39 based on Foata normal form. 6/360 useless extension candidates. Maximal degree in co-relation 1196. Up to 218 conditions per place. [2024-06-14 11:27:09,604 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 47 selfloop transitions, 17 changer transitions 16/82 dead transitions. [2024-06-14 11:27:09,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 82 transitions, 566 flow [2024-06-14 11:27:09,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:27:09,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:27:09,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 116 transitions. [2024-06-14 11:27:09,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29292929292929293 [2024-06-14 11:27:09,605 INFO L175 Difference]: Start difference. First operand has 126 places, 62 transitions, 364 flow. Second operand 12 states and 116 transitions. [2024-06-14 11:27:09,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 82 transitions, 566 flow [2024-06-14 11:27:09,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 82 transitions, 524 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 11:27:09,614 INFO L231 Difference]: Finished difference. Result has 122 places, 57 transitions, 335 flow [2024-06-14 11:27:09,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=335, PETRI_PLACES=122, PETRI_TRANSITIONS=57} [2024-06-14 11:27:09,614 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 90 predicate places. [2024-06-14 11:27:09,614 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 57 transitions, 335 flow [2024-06-14 11:27:09,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:27:09,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:27:09,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:27:09,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-14 11:27:09,615 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:27:09,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:27:09,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1095891814, now seen corresponding path program 25 times [2024-06-14 11:27:09,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:27:09,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680695167] [2024-06-14 11:27:09,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:27:09,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:27:09,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:27:11,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:27:11,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:27:11,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680695167] [2024-06-14 11:27:11,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680695167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:27:11,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:27:11,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:27:11,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175426123] [2024-06-14 11:27:11,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:27:11,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:27:11,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:27:11,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:27:11,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:27:11,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:27:11,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 57 transitions, 335 flow. Second operand has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:27:11,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:27:11,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:27:11,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:27:12,171 INFO L124 PetriNetUnfolderBase]: 155/323 cut-off events. [2024-06-14 11:27:12,171 INFO L125 PetriNetUnfolderBase]: For 9610/9610 co-relation queries the response was YES. [2024-06-14 11:27:12,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1152 conditions, 323 events. 155/323 cut-off events. For 9610/9610 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1243 event pairs, 37 based on Foata normal form. 6/328 useless extension candidates. Maximal degree in co-relation 1100. Up to 200 conditions per place. [2024-06-14 11:27:12,173 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 46 selfloop transitions, 15 changer transitions 14/77 dead transitions. [2024-06-14 11:27:12,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 77 transitions, 527 flow [2024-06-14 11:27:12,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:27:12,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:27:12,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 116 transitions. [2024-06-14 11:27:12,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29292929292929293 [2024-06-14 11:27:12,174 INFO L175 Difference]: Start difference. First operand has 122 places, 57 transitions, 335 flow. Second operand 12 states and 116 transitions. [2024-06-14 11:27:12,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 77 transitions, 527 flow [2024-06-14 11:27:12,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 77 transitions, 483 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-14 11:27:12,182 INFO L231 Difference]: Finished difference. Result has 114 places, 53 transitions, 306 flow [2024-06-14 11:27:12,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=306, PETRI_PLACES=114, PETRI_TRANSITIONS=53} [2024-06-14 11:27:12,182 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 82 predicate places. [2024-06-14 11:27:12,182 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 53 transitions, 306 flow [2024-06-14 11:27:12,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:27:12,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:27:12,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:27:12,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-14 11:27:12,182 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:27:12,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:27:12,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1100360464, now seen corresponding path program 26 times [2024-06-14 11:27:12,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:27:12,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965335643] [2024-06-14 11:27:12,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:27:12,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:27:12,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:27:14,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:27:14,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:27:14,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965335643] [2024-06-14 11:27:14,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965335643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:27:14,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:27:14,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-14 11:27:14,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285857249] [2024-06-14 11:27:14,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:27:14,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-14 11:27:14,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:27:14,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-14 11:27:14,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-14 11:27:14,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:27:14,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 53 transitions, 306 flow. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:27:14,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:27:14,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:27:14,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:27:15,069 INFO L124 PetriNetUnfolderBase]: 141/297 cut-off events. [2024-06-14 11:27:15,069 INFO L125 PetriNetUnfolderBase]: For 7796/7796 co-relation queries the response was YES. [2024-06-14 11:27:15,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1048 conditions, 297 events. 141/297 cut-off events. For 7796/7796 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1102 event pairs, 33 based on Foata normal form. 6/302 useless extension candidates. Maximal degree in co-relation 1000. Up to 174 conditions per place. [2024-06-14 11:27:15,071 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 39 selfloop transitions, 11 changer transitions 21/73 dead transitions. [2024-06-14 11:27:15,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 73 transitions, 490 flow [2024-06-14 11:27:15,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:27:15,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:27:15,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 115 transitions. [2024-06-14 11:27:15,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2904040404040404 [2024-06-14 11:27:15,071 INFO L175 Difference]: Start difference. First operand has 114 places, 53 transitions, 306 flow. Second operand 12 states and 115 transitions. [2024-06-14 11:27:15,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 73 transitions, 490 flow [2024-06-14 11:27:15,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 73 transitions, 452 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 11:27:15,080 INFO L231 Difference]: Finished difference. Result has 108 places, 46 transitions, 259 flow [2024-06-14 11:27:15,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=259, PETRI_PLACES=108, PETRI_TRANSITIONS=46} [2024-06-14 11:27:15,080 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 76 predicate places. [2024-06-14 11:27:15,080 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 46 transitions, 259 flow [2024-06-14 11:27:15,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:27:15,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:27:15,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:27:15,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-14 11:27:15,081 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:27:15,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:27:15,081 INFO L85 PathProgramCache]: Analyzing trace with hash 103007124, now seen corresponding path program 27 times [2024-06-14 11:27:15,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:27:15,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563666516] [2024-06-14 11:27:15,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:27:15,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:27:15,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:27:17,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:27:17,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:27:17,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563666516] [2024-06-14 11:27:17,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563666516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:27:17,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:27:17,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:27:17,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309666696] [2024-06-14 11:27:17,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:27:17,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:27:17,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:27:17,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:27:17,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:27:17,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:27:17,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 46 transitions, 259 flow. Second operand has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:27:17,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:27:17,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:27:17,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:27:17,715 INFO L124 PetriNetUnfolderBase]: 122/256 cut-off events. [2024-06-14 11:27:17,716 INFO L125 PetriNetUnfolderBase]: For 6575/6575 co-relation queries the response was YES. [2024-06-14 11:27:17,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 911 conditions, 256 events. 122/256 cut-off events. For 6575/6575 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 876 event pairs, 37 based on Foata normal form. 6/261 useless extension candidates. Maximal degree in co-relation 866. Up to 156 conditions per place. [2024-06-14 11:27:17,717 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 38 selfloop transitions, 13 changer transitions 9/62 dead transitions. [2024-06-14 11:27:17,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 62 transitions, 413 flow [2024-06-14 11:27:17,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:27:17,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:27:17,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 104 transitions. [2024-06-14 11:27:17,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2865013774104683 [2024-06-14 11:27:17,718 INFO L175 Difference]: Start difference. First operand has 108 places, 46 transitions, 259 flow. Second operand 11 states and 104 transitions. [2024-06-14 11:27:17,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 62 transitions, 413 flow [2024-06-14 11:27:17,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 62 transitions, 377 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-14 11:27:17,722 INFO L231 Difference]: Finished difference. Result has 95 places, 43 transitions, 238 flow [2024-06-14 11:27:17,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=238, PETRI_PLACES=95, PETRI_TRANSITIONS=43} [2024-06-14 11:27:17,723 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 63 predicate places. [2024-06-14 11:27:17,723 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 43 transitions, 238 flow [2024-06-14 11:27:17,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:27:17,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:27:17,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:27:17,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-14 11:27:17,723 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:27:17,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:27:17,723 INFO L85 PathProgramCache]: Analyzing trace with hash -63399636, now seen corresponding path program 28 times [2024-06-14 11:27:17,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:27:17,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593749779] [2024-06-14 11:27:17,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:27:17,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:27:17,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:27:19,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:27:19,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:27:19,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593749779] [2024-06-14 11:27:19,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593749779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:27:19,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:27:19,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-14 11:27:19,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668879437] [2024-06-14 11:27:19,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:27:19,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-14 11:27:19,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:27:19,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-14 11:27:19,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-14 11:27:19,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:27:19,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 43 transitions, 238 flow. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:27:19,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:27:19,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:27:19,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:27:20,265 INFO L124 PetriNetUnfolderBase]: 112/238 cut-off events. [2024-06-14 11:27:20,265 INFO L125 PetriNetUnfolderBase]: For 4384/4384 co-relation queries the response was YES. [2024-06-14 11:27:20,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 825 conditions, 238 events. 112/238 cut-off events. For 4384/4384 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 793 event pairs, 29 based on Foata normal form. 6/243 useless extension candidates. Maximal degree in co-relation 786. Up to 138 conditions per place. [2024-06-14 11:27:20,266 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 34 selfloop transitions, 11 changer transitions 14/61 dead transitions. [2024-06-14 11:27:20,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 61 transitions, 394 flow [2024-06-14 11:27:20,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:27:20,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:27:20,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 110 transitions. [2024-06-14 11:27:20,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2777777777777778 [2024-06-14 11:27:20,267 INFO L175 Difference]: Start difference. First operand has 95 places, 43 transitions, 238 flow. Second operand 12 states and 110 transitions. [2024-06-14 11:27:20,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 61 transitions, 394 flow [2024-06-14 11:27:20,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 61 transitions, 362 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 11:27:20,271 INFO L231 Difference]: Finished difference. Result has 92 places, 39 transitions, 213 flow [2024-06-14 11:27:20,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=213, PETRI_PLACES=92, PETRI_TRANSITIONS=39} [2024-06-14 11:27:20,271 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 60 predicate places. [2024-06-14 11:27:20,271 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 39 transitions, 213 flow [2024-06-14 11:27:20,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:27:20,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:27:20,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:27:20,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-14 11:27:20,271 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:27:20,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:27:20,271 INFO L85 PathProgramCache]: Analyzing trace with hash -501897632, now seen corresponding path program 29 times [2024-06-14 11:27:20,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:27:20,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308850291] [2024-06-14 11:27:20,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:27:20,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:27:20,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:27:22,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:27:22,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:27:22,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308850291] [2024-06-14 11:27:22,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308850291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:27:22,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:27:22,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:27:22,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477128040] [2024-06-14 11:27:22,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:27:22,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:27:22,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:27:22,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:27:22,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:27:22,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:27:22,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 39 transitions, 213 flow. Second operand has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:27:22,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:27:22,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:27:22,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:27:23,145 INFO L124 PetriNetUnfolderBase]: 98/212 cut-off events. [2024-06-14 11:27:23,145 INFO L125 PetriNetUnfolderBase]: For 3754/3754 co-relation queries the response was YES. [2024-06-14 11:27:23,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 737 conditions, 212 events. 98/212 cut-off events. For 3754/3754 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 659 event pairs, 25 based on Foata normal form. 6/217 useless extension candidates. Maximal degree in co-relation 700. Up to 112 conditions per place. [2024-06-14 11:27:23,146 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 28 selfloop transitions, 8 changer transitions 19/57 dead transitions. [2024-06-14 11:27:23,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 57 transitions, 361 flow [2024-06-14 11:27:23,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:27:23,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:27:23,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 109 transitions. [2024-06-14 11:27:23,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27525252525252525 [2024-06-14 11:27:23,147 INFO L175 Difference]: Start difference. First operand has 92 places, 39 transitions, 213 flow. Second operand 12 states and 109 transitions. [2024-06-14 11:27:23,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 57 transitions, 361 flow [2024-06-14 11:27:23,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 57 transitions, 331 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 11:27:23,150 INFO L231 Difference]: Finished difference. Result has 86 places, 33 transitions, 174 flow [2024-06-14 11:27:23,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=174, PETRI_PLACES=86, PETRI_TRANSITIONS=33} [2024-06-14 11:27:23,150 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 54 predicate places. [2024-06-14 11:27:23,150 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 33 transitions, 174 flow [2024-06-14 11:27:23,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:27:23,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:27:23,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:27:23,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-14 11:27:23,150 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:27:23,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:27:23,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1333706964, now seen corresponding path program 30 times [2024-06-14 11:27:23,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:27:23,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366227221] [2024-06-14 11:27:23,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:27:23,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:27:23,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:27:25,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:27:25,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:27:25,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366227221] [2024-06-14 11:27:25,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366227221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:27:25,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:27:25,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:27:25,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937972672] [2024-06-14 11:27:25,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:27:25,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:27:25,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:27:25,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:27:25,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:27:25,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:27:25,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 33 transitions, 174 flow. Second operand has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:27:25,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:27:25,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:27:25,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:27:25,847 INFO L124 PetriNetUnfolderBase]: 78/172 cut-off events. [2024-06-14 11:27:25,848 INFO L125 PetriNetUnfolderBase]: For 2898/2898 co-relation queries the response was YES. [2024-06-14 11:27:25,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 604 conditions, 172 events. 78/172 cut-off events. For 2898/2898 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 491 event pairs, 23 based on Foata normal form. 6/177 useless extension candidates. Maximal degree in co-relation 570. Up to 94 conditions per place. [2024-06-14 11:27:25,848 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 25 selfloop transitions, 8 changer transitions 14/49 dead transitions. [2024-06-14 11:27:25,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 49 transitions, 302 flow [2024-06-14 11:27:25,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:27:25,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:27:25,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 105 transitions. [2024-06-14 11:27:25,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26515151515151514 [2024-06-14 11:27:25,849 INFO L175 Difference]: Start difference. First operand has 86 places, 33 transitions, 174 flow. Second operand 12 states and 105 transitions. [2024-06-14 11:27:25,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 49 transitions, 302 flow [2024-06-14 11:27:25,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 49 transitions, 272 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-14 11:27:25,851 INFO L231 Difference]: Finished difference. Result has 75 places, 29 transitions, 145 flow [2024-06-14 11:27:25,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=145, PETRI_PLACES=75, PETRI_TRANSITIONS=29} [2024-06-14 11:27:25,851 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 43 predicate places. [2024-06-14 11:27:25,851 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 29 transitions, 145 flow [2024-06-14 11:27:25,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:27:25,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:27:25,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:27:25,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-14 11:27:25,852 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:27:25,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:27:25,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1338175614, now seen corresponding path program 31 times [2024-06-14 11:27:25,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:27:25,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474126803] [2024-06-14 11:27:25,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:27:25,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:27:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:27:27,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:27:27,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:27:27,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474126803] [2024-06-14 11:27:27,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474126803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:27:27,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:27:27,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:27:27,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101246090] [2024-06-14 11:27:27,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:27:27,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:27:27,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:27:27,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:27:27,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:27:28,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:27:28,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 29 transitions, 145 flow. Second operand has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:27:28,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:27:28,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:27:28,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:27:28,220 INFO L124 PetriNetUnfolderBase]: 64/146 cut-off events. [2024-06-14 11:27:28,220 INFO L125 PetriNetUnfolderBase]: For 1728/1728 co-relation queries the response was YES. [2024-06-14 11:27:28,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 146 events. 64/146 cut-off events. For 1728/1728 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 369 event pairs, 19 based on Foata normal form. 6/151 useless extension candidates. Maximal degree in co-relation 470. Up to 68 conditions per place. [2024-06-14 11:27:28,220 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 20 selfloop transitions, 6 changer transitions 17/45 dead transitions. [2024-06-14 11:27:28,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 45 transitions, 265 flow [2024-06-14 11:27:28,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:27:28,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:27:28,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 104 transitions. [2024-06-14 11:27:28,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26262626262626265 [2024-06-14 11:27:28,221 INFO L175 Difference]: Start difference. First operand has 75 places, 29 transitions, 145 flow. Second operand 12 states and 104 transitions. [2024-06-14 11:27:28,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 45 transitions, 265 flow [2024-06-14 11:27:28,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 45 transitions, 241 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 11:27:28,222 INFO L231 Difference]: Finished difference. Result has 69 places, 24 transitions, 114 flow [2024-06-14 11:27:28,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=114, PETRI_PLACES=69, PETRI_TRANSITIONS=24} [2024-06-14 11:27:28,223 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 37 predicate places. [2024-06-14 11:27:28,223 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 24 transitions, 114 flow [2024-06-14 11:27:28,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:27:28,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:27:28,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:27:28,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-14 11:27:28,223 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:27:28,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:27:28,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1448998134, now seen corresponding path program 32 times [2024-06-14 11:27:28,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:27:28,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631185874] [2024-06-14 11:27:28,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:27:28,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:27:28,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:27:30,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:27:30,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:27:30,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631185874] [2024-06-14 11:27:30,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631185874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:27:30,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:27:30,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-14 11:27:30,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80918791] [2024-06-14 11:27:30,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:27:30,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-14 11:27:30,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:27:30,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-14 11:27:30,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-14 11:27:30,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:27:30,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 24 transitions, 114 flow. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:27:30,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:27:30,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:27:30,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:27:30,700 INFO L124 PetriNetUnfolderBase]: 31/79 cut-off events. [2024-06-14 11:27:30,700 INFO L125 PetriNetUnfolderBase]: For 592/592 co-relation queries the response was YES. [2024-06-14 11:27:30,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 79 events. 31/79 cut-off events. For 592/592 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 117 event pairs, 0 based on Foata normal form. 6/84 useless extension candidates. Maximal degree in co-relation 202. Up to 24 conditions per place. [2024-06-14 11:27:30,701 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 0 selfloop transitions, 0 changer transitions 35/35 dead transitions. [2024-06-14 11:27:30,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 35 transitions, 174 flow [2024-06-14 11:27:30,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:27:30,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:27:30,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 94 transitions. [2024-06-14 11:27:30,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.23737373737373738 [2024-06-14 11:27:30,701 INFO L175 Difference]: Start difference. First operand has 69 places, 24 transitions, 114 flow. Second operand 12 states and 94 transitions. [2024-06-14 11:27:30,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 35 transitions, 174 flow [2024-06-14 11:27:30,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 35 transitions, 142 flow, removed 1 selfloop flow, removed 16 redundant places. [2024-06-14 11:27:30,702 INFO L231 Difference]: Finished difference. Result has 54 places, 0 transitions, 0 flow [2024-06-14 11:27:30,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=54, PETRI_TRANSITIONS=0} [2024-06-14 11:27:30,702 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 22 predicate places. [2024-06-14 11:27:30,702 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 0 transitions, 0 flow [2024-06-14 11:27:30,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:27:30,704 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-14 11:27:30,705 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-14 11:27:30,709 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-14 11:27:30,709 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-14 11:27:30,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-14 11:27:30,710 INFO L445 BasicCegarLoop]: Path program histogram: [34, 32, 24, 20, 18, 15, 11, 10, 6, 6, 5, 5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:27:30,713 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-14 11:27:30,713 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-14 11:27:30,717 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-14 11:27:30,717 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-14 11:27:30,718 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.06 11:27:30 BasicIcfg [2024-06-14 11:27:30,719 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-14 11:27:30,719 INFO L158 Benchmark]: Toolchain (without parser) took 538918.82ms. Allocated memory was 136.3MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 106.5MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 366.4MB. Max. memory is 16.1GB. [2024-06-14 11:27:30,721 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 136.3MB. Free memory is still 89.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 11:27:30,722 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 136.3MB. Free memory is still 64.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 11:27:30,722 INFO L158 Benchmark]: CACSL2BoogieTranslator took 748.85ms. Allocated memory was 136.3MB in the beginning and 197.1MB in the end (delta: 60.8MB). Free memory was 106.3MB in the beginning and 132.8MB in the end (delta: -26.5MB). Peak memory consumption was 40.4MB. Max. memory is 16.1GB. [2024-06-14 11:27:30,723 INFO L158 Benchmark]: Boogie Procedure Inliner took 87.51ms. Allocated memory is still 197.1MB. Free memory was 132.8MB in the beginning and 129.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 11:27:30,723 INFO L158 Benchmark]: Boogie Preprocessor took 103.85ms. Allocated memory is still 197.1MB. Free memory was 129.7MB in the beginning and 124.4MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-14 11:27:30,723 INFO L158 Benchmark]: RCFGBuilder took 792.23ms. Allocated memory is still 197.1MB. Free memory was 124.4MB in the beginning and 141.6MB in the end (delta: -17.2MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2024-06-14 11:27:30,723 INFO L158 Benchmark]: TraceAbstraction took 537180.66ms. Allocated memory was 197.1MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 141.6MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 341.0MB. Max. memory is 16.1GB. [2024-06-14 11:27:30,724 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 136.3MB. Free memory is still 89.8MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.14ms. Allocated memory is still 136.3MB. Free memory is still 64.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 748.85ms. Allocated memory was 136.3MB in the beginning and 197.1MB in the end (delta: 60.8MB). Free memory was 106.3MB in the beginning and 132.8MB in the end (delta: -26.5MB). Peak memory consumption was 40.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 87.51ms. Allocated memory is still 197.1MB. Free memory was 132.8MB in the beginning and 129.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 103.85ms. Allocated memory is still 197.1MB. Free memory was 129.7MB in the beginning and 124.4MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 792.23ms. Allocated memory is still 197.1MB. Free memory was 124.4MB in the beginning and 141.6MB in the end (delta: -17.2MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * TraceAbstraction took 537180.66ms. Allocated memory was 197.1MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 141.6MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 341.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 839]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 840]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 53 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 537.1s, OverallIterations: 218, TraceHistogramMax: 1, PathProgramHistogramMax: 34, EmptinessCheckTime: 0.0s, AutomataDifference: 190.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12622 SdHoareTripleChecker+Valid, 72.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10978 mSDsluCounter, 7287 SdHoareTripleChecker+Invalid, 62.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6629 mSDsCounter, 5129 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 108435 IncrementalHoareTripleChecker+Invalid, 113564 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5129 mSolverCounterUnsat, 658 mSDtfsCounter, 108435 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2860 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 2805 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8275 ImplicationChecksByTransitivity, 85.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2508occurred in iteration=117, InterpolantAutomatonStates: 2218, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 3.0s SatisfiabilityAnalysisTime, 341.7s InterpolantComputationTime, 4018 NumberOfCodeBlocks, 4018 NumberOfCodeBlocksAsserted, 218 NumberOfCheckSat, 3800 ConstructedInterpolants, 0 QuantifiedInterpolants, 170365 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 218 InterpolantComputations, 218 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-14 11:27:30,796 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE