./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix016_power.opt_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix016_power.opt_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix016_power.opt_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/protection/mix016_power.opt_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 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 18:19:51,633 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:19:51,722 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:19:51,727 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:19:51,727 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:19:51,752 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:19:51,753 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:19:51,753 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:19:51,754 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:19:51,757 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:19:51,758 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:19:51,758 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:19:51,759 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:19:51,760 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:19:51,760 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:19:51,760 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:19:51,760 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:19:51,761 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:19:51,761 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:19:51,761 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:19:51,761 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:19:51,762 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:19:51,762 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:19:51,762 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:19:51,762 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:19:51,763 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:19:51,763 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:19:51,763 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:19:51,764 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:19:51,764 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:19:51,765 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:19:51,765 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:19:51,765 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:19:51,765 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:19:51,766 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:19:51,766 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:19:51,766 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:19:51,766 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:19:51,766 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:19:51,767 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:19:51,767 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:19:51,767 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:19:51,767 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:19:51,768 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:19:51,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:19:52,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:19:52,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:19:52,011 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:19:52,011 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:19:52,012 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix016_power.opt_rmo.opt.yml/witness.yml [2024-06-27 18:19:52,150 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:19:52,150 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:19:52,151 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix016_power.opt_rmo.opt.i [2024-06-27 18:19:53,406 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:19:53,632 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:19:53,633 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix016_power.opt_rmo.opt.i [2024-06-27 18:19:53,646 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0301f7cb/dcec058d90524d9ca7cb43d13faabad0/FLAGeff00cbe5 [2024-06-27 18:19:53,656 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0301f7cb/dcec058d90524d9ca7cb43d13faabad0 [2024-06-27 18:19:53,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:19:53,658 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:19:53,658 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:19:53,659 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:19:53,662 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:19:53,663 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:19:52" (1/2) ... [2024-06-27 18:19:53,664 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68002611 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:19:53, skipping insertion in model container [2024-06-27 18:19:53,665 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:19:52" (1/2) ... [2024-06-27 18:19:53,667 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5daa9070 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:19:53, skipping insertion in model container [2024-06-27 18:19:53,668 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:19:53" (2/2) ... [2024-06-27 18:19:53,668 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68002611 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:19:53, skipping insertion in model container [2024-06-27 18:19:53,669 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:19:53" (2/2) ... [2024-06-27 18:19:53,670 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:19:53,742 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:19:53,743 INFO L97 edCorrectnessWitness]: Location invariant before [L839-L839] (((((((((((((((((((! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0) [2024-06-27 18:19:53,743 INFO L97 edCorrectnessWitness]: Location invariant before [L842-L842] (((((((((((((((((((! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0) [2024-06-27 18:19:53,743 INFO L97 edCorrectnessWitness]: Location invariant before [L841-L841] (((((((((((((((((((! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0) [2024-06-27 18:19:53,744 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:19:53,744 INFO L106 edCorrectnessWitness]: ghost_update [L837-L837] multithreaded = 1; [2024-06-27 18:19:53,782 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:19:53,939 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix016_power.opt_rmo.opt.i[1001,1014] [2024-06-27 18:19:54,155 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:19:54,165 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:19:54,196 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix016_power.opt_rmo.opt.i[1001,1014] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:19:54,368 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:19:54,406 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:19:54,406 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:19:54 WrapperNode [2024-06-27 18:19:54,406 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:19:54,407 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:19:54,407 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:19:54,408 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:19:54,413 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:19:54" (1/1) ... [2024-06-27 18:19:54,426 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:19:54" (1/1) ... [2024-06-27 18:19:54,457 INFO L138 Inliner]: procedures = 175, calls = 44, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 123 [2024-06-27 18:19:54,457 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:19:54,458 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:19:54,458 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:19:54,458 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:19:54,467 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:19:54" (1/1) ... [2024-06-27 18:19:54,467 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:19:54" (1/1) ... [2024-06-27 18:19:54,470 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:19:54" (1/1) ... [2024-06-27 18:19:54,489 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]. [2024-06-27 18:19:54,490 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:19:54" (1/1) ... [2024-06-27 18:19:54,490 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:19:54" (1/1) ... [2024-06-27 18:19:54,497 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:19:54" (1/1) ... [2024-06-27 18:19:54,499 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:19:54" (1/1) ... [2024-06-27 18:19:54,500 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:19:54" (1/1) ... [2024-06-27 18:19:54,501 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:19:54" (1/1) ... [2024-06-27 18:19:54,504 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:19:54,505 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:19:54,505 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:19:54,505 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:19:54,506 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:19:54" (1/1) ... [2024-06-27 18:19:54,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:19:54,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:19:54,557 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) [2024-06-27 18:19:54,579 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 [2024-06-27 18:19:54,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:19:54,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:19:54,597 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:19:54,597 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:19:54,597 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:19:54,597 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:19:54,598 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:19:54,598 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:19:54,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:19:54,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:19:54,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:19:54,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:19:54,600 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 18:19:54,734 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:19:54,737 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:19:55,014 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:19:55,014 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:19:55,167 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:19:55,167 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:19:55,167 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:19:55 BoogieIcfgContainer [2024-06-27 18:19:55,168 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:19:55,170 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:19:55,170 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:19:55,173 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:19:55,174 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:19:52" (1/4) ... [2024-06-27 18:19:55,174 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29e2f84a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:19:55, skipping insertion in model container [2024-06-27 18:19:55,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:19:53" (2/4) ... [2024-06-27 18:19:55,175 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29e2f84a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:19:55, skipping insertion in model container [2024-06-27 18:19:55,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:19:54" (3/4) ... [2024-06-27 18:19:55,176 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29e2f84a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:19:55, skipping insertion in model container [2024-06-27 18:19:55,176 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:19:55" (4/4) ... [2024-06-27 18:19:55,177 INFO L112 eAbstractionObserver]: Analyzing ICFG mix016_power.opt_rmo.opt.i [2024-06-27 18:19:55,191 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:19:55,191 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 18:19:55,191 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:19:55,238 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:19:55,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 106 flow [2024-06-27 18:19:55,302 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-06-27 18:19:55,303 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:19:55,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 72 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-06-27 18:19:55,307 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 106 flow [2024-06-27 18:19:55,311 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 44 transitions, 97 flow [2024-06-27 18:19:55,324 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:19:55,331 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;@2f43dc12, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:19:55,331 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 18:19:55,338 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:19:55,338 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:19:55,338 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:19:55,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:55,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:19:55,340 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:55,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:55,359 INFO L85 PathProgramCache]: Analyzing trace with hash 348228607, now seen corresponding path program 1 times [2024-06-27 18:19:55,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:55,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421800609] [2024-06-27 18:19:55,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:55,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:55,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:56,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:56,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:56,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421800609] [2024-06-27 18:19:56,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421800609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:56,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:56,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:19:56,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315437234] [2024-06-27 18:19:56,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:56,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:19:56,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:56,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:19:56,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:19:56,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-06-27 18:19:56,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:56,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:56,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-06-27 18:19:56,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:56,901 INFO L124 PetriNetUnfolderBase]: 2610/4460 cut-off events. [2024-06-27 18:19:56,902 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-06-27 18:19:56,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8335 conditions, 4460 events. 2610/4460 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 29249 event pairs, 2067 based on Foata normal form. 121/4132 useless extension candidates. Maximal degree in co-relation 8323. Up to 3786 conditions per place. [2024-06-27 18:19:56,928 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 39 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-06-27 18:19:56,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 58 transitions, 219 flow [2024-06-27 18:19:56,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:19:56,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:19:56,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2024-06-27 18:19:56,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7092198581560284 [2024-06-27 18:19:56,941 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 97 flow. Second operand 3 states and 100 transitions. [2024-06-27 18:19:56,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 58 transitions, 219 flow [2024-06-27 18:19:56,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 58 transitions, 214 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 18:19:56,953 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 129 flow [2024-06-27 18:19:56,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-06-27 18:19:56,959 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-06-27 18:19:56,959 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 129 flow [2024-06-27 18:19:56,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:56,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:56,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:56,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:19:56,960 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:56,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:56,961 INFO L85 PathProgramCache]: Analyzing trace with hash -359107726, now seen corresponding path program 1 times [2024-06-27 18:19:56,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:56,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937074687] [2024-06-27 18:19:56,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:56,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:57,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:57,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:57,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937074687] [2024-06-27 18:19:57,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937074687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:57,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:57,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:19:57,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677473094] [2024-06-27 18:19:57,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:57,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:19:57,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:57,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:19:57,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:19:57,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-06-27 18:19:57,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:57,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:57,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-06-27 18:19:57,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:58,025 INFO L124 PetriNetUnfolderBase]: 3117/4728 cut-off events. [2024-06-27 18:19:58,025 INFO L125 PetriNetUnfolderBase]: For 658/658 co-relation queries the response was YES. [2024-06-27 18:19:58,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10488 conditions, 4728 events. 3117/4728 cut-off events. For 658/658 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 27297 event pairs, 1118 based on Foata normal form. 6/4505 useless extension candidates. Maximal degree in co-relation 10476. Up to 4451 conditions per place. [2024-06-27 18:19:58,046 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 52 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2024-06-27 18:19:58,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 74 transitions, 319 flow [2024-06-27 18:19:58,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:19:58,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:19:58,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2024-06-27 18:19:58,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6808510638297872 [2024-06-27 18:19:58,049 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 129 flow. Second operand 4 states and 128 transitions. [2024-06-27 18:19:58,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 74 transitions, 319 flow [2024-06-27 18:19:58,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 74 transitions, 314 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:19:58,050 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 175 flow [2024-06-27 18:19:58,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=175, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-06-27 18:19:58,051 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2024-06-27 18:19:58,051 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 175 flow [2024-06-27 18:19:58,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:58,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:58,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:58,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:19:58,052 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:58,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:58,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1732804912, now seen corresponding path program 1 times [2024-06-27 18:19:58,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:58,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678994429] [2024-06-27 18:19:58,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:58,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:58,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:58,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:58,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:58,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678994429] [2024-06-27 18:19:58,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678994429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:58,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:58,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:19:58,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842110708] [2024-06-27 18:19:58,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:58,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:19:58,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:58,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:19:58,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:19:58,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2024-06-27 18:19:58,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 175 flow. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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) [2024-06-27 18:19:58,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:58,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2024-06-27 18:19:58,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:58,284 INFO L124 PetriNetUnfolderBase]: 833/1766 cut-off events. [2024-06-27 18:19:58,285 INFO L125 PetriNetUnfolderBase]: For 456/528 co-relation queries the response was YES. [2024-06-27 18:19:58,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3605 conditions, 1766 events. 833/1766 cut-off events. For 456/528 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 12413 event pairs, 207 based on Foata normal form. 7/1650 useless extension candidates. Maximal degree in co-relation 3591. Up to 1044 conditions per place. [2024-06-27 18:19:58,295 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 30 selfloop transitions, 4 changer transitions 0/60 dead transitions. [2024-06-27 18:19:58,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 60 transitions, 250 flow [2024-06-27 18:19:58,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:19:58,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:19:58,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2024-06-27 18:19:58,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7659574468085106 [2024-06-27 18:19:58,296 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 175 flow. Second operand 3 states and 108 transitions. [2024-06-27 18:19:58,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 60 transitions, 250 flow [2024-06-27 18:19:58,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 60 transitions, 236 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 18:19:58,299 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 150 flow [2024-06-27 18:19:58,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2024-06-27 18:19:58,299 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 2 predicate places. [2024-06-27 18:19:58,299 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 150 flow [2024-06-27 18:19:58,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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) [2024-06-27 18:19:58,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:58,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:58,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:19:58,300 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:58,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:58,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1244499225, now seen corresponding path program 1 times [2024-06-27 18:19:58,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:58,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732575981] [2024-06-27 18:19:58,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:58,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:58,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:59,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:59,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:59,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732575981] [2024-06-27 18:19:59,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732575981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:59,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:59,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:19:59,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012187435] [2024-06-27 18:19:59,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:59,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:19:59,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:59,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:19:59,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:19:59,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-06-27 18:19:59,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 150 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:59,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:59,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-06-27 18:19:59,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:00,169 INFO L124 PetriNetUnfolderBase]: 2555/4210 cut-off events. [2024-06-27 18:20:00,170 INFO L125 PetriNetUnfolderBase]: For 2242/2242 co-relation queries the response was YES. [2024-06-27 18:20:00,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9749 conditions, 4210 events. 2555/4210 cut-off events. For 2242/2242 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 25573 event pairs, 891 based on Foata normal form. 6/4095 useless extension candidates. Maximal degree in co-relation 9735. Up to 3607 conditions per place. [2024-06-27 18:20:00,193 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 64 selfloop transitions, 12 changer transitions 5/94 dead transitions. [2024-06-27 18:20:00,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 94 transitions, 430 flow [2024-06-27 18:20:00,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:20:00,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:20:00,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2024-06-27 18:20:00,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2024-06-27 18:20:00,195 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 150 flow. Second operand 6 states and 180 transitions. [2024-06-27 18:20:00,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 94 transitions, 430 flow [2024-06-27 18:20:00,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 94 transitions, 418 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:20:00,199 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 197 flow [2024-06-27 18:20:00,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=197, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2024-06-27 18:20:00,200 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 6 predicate places. [2024-06-27 18:20:00,200 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 197 flow [2024-06-27 18:20:00,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:00,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:00,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:00,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:20:00,201 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:00,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:00,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1222137708, now seen corresponding path program 1 times [2024-06-27 18:20:00,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:00,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135826459] [2024-06-27 18:20:00,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:00,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:00,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:00,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:00,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:00,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135826459] [2024-06-27 18:20:00,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135826459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:00,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:00,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:20:00,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599340780] [2024-06-27 18:20:00,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:00,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:20:00,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:00,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:20:00,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:20:01,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-06-27 18:20:01,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 197 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:01,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:01,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-06-27 18:20:01,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:01,535 INFO L124 PetriNetUnfolderBase]: 2125/3796 cut-off events. [2024-06-27 18:20:01,535 INFO L125 PetriNetUnfolderBase]: For 2854/2854 co-relation queries the response was YES. [2024-06-27 18:20:01,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9092 conditions, 3796 events. 2125/3796 cut-off events. For 2854/2854 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 24526 event pairs, 937 based on Foata normal form. 2/3665 useless extension candidates. Maximal degree in co-relation 9075. Up to 3081 conditions per place. [2024-06-27 18:20:01,559 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 54 selfloop transitions, 9 changer transitions 0/75 dead transitions. [2024-06-27 18:20:01,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 75 transitions, 400 flow [2024-06-27 18:20:01,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:20:01,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:20:01,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-06-27 18:20:01,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.548936170212766 [2024-06-27 18:20:01,561 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 197 flow. Second operand 5 states and 129 transitions. [2024-06-27 18:20:01,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 75 transitions, 400 flow [2024-06-27 18:20:01,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 75 transitions, 367 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 18:20:01,569 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 246 flow [2024-06-27 18:20:01,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=246, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2024-06-27 18:20:01,572 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 8 predicate places. [2024-06-27 18:20:01,575 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 246 flow [2024-06-27 18:20:01,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:01,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:01,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:01,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:20:01,576 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:01,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:01,577 INFO L85 PathProgramCache]: Analyzing trace with hash 840050873, now seen corresponding path program 1 times [2024-06-27 18:20:01,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:01,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715421290] [2024-06-27 18:20:01,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:01,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:01,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:02,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:02,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:02,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715421290] [2024-06-27 18:20:02,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715421290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:02,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:02,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:20:02,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540644054] [2024-06-27 18:20:02,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:02,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:20:02,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:02,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:20:02,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:20:02,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:20:02,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 246 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:02,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:02,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:20:02,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:03,075 INFO L124 PetriNetUnfolderBase]: 2601/4443 cut-off events. [2024-06-27 18:20:03,075 INFO L125 PetriNetUnfolderBase]: For 4959/4959 co-relation queries the response was YES. [2024-06-27 18:20:03,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11615 conditions, 4443 events. 2601/4443 cut-off events. For 4959/4959 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 28176 event pairs, 1118 based on Foata normal form. 4/4319 useless extension candidates. Maximal degree in co-relation 11595. Up to 3714 conditions per place. [2024-06-27 18:20:03,187 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 68 selfloop transitions, 13 changer transitions 0/92 dead transitions. [2024-06-27 18:20:03,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 92 transitions, 513 flow [2024-06-27 18:20:03,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:20:03,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:20:03,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-06-27 18:20:03,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5425531914893617 [2024-06-27 18:20:03,189 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 246 flow. Second operand 6 states and 153 transitions. [2024-06-27 18:20:03,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 92 transitions, 513 flow [2024-06-27 18:20:03,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 92 transitions, 496 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 18:20:03,194 INFO L231 Difference]: Finished difference. Result has 66 places, 65 transitions, 319 flow [2024-06-27 18:20:03,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=319, PETRI_PLACES=66, PETRI_TRANSITIONS=65} [2024-06-27 18:20:03,195 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 13 predicate places. [2024-06-27 18:20:03,195 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 65 transitions, 319 flow [2024-06-27 18:20:03,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:03,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:03,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:03,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:20:03,196 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:03,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:03,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1615757285, now seen corresponding path program 2 times [2024-06-27 18:20:03,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:03,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157141443] [2024-06-27 18:20:03,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:03,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:03,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:03,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:03,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:03,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157141443] [2024-06-27 18:20:03,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157141443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:03,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:03,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:20:03,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352439890] [2024-06-27 18:20:03,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:03,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:20:03,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:03,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:20:03,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:20:03,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:20:03,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 65 transitions, 319 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:03,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:03,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:20:03,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:04,549 INFO L124 PetriNetUnfolderBase]: 2624/4472 cut-off events. [2024-06-27 18:20:04,550 INFO L125 PetriNetUnfolderBase]: For 7558/7570 co-relation queries the response was YES. [2024-06-27 18:20:04,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12716 conditions, 4472 events. 2624/4472 cut-off events. For 7558/7570 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 28104 event pairs, 1067 based on Foata normal form. 12/4354 useless extension candidates. Maximal degree in co-relation 12693. Up to 3697 conditions per place. [2024-06-27 18:20:04,571 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 66 selfloop transitions, 18 changer transitions 0/95 dead transitions. [2024-06-27 18:20:04,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 95 transitions, 585 flow [2024-06-27 18:20:04,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:20:04,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:20:04,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-06-27 18:20:04,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5460992907801419 [2024-06-27 18:20:04,573 INFO L175 Difference]: Start difference. First operand has 66 places, 65 transitions, 319 flow. Second operand 6 states and 154 transitions. [2024-06-27 18:20:04,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 95 transitions, 585 flow [2024-06-27 18:20:04,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 95 transitions, 554 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 18:20:04,578 INFO L231 Difference]: Finished difference. Result has 69 places, 68 transitions, 362 flow [2024-06-27 18:20:04,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=362, PETRI_PLACES=69, PETRI_TRANSITIONS=68} [2024-06-27 18:20:04,579 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 16 predicate places. [2024-06-27 18:20:04,580 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 68 transitions, 362 flow [2024-06-27 18:20:04,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:04,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:04,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:04,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:20:04,580 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:04,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:04,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1948215917, now seen corresponding path program 1 times [2024-06-27 18:20:04,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:04,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519154688] [2024-06-27 18:20:04,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:04,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:04,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:05,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:05,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:05,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519154688] [2024-06-27 18:20:05,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519154688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:05,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:05,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:20:05,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498577281] [2024-06-27 18:20:05,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:05,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:20:05,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:05,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:20:05,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:20:05,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:20:05,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 68 transitions, 362 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:05,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:05,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:20:05,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:06,207 INFO L124 PetriNetUnfolderBase]: 2724/4711 cut-off events. [2024-06-27 18:20:06,208 INFO L125 PetriNetUnfolderBase]: For 10113/10113 co-relation queries the response was YES. [2024-06-27 18:20:06,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14009 conditions, 4711 events. 2724/4711 cut-off events. For 10113/10113 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 30272 event pairs, 1064 based on Foata normal form. 2/4573 useless extension candidates. Maximal degree in co-relation 13985. Up to 3883 conditions per place. [2024-06-27 18:20:06,242 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 80 selfloop transitions, 22 changer transitions 0/113 dead transitions. [2024-06-27 18:20:06,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 113 transitions, 741 flow [2024-06-27 18:20:06,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:20:06,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:20:06,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-27 18:20:06,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5349544072948328 [2024-06-27 18:20:06,246 INFO L175 Difference]: Start difference. First operand has 69 places, 68 transitions, 362 flow. Second operand 7 states and 176 transitions. [2024-06-27 18:20:06,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 113 transitions, 741 flow [2024-06-27 18:20:06,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 113 transitions, 688 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 18:20:06,255 INFO L231 Difference]: Finished difference. Result has 74 places, 79 transitions, 471 flow [2024-06-27 18:20:06,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=471, PETRI_PLACES=74, PETRI_TRANSITIONS=79} [2024-06-27 18:20:06,258 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 21 predicate places. [2024-06-27 18:20:06,258 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 79 transitions, 471 flow [2024-06-27 18:20:06,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:06,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:06,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:06,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:20:06,259 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:06,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:06,259 INFO L85 PathProgramCache]: Analyzing trace with hash 271653721, now seen corresponding path program 1 times [2024-06-27 18:20:06,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:06,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790129712] [2024-06-27 18:20:06,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:06,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:06,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:07,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:07,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:07,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790129712] [2024-06-27 18:20:07,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790129712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:07,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:07,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:20:07,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305059980] [2024-06-27 18:20:07,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:07,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:20:07,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:07,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:20:07,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:20:07,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:20:07,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 79 transitions, 471 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:07,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:07,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:20:07,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:08,274 INFO L124 PetriNetUnfolderBase]: 3080/5235 cut-off events. [2024-06-27 18:20:08,274 INFO L125 PetriNetUnfolderBase]: For 15350/15350 co-relation queries the response was YES. [2024-06-27 18:20:08,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16900 conditions, 5235 events. 3080/5235 cut-off events. For 15350/15350 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 33883 event pairs, 1180 based on Foata normal form. 2/5093 useless extension candidates. Maximal degree in co-relation 16873. Up to 4384 conditions per place. [2024-06-27 18:20:08,314 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 92 selfloop transitions, 17 changer transitions 0/121 dead transitions. [2024-06-27 18:20:08,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 121 transitions, 831 flow [2024-06-27 18:20:08,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:20:08,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:20:08,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-27 18:20:08,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5440729483282675 [2024-06-27 18:20:08,317 INFO L175 Difference]: Start difference. First operand has 74 places, 79 transitions, 471 flow. Second operand 7 states and 179 transitions. [2024-06-27 18:20:08,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 121 transitions, 831 flow [2024-06-27 18:20:08,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 121 transitions, 778 flow, removed 22 selfloop flow, removed 2 redundant places. [2024-06-27 18:20:08,329 INFO L231 Difference]: Finished difference. Result has 80 places, 86 transitions, 533 flow [2024-06-27 18:20:08,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=533, PETRI_PLACES=80, PETRI_TRANSITIONS=86} [2024-06-27 18:20:08,331 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 27 predicate places. [2024-06-27 18:20:08,331 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 86 transitions, 533 flow [2024-06-27 18:20:08,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:08,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:08,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:08,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:20:08,332 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:08,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:08,332 INFO L85 PathProgramCache]: Analyzing trace with hash -265149670, now seen corresponding path program 1 times [2024-06-27 18:20:08,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:08,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511298114] [2024-06-27 18:20:08,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:08,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:08,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:09,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:09,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:09,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511298114] [2024-06-27 18:20:09,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511298114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:09,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:09,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:20:09,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60592335] [2024-06-27 18:20:09,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:09,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:20:09,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:09,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:20:09,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:20:09,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:20:09,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 86 transitions, 533 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:09,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:09,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:20:09,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:10,577 INFO L124 PetriNetUnfolderBase]: 2729/4755 cut-off events. [2024-06-27 18:20:10,577 INFO L125 PetriNetUnfolderBase]: For 16551/16551 co-relation queries the response was YES. [2024-06-27 18:20:10,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15844 conditions, 4755 events. 2729/4755 cut-off events. For 16551/16551 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 30875 event pairs, 1016 based on Foata normal form. 4/4596 useless extension candidates. Maximal degree in co-relation 15814. Up to 3866 conditions per place. [2024-06-27 18:20:10,620 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 106 selfloop transitions, 17 changer transitions 0/134 dead transitions. [2024-06-27 18:20:10,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 134 transitions, 946 flow [2024-06-27 18:20:10,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:20:10,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:20:10,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-27 18:20:10,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-27 18:20:10,622 INFO L175 Difference]: Start difference. First operand has 80 places, 86 transitions, 533 flow. Second operand 8 states and 200 transitions. [2024-06-27 18:20:10,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 134 transitions, 946 flow [2024-06-27 18:20:10,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 134 transitions, 889 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-27 18:20:10,636 INFO L231 Difference]: Finished difference. Result has 86 places, 92 transitions, 584 flow [2024-06-27 18:20:10,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=584, PETRI_PLACES=86, PETRI_TRANSITIONS=92} [2024-06-27 18:20:10,637 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 33 predicate places. [2024-06-27 18:20:10,637 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 92 transitions, 584 flow [2024-06-27 18:20:10,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:10,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:10,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:10,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:20:10,638 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:10,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:10,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1283283899, now seen corresponding path program 1 times [2024-06-27 18:20:10,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:10,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785333099] [2024-06-27 18:20:10,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:10,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:10,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:11,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:11,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:11,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785333099] [2024-06-27 18:20:11,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785333099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:11,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:11,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:20:11,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880889319] [2024-06-27 18:20:11,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:11,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:20:11,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:11,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:20:11,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:20:11,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:20:11,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 92 transitions, 584 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:11,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:11,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:20:11,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:12,031 INFO L124 PetriNetUnfolderBase]: 3249/5491 cut-off events. [2024-06-27 18:20:12,031 INFO L125 PetriNetUnfolderBase]: For 22132/22132 co-relation queries the response was YES. [2024-06-27 18:20:12,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18778 conditions, 5491 events. 3249/5491 cut-off events. For 22132/22132 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 35210 event pairs, 1312 based on Foata normal form. 1/5334 useless extension candidates. Maximal degree in co-relation 18745. Up to 4665 conditions per place. [2024-06-27 18:20:12,077 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 89 selfloop transitions, 11 changer transitions 0/110 dead transitions. [2024-06-27 18:20:12,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 110 transitions, 844 flow [2024-06-27 18:20:12,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:20:12,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:20:12,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-06-27 18:20:12,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.502127659574468 [2024-06-27 18:20:12,079 INFO L175 Difference]: Start difference. First operand has 86 places, 92 transitions, 584 flow. Second operand 5 states and 118 transitions. [2024-06-27 18:20:12,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 110 transitions, 844 flow [2024-06-27 18:20:12,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 110 transitions, 797 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-27 18:20:12,097 INFO L231 Difference]: Finished difference. Result has 87 places, 95 transitions, 592 flow [2024-06-27 18:20:12,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=592, PETRI_PLACES=87, PETRI_TRANSITIONS=95} [2024-06-27 18:20:12,098 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 34 predicate places. [2024-06-27 18:20:12,098 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 95 transitions, 592 flow [2024-06-27 18:20:12,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:12,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:12,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:12,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:20:12,099 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:12,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:12,100 INFO L85 PathProgramCache]: Analyzing trace with hash -164913032, now seen corresponding path program 1 times [2024-06-27 18:20:12,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:12,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092573148] [2024-06-27 18:20:12,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:12,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:12,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:13,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:13,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:13,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092573148] [2024-06-27 18:20:13,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092573148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:13,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:13,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:20:13,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250774793] [2024-06-27 18:20:13,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:13,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:20:13,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:13,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:20:13,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:20:13,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:20:13,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 95 transitions, 592 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:13,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:13,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:20:13,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:14,274 INFO L124 PetriNetUnfolderBase]: 3542/5863 cut-off events. [2024-06-27 18:20:14,274 INFO L125 PetriNetUnfolderBase]: For 28308/28308 co-relation queries the response was YES. [2024-06-27 18:20:14,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21097 conditions, 5863 events. 3542/5863 cut-off events. For 28308/28308 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 37220 event pairs, 1305 based on Foata normal form. 4/5692 useless extension candidates. Maximal degree in co-relation 21063. Up to 4920 conditions per place. [2024-06-27 18:20:14,310 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 115 selfloop transitions, 20 changer transitions 0/146 dead transitions. [2024-06-27 18:20:14,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 146 transitions, 1036 flow [2024-06-27 18:20:14,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:20:14,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:20:14,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-27 18:20:14,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526595744680851 [2024-06-27 18:20:14,313 INFO L175 Difference]: Start difference. First operand has 87 places, 95 transitions, 592 flow. Second operand 8 states and 198 transitions. [2024-06-27 18:20:14,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 146 transitions, 1036 flow [2024-06-27 18:20:14,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 146 transitions, 1005 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 18:20:14,330 INFO L231 Difference]: Finished difference. Result has 93 places, 102 transitions, 674 flow [2024-06-27 18:20:14,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=674, PETRI_PLACES=93, PETRI_TRANSITIONS=102} [2024-06-27 18:20:14,330 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 40 predicate places. [2024-06-27 18:20:14,330 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 102 transitions, 674 flow [2024-06-27 18:20:14,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:14,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:14,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:14,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:20:14,331 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:14,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:14,332 INFO L85 PathProgramCache]: Analyzing trace with hash 361714674, now seen corresponding path program 2 times [2024-06-27 18:20:14,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:14,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178592919] [2024-06-27 18:20:14,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:14,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:14,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:15,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:15,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:15,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178592919] [2024-06-27 18:20:15,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178592919] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:15,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:15,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:20:15,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138439603] [2024-06-27 18:20:15,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:15,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:20:15,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:15,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:20:15,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:20:15,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:20:15,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 102 transitions, 674 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:15,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:15,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:20:15,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:16,432 INFO L124 PetriNetUnfolderBase]: 3606/5924 cut-off events. [2024-06-27 18:20:16,433 INFO L125 PetriNetUnfolderBase]: For 34481/34499 co-relation queries the response was YES. [2024-06-27 18:20:16,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23049 conditions, 5924 events. 3606/5924 cut-off events. For 34481/34499 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 37148 event pairs, 1248 based on Foata normal form. 16/5770 useless extension candidates. Maximal degree in co-relation 23013. Up to 4867 conditions per place. [2024-06-27 18:20:16,480 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 113 selfloop transitions, 30 changer transitions 0/154 dead transitions. [2024-06-27 18:20:16,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 154 transitions, 1160 flow [2024-06-27 18:20:16,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:20:16,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:20:16,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-27 18:20:16,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5345744680851063 [2024-06-27 18:20:16,482 INFO L175 Difference]: Start difference. First operand has 93 places, 102 transitions, 674 flow. Second operand 8 states and 201 transitions. [2024-06-27 18:20:16,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 154 transitions, 1160 flow [2024-06-27 18:20:16,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 154 transitions, 1095 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-27 18:20:16,509 INFO L231 Difference]: Finished difference. Result has 97 places, 110 transitions, 758 flow [2024-06-27 18:20:16,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=758, PETRI_PLACES=97, PETRI_TRANSITIONS=110} [2024-06-27 18:20:16,509 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 44 predicate places. [2024-06-27 18:20:16,510 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 110 transitions, 758 flow [2024-06-27 18:20:16,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:16,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:16,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:16,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:20:16,511 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:16,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:16,511 INFO L85 PathProgramCache]: Analyzing trace with hash 369988884, now seen corresponding path program 3 times [2024-06-27 18:20:16,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:16,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868466504] [2024-06-27 18:20:16,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:16,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:16,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:17,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:17,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:17,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868466504] [2024-06-27 18:20:17,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868466504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:17,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:17,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:20:17,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437978225] [2024-06-27 18:20:17,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:17,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:20:17,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:17,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:20:17,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:20:17,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:20:17,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 110 transitions, 758 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:17,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:17,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:20:17,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:18,630 INFO L124 PetriNetUnfolderBase]: 3652/5981 cut-off events. [2024-06-27 18:20:18,630 INFO L125 PetriNetUnfolderBase]: For 41590/41608 co-relation queries the response was YES. [2024-06-27 18:20:18,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24900 conditions, 5981 events. 3652/5981 cut-off events. For 41590/41608 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 37298 event pairs, 1237 based on Foata normal form. 16/5826 useless extension candidates. Maximal degree in co-relation 24862. Up to 4931 conditions per place. [2024-06-27 18:20:18,682 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 116 selfloop transitions, 33 changer transitions 0/160 dead transitions. [2024-06-27 18:20:18,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 160 transitions, 1266 flow [2024-06-27 18:20:18,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:20:18,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:20:18,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-27 18:20:18,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-27 18:20:18,684 INFO L175 Difference]: Start difference. First operand has 97 places, 110 transitions, 758 flow. Second operand 8 states and 200 transitions. [2024-06-27 18:20:18,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 160 transitions, 1266 flow [2024-06-27 18:20:18,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 160 transitions, 1167 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-27 18:20:18,717 INFO L231 Difference]: Finished difference. Result has 100 places, 116 transitions, 810 flow [2024-06-27 18:20:18,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=663, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=810, PETRI_PLACES=100, PETRI_TRANSITIONS=116} [2024-06-27 18:20:18,718 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 47 predicate places. [2024-06-27 18:20:18,718 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 116 transitions, 810 flow [2024-06-27 18:20:18,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:18,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:18,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:18,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:20:18,719 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:18,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:18,719 INFO L85 PathProgramCache]: Analyzing trace with hash 370285554, now seen corresponding path program 4 times [2024-06-27 18:20:18,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:18,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2606747] [2024-06-27 18:20:18,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:18,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:18,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:19,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:19,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:19,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2606747] [2024-06-27 18:20:19,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2606747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:19,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:19,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:20:19,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362761641] [2024-06-27 18:20:19,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:19,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:20:19,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:19,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:20:19,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:20:19,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:20:19,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 116 transitions, 810 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:19,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:19,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:20:19,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:21,060 INFO L124 PetriNetUnfolderBase]: 3600/5697 cut-off events. [2024-06-27 18:20:21,061 INFO L125 PetriNetUnfolderBase]: For 47071/47089 co-relation queries the response was YES. [2024-06-27 18:20:21,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25422 conditions, 5697 events. 3600/5697 cut-off events. For 47071/47089 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 34337 event pairs, 1210 based on Foata normal form. 14/5600 useless extension candidates. Maximal degree in co-relation 25383. Up to 4749 conditions per place. [2024-06-27 18:20:21,110 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 113 selfloop transitions, 47 changer transitions 0/171 dead transitions. [2024-06-27 18:20:21,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 171 transitions, 1348 flow [2024-06-27 18:20:21,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:20:21,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:20:21,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-06-27 18:20:21,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5342789598108747 [2024-06-27 18:20:21,112 INFO L175 Difference]: Start difference. First operand has 100 places, 116 transitions, 810 flow. Second operand 9 states and 226 transitions. [2024-06-27 18:20:21,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 171 transitions, 1348 flow [2024-06-27 18:20:21,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 171 transitions, 1255 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-27 18:20:21,147 INFO L231 Difference]: Finished difference. Result has 105 places, 119 transitions, 876 flow [2024-06-27 18:20:21,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=876, PETRI_PLACES=105, PETRI_TRANSITIONS=119} [2024-06-27 18:20:21,148 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 52 predicate places. [2024-06-27 18:20:21,148 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 119 transitions, 876 flow [2024-06-27 18:20:21,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:21,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:21,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:21,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:20:21,149 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:21,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:21,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1127093798, now seen corresponding path program 1 times [2024-06-27 18:20:21,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:21,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793110738] [2024-06-27 18:20:21,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:21,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:21,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:21,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:21,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:21,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793110738] [2024-06-27 18:20:21,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793110738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:21,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:21,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:20:21,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855992127] [2024-06-27 18:20:21,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:21,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:20:21,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:21,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:20:21,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:20:21,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:20:21,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 119 transitions, 876 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:21,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:21,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:20:21,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:22,880 INFO L124 PetriNetUnfolderBase]: 3427/5503 cut-off events. [2024-06-27 18:20:22,881 INFO L125 PetriNetUnfolderBase]: For 46823/46823 co-relation queries the response was YES. [2024-06-27 18:20:22,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24822 conditions, 5503 events. 3427/5503 cut-off events. For 46823/46823 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 33441 event pairs, 1260 based on Foata normal form. 2/5413 useless extension candidates. Maximal degree in co-relation 24782. Up to 4891 conditions per place. [2024-06-27 18:20:22,923 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 119 selfloop transitions, 14 changer transitions 0/143 dead transitions. [2024-06-27 18:20:22,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 143 transitions, 1224 flow [2024-06-27 18:20:22,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:20:22,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:20:22,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-27 18:20:22,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49645390070921985 [2024-06-27 18:20:22,925 INFO L175 Difference]: Start difference. First operand has 105 places, 119 transitions, 876 flow. Second operand 6 states and 140 transitions. [2024-06-27 18:20:22,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 143 transitions, 1224 flow [2024-06-27 18:20:22,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 143 transitions, 1105 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-27 18:20:22,967 INFO L231 Difference]: Finished difference. Result has 104 places, 122 transitions, 821 flow [2024-06-27 18:20:22,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=757, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=821, PETRI_PLACES=104, PETRI_TRANSITIONS=122} [2024-06-27 18:20:22,968 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 51 predicate places. [2024-06-27 18:20:22,968 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 122 transitions, 821 flow [2024-06-27 18:20:22,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:22,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:22,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:22,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:20:22,969 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:22,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:22,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1102311522, now seen corresponding path program 1 times [2024-06-27 18:20:22,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:22,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535250412] [2024-06-27 18:20:22,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:22,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:22,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:24,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:24,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:24,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535250412] [2024-06-27 18:20:24,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535250412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:24,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:24,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:20:24,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731579027] [2024-06-27 18:20:24,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:24,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:20:24,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:24,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:20:24,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:20:24,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:20:24,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 122 transitions, 821 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:24,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:24,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:20:24,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:25,508 INFO L124 PetriNetUnfolderBase]: 3501/5689 cut-off events. [2024-06-27 18:20:25,508 INFO L125 PetriNetUnfolderBase]: For 55582/55622 co-relation queries the response was YES. [2024-06-27 18:20:25,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26486 conditions, 5689 events. 3501/5689 cut-off events. For 55582/55622 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 35803 event pairs, 917 based on Foata normal form. 8/5532 useless extension candidates. Maximal degree in co-relation 26445. Up to 4869 conditions per place. [2024-06-27 18:20:25,551 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 135 selfloop transitions, 19 changer transitions 0/170 dead transitions. [2024-06-27 18:20:25,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 170 transitions, 1293 flow [2024-06-27 18:20:25,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:20:25,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:20:25,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-27 18:20:25,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5398936170212766 [2024-06-27 18:20:25,553 INFO L175 Difference]: Start difference. First operand has 104 places, 122 transitions, 821 flow. Second operand 8 states and 203 transitions. [2024-06-27 18:20:25,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 170 transitions, 1293 flow [2024-06-27 18:20:25,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 170 transitions, 1251 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 18:20:25,586 INFO L231 Difference]: Finished difference. Result has 109 places, 127 transitions, 894 flow [2024-06-27 18:20:25,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=779, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=894, PETRI_PLACES=109, PETRI_TRANSITIONS=127} [2024-06-27 18:20:25,587 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 56 predicate places. [2024-06-27 18:20:25,587 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 127 transitions, 894 flow [2024-06-27 18:20:25,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:25,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:25,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:25,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:20:25,588 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:25,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:25,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1099424802, now seen corresponding path program 2 times [2024-06-27 18:20:25,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:25,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940082682] [2024-06-27 18:20:25,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:25,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:25,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:27,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:27,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:27,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940082682] [2024-06-27 18:20:27,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940082682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:27,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:27,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:20:27,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132564327] [2024-06-27 18:20:27,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:27,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:20:27,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:27,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:20:27,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:20:27,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:20:27,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 127 transitions, 894 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:27,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:27,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:20:27,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:28,239 INFO L124 PetriNetUnfolderBase]: 3499/5629 cut-off events. [2024-06-27 18:20:28,239 INFO L125 PetriNetUnfolderBase]: For 63122/63162 co-relation queries the response was YES. [2024-06-27 18:20:28,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27386 conditions, 5629 events. 3499/5629 cut-off events. For 63122/63162 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 35095 event pairs, 1106 based on Foata normal form. 8/5502 useless extension candidates. Maximal degree in co-relation 27343. Up to 4890 conditions per place. [2024-06-27 18:20:28,292 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 138 selfloop transitions, 19 changer transitions 0/173 dead transitions. [2024-06-27 18:20:28,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 173 transitions, 1372 flow [2024-06-27 18:20:28,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:20:28,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:20:28,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-27 18:20:28,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5425531914893617 [2024-06-27 18:20:28,294 INFO L175 Difference]: Start difference. First operand has 109 places, 127 transitions, 894 flow. Second operand 8 states and 204 transitions. [2024-06-27 18:20:28,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 173 transitions, 1372 flow [2024-06-27 18:20:28,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 173 transitions, 1299 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-27 18:20:28,341 INFO L231 Difference]: Finished difference. Result has 112 places, 129 transitions, 914 flow [2024-06-27 18:20:28,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=914, PETRI_PLACES=112, PETRI_TRANSITIONS=129} [2024-06-27 18:20:28,341 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 59 predicate places. [2024-06-27 18:20:28,342 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 129 transitions, 914 flow [2024-06-27 18:20:28,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:28,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:28,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:28,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:20:28,343 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:28,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:28,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1099418850, now seen corresponding path program 1 times [2024-06-27 18:20:28,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:28,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612704225] [2024-06-27 18:20:28,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:28,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:28,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:29,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:29,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:29,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612704225] [2024-06-27 18:20:29,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612704225] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:29,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:29,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:20:29,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048907278] [2024-06-27 18:20:29,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:29,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:20:29,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:29,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:20:29,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:20:29,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:20:29,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 129 transitions, 914 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:29,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:29,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:20:29,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:30,984 INFO L124 PetriNetUnfolderBase]: 3813/6049 cut-off events. [2024-06-27 18:20:30,985 INFO L125 PetriNetUnfolderBase]: For 72509/72513 co-relation queries the response was YES. [2024-06-27 18:20:31,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29572 conditions, 6049 events. 3813/6049 cut-off events. For 72509/72513 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 36969 event pairs, 1173 based on Foata normal form. 6/5939 useless extension candidates. Maximal degree in co-relation 29528. Up to 5332 conditions per place. [2024-06-27 18:20:31,041 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 153 selfloop transitions, 31 changer transitions 0/195 dead transitions. [2024-06-27 18:20:31,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 195 transitions, 1641 flow [2024-06-27 18:20:31,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:20:31,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:20:31,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 238 transitions. [2024-06-27 18:20:31,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5063829787234042 [2024-06-27 18:20:31,044 INFO L175 Difference]: Start difference. First operand has 112 places, 129 transitions, 914 flow. Second operand 10 states and 238 transitions. [2024-06-27 18:20:31,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 195 transitions, 1641 flow [2024-06-27 18:20:31,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 195 transitions, 1563 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-27 18:20:31,099 INFO L231 Difference]: Finished difference. Result has 119 places, 143 transitions, 1154 flow [2024-06-27 18:20:31,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=839, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1154, PETRI_PLACES=119, PETRI_TRANSITIONS=143} [2024-06-27 18:20:31,100 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 66 predicate places. [2024-06-27 18:20:31,100 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 143 transitions, 1154 flow [2024-06-27 18:20:31,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:31,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:31,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:31,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:20:31,101 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:31,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:31,102 INFO L85 PathProgramCache]: Analyzing trace with hash -983239902, now seen corresponding path program 3 times [2024-06-27 18:20:31,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:31,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779204949] [2024-06-27 18:20:31,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:31,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:31,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:32,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:32,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:32,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779204949] [2024-06-27 18:20:32,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779204949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:32,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:32,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:20:32,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888264369] [2024-06-27 18:20:32,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:32,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:20:32,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:32,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:20:32,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:20:32,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:20:32,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 143 transitions, 1154 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:32,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:32,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:20:32,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:33,594 INFO L124 PetriNetUnfolderBase]: 3617/5821 cut-off events. [2024-06-27 18:20:33,594 INFO L125 PetriNetUnfolderBase]: For 82843/82861 co-relation queries the response was YES. [2024-06-27 18:20:33,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29953 conditions, 5821 events. 3617/5821 cut-off events. For 82843/82861 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 36351 event pairs, 1041 based on Foata normal form. 12/5724 useless extension candidates. Maximal degree in co-relation 29905. Up to 5023 conditions per place. [2024-06-27 18:20:33,647 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 154 selfloop transitions, 21 changer transitions 0/192 dead transitions. [2024-06-27 18:20:33,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 192 transitions, 1708 flow [2024-06-27 18:20:33,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:20:33,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:20:33,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-27 18:20:33,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372340425531915 [2024-06-27 18:20:33,649 INFO L175 Difference]: Start difference. First operand has 119 places, 143 transitions, 1154 flow. Second operand 8 states and 202 transitions. [2024-06-27 18:20:33,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 192 transitions, 1708 flow [2024-06-27 18:20:33,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 192 transitions, 1533 flow, removed 79 selfloop flow, removed 4 redundant places. [2024-06-27 18:20:33,714 INFO L231 Difference]: Finished difference. Result has 124 places, 149 transitions, 1120 flow [2024-06-27 18:20:33,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1120, PETRI_PLACES=124, PETRI_TRANSITIONS=149} [2024-06-27 18:20:33,715 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 71 predicate places. [2024-06-27 18:20:33,715 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 149 transitions, 1120 flow [2024-06-27 18:20:33,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:33,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:33,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:33,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:20:33,716 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:33,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:33,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1036621573, now seen corresponding path program 1 times [2024-06-27 18:20:33,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:33,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557595046] [2024-06-27 18:20:33,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:33,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:35,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:35,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:35,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557595046] [2024-06-27 18:20:35,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557595046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:35,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:35,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:20:35,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389788816] [2024-06-27 18:20:35,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:35,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:20:35,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:35,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:20:35,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:20:35,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:20:35,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 149 transitions, 1120 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:35,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:35,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:20:35,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:36,476 INFO L124 PetriNetUnfolderBase]: 3938/6255 cut-off events. [2024-06-27 18:20:36,477 INFO L125 PetriNetUnfolderBase]: For 94231/94235 co-relation queries the response was YES. [2024-06-27 18:20:36,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32613 conditions, 6255 events. 3938/6255 cut-off events. For 94231/94235 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 38398 event pairs, 1155 based on Foata normal form. 8/6137 useless extension candidates. Maximal degree in co-relation 32562. Up to 5512 conditions per place. [2024-06-27 18:20:36,538 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 174 selfloop transitions, 21 changer transitions 0/206 dead transitions. [2024-06-27 18:20:36,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 206 transitions, 1739 flow [2024-06-27 18:20:36,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:20:36,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:20:36,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 219 transitions. [2024-06-27 18:20:36,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5177304964539007 [2024-06-27 18:20:36,540 INFO L175 Difference]: Start difference. First operand has 124 places, 149 transitions, 1120 flow. Second operand 9 states and 219 transitions. [2024-06-27 18:20:36,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 206 transitions, 1739 flow [2024-06-27 18:20:36,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 206 transitions, 1644 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-27 18:20:36,607 INFO L231 Difference]: Finished difference. Result has 131 places, 155 transitions, 1171 flow [2024-06-27 18:20:36,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1035, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1171, PETRI_PLACES=131, PETRI_TRANSITIONS=155} [2024-06-27 18:20:36,608 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 78 predicate places. [2024-06-27 18:20:36,608 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 155 transitions, 1171 flow [2024-06-27 18:20:36,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:36,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:36,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:36,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:20:36,609 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:36,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:36,609 INFO L85 PathProgramCache]: Analyzing trace with hash -983024700, now seen corresponding path program 2 times [2024-06-27 18:20:36,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:36,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107281621] [2024-06-27 18:20:36,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:36,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:36,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:37,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:37,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:37,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107281621] [2024-06-27 18:20:37,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107281621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:37,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:37,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:20:37,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308775222] [2024-06-27 18:20:37,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:37,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:20:37,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:37,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:20:37,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:20:38,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:20:38,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 155 transitions, 1171 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:38,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:38,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:20:38,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:39,579 INFO L124 PetriNetUnfolderBase]: 3980/6308 cut-off events. [2024-06-27 18:20:39,579 INFO L125 PetriNetUnfolderBase]: For 99955/99959 co-relation queries the response was YES. [2024-06-27 18:20:39,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33430 conditions, 6308 events. 3980/6308 cut-off events. For 99955/99959 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 38734 event pairs, 1131 based on Foata normal form. 6/6196 useless extension candidates. Maximal degree in co-relation 33376. Up to 5415 conditions per place. [2024-06-27 18:20:39,643 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 153 selfloop transitions, 67 changer transitions 0/231 dead transitions. [2024-06-27 18:20:39,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 231 transitions, 2115 flow [2024-06-27 18:20:39,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:20:39,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:20:39,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 267 transitions. [2024-06-27 18:20:39,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5164410058027079 [2024-06-27 18:20:39,645 INFO L175 Difference]: Start difference. First operand has 131 places, 155 transitions, 1171 flow. Second operand 11 states and 267 transitions. [2024-06-27 18:20:39,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 231 transitions, 2115 flow [2024-06-27 18:20:39,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 231 transitions, 2036 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-27 18:20:39,720 INFO L231 Difference]: Finished difference. Result has 140 places, 168 transitions, 1599 flow [2024-06-27 18:20:39,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1092, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1599, PETRI_PLACES=140, PETRI_TRANSITIONS=168} [2024-06-27 18:20:39,721 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 87 predicate places. [2024-06-27 18:20:39,721 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 168 transitions, 1599 flow [2024-06-27 18:20:39,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:39,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:39,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:39,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:20:39,722 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:39,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:39,722 INFO L85 PathProgramCache]: Analyzing trace with hash -580598522, now seen corresponding path program 1 times [2024-06-27 18:20:39,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:39,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81202402] [2024-06-27 18:20:39,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:39,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:39,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:40,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:40,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:40,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81202402] [2024-06-27 18:20:40,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81202402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:40,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:40,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:20:40,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310276668] [2024-06-27 18:20:40,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:40,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:20:40,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:40,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:20:40,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:20:40,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:20:40,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 168 transitions, 1599 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:40,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:40,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:20:40,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:41,710 INFO L124 PetriNetUnfolderBase]: 4331/6764 cut-off events. [2024-06-27 18:20:41,710 INFO L125 PetriNetUnfolderBase]: For 118011/118011 co-relation queries the response was YES. [2024-06-27 18:20:41,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37456 conditions, 6764 events. 4331/6764 cut-off events. For 118011/118011 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 40960 event pairs, 1326 based on Foata normal form. 2/6645 useless extension candidates. Maximal degree in co-relation 37398. Up to 6098 conditions per place. [2024-06-27 18:20:41,779 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 167 selfloop transitions, 28 changer transitions 0/204 dead transitions. [2024-06-27 18:20:41,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 204 transitions, 2227 flow [2024-06-27 18:20:41,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:20:41,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:20:41,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-27 18:20:41,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5141843971631206 [2024-06-27 18:20:41,780 INFO L175 Difference]: Start difference. First operand has 140 places, 168 transitions, 1599 flow. Second operand 6 states and 145 transitions. [2024-06-27 18:20:41,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 204 transitions, 2227 flow [2024-06-27 18:20:41,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 204 transitions, 1996 flow, removed 106 selfloop flow, removed 4 redundant places. [2024-06-27 18:20:41,963 INFO L231 Difference]: Finished difference. Result has 142 places, 174 transitions, 1512 flow [2024-06-27 18:20:41,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1372, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1512, PETRI_PLACES=142, PETRI_TRANSITIONS=174} [2024-06-27 18:20:41,964 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 89 predicate places. [2024-06-27 18:20:41,964 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 174 transitions, 1512 flow [2024-06-27 18:20:41,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:41,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:41,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:41,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:20:41,965 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:41,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:41,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1671960862, now seen corresponding path program 4 times [2024-06-27 18:20:41,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:41,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549391374] [2024-06-27 18:20:41,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:41,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:41,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:43,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:43,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:43,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549391374] [2024-06-27 18:20:43,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549391374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:43,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:43,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:20:43,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023449501] [2024-06-27 18:20:43,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:43,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:20:43,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:43,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:20:43,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:20:43,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:20:43,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 174 transitions, 1512 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:43,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:43,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:20:43,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:44,201 INFO L124 PetriNetUnfolderBase]: 3768/6011 cut-off events. [2024-06-27 18:20:44,202 INFO L125 PetriNetUnfolderBase]: For 111527/111589 co-relation queries the response was YES. [2024-06-27 18:20:44,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33907 conditions, 6011 events. 3768/6011 cut-off events. For 111527/111589 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 37286 event pairs, 990 based on Foata normal form. 24/5919 useless extension candidates. Maximal degree in co-relation 33848. Up to 5105 conditions per place. [2024-06-27 18:20:44,256 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 165 selfloop transitions, 38 changer transitions 0/224 dead transitions. [2024-06-27 18:20:44,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 224 transitions, 2154 flow [2024-06-27 18:20:44,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:20:44,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:20:44,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-27 18:20:44,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5398936170212766 [2024-06-27 18:20:44,259 INFO L175 Difference]: Start difference. First operand has 142 places, 174 transitions, 1512 flow. Second operand 8 states and 203 transitions. [2024-06-27 18:20:44,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 224 transitions, 2154 flow [2024-06-27 18:20:44,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 224 transitions, 2122 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-27 18:20:44,343 INFO L231 Difference]: Finished difference. Result has 149 places, 182 transitions, 1687 flow [2024-06-27 18:20:44,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1480, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1687, PETRI_PLACES=149, PETRI_TRANSITIONS=182} [2024-06-27 18:20:44,344 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 96 predicate places. [2024-06-27 18:20:44,344 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 182 transitions, 1687 flow [2024-06-27 18:20:44,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:44,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:44,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:44,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:20:44,345 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:44,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:44,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1671745381, now seen corresponding path program 2 times [2024-06-27 18:20:44,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:44,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909026690] [2024-06-27 18:20:44,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:44,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:44,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:45,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:45,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:45,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909026690] [2024-06-27 18:20:45,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909026690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:45,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:45,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:20:45,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246575350] [2024-06-27 18:20:45,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:45,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:20:45,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:45,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:20:45,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:20:45,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:20:45,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 182 transitions, 1687 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:45,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:45,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:20:45,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:46,669 INFO L124 PetriNetUnfolderBase]: 4048/6250 cut-off events. [2024-06-27 18:20:46,670 INFO L125 PetriNetUnfolderBase]: For 124999/125029 co-relation queries the response was YES. [2024-06-27 18:20:46,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36399 conditions, 6250 events. 4048/6250 cut-off events. For 124999/125029 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 36949 event pairs, 1021 based on Foata normal form. 20/6206 useless extension candidates. Maximal degree in co-relation 36337. Up to 5534 conditions per place. [2024-06-27 18:20:46,735 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 187 selfloop transitions, 54 changer transitions 0/254 dead transitions. [2024-06-27 18:20:46,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 254 transitions, 2752 flow [2024-06-27 18:20:46,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:20:46,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:20:46,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-06-27 18:20:46,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524822695035461 [2024-06-27 18:20:46,737 INFO L175 Difference]: Start difference. First operand has 149 places, 182 transitions, 1687 flow. Second operand 9 states and 222 transitions. [2024-06-27 18:20:46,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 254 transitions, 2752 flow [2024-06-27 18:20:46,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 254 transitions, 2612 flow, removed 43 selfloop flow, removed 4 redundant places. [2024-06-27 18:20:46,884 INFO L231 Difference]: Finished difference. Result has 157 places, 202 transitions, 2146 flow [2024-06-27 18:20:46,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1563, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2146, PETRI_PLACES=157, PETRI_TRANSITIONS=202} [2024-06-27 18:20:46,884 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 104 predicate places. [2024-06-27 18:20:46,885 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 202 transitions, 2146 flow [2024-06-27 18:20:46,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:46,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:46,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:46,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:20:46,885 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:46,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:46,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1325250276, now seen corresponding path program 3 times [2024-06-27 18:20:46,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:46,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961625942] [2024-06-27 18:20:46,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:46,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:46,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:47,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:47,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:47,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961625942] [2024-06-27 18:20:47,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961625942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:47,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:47,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:20:47,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311028541] [2024-06-27 18:20:47,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:47,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:20:47,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:47,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:20:47,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:20:48,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:20:48,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 202 transitions, 2146 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:48,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:48,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:20:48,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:49,387 INFO L124 PetriNetUnfolderBase]: 4071/6247 cut-off events. [2024-06-27 18:20:49,387 INFO L125 PetriNetUnfolderBase]: For 133295/133307 co-relation queries the response was YES. [2024-06-27 18:20:49,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37508 conditions, 6247 events. 4071/6247 cut-off events. For 133295/133307 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 36605 event pairs, 967 based on Foata normal form. 6/6201 useless extension candidates. Maximal degree in co-relation 37442. Up to 5377 conditions per place. [2024-06-27 18:20:49,457 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 155 selfloop transitions, 97 changer transitions 0/265 dead transitions. [2024-06-27 18:20:49,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 265 transitions, 3146 flow [2024-06-27 18:20:49,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:20:49,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:20:49,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 227 transitions. [2024-06-27 18:20:49,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5366430260047281 [2024-06-27 18:20:49,459 INFO L175 Difference]: Start difference. First operand has 157 places, 202 transitions, 2146 flow. Second operand 9 states and 227 transitions. [2024-06-27 18:20:49,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 265 transitions, 3146 flow [2024-06-27 18:20:49,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 265 transitions, 2793 flow, removed 162 selfloop flow, removed 4 redundant places. [2024-06-27 18:20:49,729 INFO L231 Difference]: Finished difference. Result has 163 places, 215 transitions, 2369 flow [2024-06-27 18:20:49,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1797, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2369, PETRI_PLACES=163, PETRI_TRANSITIONS=215} [2024-06-27 18:20:49,730 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 110 predicate places. [2024-06-27 18:20:49,730 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 215 transitions, 2369 flow [2024-06-27 18:20:49,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:49,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:49,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:49,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:20:49,731 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:49,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:49,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1405721671, now seen corresponding path program 3 times [2024-06-27 18:20:49,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:49,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352980210] [2024-06-27 18:20:49,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:49,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:50,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:50,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:50,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352980210] [2024-06-27 18:20:50,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352980210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:50,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:50,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:20:50,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812293216] [2024-06-27 18:20:50,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:50,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:20:50,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:50,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:20:50,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:20:50,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:20:50,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 215 transitions, 2369 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:50,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:50,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:20:50,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:52,136 INFO L124 PetriNetUnfolderBase]: 4118/6358 cut-off events. [2024-06-27 18:20:52,136 INFO L125 PetriNetUnfolderBase]: For 138945/138975 co-relation queries the response was YES. [2024-06-27 18:20:52,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38252 conditions, 6358 events. 4118/6358 cut-off events. For 138945/138975 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 37767 event pairs, 940 based on Foata normal form. 20/6315 useless extension candidates. Maximal degree in co-relation 38185. Up to 5382 conditions per place. [2024-06-27 18:20:52,199 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 187 selfloop transitions, 86 changer transitions 0/286 dead transitions. [2024-06-27 18:20:52,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 286 transitions, 3457 flow [2024-06-27 18:20:52,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:20:52,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:20:52,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 225 transitions. [2024-06-27 18:20:52,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-27 18:20:52,201 INFO L175 Difference]: Start difference. First operand has 163 places, 215 transitions, 2369 flow. Second operand 9 states and 225 transitions. [2024-06-27 18:20:52,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 286 transitions, 3457 flow [2024-06-27 18:20:52,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 286 transitions, 3053 flow, removed 160 selfloop flow, removed 4 redundant places. [2024-06-27 18:20:52,446 INFO L231 Difference]: Finished difference. Result has 171 places, 232 transitions, 2520 flow [2024-06-27 18:20:52,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1968, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2520, PETRI_PLACES=171, PETRI_TRANSITIONS=232} [2024-06-27 18:20:52,446 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 118 predicate places. [2024-06-27 18:20:52,447 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 232 transitions, 2520 flow [2024-06-27 18:20:52,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:52,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:52,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:52,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:20:52,447 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:52,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:52,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1406048380, now seen corresponding path program 4 times [2024-06-27 18:20:52,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:52,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111925283] [2024-06-27 18:20:52,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:52,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:52,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:53,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:53,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:53,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111925283] [2024-06-27 18:20:53,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111925283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:53,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:53,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:20:53,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994289890] [2024-06-27 18:20:53,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:53,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:20:53,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:53,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:20:53,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:20:53,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:20:53,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 232 transitions, 2520 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:53,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:53,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:20:53,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:55,094 INFO L124 PetriNetUnfolderBase]: 4171/6578 cut-off events. [2024-06-27 18:20:55,094 INFO L125 PetriNetUnfolderBase]: For 143577/143607 co-relation queries the response was YES. [2024-06-27 18:20:55,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39322 conditions, 6578 events. 4171/6578 cut-off events. For 143577/143607 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 40446 event pairs, 1097 based on Foata normal form. 18/6479 useless extension candidates. Maximal degree in co-relation 39251. Up to 5485 conditions per place. [2024-06-27 18:20:55,168 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 211 selfloop transitions, 71 changer transitions 0/295 dead transitions. [2024-06-27 18:20:55,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 295 transitions, 3544 flow [2024-06-27 18:20:55,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:20:55,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:20:55,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-06-27 18:20:55,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5342789598108747 [2024-06-27 18:20:55,177 INFO L175 Difference]: Start difference. First operand has 171 places, 232 transitions, 2520 flow. Second operand 9 states and 226 transitions. [2024-06-27 18:20:55,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 295 transitions, 3544 flow [2024-06-27 18:20:55,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 295 transitions, 3429 flow, removed 51 selfloop flow, removed 2 redundant places. [2024-06-27 18:20:55,370 INFO L231 Difference]: Finished difference. Result has 179 places, 244 transitions, 2813 flow [2024-06-27 18:20:55,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2405, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2813, PETRI_PLACES=179, PETRI_TRANSITIONS=244} [2024-06-27 18:20:55,375 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 126 predicate places. [2024-06-27 18:20:55,375 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 244 transitions, 2813 flow [2024-06-27 18:20:55,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:55,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:55,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:55,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:20:55,376 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:55,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:55,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1406048101, now seen corresponding path program 4 times [2024-06-27 18:20:55,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:55,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986754482] [2024-06-27 18:20:55,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:55,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:55,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:56,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:56,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:56,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986754482] [2024-06-27 18:20:56,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986754482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:56,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:56,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:20:56,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649932993] [2024-06-27 18:20:56,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:56,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:20:56,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:56,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:20:56,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:20:56,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:20:56,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 244 transitions, 2813 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:56,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:56,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:20:56,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:57,506 INFO L124 PetriNetUnfolderBase]: 4198/6490 cut-off events. [2024-06-27 18:20:57,506 INFO L125 PetriNetUnfolderBase]: For 153390/153420 co-relation queries the response was YES. [2024-06-27 18:20:57,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40665 conditions, 6490 events. 4198/6490 cut-off events. For 153390/153420 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 38682 event pairs, 1012 based on Foata normal form. 20/6447 useless extension candidates. Maximal degree in co-relation 40591. Up to 5670 conditions per place. [2024-06-27 18:20:57,573 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 205 selfloop transitions, 82 changer transitions 0/300 dead transitions. [2024-06-27 18:20:57,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 300 transitions, 3659 flow [2024-06-27 18:20:57,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:20:57,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:20:57,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-06-27 18:20:57,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524822695035461 [2024-06-27 18:20:57,575 INFO L175 Difference]: Start difference. First operand has 179 places, 244 transitions, 2813 flow. Second operand 9 states and 222 transitions. [2024-06-27 18:20:57,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 300 transitions, 3659 flow [2024-06-27 18:20:57,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 300 transitions, 3511 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-27 18:20:57,798 INFO L231 Difference]: Finished difference. Result has 183 places, 249 transitions, 2957 flow [2024-06-27 18:20:57,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2665, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2957, PETRI_PLACES=183, PETRI_TRANSITIONS=249} [2024-06-27 18:20:57,799 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 130 predicate places. [2024-06-27 18:20:57,799 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 249 transitions, 2957 flow [2024-06-27 18:20:57,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:57,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:57,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:57,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:20:57,800 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:57,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:57,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1415245150, now seen corresponding path program 5 times [2024-06-27 18:20:57,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:57,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403077121] [2024-06-27 18:20:57,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:57,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:57,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:58,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:58,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:58,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403077121] [2024-06-27 18:20:58,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403077121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:58,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:58,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:20:58,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710480423] [2024-06-27 18:20:58,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:58,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:20:58,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:58,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:20:58,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:20:58,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:20:58,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 249 transitions, 2957 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:58,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:58,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:20:58,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:00,083 INFO L124 PetriNetUnfolderBase]: 4193/6433 cut-off events. [2024-06-27 18:21:00,083 INFO L125 PetriNetUnfolderBase]: For 156343/156355 co-relation queries the response was YES. [2024-06-27 18:21:00,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40850 conditions, 6433 events. 4193/6433 cut-off events. For 156343/156355 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 37910 event pairs, 956 based on Foata normal form. 6/6389 useless extension candidates. Maximal degree in co-relation 40774. Up to 5553 conditions per place. [2024-06-27 18:21:00,152 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 186 selfloop transitions, 108 changer transitions 0/307 dead transitions. [2024-06-27 18:21:00,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 307 transitions, 3903 flow [2024-06-27 18:21:00,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:21:00,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:21:00,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-06-27 18:21:00,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5342789598108747 [2024-06-27 18:21:00,154 INFO L175 Difference]: Start difference. First operand has 183 places, 249 transitions, 2957 flow. Second operand 9 states and 226 transitions. [2024-06-27 18:21:00,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 307 transitions, 3903 flow [2024-06-27 18:21:00,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 307 transitions, 3627 flow, removed 60 selfloop flow, removed 6 redundant places. [2024-06-27 18:21:00,468 INFO L231 Difference]: Finished difference. Result has 186 places, 257 transitions, 3119 flow [2024-06-27 18:21:00,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2681, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3119, PETRI_PLACES=186, PETRI_TRANSITIONS=257} [2024-06-27 18:21:00,468 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 133 predicate places. [2024-06-27 18:21:00,468 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 257 transitions, 3119 flow [2024-06-27 18:21:00,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:00,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:00,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:00,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:21:00,469 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:00,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:00,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1415244871, now seen corresponding path program 5 times [2024-06-27 18:21:00,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:00,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373582391] [2024-06-27 18:21:00,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:00,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:01,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:01,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:01,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373582391] [2024-06-27 18:21:01,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373582391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:01,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:01,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:21:01,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888035265] [2024-06-27 18:21:01,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:01,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:21:01,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:01,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:21:01,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:21:01,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:21:01,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 257 transitions, 3119 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:01,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:01,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:21:01,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:02,818 INFO L124 PetriNetUnfolderBase]: 4203/6490 cut-off events. [2024-06-27 18:21:02,818 INFO L125 PetriNetUnfolderBase]: For 164877/164907 co-relation queries the response was YES. [2024-06-27 18:21:02,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41321 conditions, 6490 events. 4203/6490 cut-off events. For 164877/164907 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 38650 event pairs, 1019 based on Foata normal form. 20/6447 useless extension candidates. Maximal degree in co-relation 41244. Up to 5757 conditions per place. [2024-06-27 18:21:02,911 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 237 selfloop transitions, 60 changer transitions 0/310 dead transitions. [2024-06-27 18:21:02,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 310 transitions, 3931 flow [2024-06-27 18:21:02,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:21:02,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:21:02,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-06-27 18:21:02,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5224586288416075 [2024-06-27 18:21:02,914 INFO L175 Difference]: Start difference. First operand has 186 places, 257 transitions, 3119 flow. Second operand 9 states and 221 transitions. [2024-06-27 18:21:02,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 310 transitions, 3931 flow [2024-06-27 18:21:03,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 310 transitions, 3560 flow, removed 154 selfloop flow, removed 3 redundant places. [2024-06-27 18:21:03,309 INFO L231 Difference]: Finished difference. Result has 192 places, 259 transitions, 2942 flow [2024-06-27 18:21:03,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2786, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2942, PETRI_PLACES=192, PETRI_TRANSITIONS=259} [2024-06-27 18:21:03,309 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 139 predicate places. [2024-06-27 18:21:03,310 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 259 transitions, 2942 flow [2024-06-27 18:21:03,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:03,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:03,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:03,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:21:03,311 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:03,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:03,311 INFO L85 PathProgramCache]: Analyzing trace with hash -592204922, now seen corresponding path program 2 times [2024-06-27 18:21:03,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:03,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053844201] [2024-06-27 18:21:03,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:03,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:03,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:03,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:03,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:03,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053844201] [2024-06-27 18:21:03,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053844201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:03,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:03,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:21:03,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040044311] [2024-06-27 18:21:03,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:03,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:21:03,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:03,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:21:03,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:21:03,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:21:03,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 259 transitions, 2942 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:03,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:03,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:21:03,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:05,149 INFO L124 PetriNetUnfolderBase]: 4527/7112 cut-off events. [2024-06-27 18:21:05,149 INFO L125 PetriNetUnfolderBase]: For 168985/168985 co-relation queries the response was YES. [2024-06-27 18:21:05,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43123 conditions, 7112 events. 4527/7112 cut-off events. For 168985/168985 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 43855 event pairs, 1350 based on Foata normal form. 2/6978 useless extension candidates. Maximal degree in co-relation 43044. Up to 6385 conditions per place. [2024-06-27 18:21:05,224 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 244 selfloop transitions, 28 changer transitions 0/281 dead transitions. [2024-06-27 18:21:05,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 281 transitions, 3582 flow [2024-06-27 18:21:05,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:21:05,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:21:05,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-27 18:21:05,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4929078014184397 [2024-06-27 18:21:05,226 INFO L175 Difference]: Start difference. First operand has 192 places, 259 transitions, 2942 flow. Second operand 6 states and 139 transitions. [2024-06-27 18:21:05,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 281 transitions, 3582 flow [2024-06-27 18:21:05,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 281 transitions, 3448 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-27 18:21:05,408 INFO L231 Difference]: Finished difference. Result has 193 places, 259 transitions, 2870 flow [2024-06-27 18:21:05,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2808, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2870, PETRI_PLACES=193, PETRI_TRANSITIONS=259} [2024-06-27 18:21:05,409 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 140 predicate places. [2024-06-27 18:21:05,409 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 259 transitions, 2870 flow [2024-06-27 18:21:05,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:05,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:05,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:05,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:21:05,410 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:05,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:05,410 INFO L85 PathProgramCache]: Analyzing trace with hash -586813309, now seen corresponding path program 1 times [2024-06-27 18:21:05,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:05,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059025343] [2024-06-27 18:21:05,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:05,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:05,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:05,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:05,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:05,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059025343] [2024-06-27 18:21:05,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059025343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:05,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:05,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:21:05,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107467453] [2024-06-27 18:21:05,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:05,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:21:05,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:05,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:21:05,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:21:06,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:21:06,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 259 transitions, 2870 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:06,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:06,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:21:06,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:07,187 INFO L124 PetriNetUnfolderBase]: 4029/6689 cut-off events. [2024-06-27 18:21:07,187 INFO L125 PetriNetUnfolderBase]: For 147512/147512 co-relation queries the response was YES. [2024-06-27 18:21:07,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38883 conditions, 6689 events. 4029/6689 cut-off events. For 147512/147512 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 43400 event pairs, 1118 based on Foata normal form. 1/6518 useless extension candidates. Maximal degree in co-relation 38803. Up to 5755 conditions per place. [2024-06-27 18:21:07,246 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 264 selfloop transitions, 18 changer transitions 0/292 dead transitions. [2024-06-27 18:21:07,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 292 transitions, 3658 flow [2024-06-27 18:21:07,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:21:07,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:21:07,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-27 18:21:07,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-27 18:21:07,248 INFO L175 Difference]: Start difference. First operand has 193 places, 259 transitions, 2870 flow. Second operand 6 states and 144 transitions. [2024-06-27 18:21:07,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 292 transitions, 3658 flow [2024-06-27 18:21:07,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 292 transitions, 3575 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 18:21:07,433 INFO L231 Difference]: Finished difference. Result has 195 places, 269 transitions, 2945 flow [2024-06-27 18:21:07,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2793, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2945, PETRI_PLACES=195, PETRI_TRANSITIONS=269} [2024-06-27 18:21:07,433 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 142 predicate places. [2024-06-27 18:21:07,434 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 269 transitions, 2945 flow [2024-06-27 18:21:07,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:07,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:07,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:07,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:21:07,434 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:07,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:07,435 INFO L85 PathProgramCache]: Analyzing trace with hash 822085541, now seen corresponding path program 2 times [2024-06-27 18:21:07,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:07,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116430069] [2024-06-27 18:21:07,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:07,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:07,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:07,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:07,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116430069] [2024-06-27 18:21:07,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116430069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:07,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:07,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:21:07,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058596622] [2024-06-27 18:21:07,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:07,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:21:07,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:07,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:21:07,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:21:08,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:21:08,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 269 transitions, 2945 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:08,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:08,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:21:08,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:09,064 INFO L124 PetriNetUnfolderBase]: 4026/6521 cut-off events. [2024-06-27 18:21:09,064 INFO L125 PetriNetUnfolderBase]: For 155068/155068 co-relation queries the response was YES. [2024-06-27 18:21:09,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39620 conditions, 6521 events. 4026/6521 cut-off events. For 155068/155068 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 41239 event pairs, 1174 based on Foata normal form. 1/6403 useless extension candidates. Maximal degree in co-relation 39538. Up to 5778 conditions per place. [2024-06-27 18:21:09,144 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 263 selfloop transitions, 13 changer transitions 0/286 dead transitions. [2024-06-27 18:21:09,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 286 transitions, 3545 flow [2024-06-27 18:21:09,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:21:09,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:21:09,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-06-27 18:21:09,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4858156028368794 [2024-06-27 18:21:09,145 INFO L175 Difference]: Start difference. First operand has 195 places, 269 transitions, 2945 flow. Second operand 6 states and 137 transitions. [2024-06-27 18:21:09,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 286 transitions, 3545 flow [2024-06-27 18:21:09,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 286 transitions, 3491 flow, removed 26 selfloop flow, removed 1 redundant places. [2024-06-27 18:21:09,368 INFO L231 Difference]: Finished difference. Result has 200 places, 269 transitions, 2925 flow [2024-06-27 18:21:09,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2893, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2925, PETRI_PLACES=200, PETRI_TRANSITIONS=269} [2024-06-27 18:21:09,369 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 147 predicate places. [2024-06-27 18:21:09,369 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 269 transitions, 2925 flow [2024-06-27 18:21:09,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:09,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:09,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:09,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:21:09,370 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:09,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:09,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1724522433, now seen corresponding path program 1 times [2024-06-27 18:21:09,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:09,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086285454] [2024-06-27 18:21:09,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:09,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:09,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:10,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:10,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:10,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086285454] [2024-06-27 18:21:10,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086285454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:10,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:10,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:21:10,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757000483] [2024-06-27 18:21:10,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:10,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:21:10,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:10,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:21:10,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:21:10,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:21:10,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 269 transitions, 2925 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:10,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:10,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:21:10,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:12,220 INFO L124 PetriNetUnfolderBase]: 4427/7075 cut-off events. [2024-06-27 18:21:12,220 INFO L125 PetriNetUnfolderBase]: For 204781/204805 co-relation queries the response was YES. [2024-06-27 18:21:12,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44719 conditions, 7075 events. 4427/7075 cut-off events. For 204781/204805 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 44868 event pairs, 1236 based on Foata normal form. 16/6929 useless extension candidates. Maximal degree in co-relation 44634. Up to 6026 conditions per place. [2024-06-27 18:21:12,302 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 286 selfloop transitions, 32 changer transitions 0/334 dead transitions. [2024-06-27 18:21:12,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 334 transitions, 3837 flow [2024-06-27 18:21:12,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:21:12,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:21:12,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 264 transitions. [2024-06-27 18:21:12,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-27 18:21:12,305 INFO L175 Difference]: Start difference. First operand has 200 places, 269 transitions, 2925 flow. Second operand 11 states and 264 transitions. [2024-06-27 18:21:12,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 334 transitions, 3837 flow [2024-06-27 18:21:12,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 334 transitions, 3791 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 18:21:12,556 INFO L231 Difference]: Finished difference. Result has 205 places, 270 transitions, 3002 flow [2024-06-27 18:21:12,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2879, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3002, PETRI_PLACES=205, PETRI_TRANSITIONS=270} [2024-06-27 18:21:12,557 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 152 predicate places. [2024-06-27 18:21:12,557 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 270 transitions, 3002 flow [2024-06-27 18:21:12,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:12,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:12,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:12,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:21:12,557 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:12,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:12,558 INFO L85 PathProgramCache]: Analyzing trace with hash 425922417, now seen corresponding path program 2 times [2024-06-27 18:21:12,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:12,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998095218] [2024-06-27 18:21:12,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:12,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:12,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:13,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:13,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:13,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998095218] [2024-06-27 18:21:13,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998095218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:13,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:13,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:21:13,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243225562] [2024-06-27 18:21:13,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:13,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:21:13,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:13,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:21:13,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:21:13,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:21:13,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 270 transitions, 3002 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:13,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:13,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:21:13,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:15,418 INFO L124 PetriNetUnfolderBase]: 4627/7398 cut-off events. [2024-06-27 18:21:15,419 INFO L125 PetriNetUnfolderBase]: For 229040/229064 co-relation queries the response was YES. [2024-06-27 18:21:15,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47680 conditions, 7398 events. 4627/7398 cut-off events. For 229040/229064 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 47363 event pairs, 1275 based on Foata normal form. 16/7266 useless extension candidates. Maximal degree in co-relation 47596. Up to 6254 conditions per place. [2024-06-27 18:21:15,502 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 296 selfloop transitions, 29 changer transitions 0/341 dead transitions. [2024-06-27 18:21:15,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 341 transitions, 4010 flow [2024-06-27 18:21:15,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:21:15,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:21:15,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 248 transitions. [2024-06-27 18:21:15,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5276595744680851 [2024-06-27 18:21:15,504 INFO L175 Difference]: Start difference. First operand has 205 places, 270 transitions, 3002 flow. Second operand 10 states and 248 transitions. [2024-06-27 18:21:15,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 341 transitions, 4010 flow [2024-06-27 18:21:15,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 341 transitions, 3925 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 18:21:15,758 INFO L231 Difference]: Finished difference. Result has 207 places, 278 transitions, 3124 flow [2024-06-27 18:21:15,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2917, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3124, PETRI_PLACES=207, PETRI_TRANSITIONS=278} [2024-06-27 18:21:15,759 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 154 predicate places. [2024-06-27 18:21:15,759 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 278 transitions, 3124 flow [2024-06-27 18:21:15,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:15,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:15,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:15,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:21:15,760 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:15,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:15,760 INFO L85 PathProgramCache]: Analyzing trace with hash -408993015, now seen corresponding path program 3 times [2024-06-27 18:21:15,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:15,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423942948] [2024-06-27 18:21:15,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:15,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:15,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:17,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:17,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:17,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423942948] [2024-06-27 18:21:17,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423942948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:17,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:17,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:21:17,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60965005] [2024-06-27 18:21:17,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:17,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:21:17,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:17,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:21:17,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:21:17,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:21:17,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 278 transitions, 3124 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:17,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:17,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:21:17,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:19,145 INFO L124 PetriNetUnfolderBase]: 4794/7679 cut-off events. [2024-06-27 18:21:19,145 INFO L125 PetriNetUnfolderBase]: For 245633/245657 co-relation queries the response was YES. [2024-06-27 18:21:19,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49848 conditions, 7679 events. 4794/7679 cut-off events. For 245633/245657 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 49537 event pairs, 1308 based on Foata normal form. 16/7542 useless extension candidates. Maximal degree in co-relation 49762. Up to 6478 conditions per place. [2024-06-27 18:21:19,219 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 296 selfloop transitions, 39 changer transitions 0/351 dead transitions. [2024-06-27 18:21:19,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 351 transitions, 4112 flow [2024-06-27 18:21:19,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:21:19,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:21:19,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 273 transitions. [2024-06-27 18:21:19,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.528046421663443 [2024-06-27 18:21:19,221 INFO L175 Difference]: Start difference. First operand has 207 places, 278 transitions, 3124 flow. Second operand 11 states and 273 transitions. [2024-06-27 18:21:19,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 351 transitions, 4112 flow [2024-06-27 18:21:19,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 351 transitions, 4031 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 18:21:19,480 INFO L231 Difference]: Finished difference. Result has 211 places, 281 transitions, 3201 flow [2024-06-27 18:21:19,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3043, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3201, PETRI_PLACES=211, PETRI_TRANSITIONS=281} [2024-06-27 18:21:19,481 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 158 predicate places. [2024-06-27 18:21:19,481 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 281 transitions, 3201 flow [2024-06-27 18:21:19,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:19,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:19,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:19,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:21:19,482 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:19,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:19,482 INFO L85 PathProgramCache]: Analyzing trace with hash -409223655, now seen corresponding path program 4 times [2024-06-27 18:21:19,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:19,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939662993] [2024-06-27 18:21:19,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:19,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:19,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:20,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:20,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:20,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939662993] [2024-06-27 18:21:20,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939662993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:20,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:20,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:21:20,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122322837] [2024-06-27 18:21:20,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:20,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:21:20,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:20,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:21:20,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:21:20,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:21:20,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 281 transitions, 3201 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:20,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:20,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:21:20,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:22,648 INFO L124 PetriNetUnfolderBase]: 4924/7945 cut-off events. [2024-06-27 18:21:22,649 INFO L125 PetriNetUnfolderBase]: For 262723/262747 co-relation queries the response was YES. [2024-06-27 18:21:22,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51978 conditions, 7945 events. 4924/7945 cut-off events. For 262723/262747 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 52009 event pairs, 1374 based on Foata normal form. 16/7795 useless extension candidates. Maximal degree in co-relation 51892. Up to 6765 conditions per place. [2024-06-27 18:21:22,746 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 300 selfloop transitions, 28 changer transitions 0/344 dead transitions. [2024-06-27 18:21:22,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 344 transitions, 4141 flow [2024-06-27 18:21:22,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:21:22,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:21:22,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 247 transitions. [2024-06-27 18:21:22,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5255319148936171 [2024-06-27 18:21:22,754 INFO L175 Difference]: Start difference. First operand has 211 places, 281 transitions, 3201 flow. Second operand 10 states and 247 transitions. [2024-06-27 18:21:22,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 344 transitions, 4141 flow [2024-06-27 18:21:23,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 344 transitions, 4039 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 18:21:23,185 INFO L231 Difference]: Finished difference. Result has 213 places, 282 transitions, 3220 flow [2024-06-27 18:21:23,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3099, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3220, PETRI_PLACES=213, PETRI_TRANSITIONS=282} [2024-06-27 18:21:23,185 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 160 predicate places. [2024-06-27 18:21:23,185 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 282 transitions, 3220 flow [2024-06-27 18:21:23,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:23,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:23,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:23,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:21:23,186 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:23,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:23,187 INFO L85 PathProgramCache]: Analyzing trace with hash 432417537, now seen corresponding path program 5 times [2024-06-27 18:21:23,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:23,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009075442] [2024-06-27 18:21:23,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:23,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:23,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:24,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:24,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:24,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009075442] [2024-06-27 18:21:24,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009075442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:24,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:24,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:21:24,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806468000] [2024-06-27 18:21:24,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:24,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:21:24,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:24,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:21:24,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:21:24,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:21:24,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 282 transitions, 3220 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:24,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:24,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:21:24,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:26,510 INFO L124 PetriNetUnfolderBase]: 5176/8305 cut-off events. [2024-06-27 18:21:26,510 INFO L125 PetriNetUnfolderBase]: For 280388/280412 co-relation queries the response was YES. [2024-06-27 18:21:26,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55089 conditions, 8305 events. 5176/8305 cut-off events. For 280388/280412 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 54390 event pairs, 1299 based on Foata normal form. 12/8141 useless extension candidates. Maximal degree in co-relation 55002. Up to 6271 conditions per place. [2024-06-27 18:21:26,600 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 250 selfloop transitions, 87 changer transitions 0/353 dead transitions. [2024-06-27 18:21:26,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 353 transitions, 4317 flow [2024-06-27 18:21:26,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:21:26,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:21:26,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 253 transitions. [2024-06-27 18:21:26,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5382978723404256 [2024-06-27 18:21:26,602 INFO L175 Difference]: Start difference. First operand has 213 places, 282 transitions, 3220 flow. Second operand 10 states and 253 transitions. [2024-06-27 18:21:26,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 353 transitions, 4317 flow [2024-06-27 18:21:26,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 353 transitions, 4208 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-27 18:21:27,003 INFO L231 Difference]: Finished difference. Result has 214 places, 286 transitions, 3482 flow [2024-06-27 18:21:27,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3111, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3482, PETRI_PLACES=214, PETRI_TRANSITIONS=286} [2024-06-27 18:21:27,003 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 161 predicate places. [2024-06-27 18:21:27,004 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 286 transitions, 3482 flow [2024-06-27 18:21:27,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:27,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:27,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:27,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:21:27,004 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:27,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:27,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1189581541, now seen corresponding path program 1 times [2024-06-27 18:21:27,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:27,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007157424] [2024-06-27 18:21:27,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:27,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:27,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:27,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:27,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:27,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007157424] [2024-06-27 18:21:27,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007157424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:27,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:27,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:21:27,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383746120] [2024-06-27 18:21:27,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:27,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:21:27,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:27,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:21:27,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:21:27,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:21:27,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 286 transitions, 3482 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:27,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:27,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:21:27,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:29,242 INFO L124 PetriNetUnfolderBase]: 5434/8768 cut-off events. [2024-06-27 18:21:29,242 INFO L125 PetriNetUnfolderBase]: For 279098/279098 co-relation queries the response was YES. [2024-06-27 18:21:29,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56940 conditions, 8768 events. 5434/8768 cut-off events. For 279098/279098 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 58149 event pairs, 1595 based on Foata normal form. 2/8582 useless extension candidates. Maximal degree in co-relation 56853. Up to 7701 conditions per place. [2024-06-27 18:21:29,344 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 285 selfloop transitions, 37 changer transitions 0/331 dead transitions. [2024-06-27 18:21:29,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 331 transitions, 4456 flow [2024-06-27 18:21:29,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:21:29,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:21:29,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-27 18:21:29,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-27 18:21:29,346 INFO L175 Difference]: Start difference. First operand has 214 places, 286 transitions, 3482 flow. Second operand 7 states and 168 transitions. [2024-06-27 18:21:29,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 331 transitions, 4456 flow [2024-06-27 18:21:29,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 331 transitions, 4287 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-27 18:21:29,885 INFO L231 Difference]: Finished difference. Result has 216 places, 295 transitions, 3509 flow [2024-06-27 18:21:29,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3313, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3509, PETRI_PLACES=216, PETRI_TRANSITIONS=295} [2024-06-27 18:21:29,886 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 163 predicate places. [2024-06-27 18:21:29,886 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 295 transitions, 3509 flow [2024-06-27 18:21:29,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:29,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:29,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:29,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:21:29,887 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:29,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:29,887 INFO L85 PathProgramCache]: Analyzing trace with hash -922916707, now seen corresponding path program 6 times [2024-06-27 18:21:29,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:29,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392705922] [2024-06-27 18:21:29,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:29,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:30,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:30,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:30,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392705922] [2024-06-27 18:21:30,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392705922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:30,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:30,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:21:30,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386645081] [2024-06-27 18:21:30,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:30,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:21:30,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:30,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:21:30,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:21:31,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:21:31,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 295 transitions, 3509 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:31,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:31,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:21:31,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:32,656 INFO L124 PetriNetUnfolderBase]: 5383/8430 cut-off events. [2024-06-27 18:21:32,656 INFO L125 PetriNetUnfolderBase]: For 315151/315169 co-relation queries the response was YES. [2024-06-27 18:21:32,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59751 conditions, 8430 events. 5383/8430 cut-off events. For 315151/315169 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 53571 event pairs, 1160 based on Foata normal form. 12/8348 useless extension candidates. Maximal degree in co-relation 59661. Up to 6959 conditions per place. [2024-06-27 18:21:32,759 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 235 selfloop transitions, 113 changer transitions 0/364 dead transitions. [2024-06-27 18:21:32,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 364 transitions, 4739 flow [2024-06-27 18:21:32,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:21:32,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:21:32,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 256 transitions. [2024-06-27 18:21:32,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5446808510638298 [2024-06-27 18:21:32,761 INFO L175 Difference]: Start difference. First operand has 216 places, 295 transitions, 3509 flow. Second operand 10 states and 256 transitions. [2024-06-27 18:21:32,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 364 transitions, 4739 flow [2024-06-27 18:21:33,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 364 transitions, 4699 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-06-27 18:21:33,226 INFO L231 Difference]: Finished difference. Result has 224 places, 297 transitions, 3823 flow [2024-06-27 18:21:33,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3469, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3823, PETRI_PLACES=224, PETRI_TRANSITIONS=297} [2024-06-27 18:21:33,227 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 171 predicate places. [2024-06-27 18:21:33,227 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 297 transitions, 3823 flow [2024-06-27 18:21:33,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:33,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:33,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:33,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:21:33,227 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:33,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:33,228 INFO L85 PathProgramCache]: Analyzing trace with hash -922925077, now seen corresponding path program 7 times [2024-06-27 18:21:33,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:33,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498279745] [2024-06-27 18:21:33,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:33,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:33,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:34,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:34,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:34,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498279745] [2024-06-27 18:21:34,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498279745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:34,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:34,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:21:34,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67384576] [2024-06-27 18:21:34,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:34,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:21:34,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:34,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:21:34,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:21:34,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:21:34,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 297 transitions, 3823 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:34,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:34,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:21:34,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:36,499 INFO L124 PetriNetUnfolderBase]: 5513/8621 cut-off events. [2024-06-27 18:21:36,500 INFO L125 PetriNetUnfolderBase]: For 350288/350306 co-relation queries the response was YES. [2024-06-27 18:21:36,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62876 conditions, 8621 events. 5513/8621 cut-off events. For 350288/350306 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 54895 event pairs, 1196 based on Foata normal form. 16/8543 useless extension candidates. Maximal degree in co-relation 62783. Up to 7384 conditions per place. [2024-06-27 18:21:36,630 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 232 selfloop transitions, 112 changer transitions 0/360 dead transitions. [2024-06-27 18:21:36,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 360 transitions, 4809 flow [2024-06-27 18:21:36,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:21:36,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:21:36,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 252 transitions. [2024-06-27 18:21:36,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5361702127659574 [2024-06-27 18:21:36,632 INFO L175 Difference]: Start difference. First operand has 224 places, 297 transitions, 3823 flow. Second operand 10 states and 252 transitions. [2024-06-27 18:21:36,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 360 transitions, 4809 flow [2024-06-27 18:21:37,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 360 transitions, 4627 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-27 18:21:37,369 INFO L231 Difference]: Finished difference. Result has 228 places, 298 transitions, 3938 flow [2024-06-27 18:21:37,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3647, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3938, PETRI_PLACES=228, PETRI_TRANSITIONS=298} [2024-06-27 18:21:37,375 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 175 predicate places. [2024-06-27 18:21:37,376 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 298 transitions, 3938 flow [2024-06-27 18:21:37,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:37,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:37,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:37,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:21:37,377 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:37,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:37,377 INFO L85 PathProgramCache]: Analyzing trace with hash -923155717, now seen corresponding path program 8 times [2024-06-27 18:21:37,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:37,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858438509] [2024-06-27 18:21:37,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:37,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:37,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:38,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:38,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:38,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858438509] [2024-06-27 18:21:38,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858438509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:38,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:38,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:21:38,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678408886] [2024-06-27 18:21:38,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:38,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:21:38,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:38,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:21:38,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:21:39,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:21:39,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 298 transitions, 3938 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:39,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:39,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:21:39,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:41,251 INFO L124 PetriNetUnfolderBase]: 5543/9098 cut-off events. [2024-06-27 18:21:41,252 INFO L125 PetriNetUnfolderBase]: For 342216/342260 co-relation queries the response was YES. [2024-06-27 18:21:41,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63038 conditions, 9098 events. 5543/9098 cut-off events. For 342216/342260 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 62226 event pairs, 1425 based on Foata normal form. 28/8875 useless extension candidates. Maximal degree in co-relation 62943. Up to 7585 conditions per place. [2024-06-27 18:21:41,358 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 297 selfloop transitions, 47 changer transitions 0/360 dead transitions. [2024-06-27 18:21:41,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 360 transitions, 4918 flow [2024-06-27 18:21:41,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:21:41,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:21:41,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 248 transitions. [2024-06-27 18:21:41,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5276595744680851 [2024-06-27 18:21:41,360 INFO L175 Difference]: Start difference. First operand has 228 places, 298 transitions, 3938 flow. Second operand 10 states and 248 transitions. [2024-06-27 18:21:41,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 360 transitions, 4918 flow [2024-06-27 18:21:41,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 360 transitions, 4619 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-27 18:21:41,911 INFO L231 Difference]: Finished difference. Result has 230 places, 299 transitions, 3800 flow [2024-06-27 18:21:41,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3665, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3800, PETRI_PLACES=230, PETRI_TRANSITIONS=299} [2024-06-27 18:21:41,912 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 177 predicate places. [2024-06-27 18:21:41,912 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 299 transitions, 3800 flow [2024-06-27 18:21:41,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:41,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:41,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:41,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:21:41,913 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:41,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:41,913 INFO L85 PathProgramCache]: Analyzing trace with hash -290993045, now seen corresponding path program 9 times [2024-06-27 18:21:41,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:41,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034591819] [2024-06-27 18:21:41,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:41,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:41,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:43,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:43,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:43,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034591819] [2024-06-27 18:21:43,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034591819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:43,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:43,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:21:43,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754633968] [2024-06-27 18:21:43,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:43,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:21:43,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:43,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:21:43,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:21:43,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:21:43,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 299 transitions, 3800 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:43,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:43,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:21:43,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:45,544 INFO L124 PetriNetUnfolderBase]: 5756/9466 cut-off events. [2024-06-27 18:21:45,545 INFO L125 PetriNetUnfolderBase]: For 345541/345585 co-relation queries the response was YES. [2024-06-27 18:21:45,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64540 conditions, 9466 events. 5756/9466 cut-off events. For 345541/345585 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 65258 event pairs, 1463 based on Foata normal form. 28/9238 useless extension candidates. Maximal degree in co-relation 64444. Up to 7846 conditions per place. [2024-06-27 18:21:45,673 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 303 selfloop transitions, 50 changer transitions 0/369 dead transitions. [2024-06-27 18:21:45,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 369 transitions, 4882 flow [2024-06-27 18:21:45,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:21:45,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:21:45,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 250 transitions. [2024-06-27 18:21:45,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-27 18:21:45,675 INFO L175 Difference]: Start difference. First operand has 230 places, 299 transitions, 3800 flow. Second operand 10 states and 250 transitions. [2024-06-27 18:21:45,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 369 transitions, 4882 flow [2024-06-27 18:21:46,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 369 transitions, 4783 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 18:21:46,253 INFO L231 Difference]: Finished difference. Result has 235 places, 307 transitions, 3962 flow [2024-06-27 18:21:46,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3707, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3962, PETRI_PLACES=235, PETRI_TRANSITIONS=307} [2024-06-27 18:21:46,253 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 182 predicate places. [2024-06-27 18:21:46,254 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 307 transitions, 3962 flow [2024-06-27 18:21:46,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:46,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:46,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:46,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:21:46,255 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:46,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:46,255 INFO L85 PathProgramCache]: Analyzing trace with hash -627697507, now seen corresponding path program 10 times [2024-06-27 18:21:46,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:46,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26335519] [2024-06-27 18:21:46,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:46,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:46,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:47,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:47,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:47,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26335519] [2024-06-27 18:21:47,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26335519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:47,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:47,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:21:47,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583126813] [2024-06-27 18:21:47,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:47,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:21:47,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:47,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:21:47,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:21:47,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:21:47,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 307 transitions, 3962 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:47,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:47,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:21:47,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:49,539 INFO L124 PetriNetUnfolderBase]: 6025/9428 cut-off events. [2024-06-27 18:21:49,540 INFO L125 PetriNetUnfolderBase]: For 403229/403247 co-relation queries the response was YES. [2024-06-27 18:21:49,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69859 conditions, 9428 events. 6025/9428 cut-off events. For 403229/403247 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 60847 event pairs, 1135 based on Foata normal form. 12/9346 useless extension candidates. Maximal degree in co-relation 69761. Up to 5919 conditions per place. [2024-06-27 18:21:49,684 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 176 selfloop transitions, 189 changer transitions 0/381 dead transitions. [2024-06-27 18:21:49,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 381 transitions, 5433 flow [2024-06-27 18:21:49,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:21:49,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:21:49,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 257 transitions. [2024-06-27 18:21:49,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5468085106382978 [2024-06-27 18:21:49,686 INFO L175 Difference]: Start difference. First operand has 235 places, 307 transitions, 3962 flow. Second operand 10 states and 257 transitions. [2024-06-27 18:21:49,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 381 transitions, 5433 flow [2024-06-27 18:21:50,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 381 transitions, 5269 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-27 18:21:50,579 INFO L231 Difference]: Finished difference. Result has 241 places, 313 transitions, 4653 flow [2024-06-27 18:21:50,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3833, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4653, PETRI_PLACES=241, PETRI_TRANSITIONS=313} [2024-06-27 18:21:50,580 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 188 predicate places. [2024-06-27 18:21:50,580 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 313 transitions, 4653 flow [2024-06-27 18:21:50,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:50,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:50,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:50,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:21:50,581 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:50,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:50,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1934149131, now seen corresponding path program 11 times [2024-06-27 18:21:50,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:50,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610972597] [2024-06-27 18:21:50,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:50,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:50,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:51,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:51,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:51,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610972597] [2024-06-27 18:21:51,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610972597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:51,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:51,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:21:51,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521232909] [2024-06-27 18:21:51,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:51,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:21:51,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:51,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:21:51,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:21:51,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:21:51,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 313 transitions, 4653 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:51,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:51,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:21:51,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:54,677 INFO L124 PetriNetUnfolderBase]: 6250/10288 cut-off events. [2024-06-27 18:21:54,677 INFO L125 PetriNetUnfolderBase]: For 440034/440078 co-relation queries the response was YES. [2024-06-27 18:21:54,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75572 conditions, 10288 events. 6250/10288 cut-off events. For 440034/440078 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 71807 event pairs, 1573 based on Foata normal form. 28/10048 useless extension candidates. Maximal degree in co-relation 75471. Up to 8245 conditions per place. [2024-06-27 18:21:54,884 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 288 selfloop transitions, 90 changer transitions 0/394 dead transitions. [2024-06-27 18:21:54,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 394 transitions, 5809 flow [2024-06-27 18:21:54,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:21:54,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:21:54,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 300 transitions. [2024-06-27 18:21:54,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-27 18:21:54,886 INFO L175 Difference]: Start difference. First operand has 241 places, 313 transitions, 4653 flow. Second operand 12 states and 300 transitions. [2024-06-27 18:21:54,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 394 transitions, 5809 flow [2024-06-27 18:21:56,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 394 transitions, 5592 flow, removed 50 selfloop flow, removed 5 redundant places. [2024-06-27 18:21:56,337 INFO L231 Difference]: Finished difference. Result has 248 places, 317 transitions, 4749 flow [2024-06-27 18:21:56,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4440, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4749, PETRI_PLACES=248, PETRI_TRANSITIONS=317} [2024-06-27 18:21:56,338 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 195 predicate places. [2024-06-27 18:21:56,338 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 317 transitions, 4749 flow [2024-06-27 18:21:56,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:56,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:56,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:56,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 18:21:56,339 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:56,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:56,339 INFO L85 PathProgramCache]: Analyzing trace with hash -637816837, now seen corresponding path program 12 times [2024-06-27 18:21:56,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:56,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795264857] [2024-06-27 18:21:56,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:56,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:56,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:57,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:57,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:57,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795264857] [2024-06-27 18:21:57,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795264857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:57,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:57,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:21:57,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975516713] [2024-06-27 18:21:57,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:57,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:21:57,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:57,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:21:57,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:21:57,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:21:57,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 317 transitions, 4749 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:57,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:57,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:21:57,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:59,562 INFO L124 PetriNetUnfolderBase]: 6341/9956 cut-off events. [2024-06-27 18:21:59,562 INFO L125 PetriNetUnfolderBase]: For 438210/438228 co-relation queries the response was YES. [2024-06-27 18:21:59,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76993 conditions, 9956 events. 6341/9956 cut-off events. For 438210/438228 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 65447 event pairs, 1314 based on Foata normal form. 12/9874 useless extension candidates. Maximal degree in co-relation 76890. Up to 8236 conditions per place. [2024-06-27 18:21:59,725 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 196 selfloop transitions, 172 changer transitions 0/384 dead transitions. [2024-06-27 18:21:59,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 384 transitions, 5891 flow [2024-06-27 18:21:59,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:21:59,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:21:59,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 255 transitions. [2024-06-27 18:21:59,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5425531914893617 [2024-06-27 18:21:59,727 INFO L175 Difference]: Start difference. First operand has 248 places, 317 transitions, 4749 flow. Second operand 10 states and 255 transitions. [2024-06-27 18:21:59,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 384 transitions, 5891 flow [2024-06-27 18:22:00,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 384 transitions, 5726 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 18:22:00,531 INFO L231 Difference]: Finished difference. Result has 250 places, 319 transitions, 5070 flow [2024-06-27 18:22:00,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4584, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5070, PETRI_PLACES=250, PETRI_TRANSITIONS=319} [2024-06-27 18:22:00,532 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 197 predicate places. [2024-06-27 18:22:00,532 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 319 transitions, 5070 flow [2024-06-27 18:22:00,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:00,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:00,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:00,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 18:22:00,533 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:22:00,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:00,533 INFO L85 PathProgramCache]: Analyzing trace with hash -284497925, now seen corresponding path program 13 times [2024-06-27 18:22:00,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:00,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404836904] [2024-06-27 18:22:00,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:00,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:00,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:01,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:01,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:01,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404836904] [2024-06-27 18:22:01,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404836904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:01,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:01,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:22:01,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797583064] [2024-06-27 18:22:01,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:01,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:22:01,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:01,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:22:01,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:22:01,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:22:01,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 319 transitions, 5070 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:01,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:01,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:22:01,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:03,741 INFO L124 PetriNetUnfolderBase]: 6434/10111 cut-off events. [2024-06-27 18:22:03,742 INFO L125 PetriNetUnfolderBase]: For 453881/453899 co-relation queries the response was YES. [2024-06-27 18:22:03,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78650 conditions, 10111 events. 6434/10111 cut-off events. For 453881/453899 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 66696 event pairs, 1338 based on Foata normal form. 12/10026 useless extension candidates. Maximal degree in co-relation 78546. Up to 8397 conditions per place. [2024-06-27 18:22:03,893 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 256 selfloop transitions, 115 changer transitions 0/387 dead transitions. [2024-06-27 18:22:03,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 387 transitions, 6327 flow [2024-06-27 18:22:03,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:22:03,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:22:03,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 257 transitions. [2024-06-27 18:22:03,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5468085106382978 [2024-06-27 18:22:03,897 INFO L175 Difference]: Start difference. First operand has 250 places, 319 transitions, 5070 flow. Second operand 10 states and 257 transitions. [2024-06-27 18:22:03,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 387 transitions, 6327 flow [2024-06-27 18:22:05,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 387 transitions, 5918 flow, removed 63 selfloop flow, removed 6 redundant places. [2024-06-27 18:22:05,221 INFO L231 Difference]: Finished difference. Result has 254 places, 320 transitions, 4966 flow [2024-06-27 18:22:05,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4661, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4966, PETRI_PLACES=254, PETRI_TRANSITIONS=320} [2024-06-27 18:22:05,222 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 201 predicate places. [2024-06-27 18:22:05,222 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 320 transitions, 4966 flow [2024-06-27 18:22:05,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:05,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:05,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:05,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 18:22:05,222 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:22:05,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:05,223 INFO L85 PathProgramCache]: Analyzing trace with hash -284506295, now seen corresponding path program 14 times [2024-06-27 18:22:05,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:05,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781935028] [2024-06-27 18:22:05,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:05,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:05,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:06,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:06,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:06,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781935028] [2024-06-27 18:22:06,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781935028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:06,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:06,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:22:06,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972151840] [2024-06-27 18:22:06,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:06,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:22:06,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:06,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:22:06,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:22:06,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:22:06,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 320 transitions, 4966 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:06,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:06,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:22:06,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:09,049 INFO L124 PetriNetUnfolderBase]: 6564/10313 cut-off events. [2024-06-27 18:22:09,049 INFO L125 PetriNetUnfolderBase]: For 476290/476308 co-relation queries the response was YES. [2024-06-27 18:22:09,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80733 conditions, 10313 events. 6564/10313 cut-off events. For 476290/476308 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 68266 event pairs, 1392 based on Foata normal form. 16/10232 useless extension candidates. Maximal degree in co-relation 80627. Up to 8994 conditions per place. [2024-06-27 18:22:09,184 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 254 selfloop transitions, 113 changer transitions 0/383 dead transitions. [2024-06-27 18:22:09,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 383 transitions, 6009 flow [2024-06-27 18:22:09,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:22:09,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:22:09,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 253 transitions. [2024-06-27 18:22:09,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5382978723404256 [2024-06-27 18:22:09,186 INFO L175 Difference]: Start difference. First operand has 254 places, 320 transitions, 4966 flow. Second operand 10 states and 253 transitions. [2024-06-27 18:22:09,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 383 transitions, 6009 flow [2024-06-27 18:22:10,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 383 transitions, 5411 flow, removed 27 selfloop flow, removed 11 redundant places. [2024-06-27 18:22:10,496 INFO L231 Difference]: Finished difference. Result has 253 places, 321 transitions, 4676 flow [2024-06-27 18:22:10,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4376, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4676, PETRI_PLACES=253, PETRI_TRANSITIONS=321} [2024-06-27 18:22:10,497 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 200 predicate places. [2024-06-27 18:22:10,497 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 321 transitions, 4676 flow [2024-06-27 18:22:10,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:10,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:10,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:10,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 18:22:10,497 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:22:10,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:10,498 INFO L85 PathProgramCache]: Analyzing trace with hash -284736935, now seen corresponding path program 15 times [2024-06-27 18:22:10,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:10,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287745] [2024-06-27 18:22:10,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:10,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:10,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:11,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:11,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:11,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287745] [2024-06-27 18:22:11,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:11,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:11,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:22:11,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944680855] [2024-06-27 18:22:11,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:11,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:22:11,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:11,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:22:11,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:22:12,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:22:12,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 321 transitions, 4676 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:12,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:12,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:22:12,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:15,132 INFO L124 PetriNetUnfolderBase]: 6594/10958 cut-off events. [2024-06-27 18:22:15,133 INFO L125 PetriNetUnfolderBase]: For 457142/457186 co-relation queries the response was YES. [2024-06-27 18:22:15,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78399 conditions, 10958 events. 6594/10958 cut-off events. For 457142/457186 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 78292 event pairs, 1699 based on Foata normal form. 28/10680 useless extension candidates. Maximal degree in co-relation 78295. Up to 9212 conditions per place. [2024-06-27 18:22:15,305 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 319 selfloop transitions, 48 changer transitions 0/383 dead transitions. [2024-06-27 18:22:15,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 383 transitions, 5711 flow [2024-06-27 18:22:15,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:22:15,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:22:15,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 250 transitions. [2024-06-27 18:22:15,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-27 18:22:15,307 INFO L175 Difference]: Start difference. First operand has 253 places, 321 transitions, 4676 flow. Second operand 10 states and 250 transitions. [2024-06-27 18:22:15,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 383 transitions, 5711 flow [2024-06-27 18:22:16,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 383 transitions, 5398 flow, removed 46 selfloop flow, removed 8 redundant places. [2024-06-27 18:22:16,542 INFO L231 Difference]: Finished difference. Result has 255 places, 322 transitions, 4533 flow [2024-06-27 18:22:16,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4391, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4533, PETRI_PLACES=255, PETRI_TRANSITIONS=322} [2024-06-27 18:22:16,543 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 202 predicate places. [2024-06-27 18:22:16,543 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 322 transitions, 4533 flow [2024-06-27 18:22:16,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:16,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:16,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:16,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 18:22:16,544 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:22:16,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:16,545 INFO L85 PathProgramCache]: Analyzing trace with hash -805796581, now seen corresponding path program 2 times [2024-06-27 18:22:16,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:16,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389597750] [2024-06-27 18:22:16,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:16,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:16,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:17,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:17,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:17,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389597750] [2024-06-27 18:22:17,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389597750] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:17,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:17,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:22:17,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569701265] [2024-06-27 18:22:17,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:17,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:22:17,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:17,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:22:17,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:22:17,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:22:17,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 322 transitions, 4533 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:17,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:17,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:22:17,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:19,691 INFO L124 PetriNetUnfolderBase]: 6900/11407 cut-off events. [2024-06-27 18:22:19,691 INFO L125 PetriNetUnfolderBase]: For 425520/425520 co-relation queries the response was YES. [2024-06-27 18:22:19,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78679 conditions, 11407 events. 6900/11407 cut-off events. For 425520/425520 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 81353 event pairs, 2006 based on Foata normal form. 2/11137 useless extension candidates. Maximal degree in co-relation 78574. Up to 9961 conditions per place. [2024-06-27 18:22:19,850 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 305 selfloop transitions, 40 changer transitions 0/354 dead transitions. [2024-06-27 18:22:19,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 354 transitions, 5503 flow [2024-06-27 18:22:19,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:22:19,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:22:19,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-27 18:22:19,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49544072948328266 [2024-06-27 18:22:19,852 INFO L175 Difference]: Start difference. First operand has 255 places, 322 transitions, 4533 flow. Second operand 7 states and 163 transitions. [2024-06-27 18:22:19,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 354 transitions, 5503 flow [2024-06-27 18:22:20,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 354 transitions, 5394 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 18:22:20,571 INFO L231 Difference]: Finished difference. Result has 255 places, 325 transitions, 4558 flow [2024-06-27 18:22:20,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4424, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4558, PETRI_PLACES=255, PETRI_TRANSITIONS=325} [2024-06-27 18:22:20,571 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 202 predicate places. [2024-06-27 18:22:20,571 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 325 transitions, 4558 flow [2024-06-27 18:22:20,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:20,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:20,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:20,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 18:22:20,572 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:22:20,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:20,572 INFO L85 PathProgramCache]: Analyzing trace with hash -805351111, now seen corresponding path program 3 times [2024-06-27 18:22:20,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:20,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140226220] [2024-06-27 18:22:20,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:20,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:20,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:21,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:21,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:21,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140226220] [2024-06-27 18:22:21,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140226220] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:21,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:21,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:22:21,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380673354] [2024-06-27 18:22:21,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:21,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:22:21,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:21,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:22:21,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:22:21,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:22:21,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 325 transitions, 4558 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:21,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:21,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:22:21,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:23,309 INFO L124 PetriNetUnfolderBase]: 6894/11405 cut-off events. [2024-06-27 18:22:23,309 INFO L125 PetriNetUnfolderBase]: For 428520/428520 co-relation queries the response was YES. [2024-06-27 18:22:23,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78374 conditions, 11405 events. 6894/11405 cut-off events. For 428520/428520 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 81380 event pairs, 2010 based on Foata normal form. 2/11133 useless extension candidates. Maximal degree in co-relation 78269. Up to 9956 conditions per place. [2024-06-27 18:22:23,449 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 303 selfloop transitions, 41 changer transitions 0/353 dead transitions. [2024-06-27 18:22:23,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 353 transitions, 5378 flow [2024-06-27 18:22:23,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:22:23,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:22:23,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2024-06-27 18:22:23,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-06-27 18:22:23,451 INFO L175 Difference]: Start difference. First operand has 255 places, 325 transitions, 4558 flow. Second operand 7 states and 161 transitions. [2024-06-27 18:22:23,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 353 transitions, 5378 flow [2024-06-27 18:22:24,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 353 transitions, 5248 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-27 18:22:24,157 INFO L231 Difference]: Finished difference. Result has 258 places, 325 transitions, 4516 flow [2024-06-27 18:22:24,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4428, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4516, PETRI_PLACES=258, PETRI_TRANSITIONS=325} [2024-06-27 18:22:24,158 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 205 predicate places. [2024-06-27 18:22:24,158 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 325 transitions, 4516 flow [2024-06-27 18:22:24,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:24,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:24,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:24,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 18:22:24,159 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:22:24,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:24,159 INFO L85 PathProgramCache]: Analyzing trace with hash -2057840314, now seen corresponding path program 1 times [2024-06-27 18:22:24,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:24,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667051712] [2024-06-27 18:22:24,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:24,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:24,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:24,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:24,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667051712] [2024-06-27 18:22:24,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667051712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:24,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:24,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:22:24,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203134869] [2024-06-27 18:22:24,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:24,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:22:24,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:24,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:22:24,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:22:24,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:22:24,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 325 transitions, 4516 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:24,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:24,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:22:24,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:26,766 INFO L124 PetriNetUnfolderBase]: 6572/11128 cut-off events. [2024-06-27 18:22:26,767 INFO L125 PetriNetUnfolderBase]: For 390655/390655 co-relation queries the response was YES. [2024-06-27 18:22:26,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75350 conditions, 11128 events. 6572/11128 cut-off events. For 390655/390655 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 81524 event pairs, 1771 based on Foata normal form. 1/10804 useless extension candidates. Maximal degree in co-relation 75244. Up to 9632 conditions per place. [2024-06-27 18:22:26,929 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 329 selfloop transitions, 15 changer transitions 0/358 dead transitions. [2024-06-27 18:22:26,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 358 transitions, 5344 flow [2024-06-27 18:22:26,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:22:26,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:22:26,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-27 18:22:26,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015197568389058 [2024-06-27 18:22:26,930 INFO L175 Difference]: Start difference. First operand has 258 places, 325 transitions, 4516 flow. Second operand 7 states and 165 transitions. [2024-06-27 18:22:26,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 358 transitions, 5344 flow [2024-06-27 18:22:27,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 358 transitions, 5266 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 18:22:27,762 INFO L231 Difference]: Finished difference. Result has 260 places, 328 transitions, 4528 flow [2024-06-27 18:22:27,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4438, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4528, PETRI_PLACES=260, PETRI_TRANSITIONS=328} [2024-06-27 18:22:27,763 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 207 predicate places. [2024-06-27 18:22:27,763 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 328 transitions, 4528 flow [2024-06-27 18:22:27,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:27,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:27,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:27,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 18:22:27,763 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:22:27,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:27,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1011341988, now seen corresponding path program 1 times [2024-06-27 18:22:27,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:27,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356219456] [2024-06-27 18:22:27,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:27,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:27,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:28,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:28,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:28,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356219456] [2024-06-27 18:22:28,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356219456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:28,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:28,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:22:28,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989452438] [2024-06-27 18:22:28,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:28,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:22:28,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:28,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:22:28,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:22:28,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:22:28,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 328 transitions, 4528 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:28,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:28,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:22:28,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:30,299 INFO L124 PetriNetUnfolderBase]: 6634/11230 cut-off events. [2024-06-27 18:22:30,300 INFO L125 PetriNetUnfolderBase]: For 403930/403930 co-relation queries the response was YES. [2024-06-27 18:22:30,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76507 conditions, 11230 events. 6634/11230 cut-off events. For 403930/403930 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 82304 event pairs, 1778 based on Foata normal form. 2/10904 useless extension candidates. Maximal degree in co-relation 76400. Up to 9653 conditions per place. [2024-06-27 18:22:30,466 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 328 selfloop transitions, 28 changer transitions 0/370 dead transitions. [2024-06-27 18:22:30,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 370 transitions, 5545 flow [2024-06-27 18:22:30,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:22:30,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:22:30,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-27 18:22:30,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.513677811550152 [2024-06-27 18:22:30,467 INFO L175 Difference]: Start difference. First operand has 260 places, 328 transitions, 4528 flow. Second operand 7 states and 169 transitions. [2024-06-27 18:22:30,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 370 transitions, 5545 flow [2024-06-27 18:22:31,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 370 transitions, 5477 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-27 18:22:31,286 INFO L231 Difference]: Finished difference. Result has 263 places, 340 transitions, 4664 flow [2024-06-27 18:22:31,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4460, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4664, PETRI_PLACES=263, PETRI_TRANSITIONS=340} [2024-06-27 18:22:31,287 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 210 predicate places. [2024-06-27 18:22:31,287 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 340 transitions, 4664 flow [2024-06-27 18:22:31,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:31,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:31,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:31,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 18:22:31,287 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:22:31,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:31,288 INFO L85 PathProgramCache]: Analyzing trace with hash -2057720344, now seen corresponding path program 2 times [2024-06-27 18:22:31,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:31,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401345033] [2024-06-27 18:22:31,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:31,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:31,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:31,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:31,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:31,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401345033] [2024-06-27 18:22:31,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401345033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:31,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:31,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:22:31,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634004438] [2024-06-27 18:22:31,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:31,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:22:31,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:31,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:22:31,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:22:32,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:22:32,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 340 transitions, 4664 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:32,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:32,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:22:32,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:34,221 INFO L124 PetriNetUnfolderBase]: 6664/11308 cut-off events. [2024-06-27 18:22:34,222 INFO L125 PetriNetUnfolderBase]: For 416084/416084 co-relation queries the response was YES. [2024-06-27 18:22:34,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78360 conditions, 11308 events. 6664/11308 cut-off events. For 416084/416084 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 83026 event pairs, 1779 based on Foata normal form. 1/10967 useless extension candidates. Maximal degree in co-relation 78251. Up to 9706 conditions per place. [2024-06-27 18:22:34,348 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 332 selfloop transitions, 28 changer transitions 0/374 dead transitions. [2024-06-27 18:22:34,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 374 transitions, 5694 flow [2024-06-27 18:22:34,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:22:34,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:22:34,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-27 18:22:34,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075987841945289 [2024-06-27 18:22:34,350 INFO L175 Difference]: Start difference. First operand has 263 places, 340 transitions, 4664 flow. Second operand 7 states and 167 transitions. [2024-06-27 18:22:34,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 374 transitions, 5694 flow [2024-06-27 18:22:35,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 374 transitions, 5648 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-06-27 18:22:35,089 INFO L231 Difference]: Finished difference. Result has 268 places, 346 transitions, 4798 flow [2024-06-27 18:22:35,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4618, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4798, PETRI_PLACES=268, PETRI_TRANSITIONS=346} [2024-06-27 18:22:35,090 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 215 predicate places. [2024-06-27 18:22:35,090 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 346 transitions, 4798 flow [2024-06-27 18:22:35,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:35,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:35,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:35,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 18:22:35,090 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:22:35,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:35,091 INFO L85 PathProgramCache]: Analyzing trace with hash -650816158, now seen corresponding path program 2 times [2024-06-27 18:22:35,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:35,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750495324] [2024-06-27 18:22:35,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:35,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:35,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:35,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:35,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:35,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750495324] [2024-06-27 18:22:35,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750495324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:35,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:35,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:22:35,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616674362] [2024-06-27 18:22:35,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:35,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:22:35,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:35,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:22:35,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:22:35,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:22:35,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 346 transitions, 4798 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:35,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:35,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:22:35,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:38,008 INFO L124 PetriNetUnfolderBase]: 6696/11241 cut-off events. [2024-06-27 18:22:38,009 INFO L125 PetriNetUnfolderBase]: For 435316/435316 co-relation queries the response was YES. [2024-06-27 18:22:38,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79242 conditions, 11241 events. 6696/11241 cut-off events. For 435316/435316 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 81659 event pairs, 1914 based on Foata normal form. 2/10965 useless extension candidates. Maximal degree in co-relation 79130. Up to 9758 conditions per place. [2024-06-27 18:22:38,241 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 336 selfloop transitions, 24 changer transitions 0/374 dead transitions. [2024-06-27 18:22:38,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 374 transitions, 5738 flow [2024-06-27 18:22:38,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:22:38,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:22:38,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-27 18:22:38,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49544072948328266 [2024-06-27 18:22:38,243 INFO L175 Difference]: Start difference. First operand has 268 places, 346 transitions, 4798 flow. Second operand 7 states and 163 transitions. [2024-06-27 18:22:38,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 374 transitions, 5738 flow [2024-06-27 18:22:39,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 374 transitions, 5666 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-06-27 18:22:39,144 INFO L231 Difference]: Finished difference. Result has 272 places, 349 transitions, 4814 flow [2024-06-27 18:22:39,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4726, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4814, PETRI_PLACES=272, PETRI_TRANSITIONS=349} [2024-06-27 18:22:39,160 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 219 predicate places. [2024-06-27 18:22:39,160 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 349 transitions, 4814 flow [2024-06-27 18:22:39,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:39,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:39,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:39,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 18:22:39,161 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:22:39,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:39,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1670166118, now seen corresponding path program 3 times [2024-06-27 18:22:39,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:39,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430004918] [2024-06-27 18:22:39,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:39,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:39,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:39,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:39,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:39,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430004918] [2024-06-27 18:22:39,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430004918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:39,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:39,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:22:39,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873727208] [2024-06-27 18:22:39,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:39,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:22:39,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:39,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:22:39,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:22:39,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:22:39,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 349 transitions, 4814 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:39,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:39,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:22:39,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:42,175 INFO L124 PetriNetUnfolderBase]: 6681/11220 cut-off events. [2024-06-27 18:22:42,175 INFO L125 PetriNetUnfolderBase]: For 439646/439646 co-relation queries the response was YES. [2024-06-27 18:22:42,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79073 conditions, 11220 events. 6681/11220 cut-off events. For 439646/439646 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 81557 event pairs, 1918 based on Foata normal form. 3/10945 useless extension candidates. Maximal degree in co-relation 78959. Up to 9771 conditions per place. [2024-06-27 18:22:42,409 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 337 selfloop transitions, 19 changer transitions 0/370 dead transitions. [2024-06-27 18:22:42,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 370 transitions, 5584 flow [2024-06-27 18:22:42,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:22:42,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:22:42,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-27 18:22:42,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48024316109422494 [2024-06-27 18:22:42,411 INFO L175 Difference]: Start difference. First operand has 272 places, 349 transitions, 4814 flow. Second operand 7 states and 158 transitions. [2024-06-27 18:22:42,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 370 transitions, 5584 flow [2024-06-27 18:22:43,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 370 transitions, 5491 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-27 18:22:43,555 INFO L231 Difference]: Finished difference. Result has 274 places, 349 transitions, 4766 flow [2024-06-27 18:22:43,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4721, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4766, PETRI_PLACES=274, PETRI_TRANSITIONS=349} [2024-06-27 18:22:43,555 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 221 predicate places. [2024-06-27 18:22:43,556 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 349 transitions, 4766 flow [2024-06-27 18:22:43,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:43,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:43,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:43,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 18:22:43,556 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:22:43,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:43,557 INFO L85 PathProgramCache]: Analyzing trace with hash -805611294, now seen corresponding path program 3 times [2024-06-27 18:22:43,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:43,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463921943] [2024-06-27 18:22:43,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:43,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:43,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:44,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:44,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:44,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463921943] [2024-06-27 18:22:44,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463921943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:44,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:44,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:22:44,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041574598] [2024-06-27 18:22:44,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:44,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:22:44,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:44,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:22:44,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:22:44,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:22:44,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 349 transitions, 4766 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:44,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:44,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:22:44,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:46,999 INFO L124 PetriNetUnfolderBase]: 6678/11212 cut-off events. [2024-06-27 18:22:47,000 INFO L125 PetriNetUnfolderBase]: For 441334/441334 co-relation queries the response was YES. [2024-06-27 18:22:47,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78853 conditions, 11212 events. 6678/11212 cut-off events. For 441334/441334 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 81510 event pairs, 1914 based on Foata normal form. 1/10936 useless extension candidates. Maximal degree in co-relation 78739. Up to 9783 conditions per place. [2024-06-27 18:22:47,214 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 341 selfloop transitions, 16 changer transitions 0/371 dead transitions. [2024-06-27 18:22:47,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 371 transitions, 5548 flow [2024-06-27 18:22:47,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:22:47,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:22:47,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-27 18:22:47,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48024316109422494 [2024-06-27 18:22:47,216 INFO L175 Difference]: Start difference. First operand has 274 places, 349 transitions, 4766 flow. Second operand 7 states and 158 transitions. [2024-06-27 18:22:47,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 371 transitions, 5548 flow [2024-06-27 18:22:48,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 371 transitions, 5467 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-27 18:22:48,252 INFO L231 Difference]: Finished difference. Result has 275 places, 349 transitions, 4723 flow [2024-06-27 18:22:48,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4685, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4723, PETRI_PLACES=275, PETRI_TRANSITIONS=349} [2024-06-27 18:22:48,253 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 222 predicate places. [2024-06-27 18:22:48,253 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 349 transitions, 4723 flow [2024-06-27 18:22:48,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:48,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:48,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:48,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 18:22:48,254 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:22:48,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:48,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1849262999, now seen corresponding path program 1 times [2024-06-27 18:22:48,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:48,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425389830] [2024-06-27 18:22:48,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:48,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:49,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:49,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:49,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425389830] [2024-06-27 18:22:49,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425389830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:49,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:49,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:22:49,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32351894] [2024-06-27 18:22:49,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:49,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:22:49,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:49,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:22:49,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:22:49,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:22:49,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 349 transitions, 4723 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:49,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:49,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:22:49,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:52,029 INFO L124 PetriNetUnfolderBase]: 6940/11608 cut-off events. [2024-06-27 18:22:52,029 INFO L125 PetriNetUnfolderBase]: For 527779/527839 co-relation queries the response was YES. [2024-06-27 18:22:52,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83050 conditions, 11608 events. 6940/11608 cut-off events. For 527779/527839 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 83523 event pairs, 1523 based on Foata normal form. 12/11288 useless extension candidates. Maximal degree in co-relation 82935. Up to 9843 conditions per place. [2024-06-27 18:22:52,206 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 374 selfloop transitions, 22 changer transitions 0/415 dead transitions. [2024-06-27 18:22:52,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 415 transitions, 5791 flow [2024-06-27 18:22:52,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:22:52,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:22:52,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 245 transitions. [2024-06-27 18:22:52,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2024-06-27 18:22:52,208 INFO L175 Difference]: Start difference. First operand has 275 places, 349 transitions, 4723 flow. Second operand 10 states and 245 transitions. [2024-06-27 18:22:52,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 415 transitions, 5791 flow [2024-06-27 18:22:53,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 415 transitions, 5735 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 18:22:53,094 INFO L231 Difference]: Finished difference. Result has 280 places, 352 transitions, 4802 flow [2024-06-27 18:22:53,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4667, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4802, PETRI_PLACES=280, PETRI_TRANSITIONS=352} [2024-06-27 18:22:53,095 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 227 predicate places. [2024-06-27 18:22:53,095 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 352 transitions, 4802 flow [2024-06-27 18:22:53,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:53,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:53,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:53,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 18:22:53,095 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:22:53,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:53,096 INFO L85 PathProgramCache]: Analyzing trace with hash 328433623, now seen corresponding path program 2 times [2024-06-27 18:22:53,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:53,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70806035] [2024-06-27 18:22:53,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:53,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:53,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:54,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:54,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:54,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70806035] [2024-06-27 18:22:54,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70806035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:54,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:54,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:22:54,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222565692] [2024-06-27 18:22:54,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:54,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:22:54,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:54,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:22:54,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:22:54,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:22:54,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 352 transitions, 4802 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:54,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:54,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:22:54,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:56,902 INFO L124 PetriNetUnfolderBase]: 7021/11657 cut-off events. [2024-06-27 18:22:56,903 INFO L125 PetriNetUnfolderBase]: For 553208/553260 co-relation queries the response was YES. [2024-06-27 18:22:57,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85123 conditions, 11657 events. 7021/11657 cut-off events. For 553208/553260 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 83935 event pairs, 1872 based on Foata normal form. 12/11381 useless extension candidates. Maximal degree in co-relation 85006. Up to 9945 conditions per place. [2024-06-27 18:22:57,094 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 377 selfloop transitions, 25 changer transitions 0/421 dead transitions. [2024-06-27 18:22:57,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 421 transitions, 5912 flow [2024-06-27 18:22:57,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:22:57,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:22:57,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 248 transitions. [2024-06-27 18:22:57,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5276595744680851 [2024-06-27 18:22:57,096 INFO L175 Difference]: Start difference. First operand has 280 places, 352 transitions, 4802 flow. Second operand 10 states and 248 transitions. [2024-06-27 18:22:57,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 421 transitions, 5912 flow [2024-06-27 18:22:58,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 421 transitions, 5818 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-27 18:22:58,134 INFO L231 Difference]: Finished difference. Result has 284 places, 356 transitions, 4859 flow [2024-06-27 18:22:58,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4708, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4859, PETRI_PLACES=284, PETRI_TRANSITIONS=356} [2024-06-27 18:22:58,135 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 231 predicate places. [2024-06-27 18:22:58,135 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 356 transitions, 4859 flow [2024-06-27 18:22:58,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:58,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:58,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:58,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 18:22:58,135 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:22:58,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:58,136 INFO L85 PathProgramCache]: Analyzing trace with hash 333940153, now seen corresponding path program 3 times [2024-06-27 18:22:58,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:58,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166213043] [2024-06-27 18:22:58,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:58,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:58,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:59,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:59,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:59,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166213043] [2024-06-27 18:22:59,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166213043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:59,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:59,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:22:59,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510279913] [2024-06-27 18:22:59,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:59,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:22:59,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:59,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:22:59,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:22:59,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:22:59,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 356 transitions, 4859 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:59,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:59,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:22:59,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:02,059 INFO L124 PetriNetUnfolderBase]: 7114/11840 cut-off events. [2024-06-27 18:23:02,059 INFO L125 PetriNetUnfolderBase]: For 575485/575537 co-relation queries the response was YES. [2024-06-27 18:23:02,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86611 conditions, 11840 events. 7114/11840 cut-off events. For 575485/575537 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 85637 event pairs, 1931 based on Foata normal form. 12/11555 useless extension candidates. Maximal degree in co-relation 86492. Up to 10169 conditions per place. [2024-06-27 18:23:02,238 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 380 selfloop transitions, 23 changer transitions 0/422 dead transitions. [2024-06-27 18:23:02,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 422 transitions, 5956 flow [2024-06-27 18:23:02,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:23:02,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:23:02,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 246 transitions. [2024-06-27 18:23:02,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234042553191489 [2024-06-27 18:23:02,240 INFO L175 Difference]: Start difference. First operand has 284 places, 356 transitions, 4859 flow. Second operand 10 states and 246 transitions. [2024-06-27 18:23:02,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 422 transitions, 5956 flow [2024-06-27 18:23:03,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 422 transitions, 5850 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-27 18:23:03,648 INFO L231 Difference]: Finished difference. Result has 289 places, 359 transitions, 4901 flow [2024-06-27 18:23:03,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4755, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4901, PETRI_PLACES=289, PETRI_TRANSITIONS=359} [2024-06-27 18:23:03,649 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 236 predicate places. [2024-06-27 18:23:03,649 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 359 transitions, 4901 flow [2024-06-27 18:23:03,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:03,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:03,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:03,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 18:23:03,650 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:23:03,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:03,650 INFO L85 PathProgramCache]: Analyzing trace with hash 198754901, now seen corresponding path program 4 times [2024-06-27 18:23:03,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:03,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724751010] [2024-06-27 18:23:03,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:03,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:03,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:04,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:23:04,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:04,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724751010] [2024-06-27 18:23:04,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724751010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:04,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:04,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:23:04,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056212317] [2024-06-27 18:23:04,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:04,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:23:04,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:04,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:23:04,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:23:05,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:23:05,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 359 transitions, 4901 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:05,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:05,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:23:05,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:08,480 INFO L124 PetriNetUnfolderBase]: 7207/12011 cut-off events. [2024-06-27 18:23:08,480 INFO L125 PetriNetUnfolderBase]: For 591441/591493 co-relation queries the response was YES. [2024-06-27 18:23:08,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87743 conditions, 12011 events. 7207/12011 cut-off events. For 591441/591493 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 87221 event pairs, 1960 based on Foata normal form. 12/11720 useless extension candidates. Maximal degree in co-relation 87621. Up to 10284 conditions per place. [2024-06-27 18:23:08,694 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 376 selfloop transitions, 27 changer transitions 0/422 dead transitions. [2024-06-27 18:23:08,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 422 transitions, 5989 flow [2024-06-27 18:23:08,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:23:08,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:23:08,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 246 transitions. [2024-06-27 18:23:08,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234042553191489 [2024-06-27 18:23:08,696 INFO L175 Difference]: Start difference. First operand has 289 places, 359 transitions, 4901 flow. Second operand 10 states and 246 transitions. [2024-06-27 18:23:08,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 422 transitions, 5989 flow [2024-06-27 18:23:10,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 422 transitions, 5902 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-27 18:23:10,570 INFO L231 Difference]: Finished difference. Result has 293 places, 360 transitions, 4944 flow [2024-06-27 18:23:10,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4814, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4944, PETRI_PLACES=293, PETRI_TRANSITIONS=360} [2024-06-27 18:23:10,571 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 240 predicate places. [2024-06-27 18:23:10,571 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 360 transitions, 4944 flow [2024-06-27 18:23:10,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:10,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:10,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:10,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 18:23:10,572 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:23:10,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:10,572 INFO L85 PathProgramCache]: Analyzing trace with hash -691039, now seen corresponding path program 5 times [2024-06-27 18:23:10,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:10,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099425254] [2024-06-27 18:23:10,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:10,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:10,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:11,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:23:11,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:11,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099425254] [2024-06-27 18:23:11,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099425254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:11,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:11,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:23:11,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114302128] [2024-06-27 18:23:11,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:11,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:23:11,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:11,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:23:11,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:23:11,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:23:11,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 360 transitions, 4944 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:11,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:11,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:23:11,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:15,090 INFO L124 PetriNetUnfolderBase]: 7300/12154 cut-off events. [2024-06-27 18:23:15,090 INFO L125 PetriNetUnfolderBase]: For 609450/609502 co-relation queries the response was YES. [2024-06-27 18:23:15,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88977 conditions, 12154 events. 7300/12154 cut-off events. For 609450/609502 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 88270 event pairs, 1960 based on Foata normal form. 12/11865 useless extension candidates. Maximal degree in co-relation 88854. Up to 10320 conditions per place. [2024-06-27 18:23:15,312 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 376 selfloop transitions, 32 changer transitions 0/427 dead transitions. [2024-06-27 18:23:15,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 427 transitions, 6076 flow [2024-06-27 18:23:15,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:23:15,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:23:15,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 247 transitions. [2024-06-27 18:23:15,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5255319148936171 [2024-06-27 18:23:15,315 INFO L175 Difference]: Start difference. First operand has 293 places, 360 transitions, 4944 flow. Second operand 10 states and 247 transitions. [2024-06-27 18:23:15,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 427 transitions, 6076 flow [2024-06-27 18:23:16,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 427 transitions, 5977 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-27 18:23:16,910 INFO L231 Difference]: Finished difference. Result has 297 places, 364 transitions, 5028 flow [2024-06-27 18:23:16,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4845, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5028, PETRI_PLACES=297, PETRI_TRANSITIONS=364} [2024-06-27 18:23:16,911 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 244 predicate places. [2024-06-27 18:23:16,911 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 364 transitions, 5028 flow [2024-06-27 18:23:16,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:16,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:16,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:16,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 18:23:16,912 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:23:16,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:16,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1771033954, now seen corresponding path program 1 times [2024-06-27 18:23:16,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:16,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077187666] [2024-06-27 18:23:16,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:16,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:16,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:17,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:23:17,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:17,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077187666] [2024-06-27 18:23:17,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077187666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:17,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:17,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:23:17,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919787125] [2024-06-27 18:23:17,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:17,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:23:17,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:17,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:23:17,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:23:17,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:23:17,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 364 transitions, 5028 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:17,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:17,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:23:17,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:20,520 INFO L124 PetriNetUnfolderBase]: 7629/12666 cut-off events. [2024-06-27 18:23:20,521 INFO L125 PetriNetUnfolderBase]: For 601647/601647 co-relation queries the response was YES. [2024-06-27 18:23:20,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91228 conditions, 12666 events. 7629/12666 cut-off events. For 601647/601647 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 91887 event pairs, 2183 based on Foata normal form. 2/12362 useless extension candidates. Maximal degree in co-relation 91103. Up to 11136 conditions per place. [2024-06-27 18:23:20,691 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 372 selfloop transitions, 29 changer transitions 0/410 dead transitions. [2024-06-27 18:23:20,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 410 transitions, 6263 flow [2024-06-27 18:23:20,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:23:20,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:23:20,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-27 18:23:20,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075987841945289 [2024-06-27 18:23:20,693 INFO L175 Difference]: Start difference. First operand has 297 places, 364 transitions, 5028 flow. Second operand 7 states and 167 transitions. [2024-06-27 18:23:20,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 410 transitions, 6263 flow [2024-06-27 18:23:21,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 410 transitions, 6131 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-27 18:23:21,778 INFO L231 Difference]: Finished difference. Result has 298 places, 376 transitions, 5169 flow [2024-06-27 18:23:21,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4896, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5169, PETRI_PLACES=298, PETRI_TRANSITIONS=376} [2024-06-27 18:23:21,778 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 245 predicate places. [2024-06-27 18:23:21,779 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 376 transitions, 5169 flow [2024-06-27 18:23:21,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:21,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:21,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:21,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 18:23:21,779 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:23:21,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:21,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1777670434, now seen corresponding path program 2 times [2024-06-27 18:23:21,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:21,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180077200] [2024-06-27 18:23:21,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:21,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:21,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:22,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:23:22,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:22,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180077200] [2024-06-27 18:23:22,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180077200] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:22,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:22,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:23:22,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963657225] [2024-06-27 18:23:22,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:22,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:23:22,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:22,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:23:22,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:23:22,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:23:22,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 376 transitions, 5169 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:22,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:22,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:23:22,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:26,374 INFO L124 PetriNetUnfolderBase]: 7663/12736 cut-off events. [2024-06-27 18:23:26,374 INFO L125 PetriNetUnfolderBase]: For 609059/609059 co-relation queries the response was YES. [2024-06-27 18:23:26,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92392 conditions, 12736 events. 7663/12736 cut-off events. For 609059/609059 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 92723 event pairs, 2197 based on Foata normal form. 2/12428 useless extension candidates. Maximal degree in co-relation 92265. Up to 11249 conditions per place. [2024-06-27 18:23:26,619 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 375 selfloop transitions, 24 changer transitions 0/408 dead transitions. [2024-06-27 18:23:26,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 408 transitions, 6161 flow [2024-06-27 18:23:26,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:23:26,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:23:26,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-27 18:23:26,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48632218844984804 [2024-06-27 18:23:26,621 INFO L175 Difference]: Start difference. First operand has 298 places, 376 transitions, 5169 flow. Second operand 7 states and 160 transitions. [2024-06-27 18:23:26,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 408 transitions, 6161 flow [2024-06-27 18:23:28,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 408 transitions, 6011 flow, removed 70 selfloop flow, removed 2 redundant places. [2024-06-27 18:23:28,449 INFO L231 Difference]: Finished difference. Result has 303 places, 381 transitions, 5181 flow [2024-06-27 18:23:28,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5065, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5181, PETRI_PLACES=303, PETRI_TRANSITIONS=381} [2024-06-27 18:23:28,449 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 250 predicate places. [2024-06-27 18:23:28,450 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 381 transitions, 5181 flow [2024-06-27 18:23:28,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:28,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:28,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:28,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 18:23:28,450 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:23:28,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:28,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1777679331, now seen corresponding path program 1 times [2024-06-27 18:23:28,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:28,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995823762] [2024-06-27 18:23:28,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:28,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:28,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:29,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:23:29,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:29,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995823762] [2024-06-27 18:23:29,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995823762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:29,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:29,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:23:29,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885838527] [2024-06-27 18:23:29,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:29,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:23:29,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:29,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:23:29,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:23:29,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:23:29,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 381 transitions, 5181 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:29,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:29,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:23:29,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:32,500 INFO L124 PetriNetUnfolderBase]: 7731/12781 cut-off events. [2024-06-27 18:23:32,500 INFO L125 PetriNetUnfolderBase]: For 624353/624353 co-relation queries the response was YES. [2024-06-27 18:23:32,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92820 conditions, 12781 events. 7731/12781 cut-off events. For 624353/624353 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 92372 event pairs, 2136 based on Foata normal form. 4/12485 useless extension candidates. Maximal degree in co-relation 92691. Up to 11034 conditions per place. [2024-06-27 18:23:32,727 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 370 selfloop transitions, 53 changer transitions 0/432 dead transitions. [2024-06-27 18:23:32,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 432 transitions, 6499 flow [2024-06-27 18:23:32,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:23:32,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:23:32,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-27 18:23:32,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5159574468085106 [2024-06-27 18:23:32,729 INFO L175 Difference]: Start difference. First operand has 303 places, 381 transitions, 5181 flow. Second operand 8 states and 194 transitions. [2024-06-27 18:23:32,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 432 transitions, 6499 flow [2024-06-27 18:23:34,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 432 transitions, 6429 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-27 18:23:34,098 INFO L231 Difference]: Finished difference. Result has 307 places, 387 transitions, 5337 flow [2024-06-27 18:23:34,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5111, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5337, PETRI_PLACES=307, PETRI_TRANSITIONS=387} [2024-06-27 18:23:34,110 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 254 predicate places. [2024-06-27 18:23:34,111 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 387 transitions, 5337 flow [2024-06-27 18:23:34,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:34,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:34,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:34,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 18:23:34,112 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:23:34,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:34,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1446730163, now seen corresponding path program 6 times [2024-06-27 18:23:34,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:34,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803693063] [2024-06-27 18:23:34,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:34,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:35,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:23:35,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:35,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803693063] [2024-06-27 18:23:35,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803693063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:35,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:35,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:23:35,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084375618] [2024-06-27 18:23:35,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:35,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:23:35,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:35,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:23:35,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:23:35,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:23:35,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 387 transitions, 5337 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:35,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:35,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:23:35,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:38,572 INFO L124 PetriNetUnfolderBase]: 7578/12666 cut-off events. [2024-06-27 18:23:38,573 INFO L125 PetriNetUnfolderBase]: For 669655/669745 co-relation queries the response was YES. [2024-06-27 18:23:38,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94556 conditions, 12666 events. 7578/12666 cut-off events. For 669655/669745 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 92704 event pairs, 1835 based on Foata normal form. 24/12320 useless extension candidates. Maximal degree in co-relation 94426. Up to 10663 conditions per place. [2024-06-27 18:23:38,758 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 376 selfloop transitions, 49 changer transitions 0/449 dead transitions. [2024-06-27 18:23:38,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 449 transitions, 6491 flow [2024-06-27 18:23:38,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:23:38,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:23:38,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 247 transitions. [2024-06-27 18:23:38,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5255319148936171 [2024-06-27 18:23:38,759 INFO L175 Difference]: Start difference. First operand has 307 places, 387 transitions, 5337 flow. Second operand 10 states and 247 transitions. [2024-06-27 18:23:38,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 449 transitions, 6491 flow [2024-06-27 18:23:40,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 449 transitions, 6410 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-27 18:23:40,130 INFO L231 Difference]: Finished difference. Result has 313 places, 388 transitions, 5434 flow [2024-06-27 18:23:40,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5256, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5434, PETRI_PLACES=313, PETRI_TRANSITIONS=388} [2024-06-27 18:23:40,131 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 260 predicate places. [2024-06-27 18:23:40,131 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 388 transitions, 5434 flow [2024-06-27 18:23:40,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:40,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:40,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:40,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 18:23:40,132 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:23:40,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:40,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1433697303, now seen corresponding path program 7 times [2024-06-27 18:23:40,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:40,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059924376] [2024-06-27 18:23:40,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:40,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:40,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:41,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:23:41,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:41,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059924376] [2024-06-27 18:23:41,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059924376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:41,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:41,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:23:41,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369203159] [2024-06-27 18:23:41,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:41,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:23:41,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:41,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:23:41,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:23:41,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:23:41,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 388 transitions, 5434 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:41,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:41,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:23:41,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand