./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe006_power.opt-thin000_power.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/protection/safe006_power.opt-thin000_power.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/safe006_power.opt-thin000_power.opt.i ./goblint.2024-06-19_11-23-25.files/protection/safe006_power.opt-thin000_power.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 20:57:39,822 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 20:57:39,883 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 20:57:39,889 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 20:57:39,889 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 20:57:39,911 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 20:57:39,912 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 20:57:39,912 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 20:57:39,913 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 20:57:39,917 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 20:57:39,917 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 20:57:39,917 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 20:57:39,918 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 20:57:39,919 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 20:57:39,919 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 20:57:39,920 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 20:57:39,920 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 20:57:39,920 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 20:57:39,920 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 20:57:39,920 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 20:57:39,921 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 20:57:39,921 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 20:57:39,921 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 20:57:39,921 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 20:57:39,922 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 20:57:39,922 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 20:57:39,922 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 20:57:39,922 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 20:57:39,923 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 20:57:39,923 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 20:57:39,924 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 20:57:39,924 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 20:57:39,924 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 20:57:39,924 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 20:57:39,924 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 20:57:39,925 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 20:57:39,925 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 20:57:39,925 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 20:57:39,925 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 20:57:39,925 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 20:57:39,925 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 20:57:39,926 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 20:57:39,926 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 20:57:39,926 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 20:57:40,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 20:57:40,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 20:57:40,109 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 20:57:40,110 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 20:57:40,110 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 20:57:40,111 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe006_power.opt-thin000_power.opt.i [2024-06-27 20:57:41,125 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 20:57:41,363 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 20:57:41,365 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe006_power.opt-thin000_power.opt.i [2024-06-27 20:57:41,387 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51f173057/fc1a81a3592a43a6b27f446738ebc400/FLAG3a8774cfa [2024-06-27 20:57:41,400 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51f173057/fc1a81a3592a43a6b27f446738ebc400 [2024-06-27 20:57:41,402 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 20:57:41,402 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 20:57:41,403 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/safe006_power.opt-thin000_power.opt.yml/witness.yml [2024-06-27 20:57:41,569 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 20:57:41,571 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 20:57:41,572 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 20:57:41,572 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 20:57:41,576 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 20:57:41,576 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 08:57:41" (1/2) ... [2024-06-27 20:57:41,577 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67da9606 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:57:41, skipping insertion in model container [2024-06-27 20:57:41,577 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 08:57:41" (1/2) ... [2024-06-27 20:57:41,578 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@503206ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:57:41, skipping insertion in model container [2024-06-27 20:57:41,578 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:57:41" (2/2) ... [2024-06-27 20:57:41,579 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67da9606 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:57:41, skipping insertion in model container [2024-06-27 20:57:41,579 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:57:41" (2/2) ... [2024-06-27 20:57:41,579 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 20:57:41,642 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 20:57:41,643 INFO L97 edCorrectnessWitness]: Location invariant before [L829-L829] (((((((((((((((((((((((((((! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1)) && (! multithreaded || __unbuffered_p1_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p1_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p1_EAX$w_buff1 == 0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff0 == 0)) && (! multithreaded || (__unbuffered_p1_EAX$read_delayed_var == 0 || (__unbuffered_p1_EAX$read_delayed_var == & x && (*__unbuffered_p1_EAX$read_delayed_var == 0 || *__unbuffered_p1_EAX$read_delayed_var == 1))))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || __unbuffered_p1_EAX$mem_tmp == 0) [2024-06-27 20:57:41,643 INFO L97 edCorrectnessWitness]: Location invariant before [L828-L828] (((((((((((((((((((((((((((! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1)) && (! multithreaded || __unbuffered_p1_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p1_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p1_EAX$w_buff1 == 0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff0 == 0)) && (! multithreaded || (__unbuffered_p1_EAX$read_delayed_var == 0 || (__unbuffered_p1_EAX$read_delayed_var == & x && (*__unbuffered_p1_EAX$read_delayed_var == 0 || *__unbuffered_p1_EAX$read_delayed_var == 1))))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || __unbuffered_p1_EAX$mem_tmp == 0) [2024-06-27 20:57:41,643 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 20:57:41,643 INFO L106 edCorrectnessWitness]: ghost_update [L826-L826] multithreaded = 1; [2024-06-27 20:57:41,684 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 20:57:41,938 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 20:57:41,952 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 20:57:42,025 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 20:57:42,050 INFO L206 MainTranslator]: Completed translation [2024-06-27 20:57:42,051 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:57:42 WrapperNode [2024-06-27 20:57:42,051 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 20:57:42,051 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 20:57:42,052 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 20:57:42,052 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 20:57:42,057 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:57:42" (1/1) ... [2024-06-27 20:57:42,070 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:57:42" (1/1) ... [2024-06-27 20:57:42,094 INFO L138 Inliner]: procedures = 174, calls = 59, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 191 [2024-06-27 20:57:42,094 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 20:57:42,095 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 20:57:42,095 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 20:57:42,095 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 20:57:42,103 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:57:42" (1/1) ... [2024-06-27 20:57:42,103 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:57:42" (1/1) ... [2024-06-27 20:57:42,106 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:57:42" (1/1) ... [2024-06-27 20:57:42,123 INFO L175 MemorySlicer]: Split 26 memory accesses to 2 slices as follows [2, 24]. 92 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 5 writes are split as follows [0, 5]. [2024-06-27 20:57:42,127 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:57:42" (1/1) ... [2024-06-27 20:57:42,127 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:57:42" (1/1) ... [2024-06-27 20:57:42,134 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:57:42" (1/1) ... [2024-06-27 20:57:42,143 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:57:42" (1/1) ... [2024-06-27 20:57:42,146 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:57:42" (1/1) ... [2024-06-27 20:57:42,149 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:57:42" (1/1) ... [2024-06-27 20:57:42,152 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 20:57:42,153 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 20:57:42,153 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 20:57:42,153 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 20:57:42,154 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:57:42" (1/1) ... [2024-06-27 20:57:42,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 20:57:42,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 20:57:42,199 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 20:57:42,207 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 20:57:42,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 20:57:42,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 20:57:42,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 20:57:42,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 20:57:42,231 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 20:57:42,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 20:57:42,231 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 20:57:42,231 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 20:57:42,231 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 20:57:42,231 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 20:57:42,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 20:57:42,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 20:57:42,232 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 20:57:42,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 20:57:42,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 20:57:42,234 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 20:57:42,369 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 20:57:42,371 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 20:57:42,738 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 20:57:42,740 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 20:57:43,018 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 20:57:43,019 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 20:57:43,019 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 08:57:43 BoogieIcfgContainer [2024-06-27 20:57:43,019 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 20:57:43,021 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 20:57:43,021 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 20:57:43,024 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 20:57:43,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 08:57:41" (1/4) ... [2024-06-27 20:57:43,025 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f8a9e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 08:57:43, skipping insertion in model container [2024-06-27 20:57:43,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:57:41" (2/4) ... [2024-06-27 20:57:43,025 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f8a9e2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 08:57:43, skipping insertion in model container [2024-06-27 20:57:43,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:57:42" (3/4) ... [2024-06-27 20:57:43,026 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f8a9e2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 08:57:43, skipping insertion in model container [2024-06-27 20:57:43,026 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 08:57:43" (4/4) ... [2024-06-27 20:57:43,027 INFO L112 eAbstractionObserver]: Analyzing ICFG safe006_power.opt-thin000_power.opt.i [2024-06-27 20:57:43,041 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 20:57:43,041 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-27 20:57:43,041 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 20:57:43,087 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 20:57:43,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 30 transitions, 68 flow [2024-06-27 20:57:43,141 INFO L124 PetriNetUnfolderBase]: 0/28 cut-off events. [2024-06-27 20:57:43,142 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 20:57:43,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 28 events. 0/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 33 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 20:57:43,143 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 30 transitions, 68 flow [2024-06-27 20:57:43,146 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 22 transitions, 50 flow [2024-06-27 20:57:43,157 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 20:57:43,165 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;@1c9cc21d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 20:57:43,165 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 20:57:43,169 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 20:57:43,169 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-27 20:57:43,170 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 20:57:43,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:57:43,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 20:57:43,171 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:57:43,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:57:43,216 INFO L85 PathProgramCache]: Analyzing trace with hash 673844815, now seen corresponding path program 1 times [2024-06-27 20:57:43,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:57:43,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030152424] [2024-06-27 20:57:43,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:57:43,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:57:43,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:57:44,365 INFO 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 20:57:44,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:57:44,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030152424] [2024-06-27 20:57:44,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030152424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:57:44,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:57:44,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 20:57:44,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021907838] [2024-06-27 20:57:44,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:57:44,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 20:57:44,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:57:44,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 20:57:44,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 20:57:44,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 20:57:44,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states 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 20:57:44,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:57:44,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 20:57:44,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:57:44,580 INFO L124 PetriNetUnfolderBase]: 135/253 cut-off events. [2024-06-27 20:57:44,580 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-27 20:57:44,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518 conditions, 253 events. 135/253 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 869 event pairs, 75 based on Foata normal form. 1/248 useless extension candidates. Maximal degree in co-relation 507. Up to 243 conditions per place. [2024-06-27 20:57:44,585 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 22 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-27 20:57:44,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 29 transitions, 117 flow [2024-06-27 20:57:44,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 20:57:44,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 20:57:44,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 45 transitions. [2024-06-27 20:57:44,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 20:57:44,596 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 50 flow. Second operand 3 states and 45 transitions. [2024-06-27 20:57:44,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 29 transitions, 117 flow [2024-06-27 20:57:44,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 29 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 20:57:44,600 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 69 flow [2024-06-27 20:57:44,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2024-06-27 20:57:44,605 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2024-06-27 20:57:44,605 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 69 flow [2024-06-27 20:57:44,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states 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 20:57:44,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:57:44,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:57:44,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 20:57:44,606 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:57:44,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:57:44,607 INFO L85 PathProgramCache]: Analyzing trace with hash -165194306, now seen corresponding path program 1 times [2024-06-27 20:57:44,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:57:44,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048783948] [2024-06-27 20:57:44,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:57:44,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:57:44,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:57:45,629 INFO 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 20:57:45,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:57:45,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048783948] [2024-06-27 20:57:45,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048783948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:57:45,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:57:45,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 20:57:45,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431840459] [2024-06-27 20:57:45,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:57:45,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 20:57:45,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:57:45,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 20:57:45,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 20:57:45,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:57:45,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 69 flow. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states 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 20:57:45,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:57:45,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:57:45,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:57:45,787 INFO L124 PetriNetUnfolderBase]: 161/298 cut-off events. [2024-06-27 20:57:45,787 INFO L125 PetriNetUnfolderBase]: For 57/60 co-relation queries the response was YES. [2024-06-27 20:57:45,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 693 conditions, 298 events. 161/298 cut-off events. For 57/60 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1028 event pairs, 66 based on Foata normal form. 4/300 useless extension candidates. Maximal degree in co-relation 681. Up to 266 conditions per place. [2024-06-27 20:57:45,789 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 29 selfloop transitions, 5 changer transitions 0/37 dead transitions. [2024-06-27 20:57:45,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 37 transitions, 169 flow [2024-06-27 20:57:45,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 20:57:45,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 20:57:45,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 56 transitions. [2024-06-27 20:57:45,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-27 20:57:45,791 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 69 flow. Second operand 4 states and 56 transitions. [2024-06-27 20:57:45,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 37 transitions, 169 flow [2024-06-27 20:57:45,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 37 transitions, 166 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 20:57:45,793 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 93 flow [2024-06-27 20:57:45,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=93, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2024-06-27 20:57:45,793 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2024-06-27 20:57:45,794 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 93 flow [2024-06-27 20:57:45,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states 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 20:57:45,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:57:45,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:57:45,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 20:57:45,794 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:57:45,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:57:45,795 INFO L85 PathProgramCache]: Analyzing trace with hash -510568337, now seen corresponding path program 1 times [2024-06-27 20:57:45,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:57:45,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015391477] [2024-06-27 20:57:45,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:57:45,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:57:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:57:47,004 INFO 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 20:57:47,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:57:47,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015391477] [2024-06-27 20:57:47,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015391477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:57:47,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:57:47,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 20:57:47,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228473943] [2024-06-27 20:57:47,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:57:47,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 20:57:47,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:57:47,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 20:57:47,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 20:57:47,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:57:47,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 93 flow. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states 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 20:57:47,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:57:47,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:57:47,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:57:47,182 INFO L124 PetriNetUnfolderBase]: 158/293 cut-off events. [2024-06-27 20:57:47,183 INFO L125 PetriNetUnfolderBase]: For 173/179 co-relation queries the response was YES. [2024-06-27 20:57:47,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 755 conditions, 293 events. 158/293 cut-off events. For 173/179 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 994 event pairs, 48 based on Foata normal form. 6/297 useless extension candidates. Maximal degree in co-relation 741. Up to 250 conditions per place. [2024-06-27 20:57:47,185 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 34 selfloop transitions, 7 changer transitions 0/44 dead transitions. [2024-06-27 20:57:47,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 44 transitions, 221 flow [2024-06-27 20:57:47,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 20:57:47,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 20:57:47,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 68 transitions. [2024-06-27 20:57:47,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4533333333333333 [2024-06-27 20:57:47,187 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 93 flow. Second operand 5 states and 68 transitions. [2024-06-27 20:57:47,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 44 transitions, 221 flow [2024-06-27 20:57:47,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 44 transitions, 212 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 20:57:47,189 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 117 flow [2024-06-27 20:57:47,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=117, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2024-06-27 20:57:47,189 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 7 predicate places. [2024-06-27 20:57:47,190 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 117 flow [2024-06-27 20:57:47,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states 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 20:57:47,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:57:47,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:57:47,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 20:57:47,190 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:57:47,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:57:47,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1352251931, now seen corresponding path program 1 times [2024-06-27 20:57:47,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:57:47,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218544378] [2024-06-27 20:57:47,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:57:47,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:57:47,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:57:48,503 INFO 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 20:57:48,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:57:48,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218544378] [2024-06-27 20:57:48,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218544378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:57:48,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:57:48,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:57:48,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526886373] [2024-06-27 20:57:48,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:57:48,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:57:48,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:57:48,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:57:48,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:57:48,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:57:48,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 117 flow. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 20:57:48,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:57:48,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:57:48,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:57:48,743 INFO L124 PetriNetUnfolderBase]: 154/285 cut-off events. [2024-06-27 20:57:48,744 INFO L125 PetriNetUnfolderBase]: For 275/281 co-relation queries the response was YES. [2024-06-27 20:57:48,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 797 conditions, 285 events. 154/285 cut-off events. For 275/281 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 943 event pairs, 29 based on Foata normal form. 8/291 useless extension candidates. Maximal degree in co-relation 782. Up to 220 conditions per place. [2024-06-27 20:57:48,748 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 34 selfloop transitions, 8 changer transitions 0/45 dead transitions. [2024-06-27 20:57:48,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 45 transitions, 235 flow [2024-06-27 20:57:48,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:57:48,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:57:48,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 74 transitions. [2024-06-27 20:57:48,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-06-27 20:57:48,749 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 117 flow. Second operand 6 states and 74 transitions. [2024-06-27 20:57:48,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 45 transitions, 235 flow [2024-06-27 20:57:48,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 45 transitions, 220 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 20:57:48,751 INFO L231 Difference]: Finished difference. Result has 38 places, 27 transitions, 114 flow [2024-06-27 20:57:48,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=114, PETRI_PLACES=38, PETRI_TRANSITIONS=27} [2024-06-27 20:57:48,752 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2024-06-27 20:57:48,752 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 27 transitions, 114 flow [2024-06-27 20:57:48,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 20:57:48,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:57:48,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:57:48,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 20:57:48,753 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:57:48,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:57:48,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1404239725, now seen corresponding path program 1 times [2024-06-27 20:57:48,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:57:48,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537431012] [2024-06-27 20:57:48,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:57:48,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:57:48,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:57:50,086 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 20:57:50,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:57:50,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537431012] [2024-06-27 20:57:50,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537431012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:57:50,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:57:50,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 20:57:50,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863338512] [2024-06-27 20:57:50,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:57:50,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 20:57:50,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:57:50,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 20:57:50,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 20:57:50,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:57:50,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 27 transitions, 114 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:57:50,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:57:50,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:57:50,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:57:50,470 INFO L124 PetriNetUnfolderBase]: 123/232 cut-off events. [2024-06-27 20:57:50,471 INFO L125 PetriNetUnfolderBase]: For 320/320 co-relation queries the response was YES. [2024-06-27 20:57:50,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 702 conditions, 232 events. 123/232 cut-off events. For 320/320 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 774 event pairs, 34 based on Foata normal form. 1/231 useless extension candidates. Maximal degree in co-relation 685. Up to 219 conditions per place. [2024-06-27 20:57:50,472 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 26 selfloop transitions, 6 changer transitions 0/35 dead transitions. [2024-06-27 20:57:50,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 35 transitions, 198 flow [2024-06-27 20:57:50,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 20:57:50,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 20:57:50,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 54 transitions. [2024-06-27 20:57:50,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36 [2024-06-27 20:57:50,476 INFO L175 Difference]: Start difference. First operand has 38 places, 27 transitions, 114 flow. Second operand 5 states and 54 transitions. [2024-06-27 20:57:50,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 35 transitions, 198 flow [2024-06-27 20:57:50,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 35 transitions, 178 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 20:57:50,483 INFO L231 Difference]: Finished difference. Result has 39 places, 29 transitions, 121 flow [2024-06-27 20:57:50,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=39, PETRI_TRANSITIONS=29} [2024-06-27 20:57:50,486 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 10 predicate places. [2024-06-27 20:57:50,490 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 29 transitions, 121 flow [2024-06-27 20:57:50,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:57:50,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:57:50,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:57:50,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 20:57:50,491 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:57:50,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:57:50,492 INFO L85 PathProgramCache]: Analyzing trace with hash -581756927, now seen corresponding path program 1 times [2024-06-27 20:57:50,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:57:50,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113736163] [2024-06-27 20:57:50,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:57:50,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:57:50,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:57:52,026 INFO 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 20:57:52,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:57:52,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113736163] [2024-06-27 20:57:52,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113736163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:57:52,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:57:52,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:57:52,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012892131] [2024-06-27 20:57:52,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:57:52,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:57:52,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:57:52,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:57:52,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:57:52,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 20:57:52,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 121 flow. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states 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 20:57:52,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:57:52,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 20:57:52,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:57:52,525 INFO L124 PetriNetUnfolderBase]: 146/272 cut-off events. [2024-06-27 20:57:52,526 INFO L125 PetriNetUnfolderBase]: For 460/460 co-relation queries the response was YES. [2024-06-27 20:57:52,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 835 conditions, 272 events. 146/272 cut-off events. For 460/460 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 884 event pairs, 35 based on Foata normal form. 2/273 useless extension candidates. Maximal degree in co-relation 816. Up to 254 conditions per place. [2024-06-27 20:57:52,527 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 33 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2024-06-27 20:57:52,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 43 transitions, 241 flow [2024-06-27 20:57:52,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:57:52,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:57:52,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 58 transitions. [2024-06-27 20:57:52,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32222222222222224 [2024-06-27 20:57:52,529 INFO L175 Difference]: Start difference. First operand has 39 places, 29 transitions, 121 flow. Second operand 6 states and 58 transitions. [2024-06-27 20:57:52,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 43 transitions, 241 flow [2024-06-27 20:57:52,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 43 transitions, 228 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-27 20:57:52,531 INFO L231 Difference]: Finished difference. Result has 44 places, 35 transitions, 163 flow [2024-06-27 20:57:52,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=163, PETRI_PLACES=44, PETRI_TRANSITIONS=35} [2024-06-27 20:57:52,531 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2024-06-27 20:57:52,531 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 35 transitions, 163 flow [2024-06-27 20:57:52,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states 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 20:57:52,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:57:52,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:57:52,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 20:57:52,532 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:57:52,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:57:52,533 INFO L85 PathProgramCache]: Analyzing trace with hash -900104282, now seen corresponding path program 1 times [2024-06-27 20:57:52,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:57:52,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932861706] [2024-06-27 20:57:52,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:57:52,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:57:52,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:57:54,368 INFO 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 20:57:54,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:57:54,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932861706] [2024-06-27 20:57:54,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932861706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:57:54,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:57:54,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:57:54,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366949192] [2024-06-27 20:57:54,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:57:54,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:57:54,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:57:54,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:57:54,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:57:54,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 20:57:54,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 163 flow. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:57:54,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:57:54,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 20:57:54,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:57:54,649 INFO L124 PetriNetUnfolderBase]: 149/278 cut-off events. [2024-06-27 20:57:54,649 INFO L125 PetriNetUnfolderBase]: For 583/586 co-relation queries the response was YES. [2024-06-27 20:57:54,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 926 conditions, 278 events. 149/278 cut-off events. For 583/586 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 929 event pairs, 39 based on Foata normal form. 3/279 useless extension candidates. Maximal degree in co-relation 904. Up to 243 conditions per place. [2024-06-27 20:57:54,651 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 37 selfloop transitions, 9 changer transitions 0/48 dead transitions. [2024-06-27 20:57:54,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 48 transitions, 289 flow [2024-06-27 20:57:54,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:57:54,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:57:54,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 62 transitions. [2024-06-27 20:57:54,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34444444444444444 [2024-06-27 20:57:54,653 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 163 flow. Second operand 6 states and 62 transitions. [2024-06-27 20:57:54,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 48 transitions, 289 flow [2024-06-27 20:57:54,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 48 transitions, 287 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 20:57:54,655 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 196 flow [2024-06-27 20:57:54,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=196, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2024-06-27 20:57:54,655 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 20 predicate places. [2024-06-27 20:57:54,656 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 196 flow [2024-06-27 20:57:54,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:57:54,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:57:54,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:57:54,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 20:57:54,656 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:57:54,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:57:54,657 INFO L85 PathProgramCache]: Analyzing trace with hash -132545440, now seen corresponding path program 1 times [2024-06-27 20:57:54,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:57:54,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641486244] [2024-06-27 20:57:54,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:57:54,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:57:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:57:56,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:57:56,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:57:56,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641486244] [2024-06-27 20:57:56,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641486244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:57:56,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:57:56,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:57:56,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247610672] [2024-06-27 20:57:56,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:57:56,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:57:56,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:57:56,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:57:56,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:57:56,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 20:57:56,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 196 flow. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:57:56,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:57:56,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 20:57:56,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:57:56,735 INFO L124 PetriNetUnfolderBase]: 155/288 cut-off events. [2024-06-27 20:57:56,735 INFO L125 PetriNetUnfolderBase]: For 818/821 co-relation queries the response was YES. [2024-06-27 20:57:56,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1038 conditions, 288 events. 155/288 cut-off events. For 818/821 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 957 event pairs, 37 based on Foata normal form. 4/290 useless extension candidates. Maximal degree in co-relation 1013. Up to 247 conditions per place. [2024-06-27 20:57:56,737 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 33 selfloop transitions, 12 changer transitions 0/47 dead transitions. [2024-06-27 20:57:56,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 47 transitions, 314 flow [2024-06-27 20:57:56,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:57:56,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:57:56,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 61 transitions. [2024-06-27 20:57:56,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3388888888888889 [2024-06-27 20:57:56,739 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 196 flow. Second operand 6 states and 61 transitions. [2024-06-27 20:57:56,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 47 transitions, 314 flow [2024-06-27 20:57:56,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 47 transitions, 295 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 20:57:56,742 INFO L231 Difference]: Finished difference. Result has 51 places, 39 transitions, 223 flow [2024-06-27 20:57:56,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=223, PETRI_PLACES=51, PETRI_TRANSITIONS=39} [2024-06-27 20:57:56,744 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 22 predicate places. [2024-06-27 20:57:56,744 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 39 transitions, 223 flow [2024-06-27 20:57:56,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:57:56,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:57:56,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:57:56,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 20:57:56,745 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:57:56,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:57:56,745 INFO L85 PathProgramCache]: Analyzing trace with hash -132545626, now seen corresponding path program 2 times [2024-06-27 20:57:56,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:57:56,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110076219] [2024-06-27 20:57:56,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:57:56,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:57:56,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:57:58,408 INFO 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 20:57:58,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:57:58,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110076219] [2024-06-27 20:57:58,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110076219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:57:58,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:57:58,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:57:58,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490553262] [2024-06-27 20:57:58,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:57:58,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:57:58,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:57:58,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:57:58,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:57:58,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 20:57:58,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 39 transitions, 223 flow. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:57:58,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:57:58,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 20:57:58,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:57:58,933 INFO L124 PetriNetUnfolderBase]: 158/293 cut-off events. [2024-06-27 20:57:58,934 INFO L125 PetriNetUnfolderBase]: For 960/963 co-relation queries the response was YES. [2024-06-27 20:57:58,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1120 conditions, 293 events. 158/293 cut-off events. For 960/963 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 989 event pairs, 40 based on Foata normal form. 3/294 useless extension candidates. Maximal degree in co-relation 1094. Up to 257 conditions per place. [2024-06-27 20:57:58,936 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 38 selfloop transitions, 12 changer transitions 0/52 dead transitions. [2024-06-27 20:57:58,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 52 transitions, 379 flow [2024-06-27 20:57:58,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:57:58,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:57:58,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 67 transitions. [2024-06-27 20:57:58,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.319047619047619 [2024-06-27 20:57:58,937 INFO L175 Difference]: Start difference. First operand has 51 places, 39 transitions, 223 flow. Second operand 7 states and 67 transitions. [2024-06-27 20:57:58,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 52 transitions, 379 flow [2024-06-27 20:57:58,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 52 transitions, 351 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-27 20:57:58,939 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 255 flow [2024-06-27 20:57:58,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=255, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2024-06-27 20:57:58,940 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 26 predicate places. [2024-06-27 20:57:58,940 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 255 flow [2024-06-27 20:57:58,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:57:58,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:57:58,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:57:58,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 20:57:58,941 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:57:58,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:57:58,941 INFO L85 PathProgramCache]: Analyzing trace with hash -724399394, now seen corresponding path program 2 times [2024-06-27 20:57:58,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:57:58,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150993537] [2024-06-27 20:57:58,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:57:58,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:57:58,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:58:00,556 INFO 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 20:58:00,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:58:00,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150993537] [2024-06-27 20:58:00,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150993537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:58:00,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:58:00,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:58:00,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417985688] [2024-06-27 20:58:00,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:58:00,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:58:00,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:58:00,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:58:00,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:58:00,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 20:58:00,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 255 flow. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:58:00,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:58:00,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 20:58:00,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:58:01,185 INFO L124 PetriNetUnfolderBase]: 154/287 cut-off events. [2024-06-27 20:58:01,186 INFO L125 PetriNetUnfolderBase]: For 1000/1003 co-relation queries the response was YES. [2024-06-27 20:58:01,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1115 conditions, 287 events. 154/287 cut-off events. For 1000/1003 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 962 event pairs, 37 based on Foata normal form. 4/289 useless extension candidates. Maximal degree in co-relation 1087. Up to 238 conditions per place. [2024-06-27 20:58:01,188 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 39 selfloop transitions, 14 changer transitions 0/55 dead transitions. [2024-06-27 20:58:01,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 55 transitions, 399 flow [2024-06-27 20:58:01,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:58:01,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:58:01,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 69 transitions. [2024-06-27 20:58:01,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32857142857142857 [2024-06-27 20:58:01,190 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 255 flow. Second operand 7 states and 69 transitions. [2024-06-27 20:58:01,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 55 transitions, 399 flow [2024-06-27 20:58:01,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 55 transitions, 380 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 20:58:01,193 INFO L231 Difference]: Finished difference. Result has 59 places, 45 transitions, 285 flow [2024-06-27 20:58:01,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=285, PETRI_PLACES=59, PETRI_TRANSITIONS=45} [2024-06-27 20:58:01,194 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 30 predicate places. [2024-06-27 20:58:01,194 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 45 transitions, 285 flow [2024-06-27 20:58:01,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:58:01,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:58:01,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:58:01,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 20:58:01,195 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:58:01,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:58:01,196 INFO L85 PathProgramCache]: Analyzing trace with hash -724390466, now seen corresponding path program 1 times [2024-06-27 20:58:01,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:58:01,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347610812] [2024-06-27 20:58:01,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:58:01,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:58:01,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:58:03,289 INFO 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 20:58:03,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:58:03,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347610812] [2024-06-27 20:58:03,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347610812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:58:03,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:58:03,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:58:03,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795219604] [2024-06-27 20:58:03,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:58:03,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:58:03,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:58:03,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:58:03,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:58:03,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 20:58:03,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 45 transitions, 285 flow. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 20:58:03,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:58:03,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 20:58:03,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:58:03,829 INFO L124 PetriNetUnfolderBase]: 151/281 cut-off events. [2024-06-27 20:58:03,829 INFO L125 PetriNetUnfolderBase]: For 1149/1149 co-relation queries the response was YES. [2024-06-27 20:58:03,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1156 conditions, 281 events. 151/281 cut-off events. For 1149/1149 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 910 event pairs, 31 based on Foata normal form. 2/282 useless extension candidates. Maximal degree in co-relation 1126. Up to 257 conditions per place. [2024-06-27 20:58:03,831 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 44 selfloop transitions, 9 changer transitions 0/55 dead transitions. [2024-06-27 20:58:03,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 55 transitions, 415 flow [2024-06-27 20:58:03,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:58:03,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:58:03,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 64 transitions. [2024-06-27 20:58:03,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3047619047619048 [2024-06-27 20:58:03,833 INFO L175 Difference]: Start difference. First operand has 59 places, 45 transitions, 285 flow. Second operand 7 states and 64 transitions. [2024-06-27 20:58:03,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 55 transitions, 415 flow [2024-06-27 20:58:03,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 55 transitions, 382 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 20:58:03,836 INFO L231 Difference]: Finished difference. Result has 61 places, 45 transitions, 274 flow [2024-06-27 20:58:03,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=274, PETRI_PLACES=61, PETRI_TRANSITIONS=45} [2024-06-27 20:58:03,836 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 32 predicate places. [2024-06-27 20:58:03,836 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 45 transitions, 274 flow [2024-06-27 20:58:03,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 20:58:03,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:58:03,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:58:03,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 20:58:03,838 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:58:03,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:58:03,838 INFO L85 PathProgramCache]: Analyzing trace with hash -2133517743, now seen corresponding path program 1 times [2024-06-27 20:58:03,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:58:03,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45759181] [2024-06-27 20:58:03,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:58:03,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:58:03,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:58:06,608 INFO 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 20:58:06,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:58:06,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45759181] [2024-06-27 20:58:06,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45759181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:58:06,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:58:06,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:58:06,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711430637] [2024-06-27 20:58:06,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:58:06,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:58:06,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:58:06,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:58:06,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:58:06,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 20:58:06,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 45 transitions, 274 flow. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 20:58:06,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:58:06,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 20:58:06,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:58:07,038 INFO L124 PetriNetUnfolderBase]: 154/287 cut-off events. [2024-06-27 20:58:07,038 INFO L125 PetriNetUnfolderBase]: For 1345/1348 co-relation queries the response was YES. [2024-06-27 20:58:07,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1180 conditions, 287 events. 154/287 cut-off events. For 1345/1348 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 967 event pairs, 39 based on Foata normal form. 3/288 useless extension candidates. Maximal degree in co-relation 1149. Up to 221 conditions per place. [2024-06-27 20:58:07,040 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 46 selfloop transitions, 18 changer transitions 0/66 dead transitions. [2024-06-27 20:58:07,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 66 transitions, 486 flow [2024-06-27 20:58:07,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:58:07,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:58:07,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-27 20:58:07,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37142857142857144 [2024-06-27 20:58:07,042 INFO L175 Difference]: Start difference. First operand has 61 places, 45 transitions, 274 flow. Second operand 7 states and 78 transitions. [2024-06-27 20:58:07,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 66 transitions, 486 flow [2024-06-27 20:58:07,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 66 transitions, 463 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-27 20:58:07,045 INFO L231 Difference]: Finished difference. Result has 62 places, 49 transitions, 323 flow [2024-06-27 20:58:07,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=323, PETRI_PLACES=62, PETRI_TRANSITIONS=49} [2024-06-27 20:58:07,045 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 33 predicate places. [2024-06-27 20:58:07,045 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 49 transitions, 323 flow [2024-06-27 20:58:07,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 20:58:07,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:58:07,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:58:07,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 20:58:07,046 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:58:07,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:58:07,047 INFO L85 PathProgramCache]: Analyzing trace with hash 182335253, now seen corresponding path program 2 times [2024-06-27 20:58:07,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:58:07,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948807424] [2024-06-27 20:58:07,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:58:07,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:58:07,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:58:09,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:58:09,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:58:09,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948807424] [2024-06-27 20:58:09,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948807424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:58:09,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:58:09,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:58:09,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526734924] [2024-06-27 20:58:09,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:58:09,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:58:09,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:58:09,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:58:09,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:58:09,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 20:58:09,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 49 transitions, 323 flow. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 20:58:09,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:58:09,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 20:58:09,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:58:10,045 INFO L124 PetriNetUnfolderBase]: 157/292 cut-off events. [2024-06-27 20:58:10,045 INFO L125 PetriNetUnfolderBase]: For 1562/1565 co-relation queries the response was YES. [2024-06-27 20:58:10,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1258 conditions, 292 events. 157/292 cut-off events. For 1562/1565 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 978 event pairs, 37 based on Foata normal form. 3/293 useless extension candidates. Maximal degree in co-relation 1227. Up to 254 conditions per place. [2024-06-27 20:58:10,047 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 50 selfloop transitions, 11 changer transitions 0/63 dead transitions. [2024-06-27 20:58:10,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 63 transitions, 489 flow [2024-06-27 20:58:10,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:58:10,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:58:10,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 69 transitions. [2024-06-27 20:58:10,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32857142857142857 [2024-06-27 20:58:10,049 INFO L175 Difference]: Start difference. First operand has 62 places, 49 transitions, 323 flow. Second operand 7 states and 69 transitions. [2024-06-27 20:58:10,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 63 transitions, 489 flow [2024-06-27 20:58:10,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 63 transitions, 470 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-27 20:58:10,052 INFO L231 Difference]: Finished difference. Result has 66 places, 51 transitions, 351 flow [2024-06-27 20:58:10,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=351, PETRI_PLACES=66, PETRI_TRANSITIONS=51} [2024-06-27 20:58:10,053 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 37 predicate places. [2024-06-27 20:58:10,053 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 51 transitions, 351 flow [2024-06-27 20:58:10,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 20:58:10,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:58:10,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:58:10,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 20:58:10,053 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:58:10,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:58:10,054 INFO L85 PathProgramCache]: Analyzing trace with hash 182335408, now seen corresponding path program 1 times [2024-06-27 20:58:10,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:58:10,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680507734] [2024-06-27 20:58:10,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:58:10,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:58:10,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:58:11,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:58:11,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:58:11,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680507734] [2024-06-27 20:58:11,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680507734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:58:11,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:58:11,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:58:11,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773640284] [2024-06-27 20:58:11,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:58:11,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:58:11,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:58:11,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:58:11,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:58:11,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 20:58:11,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 51 transitions, 351 flow. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 20:58:11,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:58:11,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 20:58:11,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:58:12,347 INFO L124 PetriNetUnfolderBase]: 163/302 cut-off events. [2024-06-27 20:58:12,347 INFO L125 PetriNetUnfolderBase]: For 1923/1926 co-relation queries the response was YES. [2024-06-27 20:58:12,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1342 conditions, 302 events. 163/302 cut-off events. For 1923/1926 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1020 event pairs, 38 based on Foata normal form. 4/304 useless extension candidates. Maximal degree in co-relation 1309. Up to 261 conditions per place. [2024-06-27 20:58:12,349 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 53 selfloop transitions, 11 changer transitions 0/66 dead transitions. [2024-06-27 20:58:12,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 66 transitions, 525 flow [2024-06-27 20:58:12,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:58:12,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:58:12,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 70 transitions. [2024-06-27 20:58:12,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-27 20:58:12,351 INFO L175 Difference]: Start difference. First operand has 66 places, 51 transitions, 351 flow. Second operand 7 states and 70 transitions. [2024-06-27 20:58:12,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 66 transitions, 525 flow [2024-06-27 20:58:12,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 66 transitions, 498 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 20:58:12,354 INFO L231 Difference]: Finished difference. Result has 68 places, 53 transitions, 369 flow [2024-06-27 20:58:12,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=369, PETRI_PLACES=68, PETRI_TRANSITIONS=53} [2024-06-27 20:58:12,355 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 39 predicate places. [2024-06-27 20:58:12,355 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 53 transitions, 369 flow [2024-06-27 20:58:12,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 20:58:12,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:58:12,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:58:12,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 20:58:12,356 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:58:12,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:58:12,356 INFO L85 PathProgramCache]: Analyzing trace with hash 601644508, now seen corresponding path program 2 times [2024-06-27 20:58:12,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:58:12,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990483409] [2024-06-27 20:58:12,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:58:12,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:58:12,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:58:13,844 INFO 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 20:58:13,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:58:13,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990483409] [2024-06-27 20:58:13,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990483409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:58:13,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:58:13,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:58:13,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467720882] [2024-06-27 20:58:13,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:58:13,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:58:13,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:58:13,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:58:13,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:58:13,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 20:58:13,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 53 transitions, 369 flow. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 20:58:13,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:58:13,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 20:58:13,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:58:14,436 INFO L124 PetriNetUnfolderBase]: 169/312 cut-off events. [2024-06-27 20:58:14,436 INFO L125 PetriNetUnfolderBase]: For 2257/2260 co-relation queries the response was YES. [2024-06-27 20:58:14,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1435 conditions, 312 events. 169/312 cut-off events. For 2257/2260 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1069 event pairs, 33 based on Foata normal form. 4/314 useless extension candidates. Maximal degree in co-relation 1401. Up to 271 conditions per place. [2024-06-27 20:58:14,439 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 52 selfloop transitions, 13 changer transitions 0/67 dead transitions. [2024-06-27 20:58:14,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 67 transitions, 555 flow [2024-06-27 20:58:14,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:58:14,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:58:14,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 68 transitions. [2024-06-27 20:58:14,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3238095238095238 [2024-06-27 20:58:14,440 INFO L175 Difference]: Start difference. First operand has 68 places, 53 transitions, 369 flow. Second operand 7 states and 68 transitions. [2024-06-27 20:58:14,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 67 transitions, 555 flow [2024-06-27 20:58:14,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 67 transitions, 526 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 20:58:14,443 INFO L231 Difference]: Finished difference. Result has 71 places, 58 transitions, 420 flow [2024-06-27 20:58:14,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=420, PETRI_PLACES=71, PETRI_TRANSITIONS=58} [2024-06-27 20:58:14,445 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 42 predicate places. [2024-06-27 20:58:14,445 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 58 transitions, 420 flow [2024-06-27 20:58:14,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 20:58:14,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:58:14,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:58:14,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 20:58:14,446 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:58:14,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:58:14,446 INFO L85 PathProgramCache]: Analyzing trace with hash 186054323, now seen corresponding path program 3 times [2024-06-27 20:58:14,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:58:14,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836919731] [2024-06-27 20:58:14,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:58:14,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:58:14,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:58:16,033 INFO 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 20:58:16,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:58:16,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836919731] [2024-06-27 20:58:16,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836919731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:58:16,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:58:16,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:58:16,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888681118] [2024-06-27 20:58:16,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:58:16,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:58:16,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:58:16,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:58:16,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:58:16,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 20:58:16,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 58 transitions, 420 flow. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 20:58:16,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:58:16,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 20:58:16,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:58:16,443 INFO L124 PetriNetUnfolderBase]: 167/309 cut-off events. [2024-06-27 20:58:16,443 INFO L125 PetriNetUnfolderBase]: For 2429/2432 co-relation queries the response was YES. [2024-06-27 20:58:16,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1479 conditions, 309 events. 167/309 cut-off events. For 2429/2432 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1060 event pairs, 33 based on Foata normal form. 3/310 useless extension candidates. Maximal degree in co-relation 1443. Up to 274 conditions per place. [2024-06-27 20:58:16,446 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 52 selfloop transitions, 12 changer transitions 0/66 dead transitions. [2024-06-27 20:58:16,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 66 transitions, 566 flow [2024-06-27 20:58:16,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:58:16,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:58:16,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 66 transitions. [2024-06-27 20:58:16,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3142857142857143 [2024-06-27 20:58:16,447 INFO L175 Difference]: Start difference. First operand has 71 places, 58 transitions, 420 flow. Second operand 7 states and 66 transitions. [2024-06-27 20:58:16,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 66 transitions, 566 flow [2024-06-27 20:58:16,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 66 transitions, 526 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-27 20:58:16,451 INFO L231 Difference]: Finished difference. Result has 74 places, 58 transitions, 409 flow [2024-06-27 20:58:16,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=409, PETRI_PLACES=74, PETRI_TRANSITIONS=58} [2024-06-27 20:58:16,452 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 45 predicate places. [2024-06-27 20:58:16,452 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 58 transitions, 409 flow [2024-06-27 20:58:16,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 20:58:16,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:58:16,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:58:16,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 20:58:16,453 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:58:16,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:58:16,453 INFO L85 PathProgramCache]: Analyzing trace with hash 601638928, now seen corresponding path program 3 times [2024-06-27 20:58:16,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:58:16,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212162413] [2024-06-27 20:58:16,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:58:16,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:58:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:58:18,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:58:18,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:58:18,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212162413] [2024-06-27 20:58:18,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212162413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:58:18,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:58:18,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:58:18,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528422042] [2024-06-27 20:58:18,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:58:18,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:58:18,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:58:18,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:58:18,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:58:18,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 20:58:18,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 58 transitions, 409 flow. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 20:58:18,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:58:18,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 20:58:18,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:58:19,017 INFO L124 PetriNetUnfolderBase]: 173/319 cut-off events. [2024-06-27 20:58:19,018 INFO L125 PetriNetUnfolderBase]: For 2850/2853 co-relation queries the response was YES. [2024-06-27 20:58:19,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1532 conditions, 319 events. 173/319 cut-off events. For 2850/2853 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1099 event pairs, 33 based on Foata normal form. 4/321 useless extension candidates. Maximal degree in co-relation 1495. Up to 259 conditions per place. [2024-06-27 20:58:19,020 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 48 selfloop transitions, 23 changer transitions 0/73 dead transitions. [2024-06-27 20:58:19,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 73 transitions, 653 flow [2024-06-27 20:58:19,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:58:19,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:58:19,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 79 transitions. [2024-06-27 20:58:19,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32916666666666666 [2024-06-27 20:58:19,022 INFO L175 Difference]: Start difference. First operand has 74 places, 58 transitions, 409 flow. Second operand 8 states and 79 transitions. [2024-06-27 20:58:19,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 73 transitions, 653 flow [2024-06-27 20:58:19,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 73 transitions, 613 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 20:58:19,026 INFO L231 Difference]: Finished difference. Result has 76 places, 62 transitions, 469 flow [2024-06-27 20:58:19,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=469, PETRI_PLACES=76, PETRI_TRANSITIONS=62} [2024-06-27 20:58:19,027 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 47 predicate places. [2024-06-27 20:58:19,027 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 62 transitions, 469 flow [2024-06-27 20:58:19,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 20:58:19,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:58:19,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:58:19,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 20:58:19,029 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:58:19,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:58:19,030 INFO L85 PathProgramCache]: Analyzing trace with hash -926241254, now seen corresponding path program 4 times [2024-06-27 20:58:19,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:58:19,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438411284] [2024-06-27 20:58:19,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:58:19,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:58:19,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:58:20,583 INFO 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 20:58:20,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:58:20,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438411284] [2024-06-27 20:58:20,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438411284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:58:20,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:58:20,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:58:20,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589701641] [2024-06-27 20:58:20,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:58:20,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:58:20,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:58:20,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:58:20,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:58:20,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 20:58:20,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 62 transitions, 469 flow. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 20:58:20,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:58:20,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 20:58:20,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:58:21,141 INFO L124 PetriNetUnfolderBase]: 174/321 cut-off events. [2024-06-27 20:58:21,141 INFO L125 PetriNetUnfolderBase]: For 3253/3256 co-relation queries the response was YES. [2024-06-27 20:58:21,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1594 conditions, 321 events. 174/321 cut-off events. For 3253/3256 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1107 event pairs, 33 based on Foata normal form. 4/323 useless extension candidates. Maximal degree in co-relation 1556. Up to 277 conditions per place. [2024-06-27 20:58:21,143 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 59 selfloop transitions, 15 changer transitions 0/76 dead transitions. [2024-06-27 20:58:21,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 76 transitions, 679 flow [2024-06-27 20:58:21,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:58:21,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:58:21,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 75 transitions. [2024-06-27 20:58:21,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-27 20:58:21,145 INFO L175 Difference]: Start difference. First operand has 76 places, 62 transitions, 469 flow. Second operand 8 states and 75 transitions. [2024-06-27 20:58:21,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 76 transitions, 679 flow [2024-06-27 20:58:21,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 76 transitions, 640 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-27 20:58:21,150 INFO L231 Difference]: Finished difference. Result has 81 places, 66 transitions, 512 flow [2024-06-27 20:58:21,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=512, PETRI_PLACES=81, PETRI_TRANSITIONS=66} [2024-06-27 20:58:21,151 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 52 predicate places. [2024-06-27 20:58:21,151 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 66 transitions, 512 flow [2024-06-27 20:58:21,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 20:58:21,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:58:21,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:58:21,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 20:58:21,152 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:58:21,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:58:21,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1354627711, now seen corresponding path program 1 times [2024-06-27 20:58:21,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:58:21,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532918232] [2024-06-27 20:58:21,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:58:21,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:58:21,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:58:22,922 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 20:58:22,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:58:22,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532918232] [2024-06-27 20:58:22,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532918232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:58:22,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:58:22,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:58:22,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024000029] [2024-06-27 20:58:22,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:58:22,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:58:22,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:58:22,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:58:22,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:58:22,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 20:58:22,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 66 transitions, 512 flow. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 20:58:22,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:58:22,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 20:58:22,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:58:23,422 INFO L124 PetriNetUnfolderBase]: 185/342 cut-off events. [2024-06-27 20:58:23,422 INFO L125 PetriNetUnfolderBase]: For 3947/3950 co-relation queries the response was YES. [2024-06-27 20:58:23,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1778 conditions, 342 events. 185/342 cut-off events. For 3947/3950 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1222 event pairs, 20 based on Foata normal form. 4/344 useless extension candidates. Maximal degree in co-relation 1737. Up to 241 conditions per place. [2024-06-27 20:58:23,425 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 68 selfloop transitions, 18 changer transitions 0/88 dead transitions. [2024-06-27 20:58:23,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 88 transitions, 784 flow [2024-06-27 20:58:23,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:58:23,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:58:23,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-27 20:58:23,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-27 20:58:23,426 INFO L175 Difference]: Start difference. First operand has 81 places, 66 transitions, 512 flow. Second operand 8 states and 84 transitions. [2024-06-27 20:58:23,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 88 transitions, 784 flow [2024-06-27 20:58:23,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 88 transitions, 736 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 20:58:23,432 INFO L231 Difference]: Finished difference. Result has 84 places, 68 transitions, 526 flow [2024-06-27 20:58:23,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=526, PETRI_PLACES=84, PETRI_TRANSITIONS=68} [2024-06-27 20:58:23,432 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 55 predicate places. [2024-06-27 20:58:23,432 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 68 transitions, 526 flow [2024-06-27 20:58:23,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 20:58:23,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:58:23,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:58:23,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 20:58:23,433 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:58:23,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:58:23,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1354630625, now seen corresponding path program 1 times [2024-06-27 20:58:23,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:58:23,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838974678] [2024-06-27 20:58:23,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:58:23,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:58:23,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:58:25,847 INFO 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 20:58:25,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:58:25,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838974678] [2024-06-27 20:58:25,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838974678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:58:25,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:58:25,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:58:25,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526448370] [2024-06-27 20:58:25,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:58:25,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:58:25,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:58:25,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:58:25,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:58:25,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 20:58:25,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 68 transitions, 526 flow. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 20:58:25,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:58:25,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 20:58:25,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:58:26,442 INFO L124 PetriNetUnfolderBase]: 201/368 cut-off events. [2024-06-27 20:58:26,442 INFO L125 PetriNetUnfolderBase]: For 4711/4714 co-relation queries the response was YES. [2024-06-27 20:58:26,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1952 conditions, 368 events. 201/368 cut-off events. For 4711/4714 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1347 event pairs, 34 based on Foata normal form. 4/370 useless extension candidates. Maximal degree in co-relation 1910. Up to 258 conditions per place. [2024-06-27 20:58:26,445 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 62 selfloop transitions, 30 changer transitions 0/94 dead transitions. [2024-06-27 20:58:26,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 94 transitions, 854 flow [2024-06-27 20:58:26,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:58:26,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:58:26,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-27 20:58:26,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-27 20:58:26,448 INFO L175 Difference]: Start difference. First operand has 84 places, 68 transitions, 526 flow. Second operand 9 states and 99 transitions. [2024-06-27 20:58:26,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 94 transitions, 854 flow [2024-06-27 20:58:26,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 94 transitions, 829 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 20:58:26,458 INFO L231 Difference]: Finished difference. Result has 90 places, 72 transitions, 613 flow [2024-06-27 20:58:26,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=613, PETRI_PLACES=90, PETRI_TRANSITIONS=72} [2024-06-27 20:58:26,458 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 61 predicate places. [2024-06-27 20:58:26,459 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 72 transitions, 613 flow [2024-06-27 20:58:26,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 20:58:26,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:58:26,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:58:26,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 20:58:26,460 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:58:26,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:58:26,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1354630501, now seen corresponding path program 2 times [2024-06-27 20:58:26,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:58:26,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400399771] [2024-06-27 20:58:26,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:58:26,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:58:26,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:58:28,342 INFO 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 20:58:28,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:58:28,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400399771] [2024-06-27 20:58:28,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400399771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:58:28,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:58:28,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:58:28,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886323752] [2024-06-27 20:58:28,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:58:28,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:58:28,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:58:28,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:58:28,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:58:28,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 20:58:28,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 72 transitions, 613 flow. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 20:58:28,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:58:28,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 20:58:28,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:58:28,823 INFO L124 PetriNetUnfolderBase]: 205/376 cut-off events. [2024-06-27 20:58:28,823 INFO L125 PetriNetUnfolderBase]: For 5329/5332 co-relation queries the response was YES. [2024-06-27 20:58:28,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2095 conditions, 376 events. 205/376 cut-off events. For 5329/5332 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1385 event pairs, 34 based on Foata normal form. 4/378 useless extension candidates. Maximal degree in co-relation 2051. Up to 324 conditions per place. [2024-06-27 20:58:28,825 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 77 selfloop transitions, 12 changer transitions 0/91 dead transitions. [2024-06-27 20:58:28,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 91 transitions, 843 flow [2024-06-27 20:58:28,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:58:28,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:58:28,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-06-27 20:58:28,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-27 20:58:28,827 INFO L175 Difference]: Start difference. First operand has 90 places, 72 transitions, 613 flow. Second operand 8 states and 80 transitions. [2024-06-27 20:58:28,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 91 transitions, 843 flow [2024-06-27 20:58:28,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 91 transitions, 798 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 20:58:28,833 INFO L231 Difference]: Finished difference. Result has 93 places, 73 transitions, 608 flow [2024-06-27 20:58:28,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=608, PETRI_PLACES=93, PETRI_TRANSITIONS=73} [2024-06-27 20:58:28,834 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 64 predicate places. [2024-06-27 20:58:28,834 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 73 transitions, 608 flow [2024-06-27 20:58:28,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 20:58:28,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:58:28,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:58:28,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 20:58:28,835 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:58:28,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:58:28,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1466465593, now seen corresponding path program 3 times [2024-06-27 20:58:28,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:58:28,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712472707] [2024-06-27 20:58:28,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:58:28,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:58:28,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:58:31,273 INFO 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 20:58:31,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:58:31,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712472707] [2024-06-27 20:58:31,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712472707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:58:31,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:58:31,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:58:31,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656817134] [2024-06-27 20:58:31,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:58:31,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:58:31,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:58:31,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:58:31,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:58:31,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 20:58:31,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 73 transitions, 608 flow. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 20:58:31,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:58:31,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 20:58:31,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:58:31,627 INFO L124 PetriNetUnfolderBase]: 202/371 cut-off events. [2024-06-27 20:58:31,627 INFO L125 PetriNetUnfolderBase]: For 5425/5428 co-relation queries the response was YES. [2024-06-27 20:58:31,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2066 conditions, 371 events. 202/371 cut-off events. For 5425/5428 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1369 event pairs, 35 based on Foata normal form. 4/373 useless extension candidates. Maximal degree in co-relation 2020. Up to 327 conditions per place. [2024-06-27 20:58:31,630 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 73 selfloop transitions, 12 changer transitions 0/87 dead transitions. [2024-06-27 20:58:31,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 87 transitions, 810 flow [2024-06-27 20:58:31,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:58:31,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:58:31,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 76 transitions. [2024-06-27 20:58:31,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31666666666666665 [2024-06-27 20:58:31,632 INFO L175 Difference]: Start difference. First operand has 93 places, 73 transitions, 608 flow. Second operand 8 states and 76 transitions. [2024-06-27 20:58:31,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 87 transitions, 810 flow [2024-06-27 20:58:31,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 87 transitions, 772 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 20:58:31,640 INFO L231 Difference]: Finished difference. Result has 94 places, 73 transitions, 598 flow [2024-06-27 20:58:31,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=598, PETRI_PLACES=94, PETRI_TRANSITIONS=73} [2024-06-27 20:58:31,641 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 65 predicate places. [2024-06-27 20:58:31,641 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 73 transitions, 598 flow [2024-06-27 20:58:31,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 20:58:31,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:58:31,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:58:31,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 20:58:31,642 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:58:31,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:58:31,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1357431785, now seen corresponding path program 2 times [2024-06-27 20:58:31,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:58:31,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109331849] [2024-06-27 20:58:31,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:58:31,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:58:31,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:58:34,096 INFO 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 20:58:34,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:58:34,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109331849] [2024-06-27 20:58:34,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109331849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:58:34,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:58:34,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:58:34,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010487627] [2024-06-27 20:58:34,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:58:34,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:58:34,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:58:34,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:58:34,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:58:34,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 20:58:34,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 73 transitions, 598 flow. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 20:58:34,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:58:34,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 20:58:34,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:58:34,508 INFO L124 PetriNetUnfolderBase]: 208/381 cut-off events. [2024-06-27 20:58:34,508 INFO L125 PetriNetUnfolderBase]: For 5877/5880 co-relation queries the response was YES. [2024-06-27 20:58:34,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2121 conditions, 381 events. 208/381 cut-off events. For 5877/5880 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1410 event pairs, 33 based on Foata normal form. 4/383 useless extension candidates. Maximal degree in co-relation 2074. Up to 332 conditions per place. [2024-06-27 20:58:34,511 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 75 selfloop transitions, 13 changer transitions 0/90 dead transitions. [2024-06-27 20:58:34,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 90 transitions, 844 flow [2024-06-27 20:58:34,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:58:34,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:58:34,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 78 transitions. [2024-06-27 20:58:34,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325 [2024-06-27 20:58:34,513 INFO L175 Difference]: Start difference. First operand has 94 places, 73 transitions, 598 flow. Second operand 8 states and 78 transitions. [2024-06-27 20:58:34,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 90 transitions, 844 flow [2024-06-27 20:58:34,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 90 transitions, 802 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 20:58:34,520 INFO L231 Difference]: Finished difference. Result has 95 places, 75 transitions, 615 flow [2024-06-27 20:58:34,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=615, PETRI_PLACES=95, PETRI_TRANSITIONS=75} [2024-06-27 20:58:34,521 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 66 predicate places. [2024-06-27 20:58:34,521 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 75 transitions, 615 flow [2024-06-27 20:58:34,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 20:58:34,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:58:34,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:58:34,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 20:58:34,522 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:58:34,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:58:34,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1357427135, now seen corresponding path program 3 times [2024-06-27 20:58:34,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:58:34,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895649502] [2024-06-27 20:58:34,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:58:34,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:58:34,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:58:37,300 INFO 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 20:58:37,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:58:37,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895649502] [2024-06-27 20:58:37,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895649502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:58:37,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:58:37,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:58:37,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112491056] [2024-06-27 20:58:37,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:58:37,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:58:37,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:58:37,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:58:37,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:58:37,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 20:58:37,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 75 transitions, 615 flow. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 20:58:37,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:58:37,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 20:58:37,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:58:37,731 INFO L124 PetriNetUnfolderBase]: 214/391 cut-off events. [2024-06-27 20:58:37,731 INFO L125 PetriNetUnfolderBase]: For 6436/6439 co-relation queries the response was YES. [2024-06-27 20:58:37,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2191 conditions, 391 events. 214/391 cut-off events. For 6436/6439 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1466 event pairs, 33 based on Foata normal form. 4/393 useless extension candidates. Maximal degree in co-relation 2144. Up to 333 conditions per place. [2024-06-27 20:58:37,733 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 75 selfloop transitions, 16 changer transitions 0/93 dead transitions. [2024-06-27 20:58:37,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 93 transitions, 879 flow [2024-06-27 20:58:37,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:58:37,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:58:37,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-27 20:58:37,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-27 20:58:37,734 INFO L175 Difference]: Start difference. First operand has 95 places, 75 transitions, 615 flow. Second operand 8 states and 81 transitions. [2024-06-27 20:58:37,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 93 transitions, 879 flow [2024-06-27 20:58:37,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 93 transitions, 836 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 20:58:37,742 INFO L231 Difference]: Finished difference. Result has 97 places, 77 transitions, 641 flow [2024-06-27 20:58:37,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=641, PETRI_PLACES=97, PETRI_TRANSITIONS=77} [2024-06-27 20:58:37,742 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 68 predicate places. [2024-06-27 20:58:37,743 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 77 transitions, 641 flow [2024-06-27 20:58:37,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 20:58:37,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:58:37,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:58:37,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 20:58:37,743 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:58:37,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:58:37,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1472902631, now seen corresponding path program 1 times [2024-06-27 20:58:37,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:58:37,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689353467] [2024-06-27 20:58:37,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:58:37,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:58:37,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:58:39,829 INFO 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 20:58:39,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:58:39,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689353467] [2024-06-27 20:58:39,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689353467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:58:39,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:58:39,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:58:39,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553122074] [2024-06-27 20:58:39,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:58:39,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:58:39,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:58:39,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:58:39,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:58:39,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 20:58:39,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 77 transitions, 641 flow. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 20:58:39,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:58:39,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 20:58:39,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:58:40,630 INFO L124 PetriNetUnfolderBase]: 226/414 cut-off events. [2024-06-27 20:58:40,630 INFO L125 PetriNetUnfolderBase]: For 7526/7529 co-relation queries the response was YES. [2024-06-27 20:58:40,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2406 conditions, 414 events. 226/414 cut-off events. For 7526/7529 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1590 event pairs, 33 based on Foata normal form. 3/415 useless extension candidates. Maximal degree in co-relation 2358. Up to 313 conditions per place. [2024-06-27 20:58:40,633 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 67 selfloop transitions, 32 changer transitions 0/101 dead transitions. [2024-06-27 20:58:40,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 101 transitions, 1039 flow [2024-06-27 20:58:40,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:58:40,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:58:40,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-27 20:58:40,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35185185185185186 [2024-06-27 20:58:40,635 INFO L175 Difference]: Start difference. First operand has 97 places, 77 transitions, 641 flow. Second operand 9 states and 95 transitions. [2024-06-27 20:58:40,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 101 transitions, 1039 flow [2024-06-27 20:58:40,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 101 transitions, 974 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-27 20:58:40,644 INFO L231 Difference]: Finished difference. Result has 101 places, 82 transitions, 723 flow [2024-06-27 20:58:40,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=723, PETRI_PLACES=101, PETRI_TRANSITIONS=82} [2024-06-27 20:58:40,645 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 72 predicate places. [2024-06-27 20:58:40,645 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 82 transitions, 723 flow [2024-06-27 20:58:40,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 20:58:40,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:58:40,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:58:40,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 20:58:40,645 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:58:40,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:58:40,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1472902879, now seen corresponding path program 1 times [2024-06-27 20:58:40,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:58:40,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501608232] [2024-06-27 20:58:40,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:58:40,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:58:40,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:58:42,675 INFO 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 20:58:42,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:58:42,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501608232] [2024-06-27 20:58:42,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501608232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:58:42,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:58:42,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:58:42,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357066866] [2024-06-27 20:58:42,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:58:42,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:58:42,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:58:42,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:58:42,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:58:42,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 20:58:42,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 82 transitions, 723 flow. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 20:58:42,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:58:42,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 20:58:42,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:58:43,347 INFO L124 PetriNetUnfolderBase]: 230/422 cut-off events. [2024-06-27 20:58:43,347 INFO L125 PetriNetUnfolderBase]: For 8556/8559 co-relation queries the response was YES. [2024-06-27 20:58:43,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2536 conditions, 422 events. 230/422 cut-off events. For 8556/8559 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1644 event pairs, 35 based on Foata normal form. 4/424 useless extension candidates. Maximal degree in co-relation 2486. Up to 369 conditions per place. [2024-06-27 20:58:43,350 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 74 selfloop transitions, 16 changer transitions 0/92 dead transitions. [2024-06-27 20:58:43,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 92 transitions, 936 flow [2024-06-27 20:58:43,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:58:43,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:58:43,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 68 transitions. [2024-06-27 20:58:43,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3238095238095238 [2024-06-27 20:58:43,352 INFO L175 Difference]: Start difference. First operand has 101 places, 82 transitions, 723 flow. Second operand 7 states and 68 transitions. [2024-06-27 20:58:43,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 92 transitions, 936 flow [2024-06-27 20:58:43,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 92 transitions, 894 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 20:58:43,362 INFO L231 Difference]: Finished difference. Result has 103 places, 83 transitions, 734 flow [2024-06-27 20:58:43,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=734, PETRI_PLACES=103, PETRI_TRANSITIONS=83} [2024-06-27 20:58:43,363 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 74 predicate places. [2024-06-27 20:58:43,363 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 83 transitions, 734 flow [2024-06-27 20:58:43,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 20:58:43,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:58:43,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:58:43,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 20:58:43,364 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:58:43,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:58:43,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1472895935, now seen corresponding path program 4 times [2024-06-27 20:58:43,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:58:43,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560811498] [2024-06-27 20:58:43,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:58:43,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:58:43,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:58:45,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:58:45,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:58:45,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560811498] [2024-06-27 20:58:45,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560811498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:58:45,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:58:45,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:58:45,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557605982] [2024-06-27 20:58:45,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:58:45,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:58:45,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:58:45,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:58:45,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:58:45,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 20:58:45,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 83 transitions, 734 flow. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 20:58:45,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:58:45,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 20:58:45,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:58:46,371 INFO L124 PetriNetUnfolderBase]: 239/437 cut-off events. [2024-06-27 20:58:46,371 INFO L125 PetriNetUnfolderBase]: For 9445/9448 co-relation queries the response was YES. [2024-06-27 20:58:46,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2668 conditions, 437 events. 239/437 cut-off events. For 9445/9448 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1727 event pairs, 33 based on Foata normal form. 5/440 useless extension candidates. Maximal degree in co-relation 2616. Up to 324 conditions per place. [2024-06-27 20:58:46,374 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 67 selfloop transitions, 36 changer transitions 0/105 dead transitions. [2024-06-27 20:58:46,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 105 transitions, 1102 flow [2024-06-27 20:58:46,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:58:46,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:58:46,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-27 20:58:46,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34444444444444444 [2024-06-27 20:58:46,376 INFO L175 Difference]: Start difference. First operand has 103 places, 83 transitions, 734 flow. Second operand 9 states and 93 transitions. [2024-06-27 20:58:46,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 105 transitions, 1102 flow [2024-06-27 20:58:46,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 105 transitions, 1060 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 20:58:46,388 INFO L231 Difference]: Finished difference. Result has 106 places, 87 transitions, 838 flow [2024-06-27 20:58:46,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=838, PETRI_PLACES=106, PETRI_TRANSITIONS=87} [2024-06-27 20:58:46,389 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 77 predicate places. [2024-06-27 20:58:46,389 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 87 transitions, 838 flow [2024-06-27 20:58:46,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 20:58:46,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:58:46,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:58:46,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 20:58:46,390 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:58:46,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:58:46,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1472722955, now seen corresponding path program 5 times [2024-06-27 20:58:46,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:58:46,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755749897] [2024-06-27 20:58:46,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:58:46,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:58:46,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:58:48,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:58:48,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:58:48,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755749897] [2024-06-27 20:58:48,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755749897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:58:48,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:58:48,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:58:48,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812318743] [2024-06-27 20:58:48,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:58:48,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:58:48,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:58:48,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:58:48,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:58:48,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 20:58:48,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 87 transitions, 838 flow. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 20:58:48,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:58:48,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 20:58:48,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:58:49,157 INFO L124 PetriNetUnfolderBase]: 245/447 cut-off events. [2024-06-27 20:58:49,157 INFO L125 PetriNetUnfolderBase]: For 9630/9633 co-relation queries the response was YES. [2024-06-27 20:58:49,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2812 conditions, 447 events. 245/447 cut-off events. For 9630/9633 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1775 event pairs, 37 based on Foata normal form. 4/449 useless extension candidates. Maximal degree in co-relation 2760. Up to 389 conditions per place. [2024-06-27 20:58:49,160 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 79 selfloop transitions, 20 changer transitions 0/101 dead transitions. [2024-06-27 20:58:49,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 101 transitions, 1104 flow [2024-06-27 20:58:49,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:58:49,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:58:49,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 85 transitions. [2024-06-27 20:58:49,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3148148148148148 [2024-06-27 20:58:49,162 INFO L175 Difference]: Start difference. First operand has 106 places, 87 transitions, 838 flow. Second operand 9 states and 85 transitions. [2024-06-27 20:58:49,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 101 transitions, 1104 flow [2024-06-27 20:58:49,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 101 transitions, 1041 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-27 20:58:49,174 INFO L231 Difference]: Finished difference. Result has 110 places, 89 transitions, 851 flow [2024-06-27 20:58:49,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=775, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=851, PETRI_PLACES=110, PETRI_TRANSITIONS=89} [2024-06-27 20:58:49,174 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 81 predicate places. [2024-06-27 20:58:49,175 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 89 transitions, 851 flow [2024-06-27 20:58:49,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 20:58:49,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:58:49,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:58:49,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 20:58:49,175 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:58:49,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:58:49,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1472718305, now seen corresponding path program 6 times [2024-06-27 20:58:49,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:58:49,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509011353] [2024-06-27 20:58:49,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:58:49,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:58:49,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:58:51,920 INFO 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 20:58:51,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:58:51,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509011353] [2024-06-27 20:58:51,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509011353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:58:51,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:58:51,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:58:51,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054678923] [2024-06-27 20:58:51,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:58:51,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:58:51,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:58:51,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:58:51,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:58:51,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 20:58:51,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 89 transitions, 851 flow. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 20:58:51,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:58:51,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 20:58:51,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:58:52,710 INFO L124 PetriNetUnfolderBase]: 241/441 cut-off events. [2024-06-27 20:58:52,710 INFO L125 PetriNetUnfolderBase]: For 9545/9548 co-relation queries the response was YES. [2024-06-27 20:58:52,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2760 conditions, 441 events. 241/441 cut-off events. For 9545/9548 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1745 event pairs, 36 based on Foata normal form. 4/443 useless extension candidates. Maximal degree in co-relation 2706. Up to 354 conditions per place. [2024-06-27 20:58:52,714 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 68 selfloop transitions, 33 changer transitions 0/103 dead transitions. [2024-06-27 20:58:52,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 103 transitions, 1107 flow [2024-06-27 20:58:52,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:58:52,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:58:52,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 95 transitions. [2024-06-27 20:58:52,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31666666666666665 [2024-06-27 20:58:52,715 INFO L175 Difference]: Start difference. First operand has 110 places, 89 transitions, 851 flow. Second operand 10 states and 95 transitions. [2024-06-27 20:58:52,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 103 transitions, 1107 flow [2024-06-27 20:58:52,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 103 transitions, 1043 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 20:58:52,729 INFO L231 Difference]: Finished difference. Result has 113 places, 89 transitions, 862 flow [2024-06-27 20:58:52,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=787, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=862, PETRI_PLACES=113, PETRI_TRANSITIONS=89} [2024-06-27 20:58:52,730 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 84 predicate places. [2024-06-27 20:58:52,730 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 89 transitions, 862 flow [2024-06-27 20:58:52,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 20:58:52,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:58:52,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:58:52,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 20:58:52,731 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:58:52,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:58:52,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1472718181, now seen corresponding path program 4 times [2024-06-27 20:58:52,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:58:52,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681984589] [2024-06-27 20:58:52,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:58:52,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:58:52,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:58:55,007 INFO 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 20:58:55,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:58:55,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681984589] [2024-06-27 20:58:55,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681984589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:58:55,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:58:55,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:58:55,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575441367] [2024-06-27 20:58:55,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:58:55,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:58:55,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:58:55,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:58:55,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:58:55,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 20:58:55,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 89 transitions, 862 flow. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 20:58:55,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:58:55,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 20:58:55,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:58:55,590 INFO L124 PetriNetUnfolderBase]: 238/436 cut-off events. [2024-06-27 20:58:55,591 INFO L125 PetriNetUnfolderBase]: For 9445/9448 co-relation queries the response was YES. [2024-06-27 20:58:55,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2722 conditions, 436 events. 238/436 cut-off events. For 9445/9448 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1731 event pairs, 31 based on Foata normal form. 4/438 useless extension candidates. Maximal degree in co-relation 2667. Up to 351 conditions per place. [2024-06-27 20:58:55,594 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 75 selfloop transitions, 31 changer transitions 0/108 dead transitions. [2024-06-27 20:58:55,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 108 transitions, 1189 flow [2024-06-27 20:58:55,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:58:55,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:58:55,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-06-27 20:58:55,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32592592592592595 [2024-06-27 20:58:55,597 INFO L175 Difference]: Start difference. First operand has 113 places, 89 transitions, 862 flow. Second operand 9 states and 88 transitions. [2024-06-27 20:58:55,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 108 transitions, 1189 flow [2024-06-27 20:58:55,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 108 transitions, 1110 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 20:58:55,610 INFO L231 Difference]: Finished difference. Result has 115 places, 91 transitions, 898 flow [2024-06-27 20:58:55,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=787, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=898, PETRI_PLACES=115, PETRI_TRANSITIONS=91} [2024-06-27 20:58:55,611 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 86 predicate places. [2024-06-27 20:58:55,611 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 91 transitions, 898 flow [2024-06-27 20:58:55,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 20:58:55,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:58:55,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:58:55,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 20:58:55,611 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:58:55,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:58:55,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1351300327, now seen corresponding path program 2 times [2024-06-27 20:58:55,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:58:55,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311377112] [2024-06-27 20:58:55,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:58:55,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:58:55,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:58:57,564 INFO 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 20:58:57,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:58:57,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311377112] [2024-06-27 20:58:57,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311377112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:58:57,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:58:57,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:58:57,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674415892] [2024-06-27 20:58:57,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:58:57,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:58:57,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:58:57,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:58:57,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:58:57,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 20:58:57,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 91 transitions, 898 flow. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 20:58:57,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:58:57,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 20:58:57,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:58:58,135 INFO L124 PetriNetUnfolderBase]: 236/433 cut-off events. [2024-06-27 20:58:58,135 INFO L125 PetriNetUnfolderBase]: For 8768/8771 co-relation queries the response was YES. [2024-06-27 20:58:58,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2722 conditions, 433 events. 236/433 cut-off events. For 8768/8771 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1702 event pairs, 36 based on Foata normal form. 3/434 useless extension candidates. Maximal degree in co-relation 2665. Up to 375 conditions per place. [2024-06-27 20:58:58,141 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 77 selfloop transitions, 22 changer transitions 0/101 dead transitions. [2024-06-27 20:58:58,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 101 transitions, 1136 flow [2024-06-27 20:58:58,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:58:58,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:58:58,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 77 transitions. [2024-06-27 20:58:58,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32083333333333336 [2024-06-27 20:58:58,142 INFO L175 Difference]: Start difference. First operand has 115 places, 91 transitions, 898 flow. Second operand 8 states and 77 transitions. [2024-06-27 20:58:58,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 101 transitions, 1136 flow [2024-06-27 20:58:58,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 101 transitions, 1089 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 20:58:58,156 INFO L231 Difference]: Finished difference. Result has 116 places, 92 transitions, 926 flow [2024-06-27 20:58:58,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=851, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=926, PETRI_PLACES=116, PETRI_TRANSITIONS=92} [2024-06-27 20:58:58,157 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 87 predicate places. [2024-06-27 20:58:58,157 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 92 transitions, 926 flow [2024-06-27 20:58:58,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 20:58:58,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:58:58,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:58:58,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 20:58:58,157 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:58:58,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:58:58,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1359871455, now seen corresponding path program 2 times [2024-06-27 20:58:58,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:58:58,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464783991] [2024-06-27 20:58:58,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:58:58,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:58:58,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:59:00,628 INFO 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 20:59:00,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:59:00,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464783991] [2024-06-27 20:59:00,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464783991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:59:00,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:59:00,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:59:00,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293324304] [2024-06-27 20:59:00,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:59:00,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:59:00,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:59:00,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:59:00,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:59:00,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 20:59:00,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 92 transitions, 926 flow. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 20:59:00,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:59:00,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 20:59:00,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:59:01,152 INFO L124 PetriNetUnfolderBase]: 240/441 cut-off events. [2024-06-27 20:59:01,152 INFO L125 PetriNetUnfolderBase]: For 9807/9810 co-relation queries the response was YES. [2024-06-27 20:59:01,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2791 conditions, 441 events. 240/441 cut-off events. For 9807/9810 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1753 event pairs, 31 based on Foata normal form. 4/443 useless extension candidates. Maximal degree in co-relation 2732. Up to 363 conditions per place. [2024-06-27 20:59:01,155 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 84 selfloop transitions, 19 changer transitions 0/105 dead transitions. [2024-06-27 20:59:01,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 105 transitions, 1234 flow [2024-06-27 20:59:01,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:59:01,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:59:01,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 75 transitions. [2024-06-27 20:59:01,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-27 20:59:01,156 INFO L175 Difference]: Start difference. First operand has 116 places, 92 transitions, 926 flow. Second operand 8 states and 75 transitions. [2024-06-27 20:59:01,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 105 transitions, 1234 flow [2024-06-27 20:59:01,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 105 transitions, 1177 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 20:59:01,171 INFO L231 Difference]: Finished difference. Result has 118 places, 93 transitions, 931 flow [2024-06-27 20:59:01,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=931, PETRI_PLACES=118, PETRI_TRANSITIONS=93} [2024-06-27 20:59:01,172 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 89 predicate places. [2024-06-27 20:59:01,172 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 93 transitions, 931 flow [2024-06-27 20:59:01,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 20:59:01,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:59:01,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:59:01,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 20:59:01,173 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:59:01,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:59:01,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1351300575, now seen corresponding path program 3 times [2024-06-27 20:59:01,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:59:01,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883461906] [2024-06-27 20:59:01,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:59:01,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:59:01,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:59:03,303 INFO 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 20:59:03,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:59:03,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883461906] [2024-06-27 20:59:03,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883461906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:59:03,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:59:03,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:59:03,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107637920] [2024-06-27 20:59:03,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:59:03,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:59:03,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:59:03,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:59:03,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:59:03,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 20:59:03,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 93 transitions, 931 flow. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 20:59:03,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:59:03,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 20:59:03,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:59:03,909 INFO L124 PetriNetUnfolderBase]: 237/436 cut-off events. [2024-06-27 20:59:03,909 INFO L125 PetriNetUnfolderBase]: For 9654/9657 co-relation queries the response was YES. [2024-06-27 20:59:03,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2718 conditions, 436 events. 237/436 cut-off events. For 9654/9657 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1726 event pairs, 35 based on Foata normal form. 4/438 useless extension candidates. Maximal degree in co-relation 2658. Up to 381 conditions per place. [2024-06-27 20:59:03,912 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 83 selfloop transitions, 18 changer transitions 0/103 dead transitions. [2024-06-27 20:59:03,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 103 transitions, 1155 flow [2024-06-27 20:59:03,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:59:03,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:59:03,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 76 transitions. [2024-06-27 20:59:03,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31666666666666665 [2024-06-27 20:59:03,913 INFO L175 Difference]: Start difference. First operand has 118 places, 93 transitions, 931 flow. Second operand 8 states and 76 transitions. [2024-06-27 20:59:03,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 103 transitions, 1155 flow [2024-06-27 20:59:03,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 103 transitions, 1057 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 20:59:03,929 INFO L231 Difference]: Finished difference. Result has 119 places, 93 transitions, 873 flow [2024-06-27 20:59:03,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=873, PETRI_PLACES=119, PETRI_TRANSITIONS=93} [2024-06-27 20:59:03,929 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 90 predicate places. [2024-06-27 20:59:03,929 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 93 transitions, 873 flow [2024-06-27 20:59:03,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 20:59:03,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:59:03,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:59:03,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 20:59:03,930 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:59:03,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:59:03,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1351293631, now seen corresponding path program 7 times [2024-06-27 20:59:03,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:59:03,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980216535] [2024-06-27 20:59:03,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:59:03,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:59:03,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:59:05,717 INFO 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 20:59:05,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:59:05,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980216535] [2024-06-27 20:59:05,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980216535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:59:05,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:59:05,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:59:05,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986441701] [2024-06-27 20:59:05,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:59:05,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:59:05,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:59:05,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:59:05,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:59:05,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 20:59:05,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 93 transitions, 873 flow. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 20:59:05,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:59:05,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 20:59:05,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:59:06,336 INFO L124 PetriNetUnfolderBase]: 233/430 cut-off events. [2024-06-27 20:59:06,336 INFO L125 PetriNetUnfolderBase]: For 8973/8976 co-relation queries the response was YES. [2024-06-27 20:59:06,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2510 conditions, 430 events. 233/430 cut-off events. For 8973/8976 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1713 event pairs, 35 based on Foata normal form. 4/432 useless extension candidates. Maximal degree in co-relation 2451. Up to 362 conditions per place. [2024-06-27 20:59:06,339 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 80 selfloop transitions, 24 changer transitions 0/106 dead transitions. [2024-06-27 20:59:06,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 106 transitions, 1151 flow [2024-06-27 20:59:06,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:59:06,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:59:06,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 85 transitions. [2024-06-27 20:59:06,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3148148148148148 [2024-06-27 20:59:06,340 INFO L175 Difference]: Start difference. First operand has 119 places, 93 transitions, 873 flow. Second operand 9 states and 85 transitions. [2024-06-27 20:59:06,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 106 transitions, 1151 flow [2024-06-27 20:59:06,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 106 transitions, 1109 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-27 20:59:06,354 INFO L231 Difference]: Finished difference. Result has 121 places, 95 transitions, 928 flow [2024-06-27 20:59:06,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=831, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=928, PETRI_PLACES=121, PETRI_TRANSITIONS=95} [2024-06-27 20:59:06,355 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 92 predicate places. [2024-06-27 20:59:06,355 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 95 transitions, 928 flow [2024-06-27 20:59:06,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 20:59:06,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:59:06,355 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 20:59:06,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 20:59:06,355 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:59:06,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:59:06,356 INFO L85 PathProgramCache]: Analyzing trace with hash -957999791, now seen corresponding path program 1 times [2024-06-27 20:59:06,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:59:06,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572122666] [2024-06-27 20:59:06,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:59:06,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:59:06,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:59:08,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:59:08,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:59:08,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572122666] [2024-06-27 20:59:08,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572122666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:59:08,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:59:08,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:59:08,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340855639] [2024-06-27 20:59:08,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:59:08,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:59:08,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:59:08,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:59:08,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:59:08,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 20:59:08,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 95 transitions, 928 flow. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:59:08,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:59:08,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 20:59:08,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:59:09,069 INFO L124 PetriNetUnfolderBase]: 274/517 cut-off events. [2024-06-27 20:59:09,069 INFO L125 PetriNetUnfolderBase]: For 17246/17249 co-relation queries the response was YES. [2024-06-27 20:59:09,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3235 conditions, 517 events. 274/517 cut-off events. For 17246/17249 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2234 event pairs, 48 based on Foata normal form. 10/525 useless extension candidates. Maximal degree in co-relation 3175. Up to 230 conditions per place. [2024-06-27 20:59:09,072 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 75 selfloop transitions, 35 changer transitions 14/126 dead transitions. [2024-06-27 20:59:09,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 126 transitions, 1392 flow [2024-06-27 20:59:09,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:59:09,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:59:09,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 20:59:09,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-27 20:59:09,073 INFO L175 Difference]: Start difference. First operand has 121 places, 95 transitions, 928 flow. Second operand 10 states and 110 transitions. [2024-06-27 20:59:09,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 126 transitions, 1392 flow [2024-06-27 20:59:09,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 126 transitions, 1317 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 20:59:09,096 INFO L231 Difference]: Finished difference. Result has 124 places, 92 transitions, 908 flow [2024-06-27 20:59:09,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=853, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=908, PETRI_PLACES=124, PETRI_TRANSITIONS=92} [2024-06-27 20:59:09,097 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 95 predicate places. [2024-06-27 20:59:09,097 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 92 transitions, 908 flow [2024-06-27 20:59:09,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:59:09,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:59:09,097 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 20:59:09,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 20:59:09,097 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:59:09,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:59:09,097 INFO L85 PathProgramCache]: Analyzing trace with hash -956122121, now seen corresponding path program 2 times [2024-06-27 20:59:09,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:59:09,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707861818] [2024-06-27 20:59:09,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:59:09,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:59:09,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:59:11,119 INFO 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 20:59:11,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:59:11,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707861818] [2024-06-27 20:59:11,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707861818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:59:11,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:59:11,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:59:11,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275062206] [2024-06-27 20:59:11,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:59:11,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:59:11,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:59:11,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:59:11,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:59:11,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 20:59:11,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 92 transitions, 908 flow. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:59:11,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:59:11,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 20:59:11,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:59:11,848 INFO L124 PetriNetUnfolderBase]: 260/491 cut-off events. [2024-06-27 20:59:11,848 INFO L125 PetriNetUnfolderBase]: For 19357/19360 co-relation queries the response was YES. [2024-06-27 20:59:11,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3196 conditions, 491 events. 260/491 cut-off events. For 19357/19360 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2107 event pairs, 58 based on Foata normal form. 12/501 useless extension candidates. Maximal degree in co-relation 3135. Up to 331 conditions per place. [2024-06-27 20:59:11,851 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 67 selfloop transitions, 34 changer transitions 11/114 dead transitions. [2024-06-27 20:59:11,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 114 transitions, 1242 flow [2024-06-27 20:59:11,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:59:11,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:59:11,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-27 20:59:11,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34 [2024-06-27 20:59:11,852 INFO L175 Difference]: Start difference. First operand has 124 places, 92 transitions, 908 flow. Second operand 10 states and 102 transitions. [2024-06-27 20:59:11,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 114 transitions, 1242 flow [2024-06-27 20:59:11,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 114 transitions, 1195 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 20:59:11,871 INFO L231 Difference]: Finished difference. Result has 122 places, 89 transitions, 911 flow [2024-06-27 20:59:11,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=861, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=911, PETRI_PLACES=122, PETRI_TRANSITIONS=89} [2024-06-27 20:59:11,872 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 93 predicate places. [2024-06-27 20:59:11,872 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 89 transitions, 911 flow [2024-06-27 20:59:11,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:59:11,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:59:11,872 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 20:59:11,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 20:59:11,872 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:59:11,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:59:11,872 INFO L85 PathProgramCache]: Analyzing trace with hash -956125841, now seen corresponding path program 3 times [2024-06-27 20:59:11,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:59:11,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706956424] [2024-06-27 20:59:11,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:59:11,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:59:11,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:59:14,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:59:14,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:59:14,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706956424] [2024-06-27 20:59:14,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706956424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:59:14,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:59:14,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:59:14,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676466911] [2024-06-27 20:59:14,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:59:14,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:59:14,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:59:14,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:59:14,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:59:14,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 20:59:14,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 89 transitions, 911 flow. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:59:14,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:59:14,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 20:59:14,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:59:14,766 INFO L124 PetriNetUnfolderBase]: 248/471 cut-off events. [2024-06-27 20:59:14,766 INFO L125 PetriNetUnfolderBase]: For 16372/16375 co-relation queries the response was YES. [2024-06-27 20:59:14,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3086 conditions, 471 events. 248/471 cut-off events. For 16372/16375 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1978 event pairs, 48 based on Foata normal form. 10/479 useless extension candidates. Maximal degree in co-relation 3027. Up to 321 conditions per place. [2024-06-27 20:59:14,769 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 61 selfloop transitions, 31 changer transitions 16/110 dead transitions. [2024-06-27 20:59:14,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 110 transitions, 1213 flow [2024-06-27 20:59:14,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:59:14,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:59:14,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-06-27 20:59:14,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33 [2024-06-27 20:59:14,770 INFO L175 Difference]: Start difference. First operand has 122 places, 89 transitions, 911 flow. Second operand 10 states and 99 transitions. [2024-06-27 20:59:14,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 110 transitions, 1213 flow [2024-06-27 20:59:14,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 110 transitions, 1118 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 20:59:14,787 INFO L231 Difference]: Finished difference. Result has 119 places, 85 transitions, 850 flow [2024-06-27 20:59:14,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=816, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=850, PETRI_PLACES=119, PETRI_TRANSITIONS=85} [2024-06-27 20:59:14,787 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 90 predicate places. [2024-06-27 20:59:14,788 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 85 transitions, 850 flow [2024-06-27 20:59:14,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:59:14,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:59:14,788 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 20:59:14,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 20:59:14,788 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:59:14,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:59:14,788 INFO L85 PathProgramCache]: Analyzing trace with hash -869430311, now seen corresponding path program 4 times [2024-06-27 20:59:14,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:59:14,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865990520] [2024-06-27 20:59:14,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:59:14,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:59:14,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:59:17,412 INFO 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 20:59:17,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:59:17,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865990520] [2024-06-27 20:59:17,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865990520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:59:17,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:59:17,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:59:17,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459430838] [2024-06-27 20:59:17,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:59:17,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:59:17,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:59:17,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:59:17,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:59:17,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 20:59:17,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 85 transitions, 850 flow. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:59:17,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:59:17,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 20:59:17,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:59:18,187 INFO L124 PetriNetUnfolderBase]: 244/463 cut-off events. [2024-06-27 20:59:18,187 INFO L125 PetriNetUnfolderBase]: For 16748/16751 co-relation queries the response was YES. [2024-06-27 20:59:18,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3015 conditions, 463 events. 244/463 cut-off events. For 16748/16751 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1950 event pairs, 52 based on Foata normal form. 14/475 useless extension candidates. Maximal degree in co-relation 2957. Up to 347 conditions per place. [2024-06-27 20:59:18,190 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 75 selfloop transitions, 8 changer transitions 19/104 dead transitions. [2024-06-27 20:59:18,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 104 transitions, 1170 flow [2024-06-27 20:59:18,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:59:18,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:59:18,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 90 transitions. [2024-06-27 20:59:18,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3 [2024-06-27 20:59:18,205 INFO L175 Difference]: Start difference. First operand has 119 places, 85 transitions, 850 flow. Second operand 10 states and 90 transitions. [2024-06-27 20:59:18,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 104 transitions, 1170 flow [2024-06-27 20:59:18,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 104 transitions, 1093 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-27 20:59:18,219 INFO L231 Difference]: Finished difference. Result has 113 places, 77 transitions, 753 flow [2024-06-27 20:59:18,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=775, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=753, PETRI_PLACES=113, PETRI_TRANSITIONS=77} [2024-06-27 20:59:18,220 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 84 predicate places. [2024-06-27 20:59:18,220 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 77 transitions, 753 flow [2024-06-27 20:59:18,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:59:18,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:59:18,220 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 20:59:18,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 20:59:18,220 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:59:18,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:59:18,221 INFO L85 PathProgramCache]: Analyzing trace with hash -869434031, now seen corresponding path program 5 times [2024-06-27 20:59:18,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:59:18,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988238183] [2024-06-27 20:59:18,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:59:18,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:59:18,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:59:20,965 INFO 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 20:59:20,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:59:20,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988238183] [2024-06-27 20:59:20,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988238183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:59:20,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:59:20,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:59:20,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967184852] [2024-06-27 20:59:20,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:59:20,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:59:20,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:59:20,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:59:20,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:59:20,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 20:59:20,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 77 transitions, 753 flow. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:59:20,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:59:20,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 20:59:20,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:59:21,371 INFO L124 PetriNetUnfolderBase]: 214/413 cut-off events. [2024-06-27 20:59:21,371 INFO L125 PetriNetUnfolderBase]: For 12473/12476 co-relation queries the response was YES. [2024-06-27 20:59:21,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2646 conditions, 413 events. 214/413 cut-off events. For 12473/12476 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1684 event pairs, 42 based on Foata normal form. 10/421 useless extension candidates. Maximal degree in co-relation 2591. Up to 337 conditions per place. [2024-06-27 20:59:21,373 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 67 selfloop transitions, 4 changer transitions 19/92 dead transitions. [2024-06-27 20:59:21,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 92 transitions, 997 flow [2024-06-27 20:59:21,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:59:21,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:59:21,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 77 transitions. [2024-06-27 20:59:21,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2851851851851852 [2024-06-27 20:59:21,374 INFO L175 Difference]: Start difference. First operand has 113 places, 77 transitions, 753 flow. Second operand 9 states and 77 transitions. [2024-06-27 20:59:21,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 92 transitions, 997 flow [2024-06-27 20:59:21,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 92 transitions, 951 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-27 20:59:21,386 INFO L231 Difference]: Finished difference. Result has 106 places, 72 transitions, 684 flow [2024-06-27 20:59:21,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=713, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=684, PETRI_PLACES=106, PETRI_TRANSITIONS=72} [2024-06-27 20:59:21,386 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 77 predicate places. [2024-06-27 20:59:21,386 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 72 transitions, 684 flow [2024-06-27 20:59:21,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:59:21,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:59:21,387 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 20:59:21,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 20:59:21,387 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:59:21,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:59:21,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1584657045, now seen corresponding path program 1 times [2024-06-27 20:59:21,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:59:21,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748699160] [2024-06-27 20:59:21,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:59:21,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:59:21,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:59:23,617 INFO 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 20:59:23,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:59:23,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748699160] [2024-06-27 20:59:23,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748699160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:59:23,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:59:23,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:59:23,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939747586] [2024-06-27 20:59:23,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:59:23,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:59:23,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:59:23,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:59:23,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:59:23,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 20:59:23,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 72 transitions, 684 flow. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:59:23,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:59:23,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 20:59:23,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:59:24,202 INFO L124 PetriNetUnfolderBase]: 186/353 cut-off events. [2024-06-27 20:59:24,202 INFO L125 PetriNetUnfolderBase]: For 7845/7845 co-relation queries the response was YES. [2024-06-27 20:59:24,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2167 conditions, 353 events. 186/353 cut-off events. For 7845/7845 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1352 event pairs, 37 based on Foata normal form. 2/353 useless extension candidates. Maximal degree in co-relation 2115. Up to 295 conditions per place. [2024-06-27 20:59:24,204 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 57 selfloop transitions, 19 changer transitions 0/78 dead transitions. [2024-06-27 20:59:24,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 78 transitions, 848 flow [2024-06-27 20:59:24,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:59:24,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:59:24,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 70 transitions. [2024-06-27 20:59:24,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2916666666666667 [2024-06-27 20:59:24,205 INFO L175 Difference]: Start difference. First operand has 106 places, 72 transitions, 684 flow. Second operand 8 states and 70 transitions. [2024-06-27 20:59:24,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 78 transitions, 848 flow [2024-06-27 20:59:24,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 78 transitions, 803 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-27 20:59:24,212 INFO L231 Difference]: Finished difference. Result has 95 places, 72 transitions, 682 flow [2024-06-27 20:59:24,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=639, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=682, PETRI_PLACES=95, PETRI_TRANSITIONS=72} [2024-06-27 20:59:24,212 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 66 predicate places. [2024-06-27 20:59:24,212 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 72 transitions, 682 flow [2024-06-27 20:59:24,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:59:24,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:59:24,214 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 20:59:24,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 20:59:24,214 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:59:24,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:59:24,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1584649605, now seen corresponding path program 2 times [2024-06-27 20:59:24,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:59:24,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236450451] [2024-06-27 20:59:24,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:59:24,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:59:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:59:26,757 INFO 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 20:59:26,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:59:26,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236450451] [2024-06-27 20:59:26,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236450451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:59:26,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:59:26,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:59:26,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322562738] [2024-06-27 20:59:26,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:59:26,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:59:26,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:59:26,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:59:26,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:59:26,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 20:59:26,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 72 transitions, 682 flow. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:59:26,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:59:26,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 20:59:26,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:59:27,335 INFO L124 PetriNetUnfolderBase]: 190/361 cut-off events. [2024-06-27 20:59:27,336 INFO L125 PetriNetUnfolderBase]: For 5565/5565 co-relation queries the response was YES. [2024-06-27 20:59:27,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2079 conditions, 361 events. 190/361 cut-off events. For 5565/5565 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1381 event pairs, 28 based on Foata normal form. 2/361 useless extension candidates. Maximal degree in co-relation 2033. Up to 300 conditions per place. [2024-06-27 20:59:27,338 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 62 selfloop transitions, 16 changer transitions 0/80 dead transitions. [2024-06-27 20:59:27,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 80 transitions, 866 flow [2024-06-27 20:59:27,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:59:27,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:59:27,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 69 transitions. [2024-06-27 20:59:27,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2875 [2024-06-27 20:59:27,339 INFO L175 Difference]: Start difference. First operand has 95 places, 72 transitions, 682 flow. Second operand 8 states and 69 transitions. [2024-06-27 20:59:27,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 80 transitions, 866 flow [2024-06-27 20:59:27,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 80 transitions, 803 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 20:59:27,346 INFO L231 Difference]: Finished difference. Result has 95 places, 73 transitions, 671 flow [2024-06-27 20:59:27,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=671, PETRI_PLACES=95, PETRI_TRANSITIONS=73} [2024-06-27 20:59:27,347 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 66 predicate places. [2024-06-27 20:59:27,347 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 73 transitions, 671 flow [2024-06-27 20:59:27,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:59:27,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:59:27,347 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 20:59:27,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 20:59:27,348 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:59:27,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:59:27,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1590227187, now seen corresponding path program 6 times [2024-06-27 20:59:27,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:59:27,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432982466] [2024-06-27 20:59:27,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:59:27,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:59:27,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:59:29,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:59:29,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:59:29,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432982466] [2024-06-27 20:59:29,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432982466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:59:29,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:59:29,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:59:29,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830733693] [2024-06-27 20:59:29,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:59:29,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:59:29,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:59:29,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:59:29,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:59:30,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 20:59:30,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 73 transitions, 671 flow. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:59:30,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:59:30,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 20:59:30,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:59:30,650 INFO L124 PetriNetUnfolderBase]: 206/397 cut-off events. [2024-06-27 20:59:30,650 INFO L125 PetriNetUnfolderBase]: For 7776/7776 co-relation queries the response was YES. [2024-06-27 20:59:30,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2220 conditions, 397 events. 206/397 cut-off events. For 7776/7776 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1631 event pairs, 45 based on Foata normal form. 10/405 useless extension candidates. Maximal degree in co-relation 2173. Up to 288 conditions per place. [2024-06-27 20:59:30,651 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 51 selfloop transitions, 21 changer transitions 12/86 dead transitions. [2024-06-27 20:59:30,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 86 transitions, 905 flow [2024-06-27 20:59:30,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:59:30,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:59:30,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 90 transitions. [2024-06-27 20:59:30,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3 [2024-06-27 20:59:30,653 INFO L175 Difference]: Start difference. First operand has 95 places, 73 transitions, 671 flow. Second operand 10 states and 90 transitions. [2024-06-27 20:59:30,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 86 transitions, 905 flow [2024-06-27 20:59:30,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 86 transitions, 869 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 20:59:30,661 INFO L231 Difference]: Finished difference. Result has 99 places, 69 transitions, 632 flow [2024-06-27 20:59:30,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=632, PETRI_PLACES=99, PETRI_TRANSITIONS=69} [2024-06-27 20:59:30,661 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 70 predicate places. [2024-06-27 20:59:30,662 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 69 transitions, 632 flow [2024-06-27 20:59:30,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:59:30,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:59:30,662 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 20:59:30,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 20:59:30,662 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:59:30,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:59:30,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1590221235, now seen corresponding path program 3 times [2024-06-27 20:59:30,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:59:30,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451940637] [2024-06-27 20:59:30,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:59:30,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:59:30,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:59:33,266 INFO 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 20:59:33,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:59:33,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451940637] [2024-06-27 20:59:33,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451940637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:59:33,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:59:33,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:59:33,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451926042] [2024-06-27 20:59:33,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:59:33,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:59:33,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:59:33,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:59:33,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:59:33,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 20:59:33,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 69 transitions, 632 flow. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:59:33,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:59:33,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 20:59:33,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:59:33,869 INFO L124 PetriNetUnfolderBase]: 192/375 cut-off events. [2024-06-27 20:59:33,869 INFO L125 PetriNetUnfolderBase]: For 7876/7876 co-relation queries the response was YES. [2024-06-27 20:59:33,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2097 conditions, 375 events. 192/375 cut-off events. For 7876/7876 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1516 event pairs, 47 based on Foata normal form. 8/381 useless extension candidates. Maximal degree in co-relation 2049. Up to 286 conditions per place. [2024-06-27 20:59:33,871 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 49 selfloop transitions, 19 changer transitions 9/79 dead transitions. [2024-06-27 20:59:33,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 79 transitions, 820 flow [2024-06-27 20:59:33,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:59:33,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:59:33,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 80 transitions. [2024-06-27 20:59:33,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2962962962962963 [2024-06-27 20:59:33,885 INFO L175 Difference]: Start difference. First operand has 99 places, 69 transitions, 632 flow. Second operand 9 states and 80 transitions. [2024-06-27 20:59:33,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 79 transitions, 820 flow [2024-06-27 20:59:33,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 79 transitions, 767 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 20:59:33,893 INFO L231 Difference]: Finished difference. Result has 95 places, 66 transitions, 597 flow [2024-06-27 20:59:33,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=597, PETRI_PLACES=95, PETRI_TRANSITIONS=66} [2024-06-27 20:59:33,893 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 66 predicate places. [2024-06-27 20:59:33,894 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 66 transitions, 597 flow [2024-06-27 20:59:33,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:59:33,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:59:33,894 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 20:59:33,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 20:59:33,894 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:59:33,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:59:33,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1584864807, now seen corresponding path program 7 times [2024-06-27 20:59:33,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:59:33,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862264785] [2024-06-27 20:59:33,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:59:33,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:59:33,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:59:36,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:59:36,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:59:36,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862264785] [2024-06-27 20:59:36,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862264785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:59:36,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:59:36,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:59:36,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182320385] [2024-06-27 20:59:36,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:59:36,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:59:36,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:59:36,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:59:36,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:59:36,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 20:59:36,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 66 transitions, 597 flow. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:59:36,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:59:36,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 20:59:36,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:59:36,795 INFO L124 PetriNetUnfolderBase]: 200/395 cut-off events. [2024-06-27 20:59:36,796 INFO L125 PetriNetUnfolderBase]: For 9652/9652 co-relation queries the response was YES. [2024-06-27 20:59:36,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2145 conditions, 395 events. 200/395 cut-off events. For 9652/9652 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1654 event pairs, 57 based on Foata normal form. 16/409 useless extension candidates. Maximal degree in co-relation 2099. Up to 256 conditions per place. [2024-06-27 20:59:36,797 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 43 selfloop transitions, 11 changer transitions 22/78 dead transitions. [2024-06-27 20:59:36,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 78 transitions, 813 flow [2024-06-27 20:59:36,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:59:36,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:59:36,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 82 transitions. [2024-06-27 20:59:36,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3037037037037037 [2024-06-27 20:59:36,798 INFO L175 Difference]: Start difference. First operand has 95 places, 66 transitions, 597 flow. Second operand 9 states and 82 transitions. [2024-06-27 20:59:36,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 78 transitions, 813 flow [2024-06-27 20:59:36,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 78 transitions, 769 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 20:59:36,805 INFO L231 Difference]: Finished difference. Result has 91 places, 53 transitions, 455 flow [2024-06-27 20:59:36,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=553, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=455, PETRI_PLACES=91, PETRI_TRANSITIONS=53} [2024-06-27 20:59:36,805 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 62 predicate places. [2024-06-27 20:59:36,805 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 53 transitions, 455 flow [2024-06-27 20:59:36,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:59:36,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:59:36,805 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 20:59:36,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 20:59:36,806 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:59:36,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:59:36,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1590371337, now seen corresponding path program 8 times [2024-06-27 20:59:36,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:59:36,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632836808] [2024-06-27 20:59:36,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:59:36,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:59:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:59:39,359 INFO 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 20:59:39,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:59:39,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632836808] [2024-06-27 20:59:39,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632836808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:59:39,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:59:39,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:59:39,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614009599] [2024-06-27 20:59:39,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:59:39,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:59:39,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:59:39,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:59:39,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:59:39,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 20:59:39,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 53 transitions, 455 flow. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:59:39,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:59:39,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 20:59:39,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:59:39,989 INFO L124 PetriNetUnfolderBase]: 159/320 cut-off events. [2024-06-27 20:59:39,989 INFO L125 PetriNetUnfolderBase]: For 6995/6995 co-relation queries the response was YES. [2024-06-27 20:59:39,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1751 conditions, 320 events. 159/320 cut-off events. For 6995/6995 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1264 event pairs, 50 based on Foata normal form. 10/328 useless extension candidates. Maximal degree in co-relation 1707. Up to 225 conditions per place. [2024-06-27 20:59:39,991 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 40 selfloop transitions, 13 changer transitions 11/66 dead transitions. [2024-06-27 20:59:39,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 66 transitions, 649 flow [2024-06-27 20:59:40,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:59:40,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:59:40,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 85 transitions. [2024-06-27 20:59:40,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2833333333333333 [2024-06-27 20:59:40,006 INFO L175 Difference]: Start difference. First operand has 91 places, 53 transitions, 455 flow. Second operand 10 states and 85 transitions. [2024-06-27 20:59:40,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 66 transitions, 649 flow [2024-06-27 20:59:40,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 66 transitions, 569 flow, removed 16 selfloop flow, removed 13 redundant places. [2024-06-27 20:59:40,011 INFO L231 Difference]: Finished difference. Result has 81 places, 50 transitions, 396 flow [2024-06-27 20:59:40,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=396, PETRI_PLACES=81, PETRI_TRANSITIONS=50} [2024-06-27 20:59:40,013 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 52 predicate places. [2024-06-27 20:59:40,013 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 50 transitions, 396 flow [2024-06-27 20:59:40,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:59:40,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:59:40,014 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 20:59:40,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 20:59:40,014 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:59:40,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:59:40,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1590375057, now seen corresponding path program 9 times [2024-06-27 20:59:40,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:59:40,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014615266] [2024-06-27 20:59:40,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:59:40,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:59:40,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:59:42,071 INFO 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 20:59:42,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:59:42,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014615266] [2024-06-27 20:59:42,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014615266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:59:42,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:59:42,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:59:42,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987871821] [2024-06-27 20:59:42,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:59:42,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:59:42,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:59:42,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:59:42,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:59:42,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 20:59:42,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 50 transitions, 396 flow. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:59:42,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:59:42,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 20:59:42,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:59:42,679 INFO L124 PetriNetUnfolderBase]: 125/254 cut-off events. [2024-06-27 20:59:42,679 INFO L125 PetriNetUnfolderBase]: For 3155/3155 co-relation queries the response was YES. [2024-06-27 20:59:42,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1196 conditions, 254 events. 125/254 cut-off events. For 3155/3155 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 895 event pairs, 28 based on Foata normal form. 8/260 useless extension candidates. Maximal degree in co-relation 1157. Up to 169 conditions per place. [2024-06-27 20:59:42,680 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 37 selfloop transitions, 10 changer transitions 13/62 dead transitions. [2024-06-27 20:59:42,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 62 transitions, 560 flow [2024-06-27 20:59:42,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:59:42,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:59:42,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 81 transitions. [2024-06-27 20:59:42,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27 [2024-06-27 20:59:42,681 INFO L175 Difference]: Start difference. First operand has 81 places, 50 transitions, 396 flow. Second operand 10 states and 81 transitions. [2024-06-27 20:59:42,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 62 transitions, 560 flow [2024-06-27 20:59:42,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 62 transitions, 526 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 20:59:42,684 INFO L231 Difference]: Finished difference. Result has 79 places, 46 transitions, 361 flow [2024-06-27 20:59:42,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=361, PETRI_PLACES=79, PETRI_TRANSITIONS=46} [2024-06-27 20:59:42,684 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 50 predicate places. [2024-06-27 20:59:42,684 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 46 transitions, 361 flow [2024-06-27 20:59:42,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:59:42,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:59:42,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:59:42,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 20:59:42,685 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:59:42,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:59:42,685 INFO L85 PathProgramCache]: Analyzing trace with hash -802853223, now seen corresponding path program 4 times [2024-06-27 20:59:42,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:59:42,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234271235] [2024-06-27 20:59:42,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:59:42,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:59:42,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:59:44,814 INFO 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 20:59:44,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:59:44,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234271235] [2024-06-27 20:59:44,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234271235] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:59:44,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:59:44,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:59:44,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98046686] [2024-06-27 20:59:44,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:59:44,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:59:44,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:59:44,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:59:44,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:59:44,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 20:59:44,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 46 transitions, 361 flow. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:59:44,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:59:44,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 20:59:44,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:59:45,416 INFO L124 PetriNetUnfolderBase]: 109/218 cut-off events. [2024-06-27 20:59:45,416 INFO L125 PetriNetUnfolderBase]: For 2131/2131 co-relation queries the response was YES. [2024-06-27 20:59:45,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1053 conditions, 218 events. 109/218 cut-off events. For 2131/2131 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 703 event pairs, 28 based on Foata normal form. 2/218 useless extension candidates. Maximal degree in co-relation 1015. Up to 155 conditions per place. [2024-06-27 20:59:45,417 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 38 selfloop transitions, 15 changer transitions 0/55 dead transitions. [2024-06-27 20:59:45,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 55 transitions, 494 flow [2024-06-27 20:59:45,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:59:45,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:59:45,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 74 transitions. [2024-06-27 20:59:45,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2740740740740741 [2024-06-27 20:59:45,418 INFO L175 Difference]: Start difference. First operand has 79 places, 46 transitions, 361 flow. Second operand 9 states and 74 transitions. [2024-06-27 20:59:45,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 55 transitions, 494 flow [2024-06-27 20:59:45,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 55 transitions, 459 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-27 20:59:45,421 INFO L231 Difference]: Finished difference. Result has 70 places, 47 transitions, 373 flow [2024-06-27 20:59:45,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=373, PETRI_PLACES=70, PETRI_TRANSITIONS=47} [2024-06-27 20:59:45,421 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 41 predicate places. [2024-06-27 20:59:45,421 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 47 transitions, 373 flow [2024-06-27 20:59:45,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:59:45,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:59:45,422 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 20:59:45,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 20:59:45,422 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:59:45,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:59:45,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1059361173, now seen corresponding path program 5 times [2024-06-27 20:59:45,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:59:45,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289756269] [2024-06-27 20:59:45,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:59:45,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:59:45,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:59:47,561 INFO 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 20:59:47,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:59:47,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289756269] [2024-06-27 20:59:47,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289756269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:59:47,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:59:47,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:59:47,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647951916] [2024-06-27 20:59:47,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:59:47,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:59:47,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:59:47,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:59:47,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:59:47,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 20:59:47,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 47 transitions, 373 flow. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:59:47,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:59:47,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 20:59:47,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:59:48,164 INFO L124 PetriNetUnfolderBase]: 106/213 cut-off events. [2024-06-27 20:59:48,164 INFO L125 PetriNetUnfolderBase]: For 1393/1393 co-relation queries the response was YES. [2024-06-27 20:59:48,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 975 conditions, 213 events. 106/213 cut-off events. For 1393/1393 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 679 event pairs, 29 based on Foata normal form. 2/213 useless extension candidates. Maximal degree in co-relation 941. Up to 147 conditions per place. [2024-06-27 20:59:48,165 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 33 selfloop transitions, 19 changer transitions 0/54 dead transitions. [2024-06-27 20:59:48,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 54 transitions, 491 flow [2024-06-27 20:59:48,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:59:48,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:59:48,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 75 transitions. [2024-06-27 20:59:48,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2777777777777778 [2024-06-27 20:59:48,177 INFO L175 Difference]: Start difference. First operand has 70 places, 47 transitions, 373 flow. Second operand 9 states and 75 transitions. [2024-06-27 20:59:48,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 54 transitions, 491 flow [2024-06-27 20:59:48,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 54 transitions, 457 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 20:59:48,180 INFO L231 Difference]: Finished difference. Result has 72 places, 47 transitions, 382 flow [2024-06-27 20:59:48,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=382, PETRI_PLACES=72, PETRI_TRANSITIONS=47} [2024-06-27 20:59:48,180 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 43 predicate places. [2024-06-27 20:59:48,180 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 47 transitions, 382 flow [2024-06-27 20:59:48,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:59:48,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:59:48,181 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 20:59:48,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 20:59:48,181 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:59:48,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:59:48,181 INFO L85 PathProgramCache]: Analyzing trace with hash -612231847, now seen corresponding path program 10 times [2024-06-27 20:59:48,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:59:48,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373711255] [2024-06-27 20:59:48,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:59:48,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:59:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:59:50,617 INFO 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 20:59:50,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:59:50,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373711255] [2024-06-27 20:59:50,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373711255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:59:50,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:59:50,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:59:50,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110920700] [2024-06-27 20:59:50,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:59:50,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:59:50,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:59:50,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:59:50,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:59:50,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 20:59:50,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 47 transitions, 382 flow. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:59:50,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:59:50,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 20:59:50,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:59:51,224 INFO L124 PetriNetUnfolderBase]: 122/249 cut-off events. [2024-06-27 20:59:51,224 INFO L125 PetriNetUnfolderBase]: For 2120/2120 co-relation queries the response was YES. [2024-06-27 20:59:51,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1080 conditions, 249 events. 122/249 cut-off events. For 2120/2120 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 878 event pairs, 32 based on Foata normal form. 10/257 useless extension candidates. Maximal degree in co-relation 1045. Up to 145 conditions per place. [2024-06-27 20:59:51,225 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 34 selfloop transitions, 9 changer transitions 17/62 dead transitions. [2024-06-27 20:59:51,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 62 transitions, 565 flow [2024-06-27 20:59:51,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:59:51,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:59:51,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 84 transitions. [2024-06-27 20:59:51,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28 [2024-06-27 20:59:51,227 INFO L175 Difference]: Start difference. First operand has 72 places, 47 transitions, 382 flow. Second operand 10 states and 84 transitions. [2024-06-27 20:59:51,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 62 transitions, 565 flow [2024-06-27 20:59:51,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 62 transitions, 491 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 20:59:51,229 INFO L231 Difference]: Finished difference. Result has 74 places, 41 transitions, 289 flow [2024-06-27 20:59:51,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=289, PETRI_PLACES=74, PETRI_TRANSITIONS=41} [2024-06-27 20:59:51,230 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 45 predicate places. [2024-06-27 20:59:51,230 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 41 transitions, 289 flow [2024-06-27 20:59:51,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:59:51,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:59:51,230 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 20:59:51,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 20:59:51,230 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:59:51,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:59:51,231 INFO L85 PathProgramCache]: Analyzing trace with hash -793656453, now seen corresponding path program 6 times [2024-06-27 20:59:51,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:59:51,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440420599] [2024-06-27 20:59:51,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:59:51,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:59:51,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:59:53,408 INFO 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 20:59:53,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:59:53,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440420599] [2024-06-27 20:59:53,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440420599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:59:53,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:59:53,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:59:53,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103565448] [2024-06-27 20:59:53,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:59:53,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:59:53,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:59:53,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:59:53,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:59:53,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 20:59:53,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 41 transitions, 289 flow. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:59:53,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:59:53,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 20:59:53,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:59:53,874 INFO L124 PetriNetUnfolderBase]: 85/178 cut-off events. [2024-06-27 20:59:53,875 INFO L125 PetriNetUnfolderBase]: For 1208/1208 co-relation queries the response was YES. [2024-06-27 20:59:53,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 743 conditions, 178 events. 85/178 cut-off events. For 1208/1208 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 523 event pairs, 10 based on Foata normal form. 2/178 useless extension candidates. Maximal degree in co-relation 707. Up to 95 conditions per place. [2024-06-27 20:59:53,875 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 33 selfloop transitions, 15 changer transitions 0/50 dead transitions. [2024-06-27 20:59:53,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 50 transitions, 403 flow [2024-06-27 20:59:53,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:59:53,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:59:53,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 72 transitions. [2024-06-27 20:59:53,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26666666666666666 [2024-06-27 20:59:53,876 INFO L175 Difference]: Start difference. First operand has 74 places, 41 transitions, 289 flow. Second operand 9 states and 72 transitions. [2024-06-27 20:59:53,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 50 transitions, 403 flow [2024-06-27 20:59:53,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 50 transitions, 367 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 20:59:53,879 INFO L231 Difference]: Finished difference. Result has 70 places, 41 transitions, 287 flow [2024-06-27 20:59:53,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=287, PETRI_PLACES=70, PETRI_TRANSITIONS=41} [2024-06-27 20:59:53,879 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 41 predicate places. [2024-06-27 20:59:53,879 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 41 transitions, 287 flow [2024-06-27 20:59:53,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:59:53,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:59:53,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:59:53,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 20:59:53,879 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:59:53,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:59:53,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1879496066, now seen corresponding path program 1 times [2024-06-27 20:59:53,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:59:53,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538623850] [2024-06-27 20:59:53,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:59:53,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:59:53,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:59:56,853 INFO 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 20:59:56,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:59:56,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538623850] [2024-06-27 20:59:56,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538623850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:59:56,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:59:56,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:59:56,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874491439] [2024-06-27 20:59:56,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:59:56,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:59:56,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:59:56,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:59:56,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:59:56,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 20:59:56,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 41 transitions, 287 flow. Second operand has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:59:56,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:59:56,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 20:59:56,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:59:57,465 INFO L124 PetriNetUnfolderBase]: 93/198 cut-off events. [2024-06-27 20:59:57,465 INFO L125 PetriNetUnfolderBase]: For 1632/1632 co-relation queries the response was YES. [2024-06-27 20:59:57,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 792 conditions, 198 events. 93/198 cut-off events. For 1632/1632 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 626 event pairs, 21 based on Foata normal form. 6/202 useless extension candidates. Maximal degree in co-relation 757. Up to 113 conditions per place. [2024-06-27 20:59:57,466 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 29 selfloop transitions, 8 changer transitions 13/52 dead transitions. [2024-06-27 20:59:57,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 52 transitions, 411 flow [2024-06-27 20:59:57,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:59:57,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:59:57,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 74 transitions. [2024-06-27 20:59:57,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2740740740740741 [2024-06-27 20:59:57,477 INFO L175 Difference]: Start difference. First operand has 70 places, 41 transitions, 287 flow. Second operand 9 states and 74 transitions. [2024-06-27 20:59:57,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 52 transitions, 411 flow [2024-06-27 20:59:57,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 52 transitions, 364 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 20:59:57,484 INFO L231 Difference]: Finished difference. Result has 70 places, 34 transitions, 217 flow [2024-06-27 20:59:57,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=217, PETRI_PLACES=70, PETRI_TRANSITIONS=34} [2024-06-27 20:59:57,484 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 41 predicate places. [2024-06-27 20:59:57,485 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 34 transitions, 217 flow [2024-06-27 20:59:57,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:59:57,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:59:57,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:59:57,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 20:59:57,486 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:59:57,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:59:57,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1273594092, now seen corresponding path program 2 times [2024-06-27 20:59:57,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:59:57,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555552813] [2024-06-27 20:59:57,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:59:57,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:59:57,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:00:00,525 INFO 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 21:00:00,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:00:00,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555552813] [2024-06-27 21:00:00,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555552813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:00:00,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:00:00,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 21:00:00,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378362348] [2024-06-27 21:00:00,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:00:00,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 21:00:00,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:00:00,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 21:00:00,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 21:00:00,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 21:00:00,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 34 transitions, 217 flow. Second operand has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:00:00,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:00:00,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 21:00:00,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:00:01,192 INFO L124 PetriNetUnfolderBase]: 73/157 cut-off events. [2024-06-27 21:00:01,192 INFO L125 PetriNetUnfolderBase]: For 1524/1524 co-relation queries the response was YES. [2024-06-27 21:00:01,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 619 conditions, 157 events. 73/157 cut-off events. For 1524/1524 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 471 event pairs, 18 based on Foata normal form. 6/162 useless extension candidates. Maximal degree in co-relation 584. Up to 93 conditions per place. [2024-06-27 21:00:01,193 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 25 selfloop transitions, 8 changer transitions 11/46 dead transitions. [2024-06-27 21:00:01,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 46 transitions, 331 flow [2024-06-27 21:00:01,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 21:00:01,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 21:00:01,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 79 transitions. [2024-06-27 21:00:01,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2633333333333333 [2024-06-27 21:00:01,208 INFO L175 Difference]: Start difference. First operand has 70 places, 34 transitions, 217 flow. Second operand 10 states and 79 transitions. [2024-06-27 21:00:01,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 46 transitions, 331 flow [2024-06-27 21:00:01,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 46 transitions, 287 flow, removed 2 selfloop flow, removed 16 redundant places. [2024-06-27 21:00:01,210 INFO L231 Difference]: Finished difference. Result has 61 places, 31 transitions, 176 flow [2024-06-27 21:00:01,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=176, PETRI_PLACES=61, PETRI_TRANSITIONS=31} [2024-06-27 21:00:01,210 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 32 predicate places. [2024-06-27 21:00:01,210 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 31 transitions, 176 flow [2024-06-27 21:00:01,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:00:01,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:00:01,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:00:01,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 21:00:01,211 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 21:00:01,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:00:01,211 INFO L85 PathProgramCache]: Analyzing trace with hash 896401872, now seen corresponding path program 3 times [2024-06-27 21:00:01,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:00:01,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423871288] [2024-06-27 21:00:01,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:00:01,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:00:01,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:00:03,590 INFO 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 21:00:03,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:00:03,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423871288] [2024-06-27 21:00:03,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423871288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:00:03,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:00:03,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 21:00:03,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116362566] [2024-06-27 21:00:03,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:00:03,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 21:00:03,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:00:03,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 21:00:03,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 21:00:03,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 21:00:03,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 31 transitions, 176 flow. Second operand has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:00:03,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:00:03,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 21:00:03,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:00:04,151 INFO L124 PetriNetUnfolderBase]: 63/139 cut-off events. [2024-06-27 21:00:04,151 INFO L125 PetriNetUnfolderBase]: For 1284/1284 co-relation queries the response was YES. [2024-06-27 21:00:04,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 528 conditions, 139 events. 63/139 cut-off events. For 1284/1284 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 395 event pairs, 16 based on Foata normal form. 6/144 useless extension candidates. Maximal degree in co-relation 498. Up to 80 conditions per place. [2024-06-27 21:00:04,152 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 23 selfloop transitions, 11 changer transitions 8/44 dead transitions. [2024-06-27 21:00:04,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 44 transitions, 288 flow [2024-06-27 21:00:04,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 21:00:04,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 21:00:04,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 89 transitions. [2024-06-27 21:00:04,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24722222222222223 [2024-06-27 21:00:04,153 INFO L175 Difference]: Start difference. First operand has 61 places, 31 transitions, 176 flow. Second operand 12 states and 89 transitions. [2024-06-27 21:00:04,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 44 transitions, 288 flow [2024-06-27 21:00:04,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 44 transitions, 266 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 21:00:04,154 INFO L231 Difference]: Finished difference. Result has 59 places, 29 transitions, 168 flow [2024-06-27 21:00:04,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=168, PETRI_PLACES=59, PETRI_TRANSITIONS=29} [2024-06-27 21:00:04,155 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 30 predicate places. [2024-06-27 21:00:04,155 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 29 transitions, 168 flow [2024-06-27 21:00:04,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:00:04,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:00:04,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:00:04,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 21:00:04,155 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 21:00:04,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:00:04,155 INFO L85 PathProgramCache]: Analyzing trace with hash 881118146, now seen corresponding path program 4 times [2024-06-27 21:00:04,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:00:04,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223952498] [2024-06-27 21:00:04,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:00:04,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:00:04,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:00:07,553 INFO 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 21:00:07,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:00:07,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223952498] [2024-06-27 21:00:07,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223952498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:00:07,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:00:07,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 21:00:07,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566585556] [2024-06-27 21:00:07,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:00:07,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 21:00:07,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:00:07,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 21:00:07,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 21:00:07,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 21:00:07,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 29 transitions, 168 flow. Second operand has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:00:07,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:00:07,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 21:00:07,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:00:08,087 INFO L124 PetriNetUnfolderBase]: 54/124 cut-off events. [2024-06-27 21:00:08,087 INFO L125 PetriNetUnfolderBase]: For 932/932 co-relation queries the response was YES. [2024-06-27 21:00:08,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 444 conditions, 124 events. 54/124 cut-off events. For 932/932 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 324 event pairs, 21 based on Foata normal form. 8/131 useless extension candidates. Maximal degree in co-relation 416. Up to 60 conditions per place. [2024-06-27 21:00:08,088 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 17 selfloop transitions, 5 changer transitions 15/39 dead transitions. [2024-06-27 21:00:08,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 39 transitions, 264 flow [2024-06-27 21:00:08,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 21:00:08,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 21:00:08,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 77 transitions. [2024-06-27 21:00:08,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25666666666666665 [2024-06-27 21:00:08,089 INFO L175 Difference]: Start difference. First operand has 59 places, 29 transitions, 168 flow. Second operand 10 states and 77 transitions. [2024-06-27 21:00:08,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 39 transitions, 264 flow [2024-06-27 21:00:08,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 39 transitions, 228 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-27 21:00:08,090 INFO L231 Difference]: Finished difference. Result has 53 places, 21 transitions, 98 flow [2024-06-27 21:00:08,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=98, PETRI_PLACES=53, PETRI_TRANSITIONS=21} [2024-06-27 21:00:08,091 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 24 predicate places. [2024-06-27 21:00:08,091 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 21 transitions, 98 flow [2024-06-27 21:00:08,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:00:08,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:00:08,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:00:08,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 21:00:08,091 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 21:00:08,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:00:08,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1166455166, now seen corresponding path program 5 times [2024-06-27 21:00:08,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:00:08,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965381013] [2024-06-27 21:00:08,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:00:08,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:00:08,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:00:10,430 INFO 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 21:00:10,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:00:10,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965381013] [2024-06-27 21:00:10,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965381013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:00:10,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:00:10,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 21:00:10,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635474036] [2024-06-27 21:00:10,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:00:10,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 21:00:10,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:00:10,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 21:00:10,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 21:00:10,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-27 21:00:10,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 21 transitions, 98 flow. Second operand has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:00:10,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:00:10,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-27 21:00:10,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:00:10,912 INFO L124 PetriNetUnfolderBase]: 25/65 cut-off events. [2024-06-27 21:00:10,912 INFO L125 PetriNetUnfolderBase]: For 310/310 co-relation queries the response was YES. [2024-06-27 21:00:10,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 65 events. 25/65 cut-off events. For 310/310 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 95 event pairs, 0 based on Foata normal form. 6/70 useless extension candidates. Maximal degree in co-relation 172. Up to 24 conditions per place. [2024-06-27 21:00:10,913 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2024-06-27 21:00:10,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 29 transitions, 148 flow [2024-06-27 21:00:10,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 21:00:10,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 21:00:10,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 68 transitions. [2024-06-27 21:00:10,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.22666666666666666 [2024-06-27 21:00:10,913 INFO L175 Difference]: Start difference. First operand has 53 places, 21 transitions, 98 flow. Second operand 10 states and 68 transitions. [2024-06-27 21:00:10,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 29 transitions, 148 flow [2024-06-27 21:00:10,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 29 transitions, 118 flow, removed 1 selfloop flow, removed 15 redundant places. [2024-06-27 21:00:10,914 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2024-06-27 21:00:10,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2024-06-27 21:00:10,914 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2024-06-27 21:00:10,914 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2024-06-27 21:00:10,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:00:10,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-27 21:00:10,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-27 21:00:10,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-27 21:00:10,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-27 21:00:10,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 21:00:10,918 INFO L445 BasicCegarLoop]: Path program histogram: [10, 7, 6, 5, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:00:10,921 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 21:00:10,921 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 21:00:10,923 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-27 21:00:10,924 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-27 21:00:10,940 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 09:00:10 BasicIcfg [2024-06-27 21:00:10,940 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 21:00:10,941 INFO L158 Benchmark]: Toolchain (without parser) took 149369.83ms. Allocated memory was 178.3MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 146.8MB in the beginning and 827.1MB in the end (delta: -680.3MB). Peak memory consumption was 348.1MB. Max. memory is 16.1GB. [2024-06-27 21:00:10,941 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 178.3MB. Free memory is still 138.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 21:00:10,941 INFO L158 Benchmark]: Witness Parser took 0.13ms. Allocated memory is still 178.3MB. Free memory is still 107.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 21:00:10,941 INFO L158 Benchmark]: CACSL2BoogieTranslator took 478.90ms. Allocated memory is still 178.3MB. Free memory was 146.8MB in the beginning and 107.8MB in the end (delta: 39.0MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2024-06-27 21:00:10,942 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.05ms. Allocated memory is still 178.3MB. Free memory was 107.8MB in the beginning and 104.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 21:00:10,942 INFO L158 Benchmark]: Boogie Preprocessor took 57.48ms. Allocated memory is still 178.3MB. Free memory was 104.8MB in the beginning and 100.7MB in the end (delta: 4.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 21:00:10,942 INFO L158 Benchmark]: RCFGBuilder took 866.56ms. Allocated memory is still 178.3MB. Free memory was 100.7MB in the beginning and 80.8MB in the end (delta: 19.9MB). Peak memory consumption was 56.3MB. Max. memory is 16.1GB. [2024-06-27 21:00:10,942 INFO L158 Benchmark]: TraceAbstraction took 147919.11ms. Allocated memory was 178.3MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 80.8MB in the beginning and 827.1MB in the end (delta: -746.3MB). Peak memory consumption was 281.3MB. Max. memory is 16.1GB. [2024-06-27 21:00:10,943 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 178.3MB. Free memory is still 138.1MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.13ms. Allocated memory is still 178.3MB. Free memory is still 107.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 478.90ms. Allocated memory is still 178.3MB. Free memory was 146.8MB in the beginning and 107.8MB in the end (delta: 39.0MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.05ms. Allocated memory is still 178.3MB. Free memory was 107.8MB in the beginning and 104.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.48ms. Allocated memory is still 178.3MB. Free memory was 104.8MB in the beginning and 100.7MB in the end (delta: 4.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 866.56ms. Allocated memory is still 178.3MB. Free memory was 100.7MB in the beginning and 80.8MB in the end (delta: 19.9MB). Peak memory consumption was 56.3MB. Max. memory is 16.1GB. * TraceAbstraction took 147919.11ms. Allocated memory was 178.3MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 80.8MB in the beginning and 827.1MB in the end (delta: -746.3MB). Peak memory consumption was 281.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 828]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 829]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 47 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 147.8s, OverallIterations: 55, TraceHistogramMax: 1, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 30.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1538 SdHoareTripleChecker+Valid, 11.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1368 mSDsluCounter, 1397 SdHoareTripleChecker+Invalid, 9.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1191 mSDsCounter, 601 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11604 IncrementalHoareTripleChecker+Invalid, 12205 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 601 mSolverCounterUnsat, 206 mSDtfsCounter, 11604 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 601 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 599 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 830 ImplicationChecksByTransitivity, 46.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=931occurred in iteration=32, InterpolantAutomatonStates: 449, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 115.5s InterpolantComputationTime, 848 NumberOfCodeBlocks, 848 NumberOfCodeBlocksAsserted, 55 NumberOfCheckSat, 793 ConstructedInterpolants, 0 QuantifiedInterpolants, 79175 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 55 InterpolantComputations, 55 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-27 21:00:10,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE