./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe033_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/safe033_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cde23df1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe033_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-05-21_14-57-05.files/protection/safe033_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-cde23df-m [2024-06-14 13:36:36,834 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 13:36:36,901 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 13:36:36,905 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 13:36:36,906 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 13:36:36,930 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 13:36:36,932 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 13:36:36,932 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 13:36:36,933 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 13:36:36,937 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 13:36:36,937 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 13:36:36,937 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 13:36:36,938 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 13:36:36,940 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 13:36:36,940 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 13:36:36,940 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 13:36:36,940 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 13:36:36,941 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 13:36:36,941 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 13:36:36,941 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 13:36:36,941 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 13:36:36,942 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 13:36:36,942 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 13:36:36,942 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 13:36:36,942 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 13:36:36,943 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 13:36:36,943 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 13:36:36,943 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 13:36:36,944 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 13:36:36,944 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 13:36:36,945 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 13:36:36,945 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 13:36:36,945 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 13:36:36,945 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 13:36:36,946 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 13:36:36,946 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 13:36:36,946 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 13:36:36,946 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 13:36:36,946 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 13:36:36,946 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 13:36:36,947 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 13:36:36,947 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 13:36:36,947 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 13:36:36,947 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 13:36:37,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 13:36:37,208 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 13:36:37,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 13:36:37,211 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 13:36:37,212 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 13:36:37,212 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/safe033_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-14 13:36:37,441 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 13:36:37,441 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 13:36:37,442 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe033_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-14 13:36:38,500 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 13:36:38,668 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 13:36:38,668 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe033_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-14 13:36:38,679 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6730c338f/363e37d256b04266a4d8bc4ddafaae81/FLAGff26a6519 [2024-06-14 13:36:38,689 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6730c338f/363e37d256b04266a4d8bc4ddafaae81 [2024-06-14 13:36:38,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 13:36:38,691 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 13:36:38,691 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 13:36:38,691 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 13:36:38,695 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 13:36:38,696 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 01:36:37" (1/2) ... [2024-06-14 13:36:38,696 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70a02770 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:36:38, skipping insertion in model container [2024-06-14 13:36:38,696 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 01:36:37" (1/2) ... [2024-06-14 13:36:38,697 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6af54f0d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:36:38, skipping insertion in model container [2024-06-14 13:36:38,698 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 01:36:38" (2/2) ... [2024-06-14 13:36:38,698 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70a02770 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:36:38, skipping insertion in model container [2024-06-14 13:36:38,698 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 01:36:38" (2/2) ... [2024-06-14 13:36:38,698 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 13:36:38,737 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 13:36:38,738 INFO L97 edCorrectnessWitness]: Location invariant before [L806-L806] (((((((((((((! multithreaded || x$read_delayed == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || ((0 <= x$mem_tmp && x$mem_tmp <= 1) && (x$mem_tmp == 0 || x$mem_tmp == 1)))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1)))) && (! multithreaded || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1)))) && (! multithreaded || x$flush_delayed == (_Bool)0) [2024-06-14 13:36:38,738 INFO L97 edCorrectnessWitness]: Location invariant before [L807-L807] (((((((((((((! multithreaded || x$read_delayed == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || ((0 <= x$mem_tmp && x$mem_tmp <= 1) && (x$mem_tmp == 0 || x$mem_tmp == 1)))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1)))) && (! multithreaded || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1)))) && (! multithreaded || x$flush_delayed == (_Bool)0) [2024-06-14 13:36:38,738 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 13:36:38,738 INFO L106 edCorrectnessWitness]: ghost_update [L804-L804] multithreaded = 1; [2024-06-14 13:36:38,773 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 13:36:39,020 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 13:36:39,029 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 13:36:39,136 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 13:36:39,165 INFO L206 MainTranslator]: Completed translation [2024-06-14 13:36:39,166 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:36:39 WrapperNode [2024-06-14 13:36:39,166 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 13:36:39,167 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 13:36:39,167 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 13:36:39,167 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 13:36:39,172 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:36:39" (1/1) ... [2024-06-14 13:36:39,188 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:36:39" (1/1) ... [2024-06-14 13:36:39,206 INFO L138 Inliner]: procedures = 174, calls = 36, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 112 [2024-06-14 13:36:39,207 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 13:36:39,216 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 13:36:39,216 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 13:36:39,217 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 13:36:39,224 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:36:39" (1/1) ... [2024-06-14 13:36:39,228 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:36:39" (1/1) ... [2024-06-14 13:36:39,231 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:36:39" (1/1) ... [2024-06-14 13:36:39,245 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-14 13:36:39,247 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:36:39" (1/1) ... [2024-06-14 13:36:39,247 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:36:39" (1/1) ... [2024-06-14 13:36:39,255 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:36:39" (1/1) ... [2024-06-14 13:36:39,265 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:36:39" (1/1) ... [2024-06-14 13:36:39,266 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:36:39" (1/1) ... [2024-06-14 13:36:39,267 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:36:39" (1/1) ... [2024-06-14 13:36:39,269 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 13:36:39,270 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 13:36:39,270 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 13:36:39,270 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 13:36:39,272 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:36:39" (1/1) ... [2024-06-14 13:36:39,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 13:36:39,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 13:36:39,306 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-14 13:36:39,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-14 13:36:39,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 13:36:39,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 13:36:39,336 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-14 13:36:39,336 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-14 13:36:39,336 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-14 13:36:39,337 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-14 13:36:39,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 13:36:39,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 13:36:39,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 13:36:39,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 13:36:39,338 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 13:36:39,424 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 13:36:39,426 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 13:36:39,663 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 13:36:39,663 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 13:36:39,824 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 13:36:39,824 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 13:36:39,826 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 01:36:39 BoogieIcfgContainer [2024-06-14 13:36:39,826 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 13:36:39,828 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 13:36:39,828 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 13:36:39,831 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 13:36:39,831 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 01:36:37" (1/4) ... [2024-06-14 13:36:39,833 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5684d5de and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 01:36:39, skipping insertion in model container [2024-06-14 13:36:39,833 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 01:36:38" (2/4) ... [2024-06-14 13:36:39,833 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5684d5de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 01:36:39, skipping insertion in model container [2024-06-14 13:36:39,833 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:36:39" (3/4) ... [2024-06-14 13:36:39,833 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5684d5de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 01:36:39, skipping insertion in model container [2024-06-14 13:36:39,834 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 01:36:39" (4/4) ... [2024-06-14 13:36:39,835 INFO L112 eAbstractionObserver]: Analyzing ICFG safe033_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-14 13:36:39,847 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 13:36:39,848 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-14 13:36:39,848 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 13:36:39,889 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 13:36:39,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-14 13:36:39,940 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-14 13:36:39,941 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 13:36:39,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 29 events. 0/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-14 13:36:39,942 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-14 13:36:39,945 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-14 13:36:39,956 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 13:36:39,961 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;@7ba1f7c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 13:36:39,962 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-14 13:36:39,966 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 13:36:39,966 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-14 13:36:39,966 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 13:36:39,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:36:39,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 13:36:39,967 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:36:39,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:36:39,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1303796410, now seen corresponding path program 1 times [2024-06-14 13:36:39,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:36:39,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406003460] [2024-06-14 13:36:39,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:36:39,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:36:40,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:36:40,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:36:40,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:36:40,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406003460] [2024-06-14 13:36:40,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406003460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:36:40,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:36:40,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 13:36:40,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316959196] [2024-06-14 13:36:40,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:36:40,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 13:36:40,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:36:40,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 13:36:40,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 13:36:40,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-14 13:36:40,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:40,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:36:40,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-14 13:36:40,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:36:40,948 INFO L124 PetriNetUnfolderBase]: 131/254 cut-off events. [2024-06-14 13:36:40,948 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-14 13:36:40,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 512 conditions, 254 events. 131/254 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 963 event pairs, 75 based on Foata normal form. 1/249 useless extension candidates. Maximal degree in co-relation 498. Up to 235 conditions per place. [2024-06-14 13:36:40,954 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 22 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-14 13:36:40,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 117 flow [2024-06-14 13:36:40,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 13:36:40,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 13:36:40,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2024-06-14 13:36:40,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5806451612903226 [2024-06-14 13:36:40,966 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 54 transitions. [2024-06-14 13:36:40,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 117 flow [2024-06-14 13:36:40,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 13:36:40,970 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-14 13:36:40,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2024-06-14 13:36:40,974 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-14 13:36:40,974 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-14 13:36:40,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:40,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:36:40,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:36:40,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 13:36:40,976 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:36:40,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:36:40,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1182063719, now seen corresponding path program 1 times [2024-06-14 13:36:40,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:36:40,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499335542] [2024-06-14 13:36:40,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:36:40,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:36:41,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:36:41,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:36:41,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:36:41,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499335542] [2024-06-14 13:36:41,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499335542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:36:41,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:36:41,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 13:36:41,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484381769] [2024-06-14 13:36:41,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:36:41,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 13:36:41,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:36:41,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 13:36:41,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-14 13:36:41,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-14 13:36:41,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 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) [2024-06-14 13:36:41,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:36:41,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-14 13:36:41,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:36:41,528 INFO L124 PetriNetUnfolderBase]: 125/244 cut-off events. [2024-06-14 13:36:41,529 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2024-06-14 13:36:41,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 561 conditions, 244 events. 125/244 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 879 event pairs, 48 based on Foata normal form. 4/247 useless extension candidates. Maximal degree in co-relation 546. Up to 207 conditions per place. [2024-06-14 13:36:41,532 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 27 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-06-14 13:36:41,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 36 transitions, 163 flow [2024-06-14 13:36:41,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 13:36:41,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 13:36:41,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 70 transitions. [2024-06-14 13:36:41,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5645161290322581 [2024-06-14 13:36:41,535 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 70 transitions. [2024-06-14 13:36:41,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 36 transitions, 163 flow [2024-06-14 13:36:41,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 36 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 13:36:41,539 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-14 13:36:41,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-06-14 13:36:41,539 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-14 13:36:41,540 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-14 13:36:41,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 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) [2024-06-14 13:36:41,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:36:41,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:36:41,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 13:36:41,541 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:36:41,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:36:41,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1183318545, now seen corresponding path program 1 times [2024-06-14 13:36:41,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:36:41,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125570432] [2024-06-14 13:36:41,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:36:41,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:36:41,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:36:42,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:36:42,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:36:42,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125570432] [2024-06-14 13:36:42,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125570432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:36:42,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:36:42,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 13:36:42,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264161765] [2024-06-14 13:36:42,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:36:42,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 13:36:42,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:36:42,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 13:36:42,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-14 13:36:42,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 13:36:42,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 95 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:42,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:36:42,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 13:36:42,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:36:42,162 INFO L124 PetriNetUnfolderBase]: 123/241 cut-off events. [2024-06-14 13:36:42,162 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2024-06-14 13:36:42,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 622 conditions, 241 events. 123/241 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 877 event pairs, 62 based on Foata normal form. 1/241 useless extension candidates. Maximal degree in co-relation 605. Up to 219 conditions per place. [2024-06-14 13:36:42,164 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 24 selfloop transitions, 6 changer transitions 0/34 dead transitions. [2024-06-14 13:36:42,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 34 transitions, 173 flow [2024-06-14 13:36:42,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 13:36:42,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 13:36:42,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 69 transitions. [2024-06-14 13:36:42,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44516129032258067 [2024-06-14 13:36:42,165 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 5 states and 69 transitions. [2024-06-14 13:36:42,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 34 transitions, 173 flow [2024-06-14 13:36:42,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 34 transitions, 164 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-14 13:36:42,167 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 113 flow [2024-06-14 13:36:42,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, 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=113, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2024-06-14 13:36:42,168 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2024-06-14 13:36:42,168 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 113 flow [2024-06-14 13:36:42,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:42,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:36:42,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:36:42,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 13:36:42,169 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)] === [2024-06-14 13:36:42,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:36:42,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1987406221, now seen corresponding path program 1 times [2024-06-14 13:36:42,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:36:42,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848474578] [2024-06-14 13:36:42,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:36:42,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:36:42,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:36:42,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:36:42,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:36:42,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848474578] [2024-06-14 13:36:42,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848474578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:36:42,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:36:42,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 13:36:42,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798257918] [2024-06-14 13:36:42,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:36:42,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 13:36:42,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:36:42,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 13:36:42,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-14 13:36:42,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-14 13:36:42,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 113 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:42,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:36:42,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-14 13:36:42,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:36:43,069 INFO L124 PetriNetUnfolderBase]: 119/233 cut-off events. [2024-06-14 13:36:43,069 INFO L125 PetriNetUnfolderBase]: For 219/219 co-relation queries the response was YES. [2024-06-14 13:36:43,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 644 conditions, 233 events. 119/233 cut-off events. For 219/219 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 839 event pairs, 19 based on Foata normal form. 4/236 useless extension candidates. Maximal degree in co-relation 625. Up to 178 conditions per place. [2024-06-14 13:36:43,071 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 32 selfloop transitions, 8 changer transitions 0/44 dead transitions. [2024-06-14 13:36:43,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 44 transitions, 227 flow [2024-06-14 13:36:43,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:36:43,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:36:43,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 94 transitions. [2024-06-14 13:36:43,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5053763440860215 [2024-06-14 13:36:43,072 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 113 flow. Second operand 6 states and 94 transitions. [2024-06-14 13:36:43,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 44 transitions, 227 flow [2024-06-14 13:36:43,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 44 transitions, 216 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-14 13:36:43,074 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 127 flow [2024-06-14 13:36:43,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=127, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2024-06-14 13:36:43,075 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2024-06-14 13:36:43,075 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 127 flow [2024-06-14 13:36:43,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:43,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:36:43,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:36:43,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 13:36:43,076 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)] === [2024-06-14 13:36:43,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:36:43,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1971832074, now seen corresponding path program 1 times [2024-06-14 13:36:43,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:36:43,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656842967] [2024-06-14 13:36:43,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:36:43,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:36:43,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:36:43,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:36:43,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:36:43,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656842967] [2024-06-14 13:36:43,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656842967] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:36:43,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:36:43,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 13:36:43,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119573049] [2024-06-14 13:36:43,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:36:43,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 13:36:43,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:36:43,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 13:36:43,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 13:36:43,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 13:36:43,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 127 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:43,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:36:43,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 13:36:43,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:36:43,703 INFO L124 PetriNetUnfolderBase]: 135/263 cut-off events. [2024-06-14 13:36:43,703 INFO L125 PetriNetUnfolderBase]: For 402/402 co-relation queries the response was YES. [2024-06-14 13:36:43,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 783 conditions, 263 events. 135/263 cut-off events. For 402/402 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1029 event pairs, 32 based on Foata normal form. 3/263 useless extension candidates. Maximal degree in co-relation 763. Up to 195 conditions per place. [2024-06-14 13:36:43,705 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 29 selfloop transitions, 14 changer transitions 0/47 dead transitions. [2024-06-14 13:36:43,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 47 transitions, 281 flow [2024-06-14 13:36:43,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:36:43,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:36:43,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2024-06-14 13:36:43,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4423963133640553 [2024-06-14 13:36:43,707 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 127 flow. Second operand 7 states and 96 transitions. [2024-06-14 13:36:43,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 47 transitions, 281 flow [2024-06-14 13:36:43,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 47 transitions, 263 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-14 13:36:43,713 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 195 flow [2024-06-14 13:36:43,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=195, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2024-06-14 13:36:43,714 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 16 predicate places. [2024-06-14 13:36:43,714 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 195 flow [2024-06-14 13:36:43,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:43,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:36:43,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:36:43,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 13:36:43,715 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:36:43,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:36:43,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1065581966, now seen corresponding path program 1 times [2024-06-14 13:36:43,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:36:43,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359528885] [2024-06-14 13:36:43,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:36:43,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:36:43,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:36:44,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:36:44,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:36:44,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359528885] [2024-06-14 13:36:44,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359528885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:36:44,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:36:44,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 13:36:44,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231763629] [2024-06-14 13:36:44,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:36:44,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 13:36:44,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:36:44,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 13:36:44,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 13:36:44,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 13:36:44,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 195 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:44,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:36:44,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 13:36:44,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:36:44,263 INFO L124 PetriNetUnfolderBase]: 145/286 cut-off events. [2024-06-14 13:36:44,264 INFO L125 PetriNetUnfolderBase]: For 606/606 co-relation queries the response was YES. [2024-06-14 13:36:44,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 992 conditions, 286 events. 145/286 cut-off events. For 606/606 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1125 event pairs, 37 based on Foata normal form. 2/287 useless extension candidates. Maximal degree in co-relation 968. Up to 241 conditions per place. [2024-06-14 13:36:44,266 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 37 selfloop transitions, 12 changer transitions 0/53 dead transitions. [2024-06-14 13:36:44,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 53 transitions, 356 flow [2024-06-14 13:36:44,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:36:44,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:36:44,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 95 transitions. [2024-06-14 13:36:44,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4377880184331797 [2024-06-14 13:36:44,267 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 195 flow. Second operand 7 states and 95 transitions. [2024-06-14 13:36:44,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 53 transitions, 356 flow [2024-06-14 13:36:44,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 53 transitions, 348 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-14 13:36:44,270 INFO L231 Difference]: Finished difference. Result has 53 places, 43 transitions, 262 flow [2024-06-14 13:36:44,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=262, PETRI_PLACES=53, PETRI_TRANSITIONS=43} [2024-06-14 13:36:44,270 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 23 predicate places. [2024-06-14 13:36:44,271 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 262 flow [2024-06-14 13:36:44,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:44,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:36:44,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:36:44,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 13:36:44,271 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:36:44,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:36:44,272 INFO L85 PathProgramCache]: Analyzing trace with hash 997007408, now seen corresponding path program 2 times [2024-06-14 13:36:44,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:36:44,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667787077] [2024-06-14 13:36:44,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:36:44,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:36:44,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:36:44,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:36:44,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:36:44,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667787077] [2024-06-14 13:36:44,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667787077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:36:44,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:36:44,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 13:36:44,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697844877] [2024-06-14 13:36:44,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:36:44,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 13:36:44,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:36:44,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 13:36:44,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 13:36:44,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 13:36:44,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 262 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:44,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:36:44,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 13:36:44,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:36:44,875 INFO L124 PetriNetUnfolderBase]: 151/299 cut-off events. [2024-06-14 13:36:44,875 INFO L125 PetriNetUnfolderBase]: For 933/933 co-relation queries the response was YES. [2024-06-14 13:36:44,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1116 conditions, 299 events. 151/299 cut-off events. For 933/933 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1214 event pairs, 37 based on Foata normal form. 2/298 useless extension candidates. Maximal degree in co-relation 1088. Up to 251 conditions per place. [2024-06-14 13:36:44,877 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 36 selfloop transitions, 13 changer transitions 0/53 dead transitions. [2024-06-14 13:36:44,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 53 transitions, 409 flow [2024-06-14 13:36:44,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:36:44,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:36:44,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-06-14 13:36:44,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.423963133640553 [2024-06-14 13:36:44,879 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 262 flow. Second operand 7 states and 92 transitions. [2024-06-14 13:36:44,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 53 transitions, 409 flow [2024-06-14 13:36:44,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 53 transitions, 384 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-14 13:36:44,882 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 309 flow [2024-06-14 13:36:44,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=309, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2024-06-14 13:36:44,884 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 27 predicate places. [2024-06-14 13:36:44,884 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 309 flow [2024-06-14 13:36:44,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:44,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:36:44,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:36:44,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 13:36:44,885 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:36:44,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:36:44,885 INFO L85 PathProgramCache]: Analyzing trace with hash 997244558, now seen corresponding path program 3 times [2024-06-14 13:36:44,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:36:44,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834767395] [2024-06-14 13:36:44,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:36:44,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:36:44,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:36:45,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:36:45,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:36:45,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834767395] [2024-06-14 13:36:45,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834767395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:36:45,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:36:45,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 13:36:45,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562977525] [2024-06-14 13:36:45,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:36:45,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 13:36:45,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:36:45,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 13:36:45,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 13:36:45,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 13:36:45,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 309 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:45,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:36:45,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 13:36:45,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:36:45,410 INFO L124 PetriNetUnfolderBase]: 141/284 cut-off events. [2024-06-14 13:36:45,411 INFO L125 PetriNetUnfolderBase]: For 1122/1122 co-relation queries the response was YES. [2024-06-14 13:36:45,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1077 conditions, 284 events. 141/284 cut-off events. For 1122/1122 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1132 event pairs, 36 based on Foata normal form. 4/284 useless extension candidates. Maximal degree in co-relation 1047. Up to 195 conditions per place. [2024-06-14 13:36:45,413 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 32 selfloop transitions, 17 changer transitions 0/53 dead transitions. [2024-06-14 13:36:45,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 53 transitions, 427 flow [2024-06-14 13:36:45,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:36:45,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:36:45,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 85 transitions. [2024-06-14 13:36:45,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45698924731182794 [2024-06-14 13:36:45,415 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 309 flow. Second operand 6 states and 85 transitions. [2024-06-14 13:36:45,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 53 transitions, 427 flow [2024-06-14 13:36:45,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 53 transitions, 396 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-14 13:36:45,419 INFO L231 Difference]: Finished difference. Result has 59 places, 46 transitions, 319 flow [2024-06-14 13:36:45,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=319, PETRI_PLACES=59, PETRI_TRANSITIONS=46} [2024-06-14 13:36:45,422 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 29 predicate places. [2024-06-14 13:36:45,422 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 46 transitions, 319 flow [2024-06-14 13:36:45,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:45,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:36:45,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:36:45,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 13:36:45,423 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:36:45,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:36:45,423 INFO L85 PathProgramCache]: Analyzing trace with hash 997253486, now seen corresponding path program 1 times [2024-06-14 13:36:45,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:36:45,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586435424] [2024-06-14 13:36:45,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:36:45,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:36:45,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:36:46,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:36:46,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:36:46,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586435424] [2024-06-14 13:36:46,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586435424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:36:46,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:36:46,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:36:46,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010495294] [2024-06-14 13:36:46,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:36:46,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:36:46,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:36:46,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:36:46,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:36:46,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 13:36:46,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 319 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:46,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:36:46,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 13:36:46,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:36:46,209 INFO L124 PetriNetUnfolderBase]: 145/289 cut-off events. [2024-06-14 13:36:46,209 INFO L125 PetriNetUnfolderBase]: For 1230/1230 co-relation queries the response was YES. [2024-06-14 13:36:46,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1124 conditions, 289 events. 145/289 cut-off events. For 1230/1230 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1147 event pairs, 32 based on Foata normal form. 3/288 useless extension candidates. Maximal degree in co-relation 1093. Up to 193 conditions per place. [2024-06-14 13:36:46,211 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 31 selfloop transitions, 23 changer transitions 0/58 dead transitions. [2024-06-14 13:36:46,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 58 transitions, 469 flow [2024-06-14 13:36:46,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:36:46,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:36:46,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 98 transitions. [2024-06-14 13:36:46,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-14 13:36:46,212 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 319 flow. Second operand 7 states and 98 transitions. [2024-06-14 13:36:46,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 58 transitions, 469 flow [2024-06-14 13:36:46,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 58 transitions, 418 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-14 13:36:46,215 INFO L231 Difference]: Finished difference. Result has 61 places, 50 transitions, 349 flow [2024-06-14 13:36:46,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=349, PETRI_PLACES=61, PETRI_TRANSITIONS=50} [2024-06-14 13:36:46,216 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 31 predicate places. [2024-06-14 13:36:46,216 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 349 flow [2024-06-14 13:36:46,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:46,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:36:46,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:36:46,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 13:36:46,217 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:36:46,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:36:46,217 INFO L85 PathProgramCache]: Analyzing trace with hash 850088361, now seen corresponding path program 1 times [2024-06-14 13:36:46,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:36:46,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927041442] [2024-06-14 13:36:46,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:36:46,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:36:46,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:36:46,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:36:46,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:36:46,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927041442] [2024-06-14 13:36:46,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927041442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:36:46,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:36:46,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:36:46,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115279362] [2024-06-14 13:36:46,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:36:46,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:36:46,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:36:46,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:36:46,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:36:46,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 13:36:46,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 349 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:46,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:36:46,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 13:36:46,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:36:47,026 INFO L124 PetriNetUnfolderBase]: 146/296 cut-off events. [2024-06-14 13:36:47,026 INFO L125 PetriNetUnfolderBase]: For 1323/1323 co-relation queries the response was YES. [2024-06-14 13:36:47,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1197 conditions, 296 events. 146/296 cut-off events. For 1323/1323 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1197 event pairs, 32 based on Foata normal form. 4/296 useless extension candidates. Maximal degree in co-relation 1165. Up to 208 conditions per place. [2024-06-14 13:36:47,028 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 41 selfloop transitions, 22 changer transitions 0/67 dead transitions. [2024-06-14 13:36:47,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 67 transitions, 559 flow [2024-06-14 13:36:47,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:36:47,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:36:47,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-14 13:36:47,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4274193548387097 [2024-06-14 13:36:47,030 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 349 flow. Second operand 8 states and 106 transitions. [2024-06-14 13:36:47,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 67 transitions, 559 flow [2024-06-14 13:36:47,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 67 transitions, 496 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-14 13:36:47,033 INFO L231 Difference]: Finished difference. Result has 67 places, 59 transitions, 436 flow [2024-06-14 13:36:47,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=436, PETRI_PLACES=67, PETRI_TRANSITIONS=59} [2024-06-14 13:36:47,034 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 37 predicate places. [2024-06-14 13:36:47,034 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 59 transitions, 436 flow [2024-06-14 13:36:47,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:47,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:36:47,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:36:47,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 13:36:47,035 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:36:47,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:36:47,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1817326125, now seen corresponding path program 1 times [2024-06-14 13:36:47,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:36:47,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502905187] [2024-06-14 13:36:47,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:36:47,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:36:47,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:36:47,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:36:47,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:36:47,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502905187] [2024-06-14 13:36:47,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502905187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:36:47,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:36:47,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:36:47,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332815840] [2024-06-14 13:36:47,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:36:47,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:36:47,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:36:47,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:36:47,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:36:47,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 13:36:47,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 59 transitions, 436 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:47,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:36:47,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 13:36:47,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:36:47,817 INFO L124 PetriNetUnfolderBase]: 157/319 cut-off events. [2024-06-14 13:36:47,817 INFO L125 PetriNetUnfolderBase]: For 1438/1438 co-relation queries the response was YES. [2024-06-14 13:36:47,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1342 conditions, 319 events. 157/319 cut-off events. For 1438/1438 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1334 event pairs, 26 based on Foata normal form. 1/319 useless extension candidates. Maximal degree in co-relation 1306. Up to 251 conditions per place. [2024-06-14 13:36:47,819 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 55 selfloop transitions, 18 changer transitions 0/77 dead transitions. [2024-06-14 13:36:47,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 77 transitions, 650 flow [2024-06-14 13:36:47,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:36:47,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:36:47,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-14 13:36:47,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43548387096774194 [2024-06-14 13:36:47,821 INFO L175 Difference]: Start difference. First operand has 67 places, 59 transitions, 436 flow. Second operand 8 states and 108 transitions. [2024-06-14 13:36:47,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 77 transitions, 650 flow [2024-06-14 13:36:47,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 77 transitions, 612 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-14 13:36:47,825 INFO L231 Difference]: Finished difference. Result has 73 places, 66 transitions, 490 flow [2024-06-14 13:36:47,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=490, PETRI_PLACES=73, PETRI_TRANSITIONS=66} [2024-06-14 13:36:47,825 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 43 predicate places. [2024-06-14 13:36:47,825 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 66 transitions, 490 flow [2024-06-14 13:36:47,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:47,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:36:47,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:36:47,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 13:36:47,826 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:36:47,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:36:47,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1572690859, now seen corresponding path program 2 times [2024-06-14 13:36:47,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:36:47,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801623495] [2024-06-14 13:36:47,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:36:47,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:36:47,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:36:48,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:36:48,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:36:48,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801623495] [2024-06-14 13:36:48,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801623495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:36:48,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:36:48,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:36:48,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344009879] [2024-06-14 13:36:48,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:36:48,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:36:48,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:36:48,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:36:48,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:36:48,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 13:36:48,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 66 transitions, 490 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:48,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:36:48,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 13:36:48,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:36:48,644 INFO L124 PetriNetUnfolderBase]: 160/324 cut-off events. [2024-06-14 13:36:48,645 INFO L125 PetriNetUnfolderBase]: For 1611/1611 co-relation queries the response was YES. [2024-06-14 13:36:48,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1399 conditions, 324 events. 160/324 cut-off events. For 1611/1611 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1354 event pairs, 32 based on Foata normal form. 1/324 useless extension candidates. Maximal degree in co-relation 1361. Up to 256 conditions per place. [2024-06-14 13:36:48,647 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 57 selfloop transitions, 19 changer transitions 0/80 dead transitions. [2024-06-14 13:36:48,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 80 transitions, 692 flow [2024-06-14 13:36:48,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:36:48,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:36:48,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-14 13:36:48,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43548387096774194 [2024-06-14 13:36:48,649 INFO L175 Difference]: Start difference. First operand has 73 places, 66 transitions, 490 flow. Second operand 8 states and 108 transitions. [2024-06-14 13:36:48,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 80 transitions, 692 flow [2024-06-14 13:36:48,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 80 transitions, 665 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-14 13:36:48,655 INFO L231 Difference]: Finished difference. Result has 78 places, 68 transitions, 528 flow [2024-06-14 13:36:48,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=528, PETRI_PLACES=78, PETRI_TRANSITIONS=68} [2024-06-14 13:36:48,656 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 48 predicate places. [2024-06-14 13:36:48,656 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 68 transitions, 528 flow [2024-06-14 13:36:48,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:48,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:36:48,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:36:48,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 13:36:48,657 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:36:48,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:36:48,658 INFO L85 PathProgramCache]: Analyzing trace with hash -807099315, now seen corresponding path program 3 times [2024-06-14 13:36:48,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:36:48,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100211660] [2024-06-14 13:36:48,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:36:48,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:36:48,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:36:49,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:36:49,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:36:49,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100211660] [2024-06-14 13:36:49,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100211660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:36:49,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:36:49,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:36:49,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006375507] [2024-06-14 13:36:49,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:36:49,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:36:49,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:36:49,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:36:49,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:36:49,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 13:36:49,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 68 transitions, 528 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:49,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:36:49,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 13:36:49,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:36:49,446 INFO L124 PetriNetUnfolderBase]: 158/321 cut-off events. [2024-06-14 13:36:49,446 INFO L125 PetriNetUnfolderBase]: For 1925/1925 co-relation queries the response was YES. [2024-06-14 13:36:49,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1425 conditions, 321 events. 158/321 cut-off events. For 1925/1925 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1335 event pairs, 32 based on Foata normal form. 1/321 useless extension candidates. Maximal degree in co-relation 1386. Up to 247 conditions per place. [2024-06-14 13:36:49,449 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 54 selfloop transitions, 22 changer transitions 0/80 dead transitions. [2024-06-14 13:36:49,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 80 transitions, 728 flow [2024-06-14 13:36:49,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:36:49,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:36:49,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2024-06-14 13:36:49,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4423963133640553 [2024-06-14 13:36:49,450 INFO L175 Difference]: Start difference. First operand has 78 places, 68 transitions, 528 flow. Second operand 7 states and 96 transitions. [2024-06-14 13:36:49,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 80 transitions, 728 flow [2024-06-14 13:36:49,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 80 transitions, 673 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-14 13:36:49,458 INFO L231 Difference]: Finished difference. Result has 79 places, 70 transitions, 554 flow [2024-06-14 13:36:49,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=554, PETRI_PLACES=79, PETRI_TRANSITIONS=70} [2024-06-14 13:36:49,459 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 49 predicate places. [2024-06-14 13:36:49,459 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 70 transitions, 554 flow [2024-06-14 13:36:49,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:49,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:36:49,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:36:49,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 13:36:49,460 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:36:49,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:36:49,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1168428395, now seen corresponding path program 1 times [2024-06-14 13:36:49,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:36:49,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874851446] [2024-06-14 13:36:49,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:36:49,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:36:49,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:36:49,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:36:49,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:36:49,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874851446] [2024-06-14 13:36:49,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874851446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:36:49,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:36:49,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:36:49,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897861748] [2024-06-14 13:36:49,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:36:49,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:36:49,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:36:49,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:36:49,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:36:50,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 13:36:50,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 70 transitions, 554 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:50,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:36:50,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 13:36:50,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:36:50,174 INFO L124 PetriNetUnfolderBase]: 164/331 cut-off events. [2024-06-14 13:36:50,174 INFO L125 PetriNetUnfolderBase]: For 2244/2244 co-relation queries the response was YES. [2024-06-14 13:36:50,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1506 conditions, 331 events. 164/331 cut-off events. For 2244/2244 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1389 event pairs, 29 based on Foata normal form. 2/329 useless extension candidates. Maximal degree in co-relation 1466. Up to 230 conditions per place. [2024-06-14 13:36:50,176 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 53 selfloop transitions, 23 changer transitions 0/80 dead transitions. [2024-06-14 13:36:50,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 80 transitions, 749 flow [2024-06-14 13:36:50,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:36:50,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:36:50,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 97 transitions. [2024-06-14 13:36:50,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470046082949309 [2024-06-14 13:36:50,178 INFO L175 Difference]: Start difference. First operand has 79 places, 70 transitions, 554 flow. Second operand 7 states and 97 transitions. [2024-06-14 13:36:50,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 80 transitions, 749 flow [2024-06-14 13:36:50,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 80 transitions, 688 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-14 13:36:50,183 INFO L231 Difference]: Finished difference. Result has 81 places, 73 transitions, 576 flow [2024-06-14 13:36:50,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=576, PETRI_PLACES=81, PETRI_TRANSITIONS=73} [2024-06-14 13:36:50,183 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 51 predicate places. [2024-06-14 13:36:50,184 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 73 transitions, 576 flow [2024-06-14 13:36:50,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:50,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:36:50,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:36:50,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 13:36:50,184 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:36:50,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:36:50,185 INFO L85 PathProgramCache]: Analyzing trace with hash 582925901, now seen corresponding path program 2 times [2024-06-14 13:36:50,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:36:50,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845659365] [2024-06-14 13:36:50,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:36:50,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:36:50,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:36:50,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:36:50,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:36:50,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845659365] [2024-06-14 13:36:50,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845659365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:36:50,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:36:50,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:36:50,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216665662] [2024-06-14 13:36:50,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:36:50,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:36:50,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:36:50,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:36:50,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:36:50,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 13:36:50,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 73 transitions, 576 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:50,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:36:50,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 13:36:50,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:36:51,046 INFO L124 PetriNetUnfolderBase]: 162/328 cut-off events. [2024-06-14 13:36:51,046 INFO L125 PetriNetUnfolderBase]: For 1814/1814 co-relation queries the response was YES. [2024-06-14 13:36:51,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1466 conditions, 328 events. 162/328 cut-off events. For 1814/1814 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1395 event pairs, 29 based on Foata normal form. 1/325 useless extension candidates. Maximal degree in co-relation 1425. Up to 215 conditions per place. [2024-06-14 13:36:51,048 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 49 selfloop transitions, 30 changer transitions 0/83 dead transitions. [2024-06-14 13:36:51,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 83 transitions, 769 flow [2024-06-14 13:36:51,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:36:51,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:36:51,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 110 transitions. [2024-06-14 13:36:51,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4435483870967742 [2024-06-14 13:36:51,050 INFO L175 Difference]: Start difference. First operand has 81 places, 73 transitions, 576 flow. Second operand 8 states and 110 transitions. [2024-06-14 13:36:51,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 83 transitions, 769 flow [2024-06-14 13:36:51,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 83 transitions, 714 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-14 13:36:51,057 INFO L231 Difference]: Finished difference. Result has 84 places, 75 transitions, 609 flow [2024-06-14 13:36:51,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=609, PETRI_PLACES=84, PETRI_TRANSITIONS=75} [2024-06-14 13:36:51,058 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 54 predicate places. [2024-06-14 13:36:51,058 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 75 transitions, 609 flow [2024-06-14 13:36:51,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:51,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:36:51,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:36:51,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 13:36:51,058 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:36:51,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:36:51,059 INFO L85 PathProgramCache]: Analyzing trace with hash 502536332, now seen corresponding path program 1 times [2024-06-14 13:36:51,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:36:51,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157460699] [2024-06-14 13:36:51,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:36:51,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:36:51,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:36:51,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:36:51,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:36:51,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157460699] [2024-06-14 13:36:51,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157460699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:36:51,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:36:51,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:36:51,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751117462] [2024-06-14 13:36:51,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:36:51,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:36:51,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:36:51,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:36:51,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:36:51,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 13:36:51,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 609 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:51,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:36:51,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 13:36:51,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:36:51,869 INFO L124 PetriNetUnfolderBase]: 160/323 cut-off events. [2024-06-14 13:36:51,869 INFO L125 PetriNetUnfolderBase]: For 1911/1911 co-relation queries the response was YES. [2024-06-14 13:36:51,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1487 conditions, 323 events. 160/323 cut-off events. For 1911/1911 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1355 event pairs, 32 based on Foata normal form. 1/316 useless extension candidates. Maximal degree in co-relation 1445. Up to 198 conditions per place. [2024-06-14 13:36:51,872 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 43 selfloop transitions, 35 changer transitions 0/82 dead transitions. [2024-06-14 13:36:51,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 82 transitions, 793 flow [2024-06-14 13:36:51,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:36:51,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:36:51,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2024-06-14 13:36:51,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46236559139784944 [2024-06-14 13:36:51,874 INFO L175 Difference]: Start difference. First operand has 84 places, 75 transitions, 609 flow. Second operand 6 states and 86 transitions. [2024-06-14 13:36:51,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 82 transitions, 793 flow [2024-06-14 13:36:51,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 82 transitions, 735 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-14 13:36:51,884 INFO L231 Difference]: Finished difference. Result has 84 places, 77 transitions, 659 flow [2024-06-14 13:36:51,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=659, PETRI_PLACES=84, PETRI_TRANSITIONS=77} [2024-06-14 13:36:51,885 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 54 predicate places. [2024-06-14 13:36:51,885 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 77 transitions, 659 flow [2024-06-14 13:36:51,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:51,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:36:51,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:36:51,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 13:36:51,887 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:36:51,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:36:51,887 INFO L85 PathProgramCache]: Analyzing trace with hash 890835114, now seen corresponding path program 1 times [2024-06-14 13:36:51,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:36:51,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979178524] [2024-06-14 13:36:51,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:36:51,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:36:51,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:36:52,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:36:52,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:36:52,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979178524] [2024-06-14 13:36:52,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979178524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:36:52,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:36:52,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:36:52,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212893740] [2024-06-14 13:36:52,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:36:52,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:36:52,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:36:52,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:36:52,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:36:52,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 13:36:52,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 77 transitions, 659 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:52,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:36:52,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 13:36:52,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:36:52,889 INFO L124 PetriNetUnfolderBase]: 184/377 cut-off events. [2024-06-14 13:36:52,889 INFO L125 PetriNetUnfolderBase]: For 3503/3503 co-relation queries the response was YES. [2024-06-14 13:36:52,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1719 conditions, 377 events. 184/377 cut-off events. For 3503/3503 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1647 event pairs, 36 based on Foata normal form. 14/387 useless extension candidates. Maximal degree in co-relation 1676. Up to 208 conditions per place. [2024-06-14 13:36:52,891 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 54 selfloop transitions, 30 changer transitions 5/93 dead transitions. [2024-06-14 13:36:52,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 93 transitions, 910 flow [2024-06-14 13:36:52,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:36:52,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:36:52,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 126 transitions. [2024-06-14 13:36:52,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-14 13:36:52,893 INFO L175 Difference]: Start difference. First operand has 84 places, 77 transitions, 659 flow. Second operand 9 states and 126 transitions. [2024-06-14 13:36:52,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 93 transitions, 910 flow [2024-06-14 13:36:52,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 93 transitions, 835 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-14 13:36:52,898 INFO L231 Difference]: Finished difference. Result has 88 places, 77 transitions, 655 flow [2024-06-14 13:36:52,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=655, PETRI_PLACES=88, PETRI_TRANSITIONS=77} [2024-06-14 13:36:52,898 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 58 predicate places. [2024-06-14 13:36:52,899 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 77 transitions, 655 flow [2024-06-14 13:36:52,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:52,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:36:52,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:36:52,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 13:36:52,899 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:36:52,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:36:52,900 INFO L85 PathProgramCache]: Analyzing trace with hash 891161544, now seen corresponding path program 2 times [2024-06-14 13:36:52,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:36:52,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273457568] [2024-06-14 13:36:52,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:36:52,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:36:52,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:36:53,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:36:53,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:36:53,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273457568] [2024-06-14 13:36:53,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273457568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:36:53,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:36:53,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:36:53,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981709709] [2024-06-14 13:36:53,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:36:53,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:36:53,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:36:53,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:36:53,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:36:53,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 13:36:53,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 77 transitions, 655 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:53,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:36:53,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 13:36:53,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:36:53,824 INFO L124 PetriNetUnfolderBase]: 208/433 cut-off events. [2024-06-14 13:36:53,824 INFO L125 PetriNetUnfolderBase]: For 3464/3464 co-relation queries the response was YES. [2024-06-14 13:36:53,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2018 conditions, 433 events. 208/433 cut-off events. For 3464/3464 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1982 event pairs, 43 based on Foata normal form. 2/431 useless extension candidates. Maximal degree in co-relation 1975. Up to 169 conditions per place. [2024-06-14 13:36:53,827 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 61 selfloop transitions, 27 changer transitions 0/92 dead transitions. [2024-06-14 13:36:53,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 92 transitions, 921 flow [2024-06-14 13:36:53,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:36:53,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:36:53,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 112 transitions. [2024-06-14 13:36:53,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-14 13:36:53,829 INFO L175 Difference]: Start difference. First operand has 88 places, 77 transitions, 655 flow. Second operand 8 states and 112 transitions. [2024-06-14 13:36:53,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 92 transitions, 921 flow [2024-06-14 13:36:53,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 92 transitions, 858 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-14 13:36:53,835 INFO L231 Difference]: Finished difference. Result has 89 places, 77 transitions, 650 flow [2024-06-14 13:36:53,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=650, PETRI_PLACES=89, PETRI_TRANSITIONS=77} [2024-06-14 13:36:53,835 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 59 predicate places. [2024-06-14 13:36:53,835 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 77 transitions, 650 flow [2024-06-14 13:36:53,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:53,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:36:53,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:36:53,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 13:36:53,836 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:36:53,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:36:53,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1966175926, now seen corresponding path program 1 times [2024-06-14 13:36:53,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:36:53,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449782252] [2024-06-14 13:36:53,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:36:53,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:36:53,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:36:54,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:36:54,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:36:54,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449782252] [2024-06-14 13:36:54,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449782252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:36:54,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:36:54,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:36:54,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327962335] [2024-06-14 13:36:54,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:36:54,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:36:54,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:36:54,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:36:54,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:36:54,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 13:36:54,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 77 transitions, 650 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:54,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:36:54,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 13:36:54,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:36:54,591 INFO L124 PetriNetUnfolderBase]: 212/441 cut-off events. [2024-06-14 13:36:54,592 INFO L125 PetriNetUnfolderBase]: For 3774/3774 co-relation queries the response was YES. [2024-06-14 13:36:54,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2070 conditions, 441 events. 212/441 cut-off events. For 3774/3774 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2013 event pairs, 44 based on Foata normal form. 2/442 useless extension candidates. Maximal degree in co-relation 2026. Up to 374 conditions per place. [2024-06-14 13:36:54,594 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 71 selfloop transitions, 16 changer transitions 0/91 dead transitions. [2024-06-14 13:36:54,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 91 transitions, 868 flow [2024-06-14 13:36:54,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:36:54,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:36:54,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-14 13:36:54,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-14 13:36:54,595 INFO L175 Difference]: Start difference. First operand has 89 places, 77 transitions, 650 flow. Second operand 9 states and 117 transitions. [2024-06-14 13:36:54,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 91 transitions, 868 flow [2024-06-14 13:36:54,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 91 transitions, 795 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-14 13:36:54,601 INFO L231 Difference]: Finished difference. Result has 91 places, 78 transitions, 625 flow [2024-06-14 13:36:54,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=625, PETRI_PLACES=91, PETRI_TRANSITIONS=78} [2024-06-14 13:36:54,602 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 61 predicate places. [2024-06-14 13:36:54,602 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 78 transitions, 625 flow [2024-06-14 13:36:54,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:54,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:36:54,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:36:54,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 13:36:54,602 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:36:54,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:36:54,603 INFO L85 PathProgramCache]: Analyzing trace with hash 531458732, now seen corresponding path program 2 times [2024-06-14 13:36:54,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:36:54,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294798599] [2024-06-14 13:36:54,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:36:54,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:36:54,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:36:55,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:36:55,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:36:55,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294798599] [2024-06-14 13:36:55,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294798599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:36:55,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:36:55,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:36:55,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129735625] [2024-06-14 13:36:55,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:36:55,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:36:55,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:36:55,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:36:55,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:36:55,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 13:36:55,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 78 transitions, 625 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:55,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:36:55,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 13:36:55,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:36:55,485 INFO L124 PetriNetUnfolderBase]: 185/390 cut-off events. [2024-06-14 13:36:55,486 INFO L125 PetriNetUnfolderBase]: For 2550/2550 co-relation queries the response was YES. [2024-06-14 13:36:55,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1666 conditions, 390 events. 185/390 cut-off events. For 2550/2550 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1731 event pairs, 27 based on Foata normal form. 2/391 useless extension candidates. Maximal degree in co-relation 1622. Up to 301 conditions per place. [2024-06-14 13:36:55,489 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 73 selfloop transitions, 18 changer transitions 0/95 dead transitions. [2024-06-14 13:36:55,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 95 transitions, 863 flow [2024-06-14 13:36:55,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:36:55,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:36:55,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-14 13:36:55,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-06-14 13:36:55,490 INFO L175 Difference]: Start difference. First operand has 91 places, 78 transitions, 625 flow. Second operand 9 states and 120 transitions. [2024-06-14 13:36:55,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 95 transitions, 863 flow [2024-06-14 13:36:55,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 95 transitions, 825 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-14 13:36:55,498 INFO L231 Difference]: Finished difference. Result has 94 places, 80 transitions, 649 flow [2024-06-14 13:36:55,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=587, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=649, PETRI_PLACES=94, PETRI_TRANSITIONS=80} [2024-06-14 13:36:55,499 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 64 predicate places. [2024-06-14 13:36:55,499 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 80 transitions, 649 flow [2024-06-14 13:36:55,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:55,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:36:55,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:36:55,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 13:36:55,499 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:36:55,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:36:55,500 INFO L85 PathProgramCache]: Analyzing trace with hash -433465258, now seen corresponding path program 1 times [2024-06-14 13:36:55,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:36:55,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096542970] [2024-06-14 13:36:55,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:36:55,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:36:55,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:36:56,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:36:56,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:36:56,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096542970] [2024-06-14 13:36:56,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096542970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:36:56,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:36:56,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:36:56,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764492636] [2024-06-14 13:36:56,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:36:56,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:36:56,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:36:56,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:36:56,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:36:56,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 13:36:56,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 80 transitions, 649 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:56,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:36:56,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 13:36:56,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:36:56,411 INFO L124 PetriNetUnfolderBase]: 188/393 cut-off events. [2024-06-14 13:36:56,411 INFO L125 PetriNetUnfolderBase]: For 2810/2810 co-relation queries the response was YES. [2024-06-14 13:36:56,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1719 conditions, 393 events. 188/393 cut-off events. For 2810/2810 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1770 event pairs, 36 based on Foata normal form. 1/386 useless extension candidates. Maximal degree in co-relation 1673. Up to 274 conditions per place. [2024-06-14 13:36:56,413 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 51 selfloop transitions, 33 changer transitions 0/88 dead transitions. [2024-06-14 13:36:56,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 88 transitions, 853 flow [2024-06-14 13:36:56,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:36:56,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:36:56,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 99 transitions. [2024-06-14 13:36:56,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45622119815668205 [2024-06-14 13:36:56,415 INFO L175 Difference]: Start difference. First operand has 94 places, 80 transitions, 649 flow. Second operand 7 states and 99 transitions. [2024-06-14 13:36:56,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 88 transitions, 853 flow [2024-06-14 13:36:56,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 88 transitions, 811 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-14 13:36:56,421 INFO L231 Difference]: Finished difference. Result has 95 places, 82 transitions, 708 flow [2024-06-14 13:36:56,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=708, PETRI_PLACES=95, PETRI_TRANSITIONS=82} [2024-06-14 13:36:56,422 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 65 predicate places. [2024-06-14 13:36:56,422 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 82 transitions, 708 flow [2024-06-14 13:36:56,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:56,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:36:56,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:36:56,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 13:36:56,422 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:36:56,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:36:56,423 INFO L85 PathProgramCache]: Analyzing trace with hash -27255942, now seen corresponding path program 3 times [2024-06-14 13:36:56,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:36:56,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46547033] [2024-06-14 13:36:56,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:36:56,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:36:56,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:36:57,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:36:57,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:36:57,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46547033] [2024-06-14 13:36:57,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46547033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:36:57,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:36:57,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:36:57,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408442597] [2024-06-14 13:36:57,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:36:57,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:36:57,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:36:57,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:36:57,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:36:57,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 13:36:57,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 82 transitions, 708 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:57,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:36:57,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 13:36:57,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:36:57,220 INFO L124 PetriNetUnfolderBase]: 192/405 cut-off events. [2024-06-14 13:36:57,220 INFO L125 PetriNetUnfolderBase]: For 3165/3165 co-relation queries the response was YES. [2024-06-14 13:36:57,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1834 conditions, 405 events. 192/405 cut-off events. For 3165/3165 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1827 event pairs, 37 based on Foata normal form. 2/406 useless extension candidates. Maximal degree in co-relation 1787. Up to 336 conditions per place. [2024-06-14 13:36:57,237 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 76 selfloop transitions, 16 changer transitions 0/96 dead transitions. [2024-06-14 13:36:57,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 96 transitions, 942 flow [2024-06-14 13:36:57,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:36:57,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:36:57,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-14 13:36:57,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4157706093189964 [2024-06-14 13:36:57,238 INFO L175 Difference]: Start difference. First operand has 95 places, 82 transitions, 708 flow. Second operand 9 states and 116 transitions. [2024-06-14 13:36:57,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 96 transitions, 942 flow [2024-06-14 13:36:57,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 96 transitions, 863 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-14 13:36:57,246 INFO L231 Difference]: Finished difference. Result has 100 places, 84 transitions, 692 flow [2024-06-14 13:36:57,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=692, PETRI_PLACES=100, PETRI_TRANSITIONS=84} [2024-06-14 13:36:57,246 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 70 predicate places. [2024-06-14 13:36:57,246 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 84 transitions, 692 flow [2024-06-14 13:36:57,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:57,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:36:57,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:36:57,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 13:36:57,247 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:36:57,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:36:57,247 INFO L85 PathProgramCache]: Analyzing trace with hash -238778354, now seen corresponding path program 2 times [2024-06-14 13:36:57,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:36:57,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645328529] [2024-06-14 13:36:57,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:36:57,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:36:57,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:36:57,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:36:57,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:36:57,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645328529] [2024-06-14 13:36:57,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645328529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:36:57,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:36:57,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:36:57,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592606087] [2024-06-14 13:36:57,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:36:57,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:36:57,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:36:57,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:36:57,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:36:58,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 13:36:58,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 84 transitions, 692 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:58,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:36:58,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 13:36:58,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:36:58,265 INFO L124 PetriNetUnfolderBase]: 198/415 cut-off events. [2024-06-14 13:36:58,265 INFO L125 PetriNetUnfolderBase]: For 3377/3377 co-relation queries the response was YES. [2024-06-14 13:36:58,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1864 conditions, 415 events. 198/415 cut-off events. For 3377/3377 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1895 event pairs, 40 based on Foata normal form. 1/412 useless extension candidates. Maximal degree in co-relation 1815. Up to 297 conditions per place. [2024-06-14 13:36:58,268 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 59 selfloop transitions, 33 changer transitions 0/96 dead transitions. [2024-06-14 13:36:58,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 96 transitions, 934 flow [2024-06-14 13:36:58,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:36:58,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:36:58,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-14 13:36:58,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-06-14 13:36:58,269 INFO L175 Difference]: Start difference. First operand has 100 places, 84 transitions, 692 flow. Second operand 9 states and 120 transitions. [2024-06-14 13:36:58,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 96 transitions, 934 flow [2024-06-14 13:36:58,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 96 transitions, 892 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-14 13:36:58,277 INFO L231 Difference]: Finished difference. Result has 103 places, 88 transitions, 765 flow [2024-06-14 13:36:58,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=765, PETRI_PLACES=103, PETRI_TRANSITIONS=88} [2024-06-14 13:36:58,277 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 73 predicate places. [2024-06-14 13:36:58,277 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 88 transitions, 765 flow [2024-06-14 13:36:58,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:58,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:36:58,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:36:58,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 13:36:58,278 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:36:58,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:36:58,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1389216368, now seen corresponding path program 4 times [2024-06-14 13:36:58,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:36:58,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184880656] [2024-06-14 13:36:58,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:36:58,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:36:58,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:36:58,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:36:58,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:36:58,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184880656] [2024-06-14 13:36:58,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184880656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:36:58,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:36:58,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:36:58,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658226151] [2024-06-14 13:36:58,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:36:58,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:36:58,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:36:58,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:36:58,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:36:58,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 13:36:58,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 88 transitions, 765 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:58,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:36:58,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 13:36:58,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:36:59,143 INFO L124 PetriNetUnfolderBase]: 207/438 cut-off events. [2024-06-14 13:36:59,144 INFO L125 PetriNetUnfolderBase]: For 3927/3927 co-relation queries the response was YES. [2024-06-14 13:36:59,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2002 conditions, 438 events. 207/438 cut-off events. For 3927/3927 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2064 event pairs, 33 based on Foata normal form. 2/439 useless extension candidates. Maximal degree in co-relation 1952. Up to 343 conditions per place. [2024-06-14 13:36:59,146 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 83 selfloop transitions, 19 changer transitions 0/106 dead transitions. [2024-06-14 13:36:59,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 106 transitions, 1033 flow [2024-06-14 13:36:59,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:36:59,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:36:59,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-14 13:36:59,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-06-14 13:36:59,148 INFO L175 Difference]: Start difference. First operand has 103 places, 88 transitions, 765 flow. Second operand 9 states and 120 transitions. [2024-06-14 13:36:59,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 106 transitions, 1033 flow [2024-06-14 13:36:59,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 106 transitions, 948 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-14 13:36:59,157 INFO L231 Difference]: Finished difference. Result has 107 places, 90 transitions, 750 flow [2024-06-14 13:36:59,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=750, PETRI_PLACES=107, PETRI_TRANSITIONS=90} [2024-06-14 13:36:59,157 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 77 predicate places. [2024-06-14 13:36:59,157 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 90 transitions, 750 flow [2024-06-14 13:36:59,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:59,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:36:59,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:36:59,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-14 13:36:59,158 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:36:59,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:36:59,158 INFO L85 PathProgramCache]: Analyzing trace with hash 759496854, now seen corresponding path program 5 times [2024-06-14 13:36:59,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:36:59,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871255613] [2024-06-14 13:36:59,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:36:59,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:36:59,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:36:59,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:36:59,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:36:59,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871255613] [2024-06-14 13:36:59,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871255613] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:36:59,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:36:59,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:36:59,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248563666] [2024-06-14 13:36:59,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:36:59,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:36:59,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:36:59,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:36:59,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:36:59,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 13:36:59,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 90 transitions, 750 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:59,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:36:59,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 13:36:59,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:37:00,044 INFO L124 PetriNetUnfolderBase]: 211/446 cut-off events. [2024-06-14 13:37:00,045 INFO L125 PetriNetUnfolderBase]: For 4357/4357 co-relation queries the response was YES. [2024-06-14 13:37:00,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2038 conditions, 446 events. 211/446 cut-off events. For 4357/4357 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2113 event pairs, 40 based on Foata normal form. 2/447 useless extension candidates. Maximal degree in co-relation 1986. Up to 360 conditions per place. [2024-06-14 13:37:00,048 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 81 selfloop transitions, 20 changer transitions 0/105 dead transitions. [2024-06-14 13:37:00,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 105 transitions, 1006 flow [2024-06-14 13:37:00,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:37:00,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:37:00,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-14 13:37:00,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4265232974910394 [2024-06-14 13:37:00,049 INFO L175 Difference]: Start difference. First operand has 107 places, 90 transitions, 750 flow. Second operand 9 states and 119 transitions. [2024-06-14 13:37:00,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 105 transitions, 1006 flow [2024-06-14 13:37:00,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 105 transitions, 956 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-14 13:37:00,059 INFO L231 Difference]: Finished difference. Result has 110 places, 91 transitions, 764 flow [2024-06-14 13:37:00,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=764, PETRI_PLACES=110, PETRI_TRANSITIONS=91} [2024-06-14 13:37:00,060 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 80 predicate places. [2024-06-14 13:37:00,060 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 91 transitions, 764 flow [2024-06-14 13:37:00,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:00,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:37:00,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:37:00,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-14 13:37:00,060 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:37:00,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:37:00,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1413104648, now seen corresponding path program 6 times [2024-06-14 13:37:00,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:37:00,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160361927] [2024-06-14 13:37:00,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:37:00,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:37:00,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:37:00,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:37:00,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:37:00,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160361927] [2024-06-14 13:37:00,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160361927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:37:00,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:37:00,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:37:00,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480971875] [2024-06-14 13:37:00,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:37:00,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:37:00,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:37:00,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:37:00,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:37:00,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 13:37:00,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 91 transitions, 764 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:00,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:37:00,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 13:37:00,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:37:00,904 INFO L124 PetriNetUnfolderBase]: 220/465 cut-off events. [2024-06-14 13:37:00,904 INFO L125 PetriNetUnfolderBase]: For 4735/4735 co-relation queries the response was YES. [2024-06-14 13:37:00,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2127 conditions, 465 events. 220/465 cut-off events. For 4735/4735 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2255 event pairs, 17 based on Foata normal form. 2/466 useless extension candidates. Maximal degree in co-relation 2074. Up to 335 conditions per place. [2024-06-14 13:37:00,928 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 83 selfloop transitions, 22 changer transitions 0/109 dead transitions. [2024-06-14 13:37:00,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 109 transitions, 1042 flow [2024-06-14 13:37:00,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:37:00,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:37:00,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-14 13:37:00,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2024-06-14 13:37:00,929 INFO L175 Difference]: Start difference. First operand has 110 places, 91 transitions, 764 flow. Second operand 9 states and 118 transitions. [2024-06-14 13:37:00,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 109 transitions, 1042 flow [2024-06-14 13:37:00,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 109 transitions, 988 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-14 13:37:00,939 INFO L231 Difference]: Finished difference. Result has 112 places, 93 transitions, 788 flow [2024-06-14 13:37:00,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=710, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=788, PETRI_PLACES=112, PETRI_TRANSITIONS=93} [2024-06-14 13:37:00,940 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 82 predicate places. [2024-06-14 13:37:00,940 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 93 transitions, 788 flow [2024-06-14 13:37:00,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:00,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:37:00,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:37:00,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-14 13:37:00,941 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:37:00,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:37:00,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1653590858, now seen corresponding path program 7 times [2024-06-14 13:37:00,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:37:00,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116559799] [2024-06-14 13:37:00,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:37:00,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:37:00,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:37:01,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:37:01,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:37:01,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116559799] [2024-06-14 13:37:01,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116559799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:37:01,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:37:01,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:37:01,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996354667] [2024-06-14 13:37:01,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:37:01,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:37:01,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:37:01,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:37:01,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:37:01,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 13:37:01,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 93 transitions, 788 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:01,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:37:01,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 13:37:01,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:37:01,805 INFO L124 PetriNetUnfolderBase]: 224/471 cut-off events. [2024-06-14 13:37:01,805 INFO L125 PetriNetUnfolderBase]: For 5288/5288 co-relation queries the response was YES. [2024-06-14 13:37:01,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2188 conditions, 471 events. 224/471 cut-off events. For 5288/5288 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2290 event pairs, 41 based on Foata normal form. 2/468 useless extension candidates. Maximal degree in co-relation 2134. Up to 378 conditions per place. [2024-06-14 13:37:01,809 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 84 selfloop transitions, 19 changer transitions 0/107 dead transitions. [2024-06-14 13:37:01,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 107 transitions, 1058 flow [2024-06-14 13:37:01,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:37:01,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:37:01,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-14 13:37:01,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-14 13:37:01,811 INFO L175 Difference]: Start difference. First operand has 112 places, 93 transitions, 788 flow. Second operand 9 states and 117 transitions. [2024-06-14 13:37:01,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 107 transitions, 1058 flow [2024-06-14 13:37:01,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 107 transitions, 978 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-14 13:37:01,822 INFO L231 Difference]: Finished difference. Result has 113 places, 95 transitions, 784 flow [2024-06-14 13:37:01,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=784, PETRI_PLACES=113, PETRI_TRANSITIONS=95} [2024-06-14 13:37:01,823 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 83 predicate places. [2024-06-14 13:37:01,823 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 95 transitions, 784 flow [2024-06-14 13:37:01,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:01,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:37:01,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:37:01,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-14 13:37:01,824 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:37:01,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:37:01,825 INFO L85 PathProgramCache]: Analyzing trace with hash 187298764, now seen corresponding path program 8 times [2024-06-14 13:37:01,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:37:01,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986406704] [2024-06-14 13:37:01,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:37:01,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:37:01,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:37:02,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:37:02,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:37:02,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986406704] [2024-06-14 13:37:02,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986406704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:37:02,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:37:02,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:37:02,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237702495] [2024-06-14 13:37:02,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:37:02,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:37:02,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:37:02,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:37:02,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:37:02,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 13:37:02,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 95 transitions, 784 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:02,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:37:02,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 13:37:02,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:37:02,754 INFO L124 PetriNetUnfolderBase]: 228/481 cut-off events. [2024-06-14 13:37:02,754 INFO L125 PetriNetUnfolderBase]: For 5658/5658 co-relation queries the response was YES. [2024-06-14 13:37:02,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2197 conditions, 481 events. 228/481 cut-off events. For 5658/5658 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2349 event pairs, 42 based on Foata normal form. 2/482 useless extension candidates. Maximal degree in co-relation 2144. Up to 377 conditions per place. [2024-06-14 13:37:02,759 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 78 selfloop transitions, 26 changer transitions 0/108 dead transitions. [2024-06-14 13:37:02,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 108 transitions, 1046 flow [2024-06-14 13:37:02,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:37:02,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:37:02,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2024-06-14 13:37:02,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4314516129032258 [2024-06-14 13:37:02,761 INFO L175 Difference]: Start difference. First operand has 113 places, 95 transitions, 784 flow. Second operand 8 states and 107 transitions. [2024-06-14 13:37:02,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 108 transitions, 1046 flow [2024-06-14 13:37:02,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 108 transitions, 992 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-14 13:37:02,778 INFO L231 Difference]: Finished difference. Result has 115 places, 96 transitions, 816 flow [2024-06-14 13:37:02,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=816, PETRI_PLACES=115, PETRI_TRANSITIONS=96} [2024-06-14 13:37:02,785 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 85 predicate places. [2024-06-14 13:37:02,786 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 96 transitions, 816 flow [2024-06-14 13:37:02,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:02,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:37:02,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:37:02,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-14 13:37:02,786 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:37:02,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:37:02,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1937378122, now seen corresponding path program 9 times [2024-06-14 13:37:02,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:37:02,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124319107] [2024-06-14 13:37:02,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:37:02,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:37:02,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:37:03,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:37:03,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:37:03,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124319107] [2024-06-14 13:37:03,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124319107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:37:03,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:37:03,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:37:03,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125060595] [2024-06-14 13:37:03,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:37:03,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:37:03,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:37:03,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:37:03,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:37:03,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 13:37:03,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 96 transitions, 816 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:03,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:37:03,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 13:37:03,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:37:03,793 INFO L124 PetriNetUnfolderBase]: 225/476 cut-off events. [2024-06-14 13:37:03,793 INFO L125 PetriNetUnfolderBase]: For 5235/5235 co-relation queries the response was YES. [2024-06-14 13:37:03,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2118 conditions, 476 events. 225/476 cut-off events. For 5235/5235 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2326 event pairs, 49 based on Foata normal form. 2/477 useless extension candidates. Maximal degree in co-relation 2065. Up to 391 conditions per place. [2024-06-14 13:37:03,797 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 83 selfloop transitions, 20 changer transitions 0/107 dead transitions. [2024-06-14 13:37:03,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 107 transitions, 1052 flow [2024-06-14 13:37:03,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:37:03,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:37:03,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-14 13:37:03,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-14 13:37:03,798 INFO L175 Difference]: Start difference. First operand has 115 places, 96 transitions, 816 flow. Second operand 8 states and 104 transitions. [2024-06-14 13:37:03,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 107 transitions, 1052 flow [2024-06-14 13:37:03,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 107 transitions, 980 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-14 13:37:03,811 INFO L231 Difference]: Finished difference. Result has 118 places, 97 transitions, 804 flow [2024-06-14 13:37:03,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=744, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=804, PETRI_PLACES=118, PETRI_TRANSITIONS=97} [2024-06-14 13:37:03,812 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 88 predicate places. [2024-06-14 13:37:03,813 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 97 transitions, 804 flow [2024-06-14 13:37:03,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:03,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:37:03,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:37:03,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-14 13:37:03,813 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:37:03,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:37:03,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1873258186, now seen corresponding path program 3 times [2024-06-14 13:37:03,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:37:03,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315260829] [2024-06-14 13:37:03,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:37:03,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:37:03,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:37:04,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:37:04,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:37:04,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315260829] [2024-06-14 13:37:04,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315260829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:37:04,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:37:04,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:37:04,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103346833] [2024-06-14 13:37:04,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:37:04,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:37:04,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:37:04,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:37:04,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:37:04,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 13:37:04,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 97 transitions, 804 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:04,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:37:04,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 13:37:04,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:37:04,838 INFO L124 PetriNetUnfolderBase]: 228/481 cut-off events. [2024-06-14 13:37:04,840 INFO L125 PetriNetUnfolderBase]: For 4516/4516 co-relation queries the response was YES. [2024-06-14 13:37:04,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2110 conditions, 481 events. 228/481 cut-off events. For 4516/4516 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2374 event pairs, 50 based on Foata normal form. 1/478 useless extension candidates. Maximal degree in co-relation 2055. Up to 367 conditions per place. [2024-06-14 13:37:04,843 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 75 selfloop transitions, 28 changer transitions 0/107 dead transitions. [2024-06-14 13:37:04,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 107 transitions, 1058 flow [2024-06-14 13:37:04,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:37:04,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:37:04,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-14 13:37:04,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-14 13:37:04,864 INFO L175 Difference]: Start difference. First operand has 118 places, 97 transitions, 804 flow. Second operand 10 states and 127 transitions. [2024-06-14 13:37:04,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 107 transitions, 1058 flow [2024-06-14 13:37:04,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 107 transitions, 995 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-14 13:37:04,874 INFO L231 Difference]: Finished difference. Result has 123 places, 99 transitions, 836 flow [2024-06-14 13:37:04,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=836, PETRI_PLACES=123, PETRI_TRANSITIONS=99} [2024-06-14 13:37:04,875 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 93 predicate places. [2024-06-14 13:37:04,875 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 99 transitions, 836 flow [2024-06-14 13:37:04,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:04,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:37:04,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:37:04,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-14 13:37:04,876 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:37:04,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:37:04,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1846077228, now seen corresponding path program 4 times [2024-06-14 13:37:04,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:37:04,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251678829] [2024-06-14 13:37:04,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:37:04,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:37:04,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:37:05,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:37:05,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:37:05,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251678829] [2024-06-14 13:37:05,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251678829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:37:05,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:37:05,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:37:05,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613225577] [2024-06-14 13:37:05,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:37:05,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:37:05,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:37:05,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:37:05,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:37:05,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 13:37:05,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 99 transitions, 836 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:05,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:37:05,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 13:37:05,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:37:05,931 INFO L124 PetriNetUnfolderBase]: 226/478 cut-off events. [2024-06-14 13:37:05,932 INFO L125 PetriNetUnfolderBase]: For 4129/4129 co-relation queries the response was YES. [2024-06-14 13:37:05,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2052 conditions, 478 events. 226/478 cut-off events. For 4129/4129 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2349 event pairs, 50 based on Foata normal form. 1/475 useless extension candidates. Maximal degree in co-relation 1997. Up to 344 conditions per place. [2024-06-14 13:37:05,942 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 70 selfloop transitions, 36 changer transitions 0/110 dead transitions. [2024-06-14 13:37:05,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 110 transitions, 1102 flow [2024-06-14 13:37:05,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:37:05,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:37:05,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-14 13:37:05,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-14 13:37:05,943 INFO L175 Difference]: Start difference. First operand has 123 places, 99 transitions, 836 flow. Second operand 10 states and 130 transitions. [2024-06-14 13:37:05,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 110 transitions, 1102 flow [2024-06-14 13:37:05,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 110 transitions, 991 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-14 13:37:05,953 INFO L231 Difference]: Finished difference. Result has 123 places, 101 transitions, 843 flow [2024-06-14 13:37:05,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=725, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=843, PETRI_PLACES=123, PETRI_TRANSITIONS=101} [2024-06-14 13:37:05,953 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 93 predicate places. [2024-06-14 13:37:05,954 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 101 transitions, 843 flow [2024-06-14 13:37:05,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:05,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:37:05,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:37:05,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-14 13:37:05,954 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:37:05,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:37:05,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1901114731, now seen corresponding path program 1 times [2024-06-14 13:37:05,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:37:05,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398688710] [2024-06-14 13:37:05,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:37:05,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:37:05,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:37:06,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:37:06,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:37:06,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398688710] [2024-06-14 13:37:06,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398688710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:37:06,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:37:06,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:37:06,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844924228] [2024-06-14 13:37:06,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:37:06,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:37:06,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:37:06,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:37:06,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:37:06,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 13:37:06,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 101 transitions, 843 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:06,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:37:06,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 13:37:06,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:37:06,744 INFO L124 PetriNetUnfolderBase]: 230/484 cut-off events. [2024-06-14 13:37:06,744 INFO L125 PetriNetUnfolderBase]: For 4650/4650 co-relation queries the response was YES. [2024-06-14 13:37:06,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2067 conditions, 484 events. 230/484 cut-off events. For 4650/4650 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2396 event pairs, 44 based on Foata normal form. 2/478 useless extension candidates. Maximal degree in co-relation 2013. Up to 336 conditions per place. [2024-06-14 13:37:06,747 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 67 selfloop transitions, 38 changer transitions 0/109 dead transitions. [2024-06-14 13:37:06,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 109 transitions, 1075 flow [2024-06-14 13:37:06,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:37:06,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:37:06,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 97 transitions. [2024-06-14 13:37:06,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470046082949309 [2024-06-14 13:37:06,748 INFO L175 Difference]: Start difference. First operand has 123 places, 101 transitions, 843 flow. Second operand 7 states and 97 transitions. [2024-06-14 13:37:06,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 109 transitions, 1075 flow [2024-06-14 13:37:06,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 109 transitions, 977 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-14 13:37:06,759 INFO L231 Difference]: Finished difference. Result has 122 places, 102 transitions, 835 flow [2024-06-14 13:37:06,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=745, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=835, PETRI_PLACES=122, PETRI_TRANSITIONS=102} [2024-06-14 13:37:06,759 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 92 predicate places. [2024-06-14 13:37:06,759 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 102 transitions, 835 flow [2024-06-14 13:37:06,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:06,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:37:06,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:37:06,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-14 13:37:06,760 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:37:06,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:37:06,760 INFO L85 PathProgramCache]: Analyzing trace with hash -138279979, now seen corresponding path program 2 times [2024-06-14 13:37:06,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:37:06,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784838347] [2024-06-14 13:37:06,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:37:06,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:37:06,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:37:07,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:37:07,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:37:07,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784838347] [2024-06-14 13:37:07,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784838347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:37:07,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:37:07,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:37:07,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771274598] [2024-06-14 13:37:07,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:37:07,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:37:07,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:37:07,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:37:07,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:37:07,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 13:37:07,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 102 transitions, 835 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:07,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:37:07,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 13:37:07,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:37:07,623 INFO L124 PetriNetUnfolderBase]: 234/492 cut-off events. [2024-06-14 13:37:07,624 INFO L125 PetriNetUnfolderBase]: For 4514/4514 co-relation queries the response was YES. [2024-06-14 13:37:07,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2075 conditions, 492 events. 234/492 cut-off events. For 4514/4514 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2444 event pairs, 42 based on Foata normal form. 2/486 useless extension candidates. Maximal degree in co-relation 2020. Up to 274 conditions per place. [2024-06-14 13:37:07,626 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 73 selfloop transitions, 34 changer transitions 1/112 dead transitions. [2024-06-14 13:37:07,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 112 transitions, 1085 flow [2024-06-14 13:37:07,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:37:07,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:37:07,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2024-06-14 13:37:07,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4423963133640553 [2024-06-14 13:37:07,628 INFO L175 Difference]: Start difference. First operand has 122 places, 102 transitions, 835 flow. Second operand 7 states and 96 transitions. [2024-06-14 13:37:07,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 112 transitions, 1085 flow [2024-06-14 13:37:07,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 112 transitions, 1009 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-14 13:37:07,641 INFO L231 Difference]: Finished difference. Result has 125 places, 103 transitions, 864 flow [2024-06-14 13:37:07,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=759, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=864, PETRI_PLACES=125, PETRI_TRANSITIONS=103} [2024-06-14 13:37:07,642 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 95 predicate places. [2024-06-14 13:37:07,642 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 103 transitions, 864 flow [2024-06-14 13:37:07,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:07,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:37:07,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:37:07,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-14 13:37:07,643 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:37:07,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:37:07,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1812401101, now seen corresponding path program 3 times [2024-06-14 13:37:07,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:37:07,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489554273] [2024-06-14 13:37:07,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:37:07,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:37:07,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:37:08,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:37:08,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:37:08,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489554273] [2024-06-14 13:37:08,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489554273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:37:08,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:37:08,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:37:08,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171714767] [2024-06-14 13:37:08,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:37:08,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:37:08,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:37:08,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:37:08,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:37:08,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 13:37:08,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 103 transitions, 864 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:08,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:37:08,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 13:37:08,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:37:08,498 INFO L124 PetriNetUnfolderBase]: 226/477 cut-off events. [2024-06-14 13:37:08,499 INFO L125 PetriNetUnfolderBase]: For 4851/4851 co-relation queries the response was YES. [2024-06-14 13:37:08,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2088 conditions, 477 events. 226/477 cut-off events. For 4851/4851 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2389 event pairs, 34 based on Foata normal form. 2/473 useless extension candidates. Maximal degree in co-relation 2031. Up to 353 conditions per place. [2024-06-14 13:37:08,501 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 90 selfloop transitions, 22 changer transitions 0/116 dead transitions. [2024-06-14 13:37:08,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 116 transitions, 1130 flow [2024-06-14 13:37:08,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:37:08,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:37:08,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-14 13:37:08,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4157706093189964 [2024-06-14 13:37:08,503 INFO L175 Difference]: Start difference. First operand has 125 places, 103 transitions, 864 flow. Second operand 9 states and 116 transitions. [2024-06-14 13:37:08,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 116 transitions, 1130 flow [2024-06-14 13:37:08,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 116 transitions, 1073 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-14 13:37:08,513 INFO L231 Difference]: Finished difference. Result has 130 places, 104 transitions, 870 flow [2024-06-14 13:37:08,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=870, PETRI_PLACES=130, PETRI_TRANSITIONS=104} [2024-06-14 13:37:08,514 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 100 predicate places. [2024-06-14 13:37:08,514 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 104 transitions, 870 flow [2024-06-14 13:37:08,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:08,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:37:08,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:37:08,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-14 13:37:08,515 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:37:08,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:37:08,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1901120683, now seen corresponding path program 1 times [2024-06-14 13:37:08,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:37:08,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384761161] [2024-06-14 13:37:08,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:37:08,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:37:08,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:37:09,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:37:09,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:37:09,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384761161] [2024-06-14 13:37:09,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384761161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:37:09,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:37:09,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:37:09,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657541103] [2024-06-14 13:37:09,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:37:09,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:37:09,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:37:09,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:37:09,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:37:09,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 13:37:09,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 104 transitions, 870 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:09,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:37:09,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 13:37:09,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:37:09,505 INFO L124 PetriNetUnfolderBase]: 238/508 cut-off events. [2024-06-14 13:37:09,505 INFO L125 PetriNetUnfolderBase]: For 7285/7285 co-relation queries the response was YES. [2024-06-14 13:37:09,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2213 conditions, 508 events. 238/508 cut-off events. For 7285/7285 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2589 event pairs, 45 based on Foata normal form. 8/508 useless extension candidates. Maximal degree in co-relation 2155. Up to 335 conditions per place. [2024-06-14 13:37:09,507 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 70 selfloop transitions, 35 changer transitions 6/115 dead transitions. [2024-06-14 13:37:09,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 115 transitions, 1146 flow [2024-06-14 13:37:09,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:37:09,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:37:09,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 113 transitions. [2024-06-14 13:37:09,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45564516129032256 [2024-06-14 13:37:09,509 INFO L175 Difference]: Start difference. First operand has 130 places, 104 transitions, 870 flow. Second operand 8 states and 113 transitions. [2024-06-14 13:37:09,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 115 transitions, 1146 flow [2024-06-14 13:37:09,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 115 transitions, 1095 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-14 13:37:09,521 INFO L231 Difference]: Finished difference. Result has 131 places, 101 transitions, 874 flow [2024-06-14 13:37:09,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=819, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=874, PETRI_PLACES=131, PETRI_TRANSITIONS=101} [2024-06-14 13:37:09,521 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2024-06-14 13:37:09,521 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 101 transitions, 874 flow [2024-06-14 13:37:09,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:09,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:37:09,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:37:09,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-14 13:37:09,522 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:37:09,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:37:09,522 INFO L85 PathProgramCache]: Analyzing trace with hash -2075430741, now seen corresponding path program 2 times [2024-06-14 13:37:09,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:37:09,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085976560] [2024-06-14 13:37:09,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:37:09,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:37:09,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:37:10,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:37:10,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:37:10,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085976560] [2024-06-14 13:37:10,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085976560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:37:10,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:37:10,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:37:10,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076784866] [2024-06-14 13:37:10,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:37:10,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:37:10,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:37:10,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:37:10,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:37:10,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 13:37:10,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 101 transitions, 874 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:10,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:37:10,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 13:37:10,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:37:10,402 INFO L124 PetriNetUnfolderBase]: 251/541 cut-off events. [2024-06-14 13:37:10,402 INFO L125 PetriNetUnfolderBase]: For 9945/9945 co-relation queries the response was YES. [2024-06-14 13:37:10,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2587 conditions, 541 events. 251/541 cut-off events. For 9945/9945 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2794 event pairs, 56 based on Foata normal form. 6/539 useless extension candidates. Maximal degree in co-relation 2528. Up to 293 conditions per place. [2024-06-14 13:37:10,405 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 65 selfloop transitions, 43 changer transitions 5/117 dead transitions. [2024-06-14 13:37:10,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 117 transitions, 1238 flow [2024-06-14 13:37:10,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:37:10,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:37:10,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 126 transitions. [2024-06-14 13:37:10,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-14 13:37:10,406 INFO L175 Difference]: Start difference. First operand has 131 places, 101 transitions, 874 flow. Second operand 9 states and 126 transitions. [2024-06-14 13:37:10,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 117 transitions, 1238 flow [2024-06-14 13:37:10,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 117 transitions, 1139 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-14 13:37:10,419 INFO L231 Difference]: Finished difference. Result has 130 places, 100 transitions, 869 flow [2024-06-14 13:37:10,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=785, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=869, PETRI_PLACES=130, PETRI_TRANSITIONS=100} [2024-06-14 13:37:10,420 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 100 predicate places. [2024-06-14 13:37:10,420 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 100 transitions, 869 flow [2024-06-14 13:37:10,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:10,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:37:10,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:37:10,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-14 13:37:10,420 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:37:10,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:37:10,421 INFO L85 PathProgramCache]: Analyzing trace with hash -2068288341, now seen corresponding path program 3 times [2024-06-14 13:37:10,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:37:10,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146117853] [2024-06-14 13:37:10,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:37:10,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:37:10,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:37:11,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:37:11,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:37:11,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146117853] [2024-06-14 13:37:11,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146117853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:37:11,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:37:11,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:37:11,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34874111] [2024-06-14 13:37:11,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:37:11,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:37:11,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:37:11,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:37:11,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:37:11,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 13:37:11,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 100 transitions, 869 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:11,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:37:11,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 13:37:11,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:37:11,554 INFO L124 PetriNetUnfolderBase]: 255/551 cut-off events. [2024-06-14 13:37:11,554 INFO L125 PetriNetUnfolderBase]: For 10160/10160 co-relation queries the response was YES. [2024-06-14 13:37:11,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2580 conditions, 551 events. 255/551 cut-off events. For 10160/10160 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2876 event pairs, 68 based on Foata normal form. 8/555 useless extension candidates. Maximal degree in co-relation 2522. Up to 389 conditions per place. [2024-06-14 13:37:11,557 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 72 selfloop transitions, 31 changer transitions 7/114 dead transitions. [2024-06-14 13:37:11,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 114 transitions, 1149 flow [2024-06-14 13:37:11,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:37:11,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:37:11,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-14 13:37:11,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.432258064516129 [2024-06-14 13:37:11,559 INFO L175 Difference]: Start difference. First operand has 130 places, 100 transitions, 869 flow. Second operand 10 states and 134 transitions. [2024-06-14 13:37:11,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 114 transitions, 1149 flow [2024-06-14 13:37:11,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 114 transitions, 1061 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-14 13:37:11,573 INFO L231 Difference]: Finished difference. Result has 131 places, 98 transitions, 839 flow [2024-06-14 13:37:11,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=781, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=839, PETRI_PLACES=131, PETRI_TRANSITIONS=98} [2024-06-14 13:37:11,574 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2024-06-14 13:37:11,574 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 98 transitions, 839 flow [2024-06-14 13:37:11,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:11,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:37:11,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:37:11,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-14 13:37:11,575 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:37:11,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:37:11,575 INFO L85 PathProgramCache]: Analyzing trace with hash 2020025515, now seen corresponding path program 4 times [2024-06-14 13:37:11,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:37:11,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585054204] [2024-06-14 13:37:11,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:37:11,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:37:11,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:37:12,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:37:12,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:37:12,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585054204] [2024-06-14 13:37:12,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585054204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:37:12,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:37:12,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:37:12,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554370820] [2024-06-14 13:37:12,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:37:12,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:37:12,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:37:12,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:37:12,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:37:12,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 13:37:12,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 98 transitions, 839 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:12,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:37:12,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 13:37:12,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:37:12,751 INFO L124 PetriNetUnfolderBase]: 231/497 cut-off events. [2024-06-14 13:37:12,752 INFO L125 PetriNetUnfolderBase]: For 7394/7394 co-relation queries the response was YES. [2024-06-14 13:37:12,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2167 conditions, 497 events. 231/497 cut-off events. For 7394/7394 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2549 event pairs, 54 based on Foata normal form. 8/501 useless extension candidates. Maximal degree in co-relation 2109. Up to 358 conditions per place. [2024-06-14 13:37:12,754 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 76 selfloop transitions, 23 changer transitions 9/112 dead transitions. [2024-06-14 13:37:12,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 112 transitions, 1121 flow [2024-06-14 13:37:12,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:37:12,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:37:12,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-14 13:37:12,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2024-06-14 13:37:12,756 INFO L175 Difference]: Start difference. First operand has 131 places, 98 transitions, 839 flow. Second operand 9 states and 118 transitions. [2024-06-14 13:37:12,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 112 transitions, 1121 flow [2024-06-14 13:37:12,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 112 transitions, 1045 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-14 13:37:12,767 INFO L231 Difference]: Finished difference. Result has 131 places, 97 transitions, 814 flow [2024-06-14 13:37:12,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=814, PETRI_PLACES=131, PETRI_TRANSITIONS=97} [2024-06-14 13:37:12,767 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2024-06-14 13:37:12,767 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 97 transitions, 814 flow [2024-06-14 13:37:12,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:12,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:37:12,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:37:12,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-14 13:37:12,768 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:37:12,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:37:12,768 INFO L85 PathProgramCache]: Analyzing trace with hash -2075639991, now seen corresponding path program 5 times [2024-06-14 13:37:12,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:37:12,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523161903] [2024-06-14 13:37:12,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:37:12,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:37:12,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:37:13,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:37:13,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:37:13,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523161903] [2024-06-14 13:37:13,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523161903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:37:13,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:37:13,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:37:13,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886775783] [2024-06-14 13:37:13,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:37:13,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:37:13,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:37:13,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:37:13,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:37:13,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 13:37:13,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 97 transitions, 814 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:13,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:37:13,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 13:37:13,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:37:13,798 INFO L124 PetriNetUnfolderBase]: 226/492 cut-off events. [2024-06-14 13:37:13,798 INFO L125 PetriNetUnfolderBase]: For 7004/7004 co-relation queries the response was YES. [2024-06-14 13:37:13,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2096 conditions, 492 events. 226/492 cut-off events. For 7004/7004 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2523 event pairs, 56 based on Foata normal form. 8/496 useless extension candidates. Maximal degree in co-relation 2037. Up to 351 conditions per place. [2024-06-14 13:37:13,801 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 72 selfloop transitions, 24 changer transitions 9/109 dead transitions. [2024-06-14 13:37:13,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 109 transitions, 1072 flow [2024-06-14 13:37:13,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:37:13,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:37:13,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-14 13:37:13,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-06-14 13:37:13,813 INFO L175 Difference]: Start difference. First operand has 131 places, 97 transitions, 814 flow. Second operand 9 states and 120 transitions. [2024-06-14 13:37:13,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 109 transitions, 1072 flow [2024-06-14 13:37:13,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 109 transitions, 1006 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-14 13:37:13,823 INFO L231 Difference]: Finished difference. Result has 129 places, 94 transitions, 781 flow [2024-06-14 13:37:13,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=781, PETRI_PLACES=129, PETRI_TRANSITIONS=94} [2024-06-14 13:37:13,825 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 99 predicate places. [2024-06-14 13:37:13,825 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 94 transitions, 781 flow [2024-06-14 13:37:13,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:13,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:37:13,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:37:13,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-14 13:37:13,825 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:37:13,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:37:13,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1397751763, now seen corresponding path program 4 times [2024-06-14 13:37:13,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:37:13,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960558798] [2024-06-14 13:37:13,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:37:13,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:37:13,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:37:14,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:37:14,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:37:14,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960558798] [2024-06-14 13:37:14,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960558798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:37:14,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:37:14,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:37:14,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436196510] [2024-06-14 13:37:14,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:37:14,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:37:14,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:37:14,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:37:14,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:37:14,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 13:37:14,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 94 transitions, 781 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:14,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:37:14,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 13:37:14,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:37:14,565 INFO L124 PetriNetUnfolderBase]: 214/472 cut-off events. [2024-06-14 13:37:14,565 INFO L125 PetriNetUnfolderBase]: For 6079/6079 co-relation queries the response was YES. [2024-06-14 13:37:14,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1930 conditions, 472 events. 214/472 cut-off events. For 6079/6079 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2363 event pairs, 31 based on Foata normal form. 8/472 useless extension candidates. Maximal degree in co-relation 1873. Up to 268 conditions per place. [2024-06-14 13:37:14,567 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 68 selfloop transitions, 8 changer transitions 25/105 dead transitions. [2024-06-14 13:37:14,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 105 transitions, 1015 flow [2024-06-14 13:37:14,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:37:14,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:37:14,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 93 transitions. [2024-06-14 13:37:14,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-14 13:37:14,569 INFO L175 Difference]: Start difference. First operand has 129 places, 94 transitions, 781 flow. Second operand 7 states and 93 transitions. [2024-06-14 13:37:14,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 105 transitions, 1015 flow [2024-06-14 13:37:14,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 105 transitions, 959 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-14 13:37:14,579 INFO L231 Difference]: Finished difference. Result has 125 places, 79 transitions, 642 flow [2024-06-14 13:37:14,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=725, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=642, PETRI_PLACES=125, PETRI_TRANSITIONS=79} [2024-06-14 13:37:14,579 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 95 predicate places. [2024-06-14 13:37:14,579 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 79 transitions, 642 flow [2024-06-14 13:37:14,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:14,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:37:14,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:37:14,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-14 13:37:14,580 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:37:14,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:37:14,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1980959843, now seen corresponding path program 6 times [2024-06-14 13:37:14,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:37:14,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263401329] [2024-06-14 13:37:14,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:37:14,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:37:14,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:37:15,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:37:15,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:37:15,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263401329] [2024-06-14 13:37:15,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263401329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:37:15,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:37:15,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:37:15,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004966261] [2024-06-14 13:37:15,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:37:15,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:37:15,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:37:15,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:37:15,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:37:15,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 13:37:15,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 79 transitions, 642 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:15,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:37:15,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 13:37:15,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:37:15,655 INFO L124 PetriNetUnfolderBase]: 183/421 cut-off events. [2024-06-14 13:37:15,655 INFO L125 PetriNetUnfolderBase]: For 7778/7778 co-relation queries the response was YES. [2024-06-14 13:37:15,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1932 conditions, 421 events. 183/421 cut-off events. For 7778/7778 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2041 event pairs, 38 based on Foata normal form. 6/423 useless extension candidates. Maximal degree in co-relation 1876. Up to 213 conditions per place. [2024-06-14 13:37:15,657 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 64 selfloop transitions, 22 changer transitions 6/96 dead transitions. [2024-06-14 13:37:15,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 96 transitions, 952 flow [2024-06-14 13:37:15,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:37:15,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:37:15,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 125 transitions. [2024-06-14 13:37:15,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44802867383512546 [2024-06-14 13:37:15,658 INFO L175 Difference]: Start difference. First operand has 125 places, 79 transitions, 642 flow. Second operand 9 states and 125 transitions. [2024-06-14 13:37:15,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 96 transitions, 952 flow [2024-06-14 13:37:15,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 96 transitions, 887 flow, removed 14 selfloop flow, removed 12 redundant places. [2024-06-14 13:37:15,668 INFO L231 Difference]: Finished difference. Result has 110 places, 78 transitions, 635 flow [2024-06-14 13:37:15,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=635, PETRI_PLACES=110, PETRI_TRANSITIONS=78} [2024-06-14 13:37:15,668 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 80 predicate places. [2024-06-14 13:37:15,668 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 78 transitions, 635 flow [2024-06-14 13:37:15,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:15,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:37:15,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:37:15,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-14 13:37:15,669 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:37:15,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:37:15,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1973817443, now seen corresponding path program 7 times [2024-06-14 13:37:15,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:37:15,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891629256] [2024-06-14 13:37:15,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:37:15,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:37:15,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:37:16,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:37:16,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:37:16,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891629256] [2024-06-14 13:37:16,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891629256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:37:16,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:37:16,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:37:16,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192956512] [2024-06-14 13:37:16,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:37:16,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:37:16,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:37:16,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:37:16,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:37:16,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 13:37:16,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 78 transitions, 635 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:16,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:37:16,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 13:37:16,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:37:16,928 INFO L124 PetriNetUnfolderBase]: 159/369 cut-off events. [2024-06-14 13:37:16,928 INFO L125 PetriNetUnfolderBase]: For 3922/3922 co-relation queries the response was YES. [2024-06-14 13:37:16,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1521 conditions, 369 events. 159/369 cut-off events. For 3922/3922 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1733 event pairs, 30 based on Foata normal form. 8/373 useless extension candidates. Maximal degree in co-relation 1472. Up to 213 conditions per place. [2024-06-14 13:37:16,930 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 56 selfloop transitions, 21 changer transitions 10/91 dead transitions. [2024-06-14 13:37:16,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 91 transitions, 859 flow [2024-06-14 13:37:16,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:37:16,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:37:16,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-14 13:37:16,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-06-14 13:37:16,931 INFO L175 Difference]: Start difference. First operand has 110 places, 78 transitions, 635 flow. Second operand 11 states and 140 transitions. [2024-06-14 13:37:16,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 91 transitions, 859 flow [2024-06-14 13:37:16,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 91 transitions, 811 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-14 13:37:16,938 INFO L231 Difference]: Finished difference. Result has 112 places, 73 transitions, 593 flow [2024-06-14 13:37:16,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=587, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=593, PETRI_PLACES=112, PETRI_TRANSITIONS=73} [2024-06-14 13:37:16,940 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 82 predicate places. [2024-06-14 13:37:16,940 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 73 transitions, 593 flow [2024-06-14 13:37:16,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:16,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:37:16,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:37:16,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-14 13:37:16,940 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:37:16,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:37:16,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1808919431, now seen corresponding path program 8 times [2024-06-14 13:37:16,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:37:16,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644567332] [2024-06-14 13:37:16,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:37:16,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:37:16,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:37:17,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:37:17,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:37:17,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644567332] [2024-06-14 13:37:17,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644567332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:37:17,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:37:17,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:37:17,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955029817] [2024-06-14 13:37:17,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:37:17,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:37:17,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:37:17,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:37:17,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:37:17,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 13:37:17,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 73 transitions, 593 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:17,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:37:17,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 13:37:17,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:37:17,826 INFO L124 PetriNetUnfolderBase]: 167/379 cut-off events. [2024-06-14 13:37:17,826 INFO L125 PetriNetUnfolderBase]: For 4916/4916 co-relation queries the response was YES. [2024-06-14 13:37:17,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1710 conditions, 379 events. 167/379 cut-off events. For 4916/4916 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1736 event pairs, 40 based on Foata normal form. 6/379 useless extension candidates. Maximal degree in co-relation 1662. Up to 161 conditions per place. [2024-06-14 13:37:17,828 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 55 selfloop transitions, 22 changer transitions 6/87 dead transitions. [2024-06-14 13:37:17,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 87 transitions, 863 flow [2024-06-14 13:37:17,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:37:17,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:37:17,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-14 13:37:17,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2024-06-14 13:37:17,829 INFO L175 Difference]: Start difference. First operand has 112 places, 73 transitions, 593 flow. Second operand 9 states and 118 transitions. [2024-06-14 13:37:17,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 87 transitions, 863 flow [2024-06-14 13:37:17,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 87 transitions, 748 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-14 13:37:17,836 INFO L231 Difference]: Finished difference. Result has 104 places, 71 transitions, 516 flow [2024-06-14 13:37:17,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=516, PETRI_PLACES=104, PETRI_TRANSITIONS=71} [2024-06-14 13:37:17,837 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 74 predicate places. [2024-06-14 13:37:17,837 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 71 transitions, 516 flow [2024-06-14 13:37:17,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:17,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:37:17,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:37:17,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-14 13:37:17,837 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:37:17,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:37:17,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1809186341, now seen corresponding path program 9 times [2024-06-14 13:37:17,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:37:17,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984595097] [2024-06-14 13:37:17,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:37:17,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:37:17,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:37:18,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:37:18,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:37:18,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984595097] [2024-06-14 13:37:18,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984595097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:37:18,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:37:18,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:37:18,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210063080] [2024-06-14 13:37:18,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:37:18,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:37:18,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:37:18,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:37:18,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:37:18,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 13:37:18,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 71 transitions, 516 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:18,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:37:18,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 13:37:18,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:37:18,730 INFO L124 PetriNetUnfolderBase]: 143/327 cut-off events. [2024-06-14 13:37:18,730 INFO L125 PetriNetUnfolderBase]: For 3715/3715 co-relation queries the response was YES. [2024-06-14 13:37:18,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1307 conditions, 327 events. 143/327 cut-off events. For 3715/3715 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1451 event pairs, 32 based on Foata normal form. 8/329 useless extension candidates. Maximal degree in co-relation 1260. Up to 161 conditions per place. [2024-06-14 13:37:18,732 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 47 selfloop transitions, 19 changer transitions 11/81 dead transitions. [2024-06-14 13:37:18,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 81 transitions, 712 flow [2024-06-14 13:37:18,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:37:18,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:37:18,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-14 13:37:18,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050179211469534 [2024-06-14 13:37:18,733 INFO L175 Difference]: Start difference. First operand has 104 places, 71 transitions, 516 flow. Second operand 9 states and 113 transitions. [2024-06-14 13:37:18,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 81 transitions, 712 flow [2024-06-14 13:37:18,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 81 transitions, 656 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-14 13:37:18,738 INFO L231 Difference]: Finished difference. Result has 103 places, 67 transitions, 482 flow [2024-06-14 13:37:18,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=482, PETRI_PLACES=103, PETRI_TRANSITIONS=67} [2024-06-14 13:37:18,739 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 73 predicate places. [2024-06-14 13:37:18,739 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 67 transitions, 482 flow [2024-06-14 13:37:18,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:18,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:37:18,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:37:18,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-14 13:37:18,740 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:37:18,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:37:18,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1707786727, now seen corresponding path program 10 times [2024-06-14 13:37:18,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:37:18,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483775634] [2024-06-14 13:37:18,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:37:18,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:37:18,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:37:19,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:37:19,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:37:19,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483775634] [2024-06-14 13:37:19,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483775634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:37:19,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:37:19,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:37:19,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006129914] [2024-06-14 13:37:19,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:37:19,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:37:19,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:37:19,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:37:19,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:37:19,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 13:37:19,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 67 transitions, 482 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:19,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:37:19,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 13:37:19,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:37:19,731 INFO L124 PetriNetUnfolderBase]: 126/296 cut-off events. [2024-06-14 13:37:19,731 INFO L125 PetriNetUnfolderBase]: For 2442/2442 co-relation queries the response was YES. [2024-06-14 13:37:19,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1110 conditions, 296 events. 126/296 cut-off events. For 2442/2442 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1236 event pairs, 23 based on Foata normal form. 6/296 useless extension candidates. Maximal degree in co-relation 1064. Up to 124 conditions per place. [2024-06-14 13:37:19,733 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 42 selfloop transitions, 17 changer transitions 14/77 dead transitions. [2024-06-14 13:37:19,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 77 transitions, 648 flow [2024-06-14 13:37:19,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:37:19,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:37:19,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-14 13:37:19,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-14 13:37:19,734 INFO L175 Difference]: Start difference. First operand has 103 places, 67 transitions, 482 flow. Second operand 9 states and 109 transitions. [2024-06-14 13:37:19,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 77 transitions, 648 flow [2024-06-14 13:37:19,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 77 transitions, 596 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-14 13:37:19,740 INFO L231 Difference]: Finished difference. Result has 98 places, 61 transitions, 428 flow [2024-06-14 13:37:19,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=428, PETRI_PLACES=98, PETRI_TRANSITIONS=61} [2024-06-14 13:37:19,741 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 68 predicate places. [2024-06-14 13:37:19,741 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 61 transitions, 428 flow [2024-06-14 13:37:19,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:19,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:37:19,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:37:19,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-14 13:37:19,742 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:37:19,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:37:19,742 INFO L85 PathProgramCache]: Analyzing trace with hash 8289283, now seen corresponding path program 1 times [2024-06-14 13:37:19,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:37:19,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918094078] [2024-06-14 13:37:19,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:37:19,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:37:19,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:37:20,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:37:20,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:37:20,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918094078] [2024-06-14 13:37:20,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918094078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:37:20,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:37:20,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:37:20,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686446702] [2024-06-14 13:37:20,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:37:20,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:37:20,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:37:20,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:37:20,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:37:20,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 13:37:20,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 61 transitions, 428 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:20,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:37:20,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 13:37:20,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:37:20,701 INFO L124 PetriNetUnfolderBase]: 119/271 cut-off events. [2024-06-14 13:37:20,701 INFO L125 PetriNetUnfolderBase]: For 2106/2106 co-relation queries the response was YES. [2024-06-14 13:37:20,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 990 conditions, 271 events. 119/271 cut-off events. For 2106/2106 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1078 event pairs, 14 based on Foata normal form. 6/271 useless extension candidates. Maximal degree in co-relation 946. Up to 115 conditions per place. [2024-06-14 13:37:20,703 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 42 selfloop transitions, 14 changer transitions 13/73 dead transitions. [2024-06-14 13:37:20,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 73 transitions, 596 flow [2024-06-14 13:37:20,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:37:20,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:37:20,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-14 13:37:20,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-14 13:37:20,704 INFO L175 Difference]: Start difference. First operand has 98 places, 61 transitions, 428 flow. Second operand 8 states and 100 transitions. [2024-06-14 13:37:20,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 73 transitions, 596 flow [2024-06-14 13:37:20,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 73 transitions, 556 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-14 13:37:20,707 INFO L231 Difference]: Finished difference. Result has 94 places, 56 transitions, 379 flow [2024-06-14 13:37:20,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=379, PETRI_PLACES=94, PETRI_TRANSITIONS=56} [2024-06-14 13:37:20,708 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 64 predicate places. [2024-06-14 13:37:20,708 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 56 transitions, 379 flow [2024-06-14 13:37:20,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:20,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:37:20,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:37:20,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-14 13:37:20,708 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:37:20,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:37:20,709 INFO L85 PathProgramCache]: Analyzing trace with hash 455804601, now seen corresponding path program 2 times [2024-06-14 13:37:20,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:37:20,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947840931] [2024-06-14 13:37:20,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:37:20,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:37:20,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:37:21,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:37:21,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:37:21,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947840931] [2024-06-14 13:37:21,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947840931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:37:21,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:37:21,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:37:21,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629788361] [2024-06-14 13:37:21,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:37:21,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:37:21,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:37:21,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:37:21,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:37:21,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 13:37:21,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 56 transitions, 379 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:21,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:37:21,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 13:37:21,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:37:21,649 INFO L124 PetriNetUnfolderBase]: 97/233 cut-off events. [2024-06-14 13:37:21,649 INFO L125 PetriNetUnfolderBase]: For 1660/1660 co-relation queries the response was YES. [2024-06-14 13:37:21,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 854 conditions, 233 events. 97/233 cut-off events. For 1660/1660 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 877 event pairs, 23 based on Foata normal form. 6/233 useless extension candidates. Maximal degree in co-relation 824. Up to 72 conditions per place. [2024-06-14 13:37:21,650 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 23 selfloop transitions, 8 changer transitions 30/65 dead transitions. [2024-06-14 13:37:21,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 65 transitions, 521 flow [2024-06-14 13:37:21,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:37:21,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:37:21,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-14 13:37:21,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-14 13:37:21,651 INFO L175 Difference]: Start difference. First operand has 94 places, 56 transitions, 379 flow. Second operand 8 states and 98 transitions. [2024-06-14 13:37:21,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 65 transitions, 521 flow [2024-06-14 13:37:21,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 65 transitions, 487 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-14 13:37:21,654 INFO L231 Difference]: Finished difference. Result has 90 places, 33 transitions, 213 flow [2024-06-14 13:37:21,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=213, PETRI_PLACES=90, PETRI_TRANSITIONS=33} [2024-06-14 13:37:21,654 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 60 predicate places. [2024-06-14 13:37:21,654 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 33 transitions, 213 flow [2024-06-14 13:37:21,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:21,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:37:21,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:37:21,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-14 13:37:21,655 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:37:21,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:37:21,655 INFO L85 PathProgramCache]: Analyzing trace with hash -423114695, now seen corresponding path program 3 times [2024-06-14 13:37:21,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:37:21,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826707107] [2024-06-14 13:37:21,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:37:21,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:37:21,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:37:22,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:37:22,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:37:22,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826707107] [2024-06-14 13:37:22,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826707107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:37:22,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:37:22,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:37:22,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268679897] [2024-06-14 13:37:22,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:37:22,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:37:22,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:37:22,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:37:22,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:37:22,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 13:37:22,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 33 transitions, 213 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:22,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:37:22,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 13:37:22,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:37:22,810 INFO L124 PetriNetUnfolderBase]: 40/112 cut-off events. [2024-06-14 13:37:22,810 INFO L125 PetriNetUnfolderBase]: For 790/790 co-relation queries the response was YES. [2024-06-14 13:37:22,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 112 events. 40/112 cut-off events. For 790/790 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 303 event pairs, 3 based on Foata normal form. 6/115 useless extension candidates. Maximal degree in co-relation 342. Up to 24 conditions per place. [2024-06-14 13:37:22,811 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 0 selfloop transitions, 0 changer transitions 39/39 dead transitions. [2024-06-14 13:37:22,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 39 transitions, 267 flow [2024-06-14 13:37:22,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:37:22,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:37:22,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-14 13:37:22,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-14 13:37:22,812 INFO L175 Difference]: Start difference. First operand has 90 places, 33 transitions, 213 flow. Second operand 9 states and 98 transitions. [2024-06-14 13:37:22,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 39 transitions, 267 flow [2024-06-14 13:37:22,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 39 transitions, 212 flow, removed 1 selfloop flow, removed 17 redundant places. [2024-06-14 13:37:22,813 INFO L231 Difference]: Finished difference. Result has 63 places, 0 transitions, 0 flow [2024-06-14 13:37:22,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=63, PETRI_TRANSITIONS=0} [2024-06-14 13:37:22,813 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2024-06-14 13:37:22,814 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 0 transitions, 0 flow [2024-06-14 13:37:22,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:22,816 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-14 13:37:22,816 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-14 13:37:22,816 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-14 13:37:22,817 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-14 13:37:22,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-14 13:37:22,817 INFO L445 BasicCegarLoop]: Path program histogram: [10, 9, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:37:22,819 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-14 13:37:22,819 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-14 13:37:22,822 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-14 13:37:22,822 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-14 13:37:22,823 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.06 01:37:22 BasicIcfg [2024-06-14 13:37:22,823 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-14 13:37:22,823 INFO L158 Benchmark]: Toolchain (without parser) took 44132.95ms. Allocated memory was 155.2MB in the beginning and 725.6MB in the end (delta: 570.4MB). Free memory was 122.6MB in the beginning and 329.7MB in the end (delta: -207.1MB). Peak memory consumption was 363.5MB. Max. memory is 16.1GB. [2024-06-14 13:37:22,824 INFO L158 Benchmark]: Witness Parser took 0.29ms. Allocated memory is still 104.9MB. Free memory is still 66.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 13:37:22,824 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 155.2MB. Free memory is still 125.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 13:37:22,824 INFO L158 Benchmark]: CACSL2BoogieTranslator took 474.91ms. Allocated memory is still 155.2MB. Free memory was 122.1MB in the beginning and 90.9MB in the end (delta: 31.2MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-06-14 13:37:22,824 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.88ms. Allocated memory is still 155.2MB. Free memory was 90.4MB in the beginning and 88.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 13:37:22,824 INFO L158 Benchmark]: Boogie Preprocessor took 53.21ms. Allocated memory is still 155.2MB. Free memory was 87.7MB in the beginning and 85.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 13:37:22,825 INFO L158 Benchmark]: RCFGBuilder took 555.91ms. Allocated memory is still 155.2MB. Free memory was 85.1MB in the beginning and 115.9MB in the end (delta: -30.8MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2024-06-14 13:37:22,825 INFO L158 Benchmark]: TraceAbstraction took 42994.88ms. Allocated memory was 155.2MB in the beginning and 725.6MB in the end (delta: 570.4MB). Free memory was 115.1MB in the beginning and 329.7MB in the end (delta: -214.6MB). Peak memory consumption was 355.6MB. Max. memory is 16.1GB. [2024-06-14 13:37:22,826 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.29ms. Allocated memory is still 104.9MB. Free memory is still 66.0MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.15ms. Allocated memory is still 155.2MB. Free memory is still 125.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 474.91ms. Allocated memory is still 155.2MB. Free memory was 122.1MB in the beginning and 90.9MB in the end (delta: 31.2MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.88ms. Allocated memory is still 155.2MB. Free memory was 90.4MB in the beginning and 88.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.21ms. Allocated memory is still 155.2MB. Free memory was 87.7MB in the beginning and 85.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 555.91ms. Allocated memory is still 155.2MB. Free memory was 85.1MB in the beginning and 115.9MB in the end (delta: -30.8MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. * TraceAbstraction took 42994.88ms. Allocated memory was 155.2MB in the beginning and 725.6MB in the end (delta: 570.4MB). Free memory was 115.1MB in the beginning and 329.7MB in the end (delta: -214.6MB). Peak memory consumption was 355.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 806]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 807]: 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, 49 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: 42.9s, OverallIterations: 48, TraceHistogramMax: 1, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 12.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2372 SdHoareTripleChecker+Valid, 7.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1968 mSDsluCounter, 1138 SdHoareTripleChecker+Invalid, 6.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 959 mSDsCounter, 375 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11607 IncrementalHoareTripleChecker+Invalid, 11982 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 375 mSolverCounterUnsat, 179 mSDtfsCounter, 11607 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 409 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 409 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 9.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=874occurred in iteration=35, InterpolantAutomatonStates: 383, 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, 0.3s SatisfiabilityAnalysisTime, 29.1s InterpolantComputationTime, 768 NumberOfCodeBlocks, 768 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 720 ConstructedInterpolants, 0 QuantifiedInterpolants, 28068 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 48 InterpolantComputations, 48 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-14 13:37:22,857 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