./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix054_power.oepc_power.opt_pso.oepc_rmo.oepc.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/mix054_power.oepc_power.opt_pso.oepc_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 76401ed0 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/mix054_power.oepc_power.opt_pso.oepc_rmo.oepc.i ./goblint.2024-05-21_14-57-05.files/protection/mix054_power.oepc_power.opt_pso.oepc_rmo.oepc.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-76401ed-m [2024-06-20 16:30:31,150 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-20 16:30:31,192 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-20 16:30:31,196 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-20 16:30:31,196 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-20 16:30:31,221 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-20 16:30:31,221 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-20 16:30:31,222 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-20 16:30:31,222 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-20 16:30:31,225 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-20 16:30:31,226 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-20 16:30:31,226 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-20 16:30:31,227 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-20 16:30:31,228 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-20 16:30:31,228 INFO L153 SettingsManager]: * Use SBE=true [2024-06-20 16:30:31,228 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-20 16:30:31,228 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-20 16:30:31,228 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-20 16:30:31,228 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-20 16:30:31,229 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-20 16:30:31,229 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-20 16:30:31,229 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-20 16:30:31,229 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-20 16:30:31,229 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-20 16:30:31,229 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-20 16:30:31,230 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-20 16:30:31,230 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-20 16:30:31,230 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-20 16:30:31,230 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-20 16:30:31,231 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-20 16:30:31,231 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-20 16:30:31,231 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-20 16:30:31,232 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 16:30:31,232 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-20 16:30:31,232 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-20 16:30:31,232 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-20 16:30:31,232 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-20 16:30:31,232 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-20 16:30:31,232 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-20 16:30:31,232 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-20 16:30:31,232 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-20 16:30:31,233 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-20 16:30:31,233 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-20 16:30:31,233 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-20 16:30:31,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-20 16:30:31,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-20 16:30:31,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-20 16:30:31,463 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-20 16:30:31,464 INFO L274 PluginConnector]: CDTParser initialized [2024-06-20 16:30:31,466 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix054_power.oepc_power.opt_pso.oepc_rmo.oepc.i [2024-06-20 16:30:32,538 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-20 16:30:32,726 INFO L384 CDTParser]: Found 1 translation units. [2024-06-20 16:30:32,727 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix054_power.oepc_power.opt_pso.oepc_rmo.oepc.i [2024-06-20 16:30:32,738 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc73ab04c/932cde2dc7ba4b9487d89008d6096611/FLAGe0bdef8ca [2024-06-20 16:30:32,747 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc73ab04c/932cde2dc7ba4b9487d89008d6096611 [2024-06-20 16:30:32,749 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-20 16:30:32,749 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-20 16:30:32,750 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix054_power.oepc_power.opt_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-20 16:30:32,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-20 16:30:32,830 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-20 16:30:32,831 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-20 16:30:32,831 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-20 16:30:32,834 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-20 16:30:32,835 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 04:30:32" (1/2) ... [2024-06-20 16:30:32,836 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1072047b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:30:32, skipping insertion in model container [2024-06-20 16:30:32,836 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 04:30:32" (1/2) ... [2024-06-20 16:30:32,837 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6596be1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:30:32, skipping insertion in model container [2024-06-20 16:30:32,837 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 04:30:32" (2/2) ... [2024-06-20 16:30:32,837 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1072047b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:30:32, skipping insertion in model container [2024-06-20 16:30:32,837 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 04:30:32" (2/2) ... [2024-06-20 16:30:32,837 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-20 16:30:32,882 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-20 16:30:32,883 INFO L97 edCorrectnessWitness]: Location invariant before [L808-L808] (((((((((((((! multithreaded || y$read_delayed_var == 0) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1))) [2024-06-20 16:30:32,883 INFO L97 edCorrectnessWitness]: Location invariant before [L809-L809] (((((((((((((! multithreaded || y$read_delayed_var == 0) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1))) [2024-06-20 16:30:32,884 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-20 16:30:32,884 INFO L106 edCorrectnessWitness]: ghost_update [L806-L806] multithreaded = 1; [2024-06-20 16:30:32,915 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-20 16:30:33,160 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 16:30:33,171 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-20 16:30:33,270 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 16:30:33,301 INFO L206 MainTranslator]: Completed translation [2024-06-20 16:30:33,302 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:30:33 WrapperNode [2024-06-20 16:30:33,302 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-20 16:30:33,303 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-20 16:30:33,303 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-20 16:30:33,303 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-20 16:30:33,308 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:30:33" (1/1) ... [2024-06-20 16:30:33,318 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:30:33" (1/1) ... [2024-06-20 16:30:33,337 INFO L138 Inliner]: procedures = 174, calls = 34, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 112 [2024-06-20 16:30:33,338 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-20 16:30:33,338 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-20 16:30:33,338 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-20 16:30:33,339 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-20 16:30:33,352 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:30:33" (1/1) ... [2024-06-20 16:30:33,353 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:30:33" (1/1) ... [2024-06-20 16:30:33,355 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:30:33" (1/1) ... [2024-06-20 16:30:33,366 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]. [2024-06-20 16:30:33,366 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:30:33" (1/1) ... [2024-06-20 16:30:33,366 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:30:33" (1/1) ... [2024-06-20 16:30:33,375 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:30:33" (1/1) ... [2024-06-20 16:30:33,384 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:30:33" (1/1) ... [2024-06-20 16:30:33,386 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:30:33" (1/1) ... [2024-06-20 16:30:33,392 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:30:33" (1/1) ... [2024-06-20 16:30:33,394 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-20 16:30:33,396 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-20 16:30:33,396 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-20 16:30:33,396 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-20 16:30:33,397 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:30:33" (1/1) ... [2024-06-20 16:30:33,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 16:30:33,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-20 16:30:33,447 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) [2024-06-20 16:30:33,523 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 [2024-06-20 16:30:33,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-20 16:30:33,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-20 16:30:33,551 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-20 16:30:33,551 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-20 16:30:33,551 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-20 16:30:33,551 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-20 16:30:33,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-20 16:30:33,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-20 16:30:33,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-20 16:30:33,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-20 16:30:33,553 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-20 16:30:33,675 INFO L244 CfgBuilder]: Building ICFG [2024-06-20 16:30:33,676 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-20 16:30:33,877 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-20 16:30:33,878 INFO L293 CfgBuilder]: Performing block encoding [2024-06-20 16:30:33,976 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-20 16:30:33,976 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-20 16:30:33,977 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 04:30:33 BoogieIcfgContainer [2024-06-20 16:30:33,977 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-20 16:30:33,978 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-20 16:30:33,978 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-20 16:30:33,980 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-20 16:30:33,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.06 04:30:32" (1/4) ... [2024-06-20 16:30:33,981 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65fddf54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.06 04:30:33, skipping insertion in model container [2024-06-20 16:30:33,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 04:30:32" (2/4) ... [2024-06-20 16:30:33,981 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65fddf54 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 04:30:33, skipping insertion in model container [2024-06-20 16:30:33,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:30:33" (3/4) ... [2024-06-20 16:30:33,981 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65fddf54 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 04:30:33, skipping insertion in model container [2024-06-20 16:30:33,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 04:30:33" (4/4) ... [2024-06-20 16:30:33,982 INFO L112 eAbstractionObserver]: Analyzing ICFG mix054_power.oepc_power.opt_pso.oepc_rmo.oepc.i [2024-06-20 16:30:33,993 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-20 16:30:33,994 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-20 16:30:33,994 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-20 16:30:34,025 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-20 16:30:34,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 29 transitions, 66 flow [2024-06-20 16:30:34,063 INFO L124 PetriNetUnfolderBase]: 0/27 cut-off events. [2024-06-20 16:30:34,063 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 16:30:34,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 27 events. 0/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-20 16:30:34,065 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 29 transitions, 66 flow [2024-06-20 16:30:34,066 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 21 transitions, 48 flow [2024-06-20 16:30:34,072 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-20 16:30:34,078 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;@776d315e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-20 16:30:34,078 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-20 16:30:34,082 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-20 16:30:34,082 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-20 16:30:34,082 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 16:30:34,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:34,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-20 16:30:34,083 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)] === [2024-06-20 16:30:34,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:34,087 INFO L85 PathProgramCache]: Analyzing trace with hash 322901022, now seen corresponding path program 1 times [2024-06-20 16:30:34,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:34,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890596110] [2024-06-20 16:30:34,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:34,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:34,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:34,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:34,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890596110] [2024-06-20 16:30:34,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890596110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:34,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:34,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-20 16:30:34,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917529113] [2024-06-20 16:30:34,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:34,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-20 16:30:34,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:34,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-20 16:30:34,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-20 16:30:34,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-06-20 16:30:34,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:34,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:34,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-06-20 16:30:34,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:35,098 INFO L124 PetriNetUnfolderBase]: 162/296 cut-off events. [2024-06-20 16:30:35,099 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-20 16:30:35,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 296 events. 162/296 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1017 event pairs, 97 based on Foata normal form. 1/292 useless extension candidates. Maximal degree in co-relation 596. Up to 288 conditions per place. [2024-06-20 16:30:35,103 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 21 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2024-06-20 16:30:35,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 27 transitions, 111 flow [2024-06-20 16:30:35,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-20 16:30:35,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-20 16:30:35,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2024-06-20 16:30:35,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5747126436781609 [2024-06-20 16:30:35,114 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 48 flow. Second operand 3 states and 50 transitions. [2024-06-20 16:30:35,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 27 transitions, 111 flow [2024-06-20 16:30:35,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-20 16:30:35,117 INFO L231 Difference]: Finished difference. Result has 29 places, 23 transitions, 67 flow [2024-06-20 16:30:35,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2024-06-20 16:30:35,121 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2024-06-20 16:30:35,122 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 67 flow [2024-06-20 16:30:35,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:35,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:35,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:35,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-20 16:30:35,122 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)] === [2024-06-20 16:30:35,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:35,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1070392915, now seen corresponding path program 1 times [2024-06-20 16:30:35,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:35,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326686162] [2024-06-20 16:30:35,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:35,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:35,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:35,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:35,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:35,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326686162] [2024-06-20 16:30:35,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326686162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:35,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:35,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-20 16:30:35,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093303258] [2024-06-20 16:30:35,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:35,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-20 16:30:35,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:35,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-20 16:30:35,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-20 16:30:35,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-06-20 16:30:35,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 67 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:35,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:35,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-06-20 16:30:35,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:35,680 INFO L124 PetriNetUnfolderBase]: 159/291 cut-off events. [2024-06-20 16:30:35,680 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-06-20 16:30:35,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 679 conditions, 291 events. 159/291 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 998 event pairs, 79 based on Foata normal form. 2/293 useless extension candidates. Maximal degree in co-relation 667. Up to 274 conditions per place. [2024-06-20 16:30:35,684 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 25 selfloop transitions, 5 changer transitions 0/33 dead transitions. [2024-06-20 16:30:35,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 33 transitions, 153 flow [2024-06-20 16:30:35,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-20 16:30:35,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-20 16:30:35,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2024-06-20 16:30:35,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2024-06-20 16:30:35,687 INFO L175 Difference]: Start difference. First operand has 29 places, 23 transitions, 67 flow. Second operand 4 states and 64 transitions. [2024-06-20 16:30:35,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 33 transitions, 153 flow [2024-06-20 16:30:35,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 33 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-20 16:30:35,691 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 91 flow [2024-06-20 16:30:35,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=91, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2024-06-20 16:30:35,692 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 4 predicate places. [2024-06-20 16:30:35,693 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 91 flow [2024-06-20 16:30:35,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:35,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:35,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:35,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-20 16:30:35,693 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:30:35,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:35,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1177557569, now seen corresponding path program 1 times [2024-06-20 16:30:35,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:35,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75660173] [2024-06-20 16:30:35,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:35,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:35,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:36,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:36,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:36,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75660173] [2024-06-20 16:30:36,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75660173] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:36,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:36,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-20 16:30:36,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690167083] [2024-06-20 16:30:36,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:36,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-20 16:30:36,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:36,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-20 16:30:36,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-20 16:30:36,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-06-20 16:30:36,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 91 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:36,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:36,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-06-20 16:30:36,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:36,229 INFO L124 PetriNetUnfolderBase]: 188/339 cut-off events. [2024-06-20 16:30:36,229 INFO L125 PetriNetUnfolderBase]: For 179/179 co-relation queries the response was YES. [2024-06-20 16:30:36,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 864 conditions, 339 events. 188/339 cut-off events. For 179/179 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1236 event pairs, 62 based on Foata normal form. 5/344 useless extension candidates. Maximal degree in co-relation 850. Up to 260 conditions per place. [2024-06-20 16:30:36,231 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 37 selfloop transitions, 11 changer transitions 0/51 dead transitions. [2024-06-20 16:30:36,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 51 transitions, 261 flow [2024-06-20 16:30:36,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 16:30:36,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 16:30:36,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2024-06-20 16:30:36,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6068965517241379 [2024-06-20 16:30:36,232 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 91 flow. Second operand 5 states and 88 transitions. [2024-06-20 16:30:36,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 51 transitions, 261 flow [2024-06-20 16:30:36,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 51 transitions, 252 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-20 16:30:36,234 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 160 flow [2024-06-20 16:30:36,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=160, PETRI_PLACES=37, PETRI_TRANSITIONS=33} [2024-06-20 16:30:36,234 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 9 predicate places. [2024-06-20 16:30:36,235 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 160 flow [2024-06-20 16:30:36,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:36,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:36,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:36,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-20 16:30:36,235 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)] === [2024-06-20 16:30:36,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:36,235 INFO L85 PathProgramCache]: Analyzing trace with hash 2011893340, now seen corresponding path program 1 times [2024-06-20 16:30:36,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:36,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513034469] [2024-06-20 16:30:36,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:36,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:36,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:36,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:36,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:36,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513034469] [2024-06-20 16:30:36,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513034469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:36,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:36,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-20 16:30:36,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310047580] [2024-06-20 16:30:36,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:36,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-20 16:30:36,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:36,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-20 16:30:36,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-20 16:30:36,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-06-20 16:30:36,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 160 flow. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:36,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:36,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-06-20 16:30:36,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:36,894 INFO L124 PetriNetUnfolderBase]: 189/341 cut-off events. [2024-06-20 16:30:36,894 INFO L125 PetriNetUnfolderBase]: For 407/407 co-relation queries the response was YES. [2024-06-20 16:30:36,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1093 conditions, 341 events. 189/341 cut-off events. For 407/407 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1229 event pairs, 44 based on Foata normal form. 3/344 useless extension candidates. Maximal degree in co-relation 1076. Up to 283 conditions per place. [2024-06-20 16:30:36,896 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 42 selfloop transitions, 14 changer transitions 0/59 dead transitions. [2024-06-20 16:30:36,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 59 transitions, 368 flow [2024-06-20 16:30:36,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:30:36,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:30:36,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-06-20 16:30:36,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5689655172413793 [2024-06-20 16:30:36,898 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 160 flow. Second operand 6 states and 99 transitions. [2024-06-20 16:30:36,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 59 transitions, 368 flow [2024-06-20 16:30:36,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 59 transitions, 364 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-20 16:30:36,900 INFO L231 Difference]: Finished difference. Result has 45 places, 41 transitions, 256 flow [2024-06-20 16:30:36,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=256, PETRI_PLACES=45, PETRI_TRANSITIONS=41} [2024-06-20 16:30:36,901 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 17 predicate places. [2024-06-20 16:30:36,901 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 41 transitions, 256 flow [2024-06-20 16:30:36,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:36,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:36,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:36,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-20 16:30:36,902 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:30:36,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:36,902 INFO L85 PathProgramCache]: Analyzing trace with hash -2056410050, now seen corresponding path program 1 times [2024-06-20 16:30:36,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:36,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775010196] [2024-06-20 16:30:36,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:36,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:36,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:37,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:37,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:37,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775010196] [2024-06-20 16:30:37,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775010196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:37,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:37,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 16:30:37,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665144049] [2024-06-20 16:30:37,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:37,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 16:30:37,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:37,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 16:30:37,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-20 16:30:37,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-06-20 16:30:37,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 41 transitions, 256 flow. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:37,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:37,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-06-20 16:30:37,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:37,814 INFO L124 PetriNetUnfolderBase]: 190/344 cut-off events. [2024-06-20 16:30:37,814 INFO L125 PetriNetUnfolderBase]: For 725/725 co-relation queries the response was YES. [2024-06-20 16:30:37,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1271 conditions, 344 events. 190/344 cut-off events. For 725/725 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1245 event pairs, 25 based on Foata normal form. 6/350 useless extension candidates. Maximal degree in co-relation 1249. Up to 260 conditions per place. [2024-06-20 16:30:37,816 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 42 selfloop transitions, 16 changer transitions 0/61 dead transitions. [2024-06-20 16:30:37,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 61 transitions, 432 flow [2024-06-20 16:30:37,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:30:37,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:30:37,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 109 transitions. [2024-06-20 16:30:37,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5369458128078818 [2024-06-20 16:30:37,818 INFO L175 Difference]: Start difference. First operand has 45 places, 41 transitions, 256 flow. Second operand 7 states and 109 transitions. [2024-06-20 16:30:37,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 61 transitions, 432 flow [2024-06-20 16:30:37,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 61 transitions, 416 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-20 16:30:37,821 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 275 flow [2024-06-20 16:30:37,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=275, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2024-06-20 16:30:37,822 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 22 predicate places. [2024-06-20 16:30:37,822 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 275 flow [2024-06-20 16:30:37,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:37,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:37,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:37,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-20 16:30:37,823 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)] === [2024-06-20 16:30:37,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:37,823 INFO L85 PathProgramCache]: Analyzing trace with hash -2073240141, now seen corresponding path program 1 times [2024-06-20 16:30:37,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:37,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453729429] [2024-06-20 16:30:37,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:37,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:37,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:38,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:38,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:38,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453729429] [2024-06-20 16:30:38,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453729429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:38,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:38,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-20 16:30:38,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168366948] [2024-06-20 16:30:38,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:38,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-20 16:30:38,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:38,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-20 16:30:38,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-20 16:30:38,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:30:38,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 275 flow. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:38,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:38,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:30:38,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:38,330 INFO L124 PetriNetUnfolderBase]: 184/335 cut-off events. [2024-06-20 16:30:38,331 INFO L125 PetriNetUnfolderBase]: For 825/825 co-relation queries the response was YES. [2024-06-20 16:30:38,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1326 conditions, 335 events. 184/335 cut-off events. For 825/825 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1194 event pairs, 38 based on Foata normal form. 3/338 useless extension candidates. Maximal degree in co-relation 1301. Up to 318 conditions per place. [2024-06-20 16:30:38,333 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 40 selfloop transitions, 7 changer transitions 0/49 dead transitions. [2024-06-20 16:30:38,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 49 transitions, 393 flow [2024-06-20 16:30:38,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 16:30:38,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 16:30:38,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2024-06-20 16:30:38,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41379310344827586 [2024-06-20 16:30:38,334 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 275 flow. Second operand 5 states and 60 transitions. [2024-06-20 16:30:38,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 49 transitions, 393 flow [2024-06-20 16:30:38,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 49 transitions, 352 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-20 16:30:38,336 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 268 flow [2024-06-20 16:30:38,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=268, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2024-06-20 16:30:38,337 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 22 predicate places. [2024-06-20 16:30:38,337 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 268 flow [2024-06-20 16:30:38,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:38,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:38,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:38,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-20 16:30:38,338 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)] === [2024-06-20 16:30:38,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:38,338 INFO L85 PathProgramCache]: Analyzing trace with hash 454051128, now seen corresponding path program 1 times [2024-06-20 16:30:38,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:38,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960156015] [2024-06-20 16:30:38,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:38,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:38,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:38,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:38,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:38,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960156015] [2024-06-20 16:30:38,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960156015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:38,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:38,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 16:30:38,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315139360] [2024-06-20 16:30:38,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:38,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 16:30:38,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:38,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 16:30:38,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-20 16:30:38,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:30:38,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 268 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:38,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:38,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:30:38,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:38,895 INFO L124 PetriNetUnfolderBase]: 187/341 cut-off events. [2024-06-20 16:30:38,895 INFO L125 PetriNetUnfolderBase]: For 982/982 co-relation queries the response was YES. [2024-06-20 16:30:38,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1335 conditions, 341 events. 187/341 cut-off events. For 982/982 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1232 event pairs, 41 based on Foata normal form. 6/347 useless extension candidates. Maximal degree in co-relation 1308. Up to 256 conditions per place. [2024-06-20 16:30:38,897 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 41 selfloop transitions, 16 changer transitions 0/59 dead transitions. [2024-06-20 16:30:38,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 59 transitions, 454 flow [2024-06-20 16:30:38,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:30:38,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:30:38,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 79 transitions. [2024-06-20 16:30:38,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540229885057471 [2024-06-20 16:30:38,899 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 268 flow. Second operand 6 states and 79 transitions. [2024-06-20 16:30:38,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 59 transitions, 454 flow [2024-06-20 16:30:38,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 59 transitions, 440 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-20 16:30:38,901 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 326 flow [2024-06-20 16:30:38,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=326, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2024-06-20 16:30:38,902 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 25 predicate places. [2024-06-20 16:30:38,902 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 326 flow [2024-06-20 16:30:38,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:38,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:38,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:38,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-20 16:30:38,903 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)] === [2024-06-20 16:30:38,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:38,903 INFO L85 PathProgramCache]: Analyzing trace with hash 481070418, now seen corresponding path program 2 times [2024-06-20 16:30:38,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:38,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360961145] [2024-06-20 16:30:38,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:38,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:38,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:39,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:39,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:39,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360961145] [2024-06-20 16:30:39,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360961145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:39,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:39,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 16:30:39,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528050965] [2024-06-20 16:30:39,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:39,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 16:30:39,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:39,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 16:30:39,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-20 16:30:39,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:30:39,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 326 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:39,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:39,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:30:39,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:39,457 INFO L124 PetriNetUnfolderBase]: 176/321 cut-off events. [2024-06-20 16:30:39,457 INFO L125 PetriNetUnfolderBase]: For 1072/1072 co-relation queries the response was YES. [2024-06-20 16:30:39,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1312 conditions, 321 events. 176/321 cut-off events. For 1072/1072 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1114 event pairs, 40 based on Foata normal form. 3/324 useless extension candidates. Maximal degree in co-relation 1284. Up to 301 conditions per place. [2024-06-20 16:30:39,459 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 43 selfloop transitions, 9 changer transitions 0/54 dead transitions. [2024-06-20 16:30:39,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 54 transitions, 451 flow [2024-06-20 16:30:39,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:30:39,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:30:39,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2024-06-20 16:30:39,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39655172413793105 [2024-06-20 16:30:39,460 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 326 flow. Second operand 6 states and 69 transitions. [2024-06-20 16:30:39,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 54 transitions, 451 flow [2024-06-20 16:30:39,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 54 transitions, 432 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-20 16:30:39,463 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 331 flow [2024-06-20 16:30:39,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=331, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2024-06-20 16:30:39,464 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 28 predicate places. [2024-06-20 16:30:39,464 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 331 flow [2024-06-20 16:30:39,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:39,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:39,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:39,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-20 16:30:39,465 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)] === [2024-06-20 16:30:39,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:39,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1197350210, now seen corresponding path program 1 times [2024-06-20 16:30:39,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:39,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857302136] [2024-06-20 16:30:39,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:39,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:39,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:40,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:40,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:40,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857302136] [2024-06-20 16:30:40,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857302136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:40,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:40,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:30:40,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183500905] [2024-06-20 16:30:40,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:40,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:30:40,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:40,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:30:40,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:30:40,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:30:40,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 331 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:40,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:40,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:30:40,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:40,299 INFO L124 PetriNetUnfolderBase]: 172/315 cut-off events. [2024-06-20 16:30:40,299 INFO L125 PetriNetUnfolderBase]: For 1188/1188 co-relation queries the response was YES. [2024-06-20 16:30:40,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1298 conditions, 315 events. 172/315 cut-off events. For 1188/1188 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1092 event pairs, 32 based on Foata normal form. 2/317 useless extension candidates. Maximal degree in co-relation 1269. Up to 290 conditions per place. [2024-06-20 16:30:40,301 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 45 selfloop transitions, 10 changer transitions 0/57 dead transitions. [2024-06-20 16:30:40,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 57 transitions, 473 flow [2024-06-20 16:30:40,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:30:40,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:30:40,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-20 16:30:40,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3842364532019704 [2024-06-20 16:30:40,303 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 331 flow. Second operand 7 states and 78 transitions. [2024-06-20 16:30:40,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 57 transitions, 473 flow [2024-06-20 16:30:40,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 57 transitions, 428 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-20 16:30:40,306 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 327 flow [2024-06-20 16:30:40,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=327, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2024-06-20 16:30:40,307 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 29 predicate places. [2024-06-20 16:30:40,307 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 327 flow [2024-06-20 16:30:40,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:40,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:40,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:40,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-20 16:30:40,307 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)] === [2024-06-20 16:30:40,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:40,308 INFO L85 PathProgramCache]: Analyzing trace with hash 2059801544, now seen corresponding path program 1 times [2024-06-20 16:30:40,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:40,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206799119] [2024-06-20 16:30:40,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:40,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:40,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:41,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:41,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:41,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206799119] [2024-06-20 16:30:41,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206799119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:41,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:41,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:30:41,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909481807] [2024-06-20 16:30:41,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:41,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:30:41,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:41,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:30:41,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:30:41,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:30:41,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 327 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:41,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:41,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:30:41,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:41,615 INFO L124 PetriNetUnfolderBase]: 169/310 cut-off events. [2024-06-20 16:30:41,616 INFO L125 PetriNetUnfolderBase]: For 1179/1179 co-relation queries the response was YES. [2024-06-20 16:30:41,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1285 conditions, 310 events. 169/310 cut-off events. For 1179/1179 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1061 event pairs, 31 based on Foata normal form. 2/312 useless extension candidates. Maximal degree in co-relation 1256. Up to 287 conditions per place. [2024-06-20 16:30:41,618 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 46 selfloop transitions, 9 changer transitions 0/57 dead transitions. [2024-06-20 16:30:41,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 57 transitions, 457 flow [2024-06-20 16:30:41,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:30:41,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:30:41,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 76 transitions. [2024-06-20 16:30:41,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37438423645320196 [2024-06-20 16:30:41,619 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 327 flow. Second operand 7 states and 76 transitions. [2024-06-20 16:30:41,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 57 transitions, 457 flow [2024-06-20 16:30:41,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 57 transitions, 427 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-20 16:30:41,622 INFO L231 Difference]: Finished difference. Result has 59 places, 48 transitions, 319 flow [2024-06-20 16:30:41,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=319, PETRI_PLACES=59, PETRI_TRANSITIONS=48} [2024-06-20 16:30:41,623 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 31 predicate places. [2024-06-20 16:30:41,623 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 48 transitions, 319 flow [2024-06-20 16:30:41,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:41,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:41,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:41,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-20 16:30:41,624 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)] === [2024-06-20 16:30:41,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:41,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1821458127, now seen corresponding path program 1 times [2024-06-20 16:30:41,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:41,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694512725] [2024-06-20 16:30:41,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:41,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:41,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:42,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:42,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:42,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694512725] [2024-06-20 16:30:42,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694512725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:42,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:42,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:30:42,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130212009] [2024-06-20 16:30:42,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:42,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:30:42,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:42,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:30:42,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:30:42,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:30:42,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 48 transitions, 319 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:42,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:42,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:30:42,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:42,288 INFO L124 PetriNetUnfolderBase]: 172/315 cut-off events. [2024-06-20 16:30:42,289 INFO L125 PetriNetUnfolderBase]: For 1356/1356 co-relation queries the response was YES. [2024-06-20 16:30:42,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1313 conditions, 315 events. 172/315 cut-off events. For 1356/1356 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1094 event pairs, 36 based on Foata normal form. 1/316 useless extension candidates. Maximal degree in co-relation 1283. Up to 253 conditions per place. [2024-06-20 16:30:42,290 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 48 selfloop transitions, 16 changer transitions 0/66 dead transitions. [2024-06-20 16:30:42,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 66 transitions, 525 flow [2024-06-20 16:30:42,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:30:42,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:30:42,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-06-20 16:30:42,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-20 16:30:42,292 INFO L175 Difference]: Start difference. First operand has 59 places, 48 transitions, 319 flow. Second operand 7 states and 87 transitions. [2024-06-20 16:30:42,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 66 transitions, 525 flow [2024-06-20 16:30:42,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 66 transitions, 503 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-20 16:30:42,295 INFO L231 Difference]: Finished difference. Result has 61 places, 52 transitions, 362 flow [2024-06-20 16:30:42,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=362, PETRI_PLACES=61, PETRI_TRANSITIONS=52} [2024-06-20 16:30:42,296 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 33 predicate places. [2024-06-20 16:30:42,296 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 52 transitions, 362 flow [2024-06-20 16:30:42,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:42,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:42,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:42,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-20 16:30:42,297 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)] === [2024-06-20 16:30:42,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:42,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1778123919, now seen corresponding path program 2 times [2024-06-20 16:30:42,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:42,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054986315] [2024-06-20 16:30:42,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:42,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:42,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:42,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:42,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:42,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054986315] [2024-06-20 16:30:42,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054986315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:42,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:42,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:30:42,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705666878] [2024-06-20 16:30:42,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:42,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:30:42,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:42,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:30:42,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:30:42,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:30:42,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 52 transitions, 362 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:42,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:42,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:30:42,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:43,019 INFO L124 PetriNetUnfolderBase]: 170/312 cut-off events. [2024-06-20 16:30:43,020 INFO L125 PetriNetUnfolderBase]: For 1524/1524 co-relation queries the response was YES. [2024-06-20 16:30:43,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1350 conditions, 312 events. 170/312 cut-off events. For 1524/1524 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1084 event pairs, 36 based on Foata normal form. 1/313 useless extension candidates. Maximal degree in co-relation 1319. Up to 266 conditions per place. [2024-06-20 16:30:43,021 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 46 selfloop transitions, 15 changer transitions 0/63 dead transitions. [2024-06-20 16:30:43,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 63 transitions, 515 flow [2024-06-20 16:30:43,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:30:43,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:30:43,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-20 16:30:43,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4088669950738916 [2024-06-20 16:30:43,023 INFO L175 Difference]: Start difference. First operand has 61 places, 52 transitions, 362 flow. Second operand 7 states and 83 transitions. [2024-06-20 16:30:43,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 63 transitions, 515 flow [2024-06-20 16:30:43,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 63 transitions, 482 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-20 16:30:43,027 INFO L231 Difference]: Finished difference. Result has 64 places, 53 transitions, 371 flow [2024-06-20 16:30:43,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=371, PETRI_PLACES=64, PETRI_TRANSITIONS=53} [2024-06-20 16:30:43,027 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 36 predicate places. [2024-06-20 16:30:43,027 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 53 transitions, 371 flow [2024-06-20 16:30:43,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:43,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:43,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:43,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-20 16:30:43,028 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)] === [2024-06-20 16:30:43,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:43,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1540416326, now seen corresponding path program 1 times [2024-06-20 16:30:43,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:43,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605548744] [2024-06-20 16:30:43,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:43,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:43,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:43,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:43,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:43,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605548744] [2024-06-20 16:30:43,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605548744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:43,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:43,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:30:43,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080030291] [2024-06-20 16:30:43,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:43,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:30:43,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:43,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:30:43,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:30:43,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:30:43,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 53 transitions, 371 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:43,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:43,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:30:43,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:43,789 INFO L124 PetriNetUnfolderBase]: 166/306 cut-off events. [2024-06-20 16:30:43,789 INFO L125 PetriNetUnfolderBase]: For 1677/1677 co-relation queries the response was YES. [2024-06-20 16:30:43,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1330 conditions, 306 events. 166/306 cut-off events. For 1677/1677 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1056 event pairs, 31 based on Foata normal form. 2/308 useless extension candidates. Maximal degree in co-relation 1298. Up to 209 conditions per place. [2024-06-20 16:30:43,792 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 45 selfloop transitions, 23 changer transitions 0/70 dead transitions. [2024-06-20 16:30:43,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 70 transitions, 555 flow [2024-06-20 16:30:43,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:30:43,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:30:43,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 83 transitions. [2024-06-20 16:30:43,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47701149425287354 [2024-06-20 16:30:43,793 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 371 flow. Second operand 6 states and 83 transitions. [2024-06-20 16:30:43,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 70 transitions, 555 flow [2024-06-20 16:30:43,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 70 transitions, 521 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-20 16:30:43,797 INFO L231 Difference]: Finished difference. Result has 65 places, 55 transitions, 413 flow [2024-06-20 16:30:43,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=413, PETRI_PLACES=65, PETRI_TRANSITIONS=55} [2024-06-20 16:30:43,797 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 37 predicate places. [2024-06-20 16:30:43,798 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 55 transitions, 413 flow [2024-06-20 16:30:43,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:43,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:43,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:43,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-20 16:30:43,799 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)] === [2024-06-20 16:30:43,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:43,799 INFO L85 PathProgramCache]: Analyzing trace with hash 630625065, now seen corresponding path program 1 times [2024-06-20 16:30:43,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:43,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121808904] [2024-06-20 16:30:43,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:43,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:44,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:44,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:44,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121808904] [2024-06-20 16:30:44,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121808904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:44,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:44,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:30:44,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400089693] [2024-06-20 16:30:44,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:44,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:30:44,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:44,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:30:44,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:30:44,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:30:44,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 55 transitions, 413 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:44,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:44,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:30:44,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:44,638 INFO L124 PetriNetUnfolderBase]: 170/314 cut-off events. [2024-06-20 16:30:44,638 INFO L125 PetriNetUnfolderBase]: For 2070/2070 co-relation queries the response was YES. [2024-06-20 16:30:44,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1420 conditions, 314 events. 170/314 cut-off events. For 2070/2070 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1105 event pairs, 17 based on Foata normal form. 2/316 useless extension candidates. Maximal degree in co-relation 1388. Up to 210 conditions per place. [2024-06-20 16:30:44,640 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 51 selfloop transitions, 20 changer transitions 0/73 dead transitions. [2024-06-20 16:30:44,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 73 transitions, 627 flow [2024-06-20 16:30:44,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:30:44,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:30:44,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-20 16:30:44,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40948275862068967 [2024-06-20 16:30:44,641 INFO L175 Difference]: Start difference. First operand has 65 places, 55 transitions, 413 flow. Second operand 8 states and 95 transitions. [2024-06-20 16:30:44,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 73 transitions, 627 flow [2024-06-20 16:30:44,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 73 transitions, 576 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-20 16:30:44,645 INFO L231 Difference]: Finished difference. Result has 68 places, 56 transitions, 414 flow [2024-06-20 16:30:44,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=414, PETRI_PLACES=68, PETRI_TRANSITIONS=56} [2024-06-20 16:30:44,646 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 40 predicate places. [2024-06-20 16:30:44,646 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 56 transitions, 414 flow [2024-06-20 16:30:44,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:44,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:44,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:44,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-20 16:30:44,647 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)] === [2024-06-20 16:30:44,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:44,647 INFO L85 PathProgramCache]: Analyzing trace with hash -21528169, now seen corresponding path program 2 times [2024-06-20 16:30:44,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:44,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265166108] [2024-06-20 16:30:44,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:44,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:44,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:45,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:45,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:45,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265166108] [2024-06-20 16:30:45,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265166108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:45,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:45,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:30:45,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470379851] [2024-06-20 16:30:45,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:45,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:30:45,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:45,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:30:45,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:30:45,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:30:45,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 56 transitions, 414 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:45,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:45,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:30:45,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:45,506 INFO L124 PetriNetUnfolderBase]: 174/322 cut-off events. [2024-06-20 16:30:45,507 INFO L125 PetriNetUnfolderBase]: For 1973/1973 co-relation queries the response was YES. [2024-06-20 16:30:45,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1446 conditions, 322 events. 174/322 cut-off events. For 1973/1973 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1160 event pairs, 33 based on Foata normal form. 2/324 useless extension candidates. Maximal degree in co-relation 1414. Up to 255 conditions per place. [2024-06-20 16:30:45,509 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 52 selfloop transitions, 18 changer transitions 0/72 dead transitions. [2024-06-20 16:30:45,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 72 transitions, 598 flow [2024-06-20 16:30:45,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:30:45,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:30:45,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-20 16:30:45,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40948275862068967 [2024-06-20 16:30:45,510 INFO L175 Difference]: Start difference. First operand has 68 places, 56 transitions, 414 flow. Second operand 8 states and 95 transitions. [2024-06-20 16:30:45,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 72 transitions, 598 flow [2024-06-20 16:30:45,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 72 transitions, 557 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-20 16:30:45,514 INFO L231 Difference]: Finished difference. Result has 71 places, 57 transitions, 423 flow [2024-06-20 16:30:45,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=423, PETRI_PLACES=71, PETRI_TRANSITIONS=57} [2024-06-20 16:30:45,515 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 43 predicate places. [2024-06-20 16:30:45,515 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 57 transitions, 423 flow [2024-06-20 16:30:45,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:45,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:45,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:45,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-20 16:30:45,515 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)] === [2024-06-20 16:30:45,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:45,516 INFO L85 PathProgramCache]: Analyzing trace with hash -21528045, now seen corresponding path program 1 times [2024-06-20 16:30:45,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:45,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460657517] [2024-06-20 16:30:45,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:45,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:45,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:46,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:46,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:46,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460657517] [2024-06-20 16:30:46,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460657517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:46,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:46,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:30:46,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533797448] [2024-06-20 16:30:46,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:46,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:30:46,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:46,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:30:46,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:30:46,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:30:46,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 57 transitions, 423 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:46,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:46,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:30:46,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:46,493 INFO L124 PetriNetUnfolderBase]: 180/332 cut-off events. [2024-06-20 16:30:46,493 INFO L125 PetriNetUnfolderBase]: For 2259/2259 co-relation queries the response was YES. [2024-06-20 16:30:46,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1492 conditions, 332 events. 180/332 cut-off events. For 2259/2259 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1199 event pairs, 29 based on Foata normal form. 2/334 useless extension candidates. Maximal degree in co-relation 1459. Up to 188 conditions per place. [2024-06-20 16:30:46,495 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 53 selfloop transitions, 25 changer transitions 0/80 dead transitions. [2024-06-20 16:30:46,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 80 transitions, 683 flow [2024-06-20 16:30:46,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:30:46,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:30:46,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-20 16:30:46,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44396551724137934 [2024-06-20 16:30:46,496 INFO L175 Difference]: Start difference. First operand has 71 places, 57 transitions, 423 flow. Second operand 8 states and 103 transitions. [2024-06-20 16:30:46,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 80 transitions, 683 flow [2024-06-20 16:30:46,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 80 transitions, 647 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-20 16:30:46,501 INFO L231 Difference]: Finished difference. Result has 73 places, 61 transitions, 478 flow [2024-06-20 16:30:46,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=478, PETRI_PLACES=73, PETRI_TRANSITIONS=61} [2024-06-20 16:30:46,501 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 45 predicate places. [2024-06-20 16:30:46,501 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 61 transitions, 478 flow [2024-06-20 16:30:46,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:46,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:46,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:46,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-20 16:30:46,502 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)] === [2024-06-20 16:30:46,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:46,502 INFO L85 PathProgramCache]: Analyzing trace with hash 633429139, now seen corresponding path program 2 times [2024-06-20 16:30:46,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:46,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177755661] [2024-06-20 16:30:46,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:46,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:46,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:47,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:47,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:47,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177755661] [2024-06-20 16:30:47,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177755661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:47,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:47,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:30:47,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963513004] [2024-06-20 16:30:47,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:47,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:30:47,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:47,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:30:47,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:30:47,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:30:47,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 61 transitions, 478 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:47,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:47,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:30:47,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:47,551 INFO L124 PetriNetUnfolderBase]: 186/342 cut-off events. [2024-06-20 16:30:47,551 INFO L125 PetriNetUnfolderBase]: For 2648/2648 co-relation queries the response was YES. [2024-06-20 16:30:47,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1596 conditions, 342 events. 186/342 cut-off events. For 2648/2648 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1250 event pairs, 30 based on Foata normal form. 2/344 useless extension candidates. Maximal degree in co-relation 1562. Up to 259 conditions per place. [2024-06-20 16:30:47,554 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 56 selfloop transitions, 19 changer transitions 0/77 dead transitions. [2024-06-20 16:30:47,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 77 transitions, 680 flow [2024-06-20 16:30:47,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:30:47,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:30:47,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-20 16:30:47,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41810344827586204 [2024-06-20 16:30:47,555 INFO L175 Difference]: Start difference. First operand has 73 places, 61 transitions, 478 flow. Second operand 8 states and 97 transitions. [2024-06-20 16:30:47,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 77 transitions, 680 flow [2024-06-20 16:30:47,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 77 transitions, 639 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-20 16:30:47,561 INFO L231 Difference]: Finished difference. Result has 77 places, 63 transitions, 504 flow [2024-06-20 16:30:47,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=504, PETRI_PLACES=77, PETRI_TRANSITIONS=63} [2024-06-20 16:30:47,561 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 49 predicate places. [2024-06-20 16:30:47,562 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 63 transitions, 504 flow [2024-06-20 16:30:47,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:47,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:47,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:47,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-20 16:30:47,562 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)] === [2024-06-20 16:30:47,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:47,563 INFO L85 PathProgramCache]: Analyzing trace with hash 633424489, now seen corresponding path program 3 times [2024-06-20 16:30:47,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:47,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158684723] [2024-06-20 16:30:47,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:47,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:48,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:48,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:48,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158684723] [2024-06-20 16:30:48,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158684723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:48,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:48,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:30:48,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208448460] [2024-06-20 16:30:48,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:48,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:30:48,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:48,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:30:48,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:30:48,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:30:48,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 63 transitions, 504 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:48,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:48,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:30:48,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:48,447 INFO L124 PetriNetUnfolderBase]: 192/352 cut-off events. [2024-06-20 16:30:48,447 INFO L125 PetriNetUnfolderBase]: For 3010/3010 co-relation queries the response was YES. [2024-06-20 16:30:48,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1691 conditions, 352 events. 192/352 cut-off events. For 3010/3010 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1300 event pairs, 28 based on Foata normal form. 2/354 useless extension candidates. Maximal degree in co-relation 1655. Up to 238 conditions per place. [2024-06-20 16:30:48,450 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 53 selfloop transitions, 26 changer transitions 0/81 dead transitions. [2024-06-20 16:30:48,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 81 transitions, 720 flow [2024-06-20 16:30:48,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:30:48,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:30:48,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-20 16:30:48,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4353448275862069 [2024-06-20 16:30:48,451 INFO L175 Difference]: Start difference. First operand has 77 places, 63 transitions, 504 flow. Second operand 8 states and 101 transitions. [2024-06-20 16:30:48,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 81 transitions, 720 flow [2024-06-20 16:30:48,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 81 transitions, 668 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-20 16:30:48,457 INFO L231 Difference]: Finished difference. Result has 79 places, 65 transitions, 535 flow [2024-06-20 16:30:48,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=535, PETRI_PLACES=79, PETRI_TRANSITIONS=65} [2024-06-20 16:30:48,457 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 51 predicate places. [2024-06-20 16:30:48,458 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 65 transitions, 535 flow [2024-06-20 16:30:48,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:48,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:48,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:48,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-20 16:30:48,458 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)] === [2024-06-20 16:30:48,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:48,458 INFO L85 PathProgramCache]: Analyzing trace with hash 633424365, now seen corresponding path program 3 times [2024-06-20 16:30:48,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:48,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081340761] [2024-06-20 16:30:48,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:48,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:48,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:48,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:48,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:48,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081340761] [2024-06-20 16:30:48,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081340761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:48,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:48,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:30:48,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346356858] [2024-06-20 16:30:48,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:48,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:30:48,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:48,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:30:48,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:30:49,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:30:49,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 65 transitions, 535 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:49,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:49,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:30:49,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:49,196 INFO L124 PetriNetUnfolderBase]: 189/347 cut-off events. [2024-06-20 16:30:49,196 INFO L125 PetriNetUnfolderBase]: For 3119/3119 co-relation queries the response was YES. [2024-06-20 16:30:49,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1677 conditions, 347 events. 189/347 cut-off events. For 3119/3119 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1283 event pairs, 31 based on Foata normal form. 2/349 useless extension candidates. Maximal degree in co-relation 1640. Up to 295 conditions per place. [2024-06-20 16:30:49,198 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 59 selfloop transitions, 16 changer transitions 0/77 dead transitions. [2024-06-20 16:30:49,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 77 transitions, 713 flow [2024-06-20 16:30:49,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:30:49,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:30:49,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-20 16:30:49,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39655172413793105 [2024-06-20 16:30:49,199 INFO L175 Difference]: Start difference. First operand has 79 places, 65 transitions, 535 flow. Second operand 8 states and 92 transitions. [2024-06-20 16:30:49,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 77 transitions, 713 flow [2024-06-20 16:30:49,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 77 transitions, 650 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-20 16:30:49,206 INFO L231 Difference]: Finished difference. Result has 81 places, 65 transitions, 508 flow [2024-06-20 16:30:49,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=508, PETRI_PLACES=81, PETRI_TRANSITIONS=65} [2024-06-20 16:30:49,206 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 53 predicate places. [2024-06-20 16:30:49,206 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 65 transitions, 508 flow [2024-06-20 16:30:49,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:49,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:49,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:49,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-20 16:30:49,207 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)] === [2024-06-20 16:30:49,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:49,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1664303401, now seen corresponding path program 4 times [2024-06-20 16:30:49,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:49,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153992496] [2024-06-20 16:30:49,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:49,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:49,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:49,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:49,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:49,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153992496] [2024-06-20 16:30:49,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153992496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:49,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:49,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:30:49,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227515424] [2024-06-20 16:30:49,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:49,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:30:49,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:49,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:30:49,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:30:49,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:30:49,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 65 transitions, 508 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:49,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:49,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:30:49,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:50,176 INFO L124 PetriNetUnfolderBase]: 195/357 cut-off events. [2024-06-20 16:30:50,176 INFO L125 PetriNetUnfolderBase]: For 3338/3338 co-relation queries the response was YES. [2024-06-20 16:30:50,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1700 conditions, 357 events. 195/357 cut-off events. For 3338/3338 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1323 event pairs, 26 based on Foata normal form. 2/359 useless extension candidates. Maximal degree in co-relation 1662. Up to 227 conditions per place. [2024-06-20 16:30:50,178 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 58 selfloop transitions, 30 changer transitions 0/90 dead transitions. [2024-06-20 16:30:50,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 90 transitions, 800 flow [2024-06-20 16:30:50,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:30:50,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:30:50,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 109 transitions. [2024-06-20 16:30:50,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4698275862068966 [2024-06-20 16:30:50,179 INFO L175 Difference]: Start difference. First operand has 81 places, 65 transitions, 508 flow. Second operand 8 states and 109 transitions. [2024-06-20 16:30:50,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 90 transitions, 800 flow [2024-06-20 16:30:50,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 90 transitions, 759 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-20 16:30:50,186 INFO L231 Difference]: Finished difference. Result has 82 places, 67 transitions, 558 flow [2024-06-20 16:30:50,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=558, PETRI_PLACES=82, PETRI_TRANSITIONS=67} [2024-06-20 16:30:50,186 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 54 predicate places. [2024-06-20 16:30:50,186 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 67 transitions, 558 flow [2024-06-20 16:30:50,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:50,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:50,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:50,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-20 16:30:50,187 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)] === [2024-06-20 16:30:50,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:50,187 INFO L85 PathProgramCache]: Analyzing trace with hash 748720309, now seen corresponding path program 5 times [2024-06-20 16:30:50,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:50,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225663271] [2024-06-20 16:30:50,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:50,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:50,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:50,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:50,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:50,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225663271] [2024-06-20 16:30:50,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225663271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:50,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:50,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:30:50,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27972879] [2024-06-20 16:30:50,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:50,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:30:50,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:50,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:30:50,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:30:50,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:30:50,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 67 transitions, 558 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:50,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:50,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:30:50,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:51,153 INFO L124 PetriNetUnfolderBase]: 207/377 cut-off events. [2024-06-20 16:30:51,154 INFO L125 PetriNetUnfolderBase]: For 3828/3828 co-relation queries the response was YES. [2024-06-20 16:30:51,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1867 conditions, 377 events. 207/377 cut-off events. For 3828/3828 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1418 event pairs, 29 based on Foata normal form. 2/379 useless extension candidates. Maximal degree in co-relation 1828. Up to 290 conditions per place. [2024-06-20 16:30:51,156 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 64 selfloop transitions, 23 changer transitions 0/89 dead transitions. [2024-06-20 16:30:51,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 89 transitions, 824 flow [2024-06-20 16:30:51,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:30:51,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:30:51,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-20 16:30:51,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4353448275862069 [2024-06-20 16:30:51,157 INFO L175 Difference]: Start difference. First operand has 82 places, 67 transitions, 558 flow. Second operand 8 states and 101 transitions. [2024-06-20 16:30:51,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 89 transitions, 824 flow [2024-06-20 16:30:51,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 89 transitions, 733 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-20 16:30:51,165 INFO L231 Difference]: Finished difference. Result has 84 places, 71 transitions, 572 flow [2024-06-20 16:30:51,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=572, PETRI_PLACES=84, PETRI_TRANSITIONS=71} [2024-06-20 16:30:51,165 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 56 predicate places. [2024-06-20 16:30:51,165 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 71 transitions, 572 flow [2024-06-20 16:30:51,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:51,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:51,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:51,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-20 16:30:51,171 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)] === [2024-06-20 16:30:51,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:51,172 INFO L85 PathProgramCache]: Analyzing trace with hash 748900233, now seen corresponding path program 1 times [2024-06-20 16:30:51,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:51,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424055397] [2024-06-20 16:30:51,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:51,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:51,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:52,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:52,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:52,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424055397] [2024-06-20 16:30:52,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424055397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:52,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:52,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:30:52,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517343034] [2024-06-20 16:30:52,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:52,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:30:52,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:52,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:30:52,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:30:52,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:30:52,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 71 transitions, 572 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:52,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:52,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:30:52,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:52,354 INFO L124 PetriNetUnfolderBase]: 231/429 cut-off events. [2024-06-20 16:30:52,354 INFO L125 PetriNetUnfolderBase]: For 6542/6542 co-relation queries the response was YES. [2024-06-20 16:30:52,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1981 conditions, 429 events. 231/429 cut-off events. For 6542/6542 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1730 event pairs, 33 based on Foata normal form. 14/443 useless extension candidates. Maximal degree in co-relation 1941. Up to 284 conditions per place. [2024-06-20 16:30:52,356 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 62 selfloop transitions, 19 changer transitions 10/93 dead transitions. [2024-06-20 16:30:52,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 93 transitions, 826 flow [2024-06-20 16:30:52,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:30:52,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:30:52,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-20 16:30:52,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42528735632183906 [2024-06-20 16:30:52,357 INFO L175 Difference]: Start difference. First operand has 84 places, 71 transitions, 572 flow. Second operand 9 states and 111 transitions. [2024-06-20 16:30:52,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 93 transitions, 826 flow [2024-06-20 16:30:52,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 93 transitions, 765 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-20 16:30:52,365 INFO L231 Difference]: Finished difference. Result has 88 places, 69 transitions, 545 flow [2024-06-20 16:30:52,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=511, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=545, PETRI_PLACES=88, PETRI_TRANSITIONS=69} [2024-06-20 16:30:52,366 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 60 predicate places. [2024-06-20 16:30:52,366 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 69 transitions, 545 flow [2024-06-20 16:30:52,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:52,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:52,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:52,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-20 16:30:52,367 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)] === [2024-06-20 16:30:52,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:52,367 INFO L85 PathProgramCache]: Analyzing trace with hash 748893289, now seen corresponding path program 6 times [2024-06-20 16:30:52,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:52,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966793395] [2024-06-20 16:30:52,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:52,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:52,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:53,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:53,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:53,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966793395] [2024-06-20 16:30:53,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966793395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:53,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:53,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:30:53,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170174665] [2024-06-20 16:30:53,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:53,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:30:53,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:53,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:30:53,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:30:53,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:30:53,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 69 transitions, 545 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:53,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:53,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:30:53,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:53,434 INFO L124 PetriNetUnfolderBase]: 219/409 cut-off events. [2024-06-20 16:30:53,434 INFO L125 PetriNetUnfolderBase]: For 4425/4425 co-relation queries the response was YES. [2024-06-20 16:30:53,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1921 conditions, 409 events. 219/409 cut-off events. For 4425/4425 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1625 event pairs, 37 based on Foata normal form. 2/411 useless extension candidates. Maximal degree in co-relation 1880. Up to 322 conditions per place. [2024-06-20 16:30:53,437 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 63 selfloop transitions, 20 changer transitions 0/85 dead transitions. [2024-06-20 16:30:53,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 85 transitions, 773 flow [2024-06-20 16:30:53,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:30:53,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:30:53,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-20 16:30:53,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40948275862068967 [2024-06-20 16:30:53,438 INFO L175 Difference]: Start difference. First operand has 88 places, 69 transitions, 545 flow. Second operand 8 states and 95 transitions. [2024-06-20 16:30:53,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 85 transitions, 773 flow [2024-06-20 16:30:53,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 85 transitions, 721 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-20 16:30:53,447 INFO L231 Difference]: Finished difference. Result has 87 places, 71 transitions, 572 flow [2024-06-20 16:30:53,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=572, PETRI_PLACES=87, PETRI_TRANSITIONS=71} [2024-06-20 16:30:53,448 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 59 predicate places. [2024-06-20 16:30:53,448 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 71 transitions, 572 flow [2024-06-20 16:30:53,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:53,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:53,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:53,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-20 16:30:53,448 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)] === [2024-06-20 16:30:53,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:53,449 INFO L85 PathProgramCache]: Analyzing trace with hash -54939319, now seen corresponding path program 2 times [2024-06-20 16:30:53,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:53,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555851227] [2024-06-20 16:30:53,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:53,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:53,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:54,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:54,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:54,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555851227] [2024-06-20 16:30:54,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555851227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:54,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:54,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:30:54,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378507221] [2024-06-20 16:30:54,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:54,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:30:54,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:54,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:30:54,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:30:54,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:30:54,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 71 transitions, 572 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:54,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:54,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:30:54,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:54,576 INFO L124 PetriNetUnfolderBase]: 223/417 cut-off events. [2024-06-20 16:30:54,576 INFO L125 PetriNetUnfolderBase]: For 4422/4422 co-relation queries the response was YES. [2024-06-20 16:30:54,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1949 conditions, 417 events. 223/417 cut-off events. For 4422/4422 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1661 event pairs, 42 based on Foata normal form. 2/419 useless extension candidates. Maximal degree in co-relation 1908. Up to 391 conditions per place. [2024-06-20 16:30:54,579 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 69 selfloop transitions, 11 changer transitions 0/82 dead transitions. [2024-06-20 16:30:54,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 82 transitions, 764 flow [2024-06-20 16:30:54,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:30:54,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:30:54,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-20 16:30:54,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3706896551724138 [2024-06-20 16:30:54,581 INFO L175 Difference]: Start difference. First operand has 87 places, 71 transitions, 572 flow. Second operand 8 states and 86 transitions. [2024-06-20 16:30:54,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 82 transitions, 764 flow [2024-06-20 16:30:54,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 82 transitions, 693 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-20 16:30:54,589 INFO L231 Difference]: Finished difference. Result has 88 places, 72 transitions, 539 flow [2024-06-20 16:30:54,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=539, PETRI_PLACES=88, PETRI_TRANSITIONS=72} [2024-06-20 16:30:54,590 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 60 predicate places. [2024-06-20 16:30:54,590 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 72 transitions, 539 flow [2024-06-20 16:30:54,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:54,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:54,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:54,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-20 16:30:54,591 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)] === [2024-06-20 16:30:54,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:54,591 INFO L85 PathProgramCache]: Analyzing trace with hash -510915767, now seen corresponding path program 3 times [2024-06-20 16:30:54,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:54,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395996232] [2024-06-20 16:30:54,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:54,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:55,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:55,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:55,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395996232] [2024-06-20 16:30:55,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395996232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:55,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:55,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:30:55,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403968221] [2024-06-20 16:30:55,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:55,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:30:55,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:55,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:30:55,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:30:55,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:30:55,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 72 transitions, 539 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:55,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:55,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:30:55,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:55,809 INFO L124 PetriNetUnfolderBase]: 227/425 cut-off events. [2024-06-20 16:30:55,809 INFO L125 PetriNetUnfolderBase]: For 4746/4746 co-relation queries the response was YES. [2024-06-20 16:30:55,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1918 conditions, 425 events. 227/425 cut-off events. For 4746/4746 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1708 event pairs, 37 based on Foata normal form. 2/427 useless extension candidates. Maximal degree in co-relation 1878. Up to 394 conditions per place. [2024-06-20 16:30:55,811 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 71 selfloop transitions, 11 changer transitions 0/84 dead transitions. [2024-06-20 16:30:55,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 84 transitions, 739 flow [2024-06-20 16:30:55,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:30:55,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:30:55,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-20 16:30:55,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-20 16:30:55,813 INFO L175 Difference]: Start difference. First operand has 88 places, 72 transitions, 539 flow. Second operand 8 states and 87 transitions. [2024-06-20 16:30:55,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 84 transitions, 739 flow [2024-06-20 16:30:55,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 84 transitions, 687 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-20 16:30:55,825 INFO L231 Difference]: Finished difference. Result has 88 places, 73 transitions, 527 flow [2024-06-20 16:30:55,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=527, PETRI_PLACES=88, PETRI_TRANSITIONS=73} [2024-06-20 16:30:55,825 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 60 predicate places. [2024-06-20 16:30:55,826 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 73 transitions, 527 flow [2024-06-20 16:30:55,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:55,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:55,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:55,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-20 16:30:55,826 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)] === [2024-06-20 16:30:55,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:55,827 INFO L85 PathProgramCache]: Analyzing trace with hash -510619097, now seen corresponding path program 4 times [2024-06-20 16:30:55,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:55,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091954449] [2024-06-20 16:30:55,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:55,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:55,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:56,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:56,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:56,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091954449] [2024-06-20 16:30:56,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091954449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:56,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:56,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:30:56,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286254363] [2024-06-20 16:30:56,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:56,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:30:56,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:56,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:30:56,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:30:56,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:30:56,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 73 transitions, 527 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:56,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:56,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:30:56,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:56,851 INFO L124 PetriNetUnfolderBase]: 224/420 cut-off events. [2024-06-20 16:30:56,851 INFO L125 PetriNetUnfolderBase]: For 4551/4551 co-relation queries the response was YES. [2024-06-20 16:30:56,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1841 conditions, 420 events. 224/420 cut-off events. For 4551/4551 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1690 event pairs, 34 based on Foata normal form. 2/422 useless extension candidates. Maximal degree in co-relation 1800. Up to 389 conditions per place. [2024-06-20 16:30:56,854 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 72 selfloop transitions, 10 changer transitions 0/84 dead transitions. [2024-06-20 16:30:56,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 84 transitions, 715 flow [2024-06-20 16:30:56,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:30:56,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:30:56,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-06-20 16:30:56,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36637931034482757 [2024-06-20 16:30:56,857 INFO L175 Difference]: Start difference. First operand has 88 places, 73 transitions, 527 flow. Second operand 8 states and 85 transitions. [2024-06-20 16:30:56,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 84 transitions, 715 flow [2024-06-20 16:30:56,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 84 transitions, 685 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-20 16:30:56,865 INFO L231 Difference]: Finished difference. Result has 90 places, 73 transitions, 521 flow [2024-06-20 16:30:56,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=521, PETRI_PLACES=90, PETRI_TRANSITIONS=73} [2024-06-20 16:30:56,866 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 62 predicate places. [2024-06-20 16:30:56,867 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 73 transitions, 521 flow [2024-06-20 16:30:56,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:56,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:56,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:56,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-20 16:30:56,867 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)] === [2024-06-20 16:30:56,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:56,867 INFO L85 PathProgramCache]: Analyzing trace with hash -397660959, now seen corresponding path program 7 times [2024-06-20 16:30:56,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:56,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105298170] [2024-06-20 16:30:56,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:56,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:56,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:57,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:57,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:57,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105298170] [2024-06-20 16:30:57,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105298170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:57,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:57,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:30:57,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340023860] [2024-06-20 16:30:57,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:57,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:30:57,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:57,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:30:57,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:30:57,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:30:57,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 73 transitions, 521 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:57,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:57,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:30:57,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:57,787 INFO L124 PetriNetUnfolderBase]: 220/414 cut-off events. [2024-06-20 16:30:57,787 INFO L125 PetriNetUnfolderBase]: For 4324/4324 co-relation queries the response was YES. [2024-06-20 16:30:57,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1761 conditions, 414 events. 220/414 cut-off events. For 4324/4324 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1665 event pairs, 39 based on Foata normal form. 2/416 useless extension candidates. Maximal degree in co-relation 1719. Up to 329 conditions per place. [2024-06-20 16:30:57,790 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 67 selfloop transitions, 24 changer transitions 0/93 dead transitions. [2024-06-20 16:30:57,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 93 transitions, 751 flow [2024-06-20 16:30:57,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:30:57,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:30:57,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 98 transitions. [2024-06-20 16:30:57,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4827586206896552 [2024-06-20 16:30:57,791 INFO L175 Difference]: Start difference. First operand has 90 places, 73 transitions, 521 flow. Second operand 7 states and 98 transitions. [2024-06-20 16:30:57,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 93 transitions, 751 flow [2024-06-20 16:30:57,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 93 transitions, 700 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-20 16:30:57,799 INFO L231 Difference]: Finished difference. Result has 90 places, 73 transitions, 527 flow [2024-06-20 16:30:57,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=527, PETRI_PLACES=90, PETRI_TRANSITIONS=73} [2024-06-20 16:30:57,801 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 62 predicate places. [2024-06-20 16:30:57,801 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 73 transitions, 527 flow [2024-06-20 16:30:57,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:57,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:57,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:57,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-20 16:30:57,802 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)] === [2024-06-20 16:30:57,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:57,802 INFO L85 PathProgramCache]: Analyzing trace with hash 531356525, now seen corresponding path program 1 times [2024-06-20 16:30:57,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:57,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957800895] [2024-06-20 16:30:57,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:57,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:57,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:58,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:58,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:58,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957800895] [2024-06-20 16:30:58,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957800895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:58,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:58,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:30:58,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137109619] [2024-06-20 16:30:58,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:58,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:30:58,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:58,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:30:58,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:30:58,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:30:58,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 73 transitions, 527 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:58,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:58,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:30:58,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:58,789 INFO L124 PetriNetUnfolderBase]: 247/475 cut-off events. [2024-06-20 16:30:58,790 INFO L125 PetriNetUnfolderBase]: For 8257/8257 co-relation queries the response was YES. [2024-06-20 16:30:58,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2082 conditions, 475 events. 247/475 cut-off events. For 8257/8257 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2023 event pairs, 42 based on Foata normal form. 8/483 useless extension candidates. Maximal degree in co-relation 2040. Up to 143 conditions per place. [2024-06-20 16:30:58,806 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 54 selfloop transitions, 32 changer transitions 12/100 dead transitions. [2024-06-20 16:30:58,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 100 transitions, 847 flow [2024-06-20 16:30:58,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:30:58,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:30:58,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-20 16:30:58,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4367816091954023 [2024-06-20 16:30:58,807 INFO L175 Difference]: Start difference. First operand has 90 places, 73 transitions, 527 flow. Second operand 9 states and 114 transitions. [2024-06-20 16:30:58,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 100 transitions, 847 flow [2024-06-20 16:30:58,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 100 transitions, 780 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-20 16:30:58,817 INFO L231 Difference]: Finished difference. Result has 93 places, 71 transitions, 516 flow [2024-06-20 16:30:58,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=516, PETRI_PLACES=93, PETRI_TRANSITIONS=71} [2024-06-20 16:30:58,825 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 65 predicate places. [2024-06-20 16:30:58,825 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 71 transitions, 516 flow [2024-06-20 16:30:58,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:58,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:58,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:58,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-20 16:30:58,826 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)] === [2024-06-20 16:30:58,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:58,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1925368365, now seen corresponding path program 2 times [2024-06-20 16:30:58,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:58,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189416409] [2024-06-20 16:30:58,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:58,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:58,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:59,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:59,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:59,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189416409] [2024-06-20 16:30:59,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189416409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:59,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:59,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:30:59,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367798934] [2024-06-20 16:30:59,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:59,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:30:59,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:59,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:30:59,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:30:59,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:30:59,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 71 transitions, 516 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:59,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:59,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:30:59,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:59,936 INFO L124 PetriNetUnfolderBase]: 323/611 cut-off events. [2024-06-20 16:30:59,936 INFO L125 PetriNetUnfolderBase]: For 9858/9858 co-relation queries the response was YES. [2024-06-20 16:30:59,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2679 conditions, 611 events. 323/611 cut-off events. For 9858/9858 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2774 event pairs, 128 based on Foata normal form. 10/621 useless extension candidates. Maximal degree in co-relation 2636. Up to 417 conditions per place. [2024-06-20 16:30:59,940 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 77 selfloop transitions, 33 changer transitions 11/123 dead transitions. [2024-06-20 16:30:59,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 123 transitions, 1068 flow [2024-06-20 16:30:59,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:30:59,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:30:59,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-20 16:30:59,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40344827586206894 [2024-06-20 16:30:59,941 INFO L175 Difference]: Start difference. First operand has 93 places, 71 transitions, 516 flow. Second operand 10 states and 117 transitions. [2024-06-20 16:30:59,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 123 transitions, 1068 flow [2024-06-20 16:30:59,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 123 transitions, 986 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-20 16:30:59,954 INFO L231 Difference]: Finished difference. Result has 98 places, 92 transitions, 758 flow [2024-06-20 16:30:59,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=758, PETRI_PLACES=98, PETRI_TRANSITIONS=92} [2024-06-20 16:30:59,955 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 70 predicate places. [2024-06-20 16:30:59,955 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 92 transitions, 758 flow [2024-06-20 16:30:59,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:59,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:59,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:59,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-20 16:30:59,955 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)] === [2024-06-20 16:30:59,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:59,955 INFO L85 PathProgramCache]: Analyzing trace with hash 277228763, now seen corresponding path program 3 times [2024-06-20 16:30:59,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:59,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82316002] [2024-06-20 16:30:59,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:59,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:59,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:31:00,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:31:00,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:31:00,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82316002] [2024-06-20 16:31:00,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82316002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:31:00,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:31:00,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:31:00,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365940448] [2024-06-20 16:31:00,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:31:00,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:31:00,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:31:00,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:31:00,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:31:00,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:31:00,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 92 transitions, 758 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:00,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:31:00,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:31:00,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:31:01,163 INFO L124 PetriNetUnfolderBase]: 328/621 cut-off events. [2024-06-20 16:31:01,165 INFO L125 PetriNetUnfolderBase]: For 9296/9296 co-relation queries the response was YES. [2024-06-20 16:31:01,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2905 conditions, 621 events. 328/621 cut-off events. For 9296/9296 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2829 event pairs, 72 based on Foata normal form. 10/631 useless extension candidates. Maximal degree in co-relation 2858. Up to 407 conditions per place. [2024-06-20 16:31:01,172 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 82 selfloop transitions, 35 changer transitions 12/131 dead transitions. [2024-06-20 16:31:01,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 131 transitions, 1217 flow [2024-06-20 16:31:01,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:31:01,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:31:01,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-20 16:31:01,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42758620689655175 [2024-06-20 16:31:01,174 INFO L175 Difference]: Start difference. First operand has 98 places, 92 transitions, 758 flow. Second operand 10 states and 124 transitions. [2024-06-20 16:31:01,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 131 transitions, 1217 flow [2024-06-20 16:31:01,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 131 transitions, 1183 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-20 16:31:01,191 INFO L231 Difference]: Finished difference. Result has 106 places, 96 transitions, 879 flow [2024-06-20 16:31:01,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=879, PETRI_PLACES=106, PETRI_TRANSITIONS=96} [2024-06-20 16:31:01,191 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 78 predicate places. [2024-06-20 16:31:01,192 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 96 transitions, 879 flow [2024-06-20 16:31:01,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:01,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:31:01,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:31:01,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-20 16:31:01,192 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)] === [2024-06-20 16:31:01,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:31:01,192 INFO L85 PathProgramCache]: Analyzing trace with hash 666609151, now seen corresponding path program 4 times [2024-06-20 16:31:01,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:31:01,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411153418] [2024-06-20 16:31:01,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:31:01,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:31:01,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:31:01,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:31:01,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:31:01,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411153418] [2024-06-20 16:31:01,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411153418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:31:01,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:31:01,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:31:01,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14938137] [2024-06-20 16:31:01,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:31:01,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:31:01,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:31:01,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:31:01,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:31:02,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:31:02,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 96 transitions, 879 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:02,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:31:02,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:31:02,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:31:02,343 INFO L124 PetriNetUnfolderBase]: 313/598 cut-off events. [2024-06-20 16:31:02,343 INFO L125 PetriNetUnfolderBase]: For 8963/8963 co-relation queries the response was YES. [2024-06-20 16:31:02,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2900 conditions, 598 events. 313/598 cut-off events. For 8963/8963 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2737 event pairs, 70 based on Foata normal form. 8/606 useless extension candidates. Maximal degree in co-relation 2849. Up to 394 conditions per place. [2024-06-20 16:31:02,347 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 80 selfloop transitions, 33 changer transitions 12/127 dead transitions. [2024-06-20 16:31:02,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 127 transitions, 1253 flow [2024-06-20 16:31:02,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:31:02,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:31:02,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-20 16:31:02,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41724137931034483 [2024-06-20 16:31:02,348 INFO L175 Difference]: Start difference. First operand has 106 places, 96 transitions, 879 flow. Second operand 10 states and 121 transitions. [2024-06-20 16:31:02,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 127 transitions, 1253 flow [2024-06-20 16:31:02,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 127 transitions, 1175 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-20 16:31:02,383 INFO L231 Difference]: Finished difference. Result has 110 places, 94 transitions, 848 flow [2024-06-20 16:31:02,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=848, PETRI_PLACES=110, PETRI_TRANSITIONS=94} [2024-06-20 16:31:02,384 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 82 predicate places. [2024-06-20 16:31:02,384 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 94 transitions, 848 flow [2024-06-20 16:31:02,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:02,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:31:02,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:31:02,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-20 16:31:02,384 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)] === [2024-06-20 16:31:02,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:31:02,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1390401175, now seen corresponding path program 5 times [2024-06-20 16:31:02,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:31:02,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885136882] [2024-06-20 16:31:02,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:31:02,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:31:02,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:31:03,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:31:03,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:31:03,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885136882] [2024-06-20 16:31:03,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885136882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:31:03,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:31:03,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:31:03,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419988405] [2024-06-20 16:31:03,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:31:03,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:31:03,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:31:03,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:31:03,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:31:03,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:31:03,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 94 transitions, 848 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:03,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:31:03,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:31:03,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:31:03,658 INFO L124 PetriNetUnfolderBase]: 339/652 cut-off events. [2024-06-20 16:31:03,659 INFO L125 PetriNetUnfolderBase]: For 12211/12211 co-relation queries the response was YES. [2024-06-20 16:31:03,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3238 conditions, 652 events. 339/652 cut-off events. For 12211/12211 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3096 event pairs, 85 based on Foata normal form. 8/660 useless extension candidates. Maximal degree in co-relation 3187. Up to 416 conditions per place. [2024-06-20 16:31:03,663 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 91 selfloop transitions, 29 changer transitions 7/129 dead transitions. [2024-06-20 16:31:03,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 129 transitions, 1289 flow [2024-06-20 16:31:03,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:31:03,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:31:03,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-20 16:31:03,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4413793103448276 [2024-06-20 16:31:03,665 INFO L175 Difference]: Start difference. First operand has 110 places, 94 transitions, 848 flow. Second operand 10 states and 128 transitions. [2024-06-20 16:31:03,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 129 transitions, 1289 flow [2024-06-20 16:31:03,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 129 transitions, 1213 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-20 16:31:03,682 INFO L231 Difference]: Finished difference. Result has 110 places, 97 transitions, 877 flow [2024-06-20 16:31:03,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=774, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=877, PETRI_PLACES=110, PETRI_TRANSITIONS=97} [2024-06-20 16:31:03,682 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 82 predicate places. [2024-06-20 16:31:03,682 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 97 transitions, 877 flow [2024-06-20 16:31:03,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:03,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:31:03,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:31:03,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-20 16:31:03,683 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)] === [2024-06-20 16:31:03,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:31:03,683 INFO L85 PathProgramCache]: Analyzing trace with hash 2073400941, now seen corresponding path program 6 times [2024-06-20 16:31:03,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:31:03,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578311509] [2024-06-20 16:31:03,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:31:03,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:31:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:31:04,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:31:04,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:31:04,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578311509] [2024-06-20 16:31:04,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578311509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:31:04,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:31:04,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:31:04,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168755382] [2024-06-20 16:31:04,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:31:04,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:31:04,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:31:04,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:31:04,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:31:04,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:31:04,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 97 transitions, 877 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:04,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:31:04,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:31:04,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:31:04,810 INFO L124 PetriNetUnfolderBase]: 308/591 cut-off events. [2024-06-20 16:31:04,810 INFO L125 PetriNetUnfolderBase]: For 9788/9788 co-relation queries the response was YES. [2024-06-20 16:31:04,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2841 conditions, 591 events. 308/591 cut-off events. For 9788/9788 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2726 event pairs, 76 based on Foata normal form. 10/601 useless extension candidates. Maximal degree in co-relation 2789. Up to 416 conditions per place. [2024-06-20 16:31:04,814 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 80 selfloop transitions, 25 changer transitions 15/122 dead transitions. [2024-06-20 16:31:04,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 122 transitions, 1204 flow [2024-06-20 16:31:04,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:31:04,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:31:04,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-20 16:31:04,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4206896551724138 [2024-06-20 16:31:04,815 INFO L175 Difference]: Start difference. First operand has 110 places, 97 transitions, 877 flow. Second operand 10 states and 122 transitions. [2024-06-20 16:31:04,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 122 transitions, 1204 flow [2024-06-20 16:31:04,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 122 transitions, 1153 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-20 16:31:04,829 INFO L231 Difference]: Finished difference. Result has 113 places, 93 transitions, 837 flow [2024-06-20 16:31:04,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=826, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=837, PETRI_PLACES=113, PETRI_TRANSITIONS=93} [2024-06-20 16:31:04,830 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 85 predicate places. [2024-06-20 16:31:04,830 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 93 transitions, 837 flow [2024-06-20 16:31:04,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:04,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:31:04,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:31:04,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-20 16:31:04,830 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)] === [2024-06-20 16:31:04,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:31:04,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1038932261, now seen corresponding path program 7 times [2024-06-20 16:31:04,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:31:04,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423056864] [2024-06-20 16:31:04,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:31:04,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:31:04,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:31:05,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:31:05,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:31:05,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423056864] [2024-06-20 16:31:05,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423056864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:31:05,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:31:05,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:31:05,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840932161] [2024-06-20 16:31:05,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:31:05,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:31:05,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:31:05,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:31:05,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:31:05,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:31:05,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 93 transitions, 837 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:05,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:31:05,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:31:05,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:31:06,206 INFO L124 PetriNetUnfolderBase]: 327/632 cut-off events. [2024-06-20 16:31:06,207 INFO L125 PetriNetUnfolderBase]: For 12124/12124 co-relation queries the response was YES. [2024-06-20 16:31:06,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3149 conditions, 632 events. 327/632 cut-off events. For 12124/12124 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2960 event pairs, 70 based on Foata normal form. 8/640 useless extension candidates. Maximal degree in co-relation 3097. Up to 321 conditions per place. [2024-06-20 16:31:06,210 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 72 selfloop transitions, 48 changer transitions 9/131 dead transitions. [2024-06-20 16:31:06,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 131 transitions, 1278 flow [2024-06-20 16:31:06,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:31:06,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:31:06,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-20 16:31:06,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4396551724137931 [2024-06-20 16:31:06,211 INFO L175 Difference]: Start difference. First operand has 113 places, 93 transitions, 837 flow. Second operand 12 states and 153 transitions. [2024-06-20 16:31:06,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 131 transitions, 1278 flow [2024-06-20 16:31:06,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 131 transitions, 1222 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-20 16:31:06,228 INFO L231 Difference]: Finished difference. Result has 113 places, 93 transitions, 882 flow [2024-06-20 16:31:06,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=783, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=882, PETRI_PLACES=113, PETRI_TRANSITIONS=93} [2024-06-20 16:31:06,228 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 85 predicate places. [2024-06-20 16:31:06,229 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 93 transitions, 882 flow [2024-06-20 16:31:06,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:06,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:31:06,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:31:06,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-20 16:31:06,229 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)] === [2024-06-20 16:31:06,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:31:06,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1065740441, now seen corresponding path program 8 times [2024-06-20 16:31:06,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:31:06,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887951101] [2024-06-20 16:31:06,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:31:06,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:31:06,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:31:06,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:31:06,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:31:06,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887951101] [2024-06-20 16:31:06,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887951101] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:31:06,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:31:06,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:31:06,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066922472] [2024-06-20 16:31:06,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:31:06,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:31:06,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:31:06,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:31:06,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:31:06,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:31:06,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 93 transitions, 882 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:06,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:31:06,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:31:06,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:31:07,296 INFO L124 PetriNetUnfolderBase]: 296/571 cut-off events. [2024-06-20 16:31:07,296 INFO L125 PetriNetUnfolderBase]: For 9749/9749 co-relation queries the response was YES. [2024-06-20 16:31:07,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2806 conditions, 571 events. 296/571 cut-off events. For 9749/9749 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2578 event pairs, 65 based on Foata normal form. 10/581 useless extension candidates. Maximal degree in co-relation 2754. Up to 297 conditions per place. [2024-06-20 16:31:07,300 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 50 selfloop transitions, 44 changer transitions 19/115 dead transitions. [2024-06-20 16:31:07,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 115 transitions, 1174 flow [2024-06-20 16:31:07,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:31:07,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:31:07,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-20 16:31:07,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4103448275862069 [2024-06-20 16:31:07,301 INFO L175 Difference]: Start difference. First operand has 113 places, 93 transitions, 882 flow. Second operand 10 states and 119 transitions. [2024-06-20 16:31:07,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 115 transitions, 1174 flow [2024-06-20 16:31:07,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 115 transitions, 1067 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-20 16:31:07,316 INFO L231 Difference]: Finished difference. Result has 111 places, 87 transitions, 811 flow [2024-06-20 16:31:07,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=775, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=811, PETRI_PLACES=111, PETRI_TRANSITIONS=87} [2024-06-20 16:31:07,316 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 83 predicate places. [2024-06-20 16:31:07,316 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 87 transitions, 811 flow [2024-06-20 16:31:07,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:07,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:31:07,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:31:07,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-20 16:31:07,317 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)] === [2024-06-20 16:31:07,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:31:07,318 INFO L85 PathProgramCache]: Analyzing trace with hash 401527353, now seen corresponding path program 9 times [2024-06-20 16:31:07,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:31:07,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651110224] [2024-06-20 16:31:07,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:31:07,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:31:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:31:08,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:31:08,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:31:08,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651110224] [2024-06-20 16:31:08,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651110224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:31:08,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:31:08,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:31:08,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902424322] [2024-06-20 16:31:08,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:31:08,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:31:08,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:31:08,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:31:08,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:31:08,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:31:08,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 87 transitions, 811 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:08,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:31:08,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:31:08,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:31:08,396 INFO L124 PetriNetUnfolderBase]: 320/625 cut-off events. [2024-06-20 16:31:08,396 INFO L125 PetriNetUnfolderBase]: For 12077/12077 co-relation queries the response was YES. [2024-06-20 16:31:08,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3154 conditions, 625 events. 320/625 cut-off events. For 12077/12077 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2936 event pairs, 64 based on Foata normal form. 8/633 useless extension candidates. Maximal degree in co-relation 3105. Up to 332 conditions per place. [2024-06-20 16:31:08,399 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 75 selfloop transitions, 33 changer transitions 13/123 dead transitions. [2024-06-20 16:31:08,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 123 transitions, 1261 flow [2024-06-20 16:31:08,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:31:08,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:31:08,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-20 16:31:08,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4482758620689655 [2024-06-20 16:31:08,400 INFO L175 Difference]: Start difference. First operand has 111 places, 87 transitions, 811 flow. Second operand 10 states and 130 transitions. [2024-06-20 16:31:08,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 123 transitions, 1261 flow [2024-06-20 16:31:08,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 123 transitions, 1119 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-20 16:31:08,416 INFO L231 Difference]: Finished difference. Result has 106 places, 86 transitions, 751 flow [2024-06-20 16:31:08,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=751, PETRI_PLACES=106, PETRI_TRANSITIONS=86} [2024-06-20 16:31:08,417 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 78 predicate places. [2024-06-20 16:31:08,417 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 86 transitions, 751 flow [2024-06-20 16:31:08,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:08,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:31:08,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:31:08,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-20 16:31:08,417 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)] === [2024-06-20 16:31:08,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:31:08,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1781007593, now seen corresponding path program 10 times [2024-06-20 16:31:08,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:31:08,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434219178] [2024-06-20 16:31:08,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:31:08,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:31:08,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:31:09,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:31:09,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:31:09,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434219178] [2024-06-20 16:31:09,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434219178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:31:09,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:31:09,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:31:09,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761216495] [2024-06-20 16:31:09,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:31:09,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:31:09,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:31:09,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:31:09,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:31:09,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:31:09,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 86 transitions, 751 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:09,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:31:09,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:31:09,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:31:09,816 INFO L124 PetriNetUnfolderBase]: 309/603 cut-off events. [2024-06-20 16:31:09,816 INFO L125 PetriNetUnfolderBase]: For 12264/12264 co-relation queries the response was YES. [2024-06-20 16:31:09,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2882 conditions, 603 events. 309/603 cut-off events. For 12264/12264 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2838 event pairs, 72 based on Foata normal form. 12/615 useless extension candidates. Maximal degree in co-relation 2835. Up to 419 conditions per place. [2024-06-20 16:31:09,819 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 73 selfloop transitions, 28 changer transitions 10/113 dead transitions. [2024-06-20 16:31:09,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 113 transitions, 1065 flow [2024-06-20 16:31:09,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:31:09,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:31:09,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-20 16:31:09,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41379310344827586 [2024-06-20 16:31:09,821 INFO L175 Difference]: Start difference. First operand has 106 places, 86 transitions, 751 flow. Second operand 11 states and 132 transitions. [2024-06-20 16:31:09,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 113 transitions, 1065 flow [2024-06-20 16:31:09,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 113 transitions, 1002 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-20 16:31:09,834 INFO L231 Difference]: Finished difference. Result has 110 places, 85 transitions, 747 flow [2024-06-20 16:31:09,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=747, PETRI_PLACES=110, PETRI_TRANSITIONS=85} [2024-06-20 16:31:09,835 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 82 predicate places. [2024-06-20 16:31:09,835 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 85 transitions, 747 flow [2024-06-20 16:31:09,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:09,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:31:09,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:31:09,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-20 16:31:09,836 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)] === [2024-06-20 16:31:09,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:31:09,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1780863443, now seen corresponding path program 11 times [2024-06-20 16:31:09,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:31:09,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074123129] [2024-06-20 16:31:09,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:31:09,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:31:09,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:31:10,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:31:10,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:31:10,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074123129] [2024-06-20 16:31:10,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074123129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:31:10,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:31:10,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:31:10,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157813260] [2024-06-20 16:31:10,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:31:10,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:31:10,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:31:10,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:31:10,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:31:10,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:31:10,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 85 transitions, 747 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:10,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:31:10,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:31:10,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:31:10,995 INFO L124 PetriNetUnfolderBase]: 308/608 cut-off events. [2024-06-20 16:31:10,995 INFO L125 PetriNetUnfolderBase]: For 13336/13336 co-relation queries the response was YES. [2024-06-20 16:31:10,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2901 conditions, 608 events. 308/608 cut-off events. For 13336/13336 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2910 event pairs, 84 based on Foata normal form. 16/624 useless extension candidates. Maximal degree in co-relation 2853. Up to 417 conditions per place. [2024-06-20 16:31:10,998 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 69 selfloop transitions, 19 changer transitions 17/107 dead transitions. [2024-06-20 16:31:10,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 107 transitions, 1024 flow [2024-06-20 16:31:10,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:31:10,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:31:10,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-20 16:31:11,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41724137931034483 [2024-06-20 16:31:11,000 INFO L175 Difference]: Start difference. First operand has 110 places, 85 transitions, 747 flow. Second operand 10 states and 121 transitions. [2024-06-20 16:31:11,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 107 transitions, 1024 flow [2024-06-20 16:31:11,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 107 transitions, 960 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-20 16:31:11,016 INFO L231 Difference]: Finished difference. Result has 111 places, 78 transitions, 658 flow [2024-06-20 16:31:11,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=658, PETRI_PLACES=111, PETRI_TRANSITIONS=78} [2024-06-20 16:31:11,017 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 83 predicate places. [2024-06-20 16:31:11,017 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 78 transitions, 658 flow [2024-06-20 16:31:11,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:11,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:31:11,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:31:11,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-20 16:31:11,018 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)] === [2024-06-20 16:31:11,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:31:11,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1775293301, now seen corresponding path program 1 times [2024-06-20 16:31:11,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:31:11,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643581802] [2024-06-20 16:31:11,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:31:11,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:31:11,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:31:11,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:31:11,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:31:11,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643581802] [2024-06-20 16:31:11,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643581802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:31:11,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:31:11,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:31:11,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056089088] [2024-06-20 16:31:11,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:31:11,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:31:11,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:31:11,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:31:11,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:31:11,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:31:11,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 78 transitions, 658 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:11,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:31:11,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:31:11,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:31:12,109 INFO L124 PetriNetUnfolderBase]: 269/527 cut-off events. [2024-06-20 16:31:12,110 INFO L125 PetriNetUnfolderBase]: For 9976/9976 co-relation queries the response was YES. [2024-06-20 16:31:12,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2619 conditions, 527 events. 269/527 cut-off events. For 9976/9976 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2387 event pairs, 70 based on Foata normal form. 2/529 useless extension candidates. Maximal degree in co-relation 2571. Up to 419 conditions per place. [2024-06-20 16:31:12,112 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 71 selfloop transitions, 21 changer transitions 0/94 dead transitions. [2024-06-20 16:31:12,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 94 transitions, 889 flow [2024-06-20 16:31:12,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:31:12,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:31:12,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-20 16:31:12,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3946360153256705 [2024-06-20 16:31:12,113 INFO L175 Difference]: Start difference. First operand has 111 places, 78 transitions, 658 flow. Second operand 9 states and 103 transitions. [2024-06-20 16:31:12,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 94 transitions, 889 flow [2024-06-20 16:31:12,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 94 transitions, 838 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-20 16:31:12,128 INFO L231 Difference]: Finished difference. Result has 107 places, 80 transitions, 672 flow [2024-06-20 16:31:12,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=672, PETRI_PLACES=107, PETRI_TRANSITIONS=80} [2024-06-20 16:31:12,128 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 79 predicate places. [2024-06-20 16:31:12,128 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 80 transitions, 672 flow [2024-06-20 16:31:12,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:12,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:31:12,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:31:12,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-20 16:31:12,129 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)] === [2024-06-20 16:31:12,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:31:12,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1775285861, now seen corresponding path program 2 times [2024-06-20 16:31:12,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:31:12,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466763279] [2024-06-20 16:31:12,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:31:12,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:31:12,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:31:12,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:31:12,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:31:12,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466763279] [2024-06-20 16:31:12,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466763279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:31:12,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:31:12,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:31:12,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107849678] [2024-06-20 16:31:12,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:31:12,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:31:12,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:31:12,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:31:12,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:31:12,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:31:12,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 80 transitions, 672 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:12,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:31:12,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:31:12,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:31:13,030 INFO L124 PetriNetUnfolderBase]: 273/535 cut-off events. [2024-06-20 16:31:13,030 INFO L125 PetriNetUnfolderBase]: For 9242/9242 co-relation queries the response was YES. [2024-06-20 16:31:13,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2622 conditions, 535 events. 273/535 cut-off events. For 9242/9242 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2445 event pairs, 70 based on Foata normal form. 2/537 useless extension candidates. Maximal degree in co-relation 2575. Up to 413 conditions per place. [2024-06-20 16:31:13,033 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 71 selfloop transitions, 22 changer transitions 0/95 dead transitions. [2024-06-20 16:31:13,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 95 transitions, 900 flow [2024-06-20 16:31:13,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:31:13,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:31:13,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-20 16:31:13,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39846743295019155 [2024-06-20 16:31:13,034 INFO L175 Difference]: Start difference. First operand has 107 places, 80 transitions, 672 flow. Second operand 9 states and 104 transitions. [2024-06-20 16:31:13,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 95 transitions, 900 flow [2024-06-20 16:31:13,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 95 transitions, 858 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-20 16:31:13,047 INFO L231 Difference]: Finished difference. Result has 110 places, 81 transitions, 688 flow [2024-06-20 16:31:13,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=688, PETRI_PLACES=110, PETRI_TRANSITIONS=81} [2024-06-20 16:31:13,049 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 82 predicate places. [2024-06-20 16:31:13,049 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 81 transitions, 688 flow [2024-06-20 16:31:13,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:13,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:31:13,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:31:13,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-20 16:31:13,049 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)] === [2024-06-20 16:31:13,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:31:13,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1775501063, now seen corresponding path program 12 times [2024-06-20 16:31:13,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:31:13,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120065353] [2024-06-20 16:31:13,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:31:13,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:31:13,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:31:13,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:31:13,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:31:13,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120065353] [2024-06-20 16:31:13,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120065353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:31:13,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:31:13,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:31:13,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966149535] [2024-06-20 16:31:13,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:31:13,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:31:13,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:31:13,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:31:13,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:31:13,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:31:13,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 81 transitions, 688 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:13,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:31:13,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:31:13,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:31:14,134 INFO L124 PetriNetUnfolderBase]: 260/512 cut-off events. [2024-06-20 16:31:14,135 INFO L125 PetriNetUnfolderBase]: For 9378/9378 co-relation queries the response was YES. [2024-06-20 16:31:14,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2355 conditions, 512 events. 260/512 cut-off events. For 9378/9378 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2314 event pairs, 57 based on Foata normal form. 10/522 useless extension candidates. Maximal degree in co-relation 2307. Up to 360 conditions per place. [2024-06-20 16:31:14,137 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 69 selfloop transitions, 19 changer transitions 11/101 dead transitions. [2024-06-20 16:31:14,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 101 transitions, 946 flow [2024-06-20 16:31:14,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:31:14,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:31:14,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-20 16:31:14,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-20 16:31:14,139 INFO L175 Difference]: Start difference. First operand has 110 places, 81 transitions, 688 flow. Second operand 10 states and 116 transitions. [2024-06-20 16:31:14,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 101 transitions, 946 flow [2024-06-20 16:31:14,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 101 transitions, 898 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-20 16:31:14,151 INFO L231 Difference]: Finished difference. Result has 113 places, 78 transitions, 653 flow [2024-06-20 16:31:14,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=640, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=653, PETRI_PLACES=113, PETRI_TRANSITIONS=78} [2024-06-20 16:31:14,151 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 85 predicate places. [2024-06-20 16:31:14,151 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 78 transitions, 653 flow [2024-06-20 16:31:14,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:14,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:31:14,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:31:14,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-20 16:31:14,152 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)] === [2024-06-20 16:31:14,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:31:14,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1925372085, now seen corresponding path program 13 times [2024-06-20 16:31:14,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:31:14,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738796901] [2024-06-20 16:31:14,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:31:14,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:31:14,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:31:14,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:31:14,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:31:14,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738796901] [2024-06-20 16:31:14,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738796901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:31:14,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:31:14,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:31:14,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309588478] [2024-06-20 16:31:14,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:31:14,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:31:14,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:31:14,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:31:14,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:31:14,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:31:14,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 78 transitions, 653 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:14,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:31:14,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:31:14,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:31:15,133 INFO L124 PetriNetUnfolderBase]: 246/490 cut-off events. [2024-06-20 16:31:15,134 INFO L125 PetriNetUnfolderBase]: For 9331/9331 co-relation queries the response was YES. [2024-06-20 16:31:15,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2258 conditions, 490 events. 246/490 cut-off events. For 9331/9331 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2193 event pairs, 55 based on Foata normal form. 8/498 useless extension candidates. Maximal degree in co-relation 2209. Up to 278 conditions per place. [2024-06-20 16:31:15,136 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 49 selfloop transitions, 32 changer transitions 13/96 dead transitions. [2024-06-20 16:31:15,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 96 transitions, 893 flow [2024-06-20 16:31:15,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:31:15,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:31:15,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-20 16:31:15,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4061302681992337 [2024-06-20 16:31:15,163 INFO L175 Difference]: Start difference. First operand has 113 places, 78 transitions, 653 flow. Second operand 9 states and 106 transitions. [2024-06-20 16:31:15,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 96 transitions, 893 flow [2024-06-20 16:31:15,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 96 transitions, 820 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-20 16:31:15,177 INFO L231 Difference]: Finished difference. Result has 108 places, 75 transitions, 625 flow [2024-06-20 16:31:15,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=625, PETRI_PLACES=108, PETRI_TRANSITIONS=75} [2024-06-20 16:31:15,179 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 80 predicate places. [2024-06-20 16:31:15,180 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 75 transitions, 625 flow [2024-06-20 16:31:15,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:15,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:31:15,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:31:15,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-20 16:31:15,185 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)] === [2024-06-20 16:31:15,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:31:15,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1652285723, now seen corresponding path program 14 times [2024-06-20 16:31:15,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:31:15,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290409104] [2024-06-20 16:31:15,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:31:15,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:31:15,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:31:15,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:31:15,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:31:15,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290409104] [2024-06-20 16:31:15,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290409104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:31:15,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:31:15,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:31:15,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534409244] [2024-06-20 16:31:15,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:31:15,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:31:15,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:31:15,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:31:15,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:31:15,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:31:15,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 75 transitions, 625 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:15,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:31:15,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:31:15,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:31:16,264 INFO L124 PetriNetUnfolderBase]: 268/536 cut-off events. [2024-06-20 16:31:16,264 INFO L125 PetriNetUnfolderBase]: For 12674/12674 co-relation queries the response was YES. [2024-06-20 16:31:16,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2639 conditions, 536 events. 268/536 cut-off events. For 12674/12674 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2452 event pairs, 61 based on Foata normal form. 8/544 useless extension candidates. Maximal degree in co-relation 2590. Up to 300 conditions per place. [2024-06-20 16:31:16,267 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 60 selfloop transitions, 28 changer transitions 8/98 dead transitions. [2024-06-20 16:31:16,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 98 transitions, 943 flow [2024-06-20 16:31:16,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:31:16,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:31:16,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-20 16:31:16,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4329501915708812 [2024-06-20 16:31:16,285 INFO L175 Difference]: Start difference. First operand has 108 places, 75 transitions, 625 flow. Second operand 9 states and 113 transitions. [2024-06-20 16:31:16,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 98 transitions, 943 flow [2024-06-20 16:31:16,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 98 transitions, 867 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-20 16:31:16,301 INFO L231 Difference]: Finished difference. Result has 104 places, 73 transitions, 600 flow [2024-06-20 16:31:16,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=600, PETRI_PLACES=104, PETRI_TRANSITIONS=73} [2024-06-20 16:31:16,302 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 76 predicate places. [2024-06-20 16:31:16,302 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 73 transitions, 600 flow [2024-06-20 16:31:16,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:16,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:31:16,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:31:16,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-20 16:31:16,302 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)] === [2024-06-20 16:31:16,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:31:16,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1652282003, now seen corresponding path program 15 times [2024-06-20 16:31:16,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:31:16,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000548145] [2024-06-20 16:31:16,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:31:16,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:31:16,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:31:16,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:31:16,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:31:16,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000548145] [2024-06-20 16:31:16,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000548145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:31:16,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:31:16,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:31:16,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106440520] [2024-06-20 16:31:16,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:31:16,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:31:16,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:31:16,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:31:16,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:31:17,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:31:17,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 73 transitions, 600 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:17,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:31:17,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:31:17,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:31:17,296 INFO L124 PetriNetUnfolderBase]: 237/475 cut-off events. [2024-06-20 16:31:17,296 INFO L125 PetriNetUnfolderBase]: For 8636/8636 co-relation queries the response was YES. [2024-06-20 16:31:17,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2156 conditions, 475 events. 237/475 cut-off events. For 8636/8636 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2102 event pairs, 52 based on Foata normal form. 10/485 useless extension candidates. Maximal degree in co-relation 2109. Up to 300 conditions per place. [2024-06-20 16:31:17,299 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 49 selfloop transitions, 24 changer transitions 16/91 dead transitions. [2024-06-20 16:31:17,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 91 transitions, 832 flow [2024-06-20 16:31:17,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:31:17,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:31:17,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-20 16:31:17,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4099616858237548 [2024-06-20 16:31:17,300 INFO L175 Difference]: Start difference. First operand has 104 places, 73 transitions, 600 flow. Second operand 9 states and 107 transitions. [2024-06-20 16:31:17,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 91 transitions, 832 flow [2024-06-20 16:31:17,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 91 transitions, 774 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-20 16:31:17,309 INFO L231 Difference]: Finished difference. Result has 103 places, 67 transitions, 544 flow [2024-06-20 16:31:17,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=544, PETRI_PLACES=103, PETRI_TRANSITIONS=67} [2024-06-20 16:31:17,310 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 75 predicate places. [2024-06-20 16:31:17,310 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 67 transitions, 544 flow [2024-06-20 16:31:17,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:17,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:31:17,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:31:17,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-20 16:31:17,312 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)] === [2024-06-20 16:31:17,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:31:17,312 INFO L85 PathProgramCache]: Analyzing trace with hash -101018741, now seen corresponding path program 16 times [2024-06-20 16:31:17,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:31:17,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904392838] [2024-06-20 16:31:17,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:31:17,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:31:17,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:31:17,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:31:17,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:31:17,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904392838] [2024-06-20 16:31:17,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904392838] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:31:17,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:31:17,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:31:17,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959858533] [2024-06-20 16:31:17,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:31:17,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:31:17,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:31:17,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:31:17,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:31:18,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:31:18,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 67 transitions, 544 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:18,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:31:18,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:31:18,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:31:18,283 INFO L124 PetriNetUnfolderBase]: 198/386 cut-off events. [2024-06-20 16:31:18,284 INFO L125 PetriNetUnfolderBase]: For 7308/7308 co-relation queries the response was YES. [2024-06-20 16:31:18,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1801 conditions, 386 events. 198/386 cut-off events. For 7308/7308 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1539 event pairs, 37 based on Foata normal form. 8/394 useless extension candidates. Maximal degree in co-relation 1755. Up to 129 conditions per place. [2024-06-20 16:31:18,286 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 45 selfloop transitions, 33 changer transitions 7/87 dead transitions. [2024-06-20 16:31:18,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 87 transitions, 816 flow [2024-06-20 16:31:18,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:31:18,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:31:18,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-20 16:31:18,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4099616858237548 [2024-06-20 16:31:18,316 INFO L175 Difference]: Start difference. First operand has 103 places, 67 transitions, 544 flow. Second operand 9 states and 107 transitions. [2024-06-20 16:31:18,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 87 transitions, 816 flow [2024-06-20 16:31:18,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 87 transitions, 727 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-20 16:31:18,327 INFO L231 Difference]: Finished difference. Result has 95 places, 65 transitions, 515 flow [2024-06-20 16:31:18,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=515, PETRI_PLACES=95, PETRI_TRANSITIONS=65} [2024-06-20 16:31:18,329 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 67 predicate places. [2024-06-20 16:31:18,331 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 65 transitions, 515 flow [2024-06-20 16:31:18,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:18,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:31:18,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:31:18,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-20 16:31:18,332 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)] === [2024-06-20 16:31:18,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:31:18,334 INFO L85 PathProgramCache]: Analyzing trace with hash -95300729, now seen corresponding path program 3 times [2024-06-20 16:31:18,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:31:18,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346899052] [2024-06-20 16:31:18,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:31:18,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:31:18,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:31:19,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:31:19,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:31:19,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346899052] [2024-06-20 16:31:19,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346899052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:31:19,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:31:19,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:31:19,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713871661] [2024-06-20 16:31:19,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:31:19,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:31:19,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:31:19,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:31:19,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:31:19,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:31:19,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 65 transitions, 515 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:19,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:31:19,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:31:19,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:31:19,546 INFO L124 PetriNetUnfolderBase]: 184/356 cut-off events. [2024-06-20 16:31:19,546 INFO L125 PetriNetUnfolderBase]: For 4884/4884 co-relation queries the response was YES. [2024-06-20 16:31:19,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1685 conditions, 356 events. 184/356 cut-off events. For 4884/4884 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1381 event pairs, 43 based on Foata normal form. 2/358 useless extension candidates. Maximal degree in co-relation 1642. Up to 263 conditions per place. [2024-06-20 16:31:19,547 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 50 selfloop transitions, 24 changer transitions 0/76 dead transitions. [2024-06-20 16:31:19,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 76 transitions, 695 flow [2024-06-20 16:31:19,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:31:19,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:31:19,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-20 16:31:19,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3879310344827586 [2024-06-20 16:31:19,548 INFO L175 Difference]: Start difference. First operand has 95 places, 65 transitions, 515 flow. Second operand 8 states and 90 transitions. [2024-06-20 16:31:19,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 76 transitions, 695 flow [2024-06-20 16:31:19,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 76 transitions, 633 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-20 16:31:19,562 INFO L231 Difference]: Finished difference. Result has 93 places, 66 transitions, 519 flow [2024-06-20 16:31:19,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=519, PETRI_PLACES=93, PETRI_TRANSITIONS=66} [2024-06-20 16:31:19,562 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 65 predicate places. [2024-06-20 16:31:19,563 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 66 transitions, 519 flow [2024-06-20 16:31:19,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:19,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:31:19,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:31:19,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-20 16:31:19,563 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)] === [2024-06-20 16:31:19,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:31:19,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1921894369, now seen corresponding path program 4 times [2024-06-20 16:31:19,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:31:19,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945946144] [2024-06-20 16:31:19,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:31:19,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:31:19,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:31:20,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:31:20,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:31:20,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945946144] [2024-06-20 16:31:20,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945946144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:31:20,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:31:20,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:31:20,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589049814] [2024-06-20 16:31:20,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:31:20,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:31:20,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:31:20,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:31:20,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:31:20,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:31:20,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 66 transitions, 519 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:20,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:31:20,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:31:20,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:31:20,568 INFO L124 PetriNetUnfolderBase]: 188/364 cut-off events. [2024-06-20 16:31:20,568 INFO L125 PetriNetUnfolderBase]: For 4428/4428 co-relation queries the response was YES. [2024-06-20 16:31:20,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1712 conditions, 364 events. 188/364 cut-off events. For 4428/4428 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1434 event pairs, 49 based on Foata normal form. 2/366 useless extension candidates. Maximal degree in co-relation 1670. Up to 277 conditions per place. [2024-06-20 16:31:20,570 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 54 selfloop transitions, 22 changer transitions 0/78 dead transitions. [2024-06-20 16:31:20,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 78 transitions, 707 flow [2024-06-20 16:31:20,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:31:20,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:31:20,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-20 16:31:20,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3922413793103448 [2024-06-20 16:31:20,571 INFO L175 Difference]: Start difference. First operand has 93 places, 66 transitions, 519 flow. Second operand 8 states and 91 transitions. [2024-06-20 16:31:20,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 78 transitions, 707 flow [2024-06-20 16:31:20,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 78 transitions, 651 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-20 16:31:20,577 INFO L231 Difference]: Finished difference. Result has 95 places, 67 transitions, 525 flow [2024-06-20 16:31:20,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=525, PETRI_PLACES=95, PETRI_TRANSITIONS=67} [2024-06-20 16:31:20,577 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 67 predicate places. [2024-06-20 16:31:20,578 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 67 transitions, 525 flow [2024-06-20 16:31:20,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:20,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:31:20,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:31:20,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-20 16:31:20,578 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)] === [2024-06-20 16:31:20,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:31:20,579 INFO L85 PathProgramCache]: Analyzing trace with hash -95293289, now seen corresponding path program 5 times [2024-06-20 16:31:20,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:31:20,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283568967] [2024-06-20 16:31:20,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:31:20,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:31:20,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:31:21,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:31:21,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:31:21,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283568967] [2024-06-20 16:31:21,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283568967] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:31:21,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:31:21,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:31:21,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788575666] [2024-06-20 16:31:21,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:31:21,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:31:21,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:31:21,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:31:21,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:31:21,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:31:21,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 67 transitions, 525 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:21,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:31:21,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:31:21,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:31:21,738 INFO L124 PetriNetUnfolderBase]: 198/382 cut-off events. [2024-06-20 16:31:21,739 INFO L125 PetriNetUnfolderBase]: For 4501/4501 co-relation queries the response was YES. [2024-06-20 16:31:21,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1777 conditions, 382 events. 198/382 cut-off events. For 4501/4501 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1520 event pairs, 38 based on Foata normal form. 2/384 useless extension candidates. Maximal degree in co-relation 1734. Up to 228 conditions per place. [2024-06-20 16:31:21,740 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 52 selfloop transitions, 31 changer transitions 0/85 dead transitions. [2024-06-20 16:31:21,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 85 transitions, 766 flow [2024-06-20 16:31:21,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:31:21,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:31:21,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-20 16:31:21,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40086206896551724 [2024-06-20 16:31:21,745 INFO L175 Difference]: Start difference. First operand has 95 places, 67 transitions, 525 flow. Second operand 8 states and 93 transitions. [2024-06-20 16:31:21,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 85 transitions, 766 flow [2024-06-20 16:31:21,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 85 transitions, 716 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-20 16:31:21,753 INFO L231 Difference]: Finished difference. Result has 99 places, 73 transitions, 620 flow [2024-06-20 16:31:21,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=620, PETRI_PLACES=99, PETRI_TRANSITIONS=73} [2024-06-20 16:31:21,753 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 71 predicate places. [2024-06-20 16:31:21,753 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 73 transitions, 620 flow [2024-06-20 16:31:21,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:21,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:31:21,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:31:21,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-20 16:31:21,754 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:31:21,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:31:21,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1927250797, now seen corresponding path program 17 times [2024-06-20 16:31:21,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:31:21,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129637320] [2024-06-20 16:31:21,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:31:21,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:31:21,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:31:22,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:31:22,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:31:22,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129637320] [2024-06-20 16:31:22,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129637320] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:31:22,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:31:22,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:31:22,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272372127] [2024-06-20 16:31:22,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:31:22,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:31:22,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:31:22,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:31:22,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:31:22,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:31:22,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 73 transitions, 620 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:22,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:31:22,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:31:22,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:31:22,813 INFO L124 PetriNetUnfolderBase]: 222/438 cut-off events. [2024-06-20 16:31:22,814 INFO L125 PetriNetUnfolderBase]: For 8103/8103 co-relation queries the response was YES. [2024-06-20 16:31:22,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2045 conditions, 438 events. 222/438 cut-off events. For 8103/8103 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1884 event pairs, 47 based on Foata normal form. 16/454 useless extension candidates. Maximal degree in co-relation 1999. Up to 267 conditions per place. [2024-06-20 16:31:22,816 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 51 selfloop transitions, 16 changer transitions 20/89 dead transitions. [2024-06-20 16:31:22,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 89 transitions, 850 flow [2024-06-20 16:31:22,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:31:22,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:31:22,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-20 16:31:22,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39846743295019155 [2024-06-20 16:31:22,817 INFO L175 Difference]: Start difference. First operand has 99 places, 73 transitions, 620 flow. Second operand 9 states and 104 transitions. [2024-06-20 16:31:22,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 89 transitions, 850 flow [2024-06-20 16:31:22,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 89 transitions, 799 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-20 16:31:22,826 INFO L231 Difference]: Finished difference. Result has 104 places, 63 transitions, 523 flow [2024-06-20 16:31:22,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=523, PETRI_PLACES=104, PETRI_TRANSITIONS=63} [2024-06-20 16:31:22,826 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 76 predicate places. [2024-06-20 16:31:22,826 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 63 transitions, 523 flow [2024-06-20 16:31:22,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:22,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:31:22,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:31:22,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-20 16:31:22,827 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:31:22,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:31:22,827 INFO L85 PathProgramCache]: Analyzing trace with hash -473553829, now seen corresponding path program 18 times [2024-06-20 16:31:22,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:31:22,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867681685] [2024-06-20 16:31:22,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:31:22,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:31:22,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:31:23,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:31:23,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:31:23,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867681685] [2024-06-20 16:31:23,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867681685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:31:23,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:31:23,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:31:23,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330298671] [2024-06-20 16:31:23,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:31:23,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:31:23,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:31:23,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:31:23,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:31:23,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:31:23,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 63 transitions, 523 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:23,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:31:23,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:31:23,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:31:23,686 INFO L124 PetriNetUnfolderBase]: 180/364 cut-off events. [2024-06-20 16:31:23,686 INFO L125 PetriNetUnfolderBase]: For 6687/6687 co-relation queries the response was YES. [2024-06-20 16:31:23,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1722 conditions, 364 events. 180/364 cut-off events. For 6687/6687 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1512 event pairs, 43 based on Foata normal form. 10/374 useless extension candidates. Maximal degree in co-relation 1687. Up to 208 conditions per place. [2024-06-20 16:31:23,688 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 40 selfloop transitions, 26 changer transitions 12/80 dead transitions. [2024-06-20 16:31:23,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 80 transitions, 739 flow [2024-06-20 16:31:23,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:31:23,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:31:23,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-20 16:31:23,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4061302681992337 [2024-06-20 16:31:23,689 INFO L175 Difference]: Start difference. First operand has 104 places, 63 transitions, 523 flow. Second operand 9 states and 106 transitions. [2024-06-20 16:31:23,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 80 transitions, 739 flow [2024-06-20 16:31:23,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 80 transitions, 699 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-20 16:31:23,696 INFO L231 Difference]: Finished difference. Result has 97 places, 59 transitions, 501 flow [2024-06-20 16:31:23,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=501, PETRI_PLACES=97, PETRI_TRANSITIONS=59} [2024-06-20 16:31:23,697 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 69 predicate places. [2024-06-20 16:31:23,697 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 59 transitions, 501 flow [2024-06-20 16:31:23,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:23,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:31:23,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:31:23,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-20 16:31:23,697 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:31:23,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:31:23,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1735493865, now seen corresponding path program 19 times [2024-06-20 16:31:23,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:31:23,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241534820] [2024-06-20 16:31:23,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:31:23,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:31:23,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:31:24,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:31:24,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:31:24,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241534820] [2024-06-20 16:31:24,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241534820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:31:24,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:31:24,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:31:24,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652917221] [2024-06-20 16:31:24,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:31:24,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:31:24,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:31:24,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:31:24,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:31:24,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:31:24,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 59 transitions, 501 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:24,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:31:24,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:31:24,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:31:24,716 INFO L124 PetriNetUnfolderBase]: 171/349 cut-off events. [2024-06-20 16:31:24,716 INFO L125 PetriNetUnfolderBase]: For 5575/5575 co-relation queries the response was YES. [2024-06-20 16:31:24,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1634 conditions, 349 events. 171/349 cut-off events. For 5575/5575 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1416 event pairs, 51 based on Foata normal form. 10/359 useless extension candidates. Maximal degree in co-relation 1601. Up to 238 conditions per place. [2024-06-20 16:31:24,718 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 49 selfloop transitions, 13 changer transitions 11/75 dead transitions. [2024-06-20 16:31:24,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 75 transitions, 703 flow [2024-06-20 16:31:24,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:31:24,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:31:24,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-20 16:31:24,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3831417624521073 [2024-06-20 16:31:24,719 INFO L175 Difference]: Start difference. First operand has 97 places, 59 transitions, 501 flow. Second operand 9 states and 100 transitions. [2024-06-20 16:31:24,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 75 transitions, 703 flow [2024-06-20 16:31:24,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 75 transitions, 637 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-20 16:31:24,725 INFO L231 Difference]: Finished difference. Result has 93 places, 56 transitions, 440 flow [2024-06-20 16:31:24,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=440, PETRI_PLACES=93, PETRI_TRANSITIONS=56} [2024-06-20 16:31:24,726 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 65 predicate places. [2024-06-20 16:31:24,726 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 56 transitions, 440 flow [2024-06-20 16:31:24,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:24,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:31:24,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:31:24,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-20 16:31:24,727 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:31:24,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:31:24,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1423657337, now seen corresponding path program 6 times [2024-06-20 16:31:24,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:31:24,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163851338] [2024-06-20 16:31:24,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:31:24,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:31:24,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:31:25,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:31:25,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:31:25,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163851338] [2024-06-20 16:31:25,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163851338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:31:25,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:31:25,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:31:25,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347785933] [2024-06-20 16:31:25,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:31:25,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:31:25,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:31:25,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:31:25,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:31:25,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:31:25,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 56 transitions, 440 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:25,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:31:25,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:31:25,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:31:25,695 INFO L124 PetriNetUnfolderBase]: 149/307 cut-off events. [2024-06-20 16:31:25,696 INFO L125 PetriNetUnfolderBase]: For 3687/3687 co-relation queries the response was YES. [2024-06-20 16:31:25,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1420 conditions, 307 events. 149/307 cut-off events. For 3687/3687 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1180 event pairs, 41 based on Foata normal form. 2/309 useless extension candidates. Maximal degree in co-relation 1389. Up to 206 conditions per place. [2024-06-20 16:31:25,697 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 41 selfloop transitions, 23 changer transitions 0/66 dead transitions. [2024-06-20 16:31:25,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 66 transitions, 602 flow [2024-06-20 16:31:25,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:31:25,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:31:25,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-06-20 16:31:25,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4039408866995074 [2024-06-20 16:31:25,698 INFO L175 Difference]: Start difference. First operand has 93 places, 56 transitions, 440 flow. Second operand 7 states and 82 transitions. [2024-06-20 16:31:25,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 66 transitions, 602 flow [2024-06-20 16:31:25,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 66 transitions, 572 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-20 16:31:25,704 INFO L231 Difference]: Finished difference. Result has 89 places, 57 transitions, 475 flow [2024-06-20 16:31:25,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=475, PETRI_PLACES=89, PETRI_TRANSITIONS=57} [2024-06-20 16:31:25,704 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 61 predicate places. [2024-06-20 16:31:25,704 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 57 transitions, 475 flow [2024-06-20 16:31:25,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:25,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:31:25,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:31:25,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-20 16:31:25,705 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:31:25,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:31:25,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1680367097, now seen corresponding path program 7 times [2024-06-20 16:31:25,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:31:25,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631131411] [2024-06-20 16:31:25,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:31:25,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:31:25,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:31:26,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:31:26,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:31:26,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631131411] [2024-06-20 16:31:26,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631131411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:31:26,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:31:26,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:31:26,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176658681] [2024-06-20 16:31:26,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:31:26,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:31:26,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:31:26,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:31:26,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:31:26,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:31:26,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 57 transitions, 475 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:26,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:31:26,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:31:26,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:31:26,678 INFO L124 PetriNetUnfolderBase]: 153/315 cut-off events. [2024-06-20 16:31:26,678 INFO L125 PetriNetUnfolderBase]: For 3478/3478 co-relation queries the response was YES. [2024-06-20 16:31:26,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1481 conditions, 315 events. 153/315 cut-off events. For 3478/3478 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1228 event pairs, 37 based on Foata normal form. 2/317 useless extension candidates. Maximal degree in co-relation 1451. Up to 160 conditions per place. [2024-06-20 16:31:26,680 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 38 selfloop transitions, 27 changer transitions 0/67 dead transitions. [2024-06-20 16:31:26,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 67 transitions, 639 flow [2024-06-20 16:31:26,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:31:26,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:31:26,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-06-20 16:31:26,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4039408866995074 [2024-06-20 16:31:26,681 INFO L175 Difference]: Start difference. First operand has 89 places, 57 transitions, 475 flow. Second operand 7 states and 82 transitions. [2024-06-20 16:31:26,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 67 transitions, 639 flow [2024-06-20 16:31:26,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 67 transitions, 586 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-20 16:31:26,687 INFO L231 Difference]: Finished difference. Result has 91 places, 58 transitions, 499 flow [2024-06-20 16:31:26,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=499, PETRI_PLACES=91, PETRI_TRANSITIONS=58} [2024-06-20 16:31:26,688 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 63 predicate places. [2024-06-20 16:31:26,688 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 58 transitions, 499 flow [2024-06-20 16:31:26,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:26,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:31:26,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:31:26,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-20 16:31:26,688 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:31:26,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:31:26,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1423651385, now seen corresponding path program 20 times [2024-06-20 16:31:26,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:31:26,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133929834] [2024-06-20 16:31:26,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:31:26,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:31:26,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:31:27,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:31:27,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:31:27,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133929834] [2024-06-20 16:31:27,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133929834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:31:27,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:31:27,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:31:27,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508120457] [2024-06-20 16:31:27,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:31:27,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:31:27,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:31:27,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:31:27,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:31:27,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:31:27,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 58 transitions, 499 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:27,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:31:27,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:31:27,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:31:27,810 INFO L124 PetriNetUnfolderBase]: 140/292 cut-off events. [2024-06-20 16:31:27,810 INFO L125 PetriNetUnfolderBase]: For 3205/3205 co-relation queries the response was YES. [2024-06-20 16:31:27,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1270 conditions, 292 events. 140/292 cut-off events. For 3205/3205 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1123 event pairs, 32 based on Foata normal form. 10/302 useless extension candidates. Maximal degree in co-relation 1239. Up to 177 conditions per place. [2024-06-20 16:31:27,812 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 39 selfloop transitions, 19 changer transitions 12/72 dead transitions. [2024-06-20 16:31:27,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 72 transitions, 681 flow [2024-06-20 16:31:27,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:31:27,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:31:27,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-20 16:31:27,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40948275862068967 [2024-06-20 16:31:27,813 INFO L175 Difference]: Start difference. First operand has 91 places, 58 transitions, 499 flow. Second operand 8 states and 95 transitions. [2024-06-20 16:31:27,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 72 transitions, 681 flow [2024-06-20 16:31:27,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 72 transitions, 624 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-20 16:31:27,818 INFO L231 Difference]: Finished difference. Result has 94 places, 53 transitions, 434 flow [2024-06-20 16:31:27,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=434, PETRI_PLACES=94, PETRI_TRANSITIONS=53} [2024-06-20 16:31:27,818 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 66 predicate places. [2024-06-20 16:31:27,819 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 53 transitions, 434 flow [2024-06-20 16:31:27,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:27,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:31:27,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:31:27,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-20 16:31:27,819 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:31:27,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:31:27,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1689563867, now seen corresponding path program 8 times [2024-06-20 16:31:27,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:31:27,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607486147] [2024-06-20 16:31:27,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:31:27,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:31:27,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:31:28,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:31:28,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:31:28,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607486147] [2024-06-20 16:31:28,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607486147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:31:28,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:31:28,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:31:28,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886291550] [2024-06-20 16:31:28,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:31:28,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:31:28,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:31:28,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:31:28,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:31:28,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:31:28,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 53 transitions, 434 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:28,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:31:28,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:31:28,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:31:28,750 INFO L124 PetriNetUnfolderBase]: 109/235 cut-off events. [2024-06-20 16:31:28,750 INFO L125 PetriNetUnfolderBase]: For 1611/1611 co-relation queries the response was YES. [2024-06-20 16:31:28,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 999 conditions, 235 events. 109/235 cut-off events. For 1611/1611 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 856 event pairs, 37 based on Foata normal form. 2/237 useless extension candidates. Maximal degree in co-relation 967. Up to 195 conditions per place. [2024-06-20 16:31:28,752 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 49 selfloop transitions, 11 changer transitions 0/62 dead transitions. [2024-06-20 16:31:28,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 62 transitions, 574 flow [2024-06-20 16:31:28,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:31:28,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:31:28,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-20 16:31:28,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3842364532019704 [2024-06-20 16:31:28,761 INFO L175 Difference]: Start difference. First operand has 94 places, 53 transitions, 434 flow. Second operand 7 states and 78 transitions. [2024-06-20 16:31:28,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 62 transitions, 574 flow [2024-06-20 16:31:28,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 62 transitions, 520 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-20 16:31:28,766 INFO L231 Difference]: Finished difference. Result has 88 places, 53 transitions, 406 flow [2024-06-20 16:31:28,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=406, PETRI_PLACES=88, PETRI_TRANSITIONS=53} [2024-06-20 16:31:28,766 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 60 predicate places. [2024-06-20 16:31:28,767 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 53 transitions, 406 flow [2024-06-20 16:31:28,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:28,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:31:28,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:31:28,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-20 16:31:28,767 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:31:28,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:31:28,767 INFO L85 PathProgramCache]: Analyzing trace with hash -260064198, now seen corresponding path program 1 times [2024-06-20 16:31:28,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:31:28,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775100664] [2024-06-20 16:31:28,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:31:28,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:31:28,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:31:29,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:31:29,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:31:29,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775100664] [2024-06-20 16:31:29,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775100664] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:31:29,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:31:29,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:31:29,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205256772] [2024-06-20 16:31:29,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:31:29,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:31:29,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:31:29,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:31:29,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:31:29,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:31:29,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 53 transitions, 406 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:29,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:31:29,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:31:29,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:31:30,124 INFO L124 PetriNetUnfolderBase]: 117/255 cut-off events. [2024-06-20 16:31:30,125 INFO L125 PetriNetUnfolderBase]: For 1974/1974 co-relation queries the response was YES. [2024-06-20 16:31:30,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1001 conditions, 255 events. 117/255 cut-off events. For 1974/1974 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 967 event pairs, 25 based on Foata normal form. 6/261 useless extension candidates. Maximal degree in co-relation 971. Up to 156 conditions per place. [2024-06-20 16:31:30,126 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 40 selfloop transitions, 8 changer transitions 20/70 dead transitions. [2024-06-20 16:31:30,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 70 transitions, 586 flow [2024-06-20 16:31:30,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:31:30,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:31:30,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-20 16:31:30,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3689655172413793 [2024-06-20 16:31:30,127 INFO L175 Difference]: Start difference. First operand has 88 places, 53 transitions, 406 flow. Second operand 10 states and 107 transitions. [2024-06-20 16:31:30,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 70 transitions, 586 flow [2024-06-20 16:31:30,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 70 transitions, 544 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-20 16:31:30,131 INFO L231 Difference]: Finished difference. Result has 92 places, 46 transitions, 320 flow [2024-06-20 16:31:30,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=320, PETRI_PLACES=92, PETRI_TRANSITIONS=46} [2024-06-20 16:31:30,131 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 64 predicate places. [2024-06-20 16:31:30,131 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 46 transitions, 320 flow [2024-06-20 16:31:30,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:30,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:31:30,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:31:30,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-20 16:31:30,132 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:31:30,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:31:30,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1340876072, now seen corresponding path program 2 times [2024-06-20 16:31:30,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:31:30,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979287107] [2024-06-20 16:31:30,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:31:30,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:31:30,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:31:31,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:31:31,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:31:31,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979287107] [2024-06-20 16:31:31,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979287107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:31:31,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:31:31,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:31:31,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218558471] [2024-06-20 16:31:31,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:31:31,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:31:31,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:31:31,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:31:31,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:31:31,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:31:31,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 46 transitions, 320 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:31,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:31:31,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:31:31,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:31:31,367 INFO L124 PetriNetUnfolderBase]: 103/221 cut-off events. [2024-06-20 16:31:31,367 INFO L125 PetriNetUnfolderBase]: For 2039/2039 co-relation queries the response was YES. [2024-06-20 16:31:31,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 823 conditions, 221 events. 103/221 cut-off events. For 2039/2039 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 780 event pairs, 21 based on Foata normal form. 6/227 useless extension candidates. Maximal degree in co-relation 792. Up to 105 conditions per place. [2024-06-20 16:31:31,368 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 34 selfloop transitions, 11 changer transitions 13/60 dead transitions. [2024-06-20 16:31:31,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 60 transitions, 472 flow [2024-06-20 16:31:31,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:31:31,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:31:31,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-20 16:31:31,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.367816091954023 [2024-06-20 16:31:31,392 INFO L175 Difference]: Start difference. First operand has 92 places, 46 transitions, 320 flow. Second operand 9 states and 96 transitions. [2024-06-20 16:31:31,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 60 transitions, 472 flow [2024-06-20 16:31:31,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 60 transitions, 426 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-20 16:31:31,396 INFO L231 Difference]: Finished difference. Result has 78 places, 39 transitions, 257 flow [2024-06-20 16:31:31,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=257, PETRI_PLACES=78, PETRI_TRANSITIONS=39} [2024-06-20 16:31:31,396 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 50 predicate places. [2024-06-20 16:31:31,396 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 39 transitions, 257 flow [2024-06-20 16:31:31,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:31,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:31:31,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:31:31,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-20 16:31:31,397 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:31:31,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:31:31,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1168155542, now seen corresponding path program 3 times [2024-06-20 16:31:31,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:31:31,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425574297] [2024-06-20 16:31:31,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:31:31,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:31:31,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:31:32,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:31:32,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:31:32,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425574297] [2024-06-20 16:31:32,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425574297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:31:32,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:31:32,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:31:32,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870490330] [2024-06-20 16:31:32,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:31:32,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:31:32,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:31:32,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:31:32,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:31:32,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:31:32,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 39 transitions, 257 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:32,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:31:32,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:31:32,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:31:32,674 INFO L124 PetriNetUnfolderBase]: 83/181 cut-off events. [2024-06-20 16:31:32,674 INFO L125 PetriNetUnfolderBase]: For 1937/1937 co-relation queries the response was YES. [2024-06-20 16:31:32,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 669 conditions, 181 events. 83/181 cut-off events. For 1937/1937 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 577 event pairs, 22 based on Foata normal form. 6/187 useless extension candidates. Maximal degree in co-relation 643. Up to 118 conditions per place. [2024-06-20 16:31:32,675 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 27 selfloop transitions, 3 changer transitions 19/51 dead transitions. [2024-06-20 16:31:32,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 51 transitions, 385 flow [2024-06-20 16:31:32,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:31:32,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:31:32,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-06-20 16:31:32,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3486590038314176 [2024-06-20 16:31:32,676 INFO L175 Difference]: Start difference. First operand has 78 places, 39 transitions, 257 flow. Second operand 9 states and 91 transitions. [2024-06-20 16:31:32,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 51 transitions, 385 flow [2024-06-20 16:31:32,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 51 transitions, 355 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-20 16:31:32,679 INFO L231 Difference]: Finished difference. Result has 70 places, 31 transitions, 180 flow [2024-06-20 16:31:32,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=180, PETRI_PLACES=70, PETRI_TRANSITIONS=31} [2024-06-20 16:31:32,679 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 42 predicate places. [2024-06-20 16:31:32,679 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 31 transitions, 180 flow [2024-06-20 16:31:32,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:32,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:31:32,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:31:32,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-20 16:31:32,680 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:31:32,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:31:32,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1183705222, now seen corresponding path program 4 times [2024-06-20 16:31:32,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:31:32,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751869463] [2024-06-20 16:31:32,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:31:32,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:31:32,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:31:33,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:31:33,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:31:33,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751869463] [2024-06-20 16:31:33,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751869463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:31:33,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:31:33,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:31:33,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522916241] [2024-06-20 16:31:33,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:31:33,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:31:33,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:31:33,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:31:33,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:31:33,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:31:33,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 31 transitions, 180 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:33,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:31:33,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:31:33,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:31:33,734 INFO L124 PetriNetUnfolderBase]: 68/149 cut-off events. [2024-06-20 16:31:33,734 INFO L125 PetriNetUnfolderBase]: For 1417/1417 co-relation queries the response was YES. [2024-06-20 16:31:33,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518 conditions, 149 events. 68/149 cut-off events. For 1417/1417 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 437 event pairs, 22 based on Foata normal form. 6/155 useless extension candidates. Maximal degree in co-relation 495. Up to 80 conditions per place. [2024-06-20 16:31:33,735 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 20 selfloop transitions, 7 changer transitions 12/41 dead transitions. [2024-06-20 16:31:33,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 41 transitions, 282 flow [2024-06-20 16:31:33,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:31:33,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:31:33,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 83 transitions. [2024-06-20 16:31:33,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3577586206896552 [2024-06-20 16:31:33,736 INFO L175 Difference]: Start difference. First operand has 70 places, 31 transitions, 180 flow. Second operand 8 states and 83 transitions. [2024-06-20 16:31:33,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 41 transitions, 282 flow [2024-06-20 16:31:33,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 41 transitions, 254 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-20 16:31:33,737 INFO L231 Difference]: Finished difference. Result has 56 places, 27 transitions, 145 flow [2024-06-20 16:31:33,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=145, PETRI_PLACES=56, PETRI_TRANSITIONS=27} [2024-06-20 16:31:33,738 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 28 predicate places. [2024-06-20 16:31:33,738 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 27 transitions, 145 flow [2024-06-20 16:31:33,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:33,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:31:33,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:31:33,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-20 16:31:33,739 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:31:33,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:31:33,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1411837012, now seen corresponding path program 5 times [2024-06-20 16:31:33,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:31:33,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109828644] [2024-06-20 16:31:33,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:31:33,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:31:33,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:31:34,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:31:34,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:31:34,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109828644] [2024-06-20 16:31:34,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109828644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:31:34,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:31:34,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:31:34,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753910226] [2024-06-20 16:31:34,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:31:34,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:31:34,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:31:34,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:31:34,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:31:34,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:31:34,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 27 transitions, 145 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:34,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:31:34,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:31:34,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:31:34,909 INFO L124 PetriNetUnfolderBase]: 55/126 cut-off events. [2024-06-20 16:31:34,909 INFO L125 PetriNetUnfolderBase]: For 908/908 co-relation queries the response was YES. [2024-06-20 16:31:34,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 126 events. 55/126 cut-off events. For 908/908 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 333 event pairs, 20 based on Foata normal form. 6/132 useless extension candidates. Maximal degree in co-relation 403. Up to 60 conditions per place. [2024-06-20 16:31:34,909 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 16 selfloop transitions, 3 changer transitions 16/37 dead transitions. [2024-06-20 16:31:34,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 37 transitions, 237 flow [2024-06-20 16:31:34,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:31:34,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:31:34,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-06-20 16:31:34,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35344827586206895 [2024-06-20 16:31:34,910 INFO L175 Difference]: Start difference. First operand has 56 places, 27 transitions, 145 flow. Second operand 8 states and 82 transitions. [2024-06-20 16:31:34,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 37 transitions, 237 flow [2024-06-20 16:31:34,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 37 transitions, 217 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-20 16:31:34,911 INFO L231 Difference]: Finished difference. Result has 52 places, 20 transitions, 90 flow [2024-06-20 16:31:34,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=90, PETRI_PLACES=52, PETRI_TRANSITIONS=20} [2024-06-20 16:31:34,913 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 24 predicate places. [2024-06-20 16:31:34,913 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 20 transitions, 90 flow [2024-06-20 16:31:34,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:34,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:31:34,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:31:34,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-20 16:31:34,913 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:31:34,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:31:34,914 INFO L85 PathProgramCache]: Analyzing trace with hash 836873060, now seen corresponding path program 6 times [2024-06-20 16:31:34,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:31:34,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378252610] [2024-06-20 16:31:34,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:31:34,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:31:34,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:31:35,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:31:35,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:31:35,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378252610] [2024-06-20 16:31:35,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378252610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:31:35,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:31:35,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:31:35,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68313072] [2024-06-20 16:31:35,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:31:35,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:31:35,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:31:35,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:31:35,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:31:35,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 16:31:35,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 20 transitions, 90 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:35,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:31:35,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 16:31:35,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:31:35,911 INFO L124 PetriNetUnfolderBase]: 25/64 cut-off events. [2024-06-20 16:31:35,911 INFO L125 PetriNetUnfolderBase]: For 306/306 co-relation queries the response was YES. [2024-06-20 16:31:35,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 64 events. 25/64 cut-off events. For 306/306 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 96 event pairs, 3 based on Foata normal form. 6/70 useless extension candidates. Maximal degree in co-relation 161. Up to 24 conditions per place. [2024-06-20 16:31:35,912 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2024-06-20 16:31:35,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 26 transitions, 130 flow [2024-06-20 16:31:35,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:31:35,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:31:35,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 73 transitions. [2024-06-20 16:31:35,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3146551724137931 [2024-06-20 16:31:35,912 INFO L175 Difference]: Start difference. First operand has 52 places, 20 transitions, 90 flow. Second operand 8 states and 73 transitions. [2024-06-20 16:31:35,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 26 transitions, 130 flow [2024-06-20 16:31:35,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 26 transitions, 106 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-20 16:31:35,913 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2024-06-20 16:31:35,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2024-06-20 16:31:35,913 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 10 predicate places. [2024-06-20 16:31:35,913 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2024-06-20 16:31:35,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:31:35,915 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-20 16:31:35,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-20 16:31:35,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-20 16:31:35,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-20 16:31:35,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-20 16:31:35,917 INFO L445 BasicCegarLoop]: Path program histogram: [20, 8, 7, 6, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:31:35,920 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-20 16:31:35,920 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-20 16:31:35,923 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-20 16:31:35,923 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-20 16:31:35,923 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.06 04:31:35 BasicIcfg [2024-06-20 16:31:35,923 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-20 16:31:35,924 INFO L158 Benchmark]: Toolchain (without parser) took 63093.74ms. Allocated memory was 148.9MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 110.0MB in the beginning and 1.0GB in the end (delta: -915.4MB). Peak memory consumption was 176.1MB. Max. memory is 16.1GB. [2024-06-20 16:31:35,924 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 121.6MB. Free memory is still 78.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-20 16:31:35,924 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 148.9MB. Free memory is still 115.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-20 16:31:35,924 INFO L158 Benchmark]: CACSL2BoogieTranslator took 471.28ms. Allocated memory is still 148.9MB. Free memory was 110.0MB in the beginning and 77.7MB in the end (delta: 32.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-06-20 16:31:35,924 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.14ms. Allocated memory is still 148.9MB. Free memory was 77.7MB in the beginning and 75.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-20 16:31:35,925 INFO L158 Benchmark]: Boogie Preprocessor took 57.05ms. Allocated memory is still 148.9MB. Free memory was 75.0MB in the beginning and 72.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-20 16:31:35,925 INFO L158 Benchmark]: RCFGBuilder took 580.81ms. Allocated memory is still 148.9MB. Free memory was 72.1MB in the beginning and 82.8MB in the end (delta: -10.7MB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. [2024-06-20 16:31:35,925 INFO L158 Benchmark]: TraceAbstraction took 61945.60ms. Allocated memory was 148.9MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 82.8MB in the beginning and 1.0GB in the end (delta: -942.5MB). Peak memory consumption was 147.9MB. Max. memory is 16.1GB. [2024-06-20 16:31:35,926 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 121.6MB. Free memory is still 78.0MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.15ms. Allocated memory is still 148.9MB. Free memory is still 115.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 471.28ms. Allocated memory is still 148.9MB. Free memory was 110.0MB in the beginning and 77.7MB in the end (delta: 32.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.14ms. Allocated memory is still 148.9MB. Free memory was 77.7MB in the beginning and 75.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.05ms. Allocated memory is still 148.9MB. Free memory was 75.0MB in the beginning and 72.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 580.81ms. Allocated memory is still 148.9MB. Free memory was 72.1MB in the beginning and 82.8MB in the end (delta: -10.7MB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. * TraceAbstraction took 61945.60ms. Allocated memory was 148.9MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 82.8MB in the beginning and 1.0GB in the end (delta: -942.5MB). Peak memory consumption was 147.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 808]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 809]: 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, 46 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: 61.9s, OverallIterations: 61, TraceHistogramMax: 1, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 17.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3447 SdHoareTripleChecker+Valid, 11.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2875 mSDsluCounter, 2618 SdHoareTripleChecker+Invalid, 9.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2285 mSDsCounter, 830 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18210 IncrementalHoareTripleChecker+Invalid, 19040 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 830 mSolverCounterUnsat, 333 mSDtfsCounter, 18210 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 564 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 562 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 13.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=882occurred in iteration=34, InterpolantAutomatonStates: 496, 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, 0.5s SatisfiabilityAnalysisTime, 42.8s InterpolantComputationTime, 901 NumberOfCodeBlocks, 901 NumberOfCodeBlocksAsserted, 61 NumberOfCheckSat, 840 ConstructedInterpolants, 0 QuantifiedInterpolants, 33809 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 61 InterpolantComputations, 61 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! [2024-06-20 16:31:35,951 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE