./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.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/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f 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/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i ./goblint.2024-05-21_14-57-05.files/protection/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.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-bcb38a6-m [2024-06-04 15:04:11,950 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 15:04:11,983 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 15:04:11,986 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 15:04:11,986 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 15:04:11,998 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 15:04:11,999 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 15:04:11,999 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 15:04:11,999 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 15:04:12,000 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 15:04:12,000 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 15:04:12,000 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 15:04:12,001 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 15:04:12,001 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 15:04:12,001 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 15:04:12,001 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 15:04:12,001 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 15:04:12,002 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 15:04:12,002 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 15:04:12,002 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 15:04:12,002 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 15:04:12,016 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 15:04:12,016 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 15:04:12,017 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 15:04:12,017 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 15:04:12,017 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 15:04:12,017 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 15:04:12,017 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 15:04:12,018 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 15:04:12,018 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 15:04:12,018 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 15:04:12,018 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 15:04:12,019 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 15:04:12,019 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 15:04:12,019 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 15:04:12,019 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 15:04:12,019 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 15:04:12,019 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 15:04:12,020 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 15:04:12,020 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 15:04:12,020 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 15:04:12,020 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 15:04:12,021 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 15:04:12,021 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 15:04:12,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 15:04:12,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 15:04:12,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 15:04:12,241 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 15:04:12,242 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 15:04:12,243 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.yml/witness.yml [2024-06-04 15:04:12,395 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 15:04:12,395 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 15:04:12,397 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i [2024-06-04 15:04:13,396 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 15:04:13,604 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 15:04:13,605 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i [2024-06-04 15:04:13,618 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5dbe33fb/e90a1b53a3214ac296b8b0f05858882e/FLAGefe1a3e58 [2024-06-04 15:04:13,630 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5dbe33fb/e90a1b53a3214ac296b8b0f05858882e [2024-06-04 15:04:13,631 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 15:04:13,632 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 15:04:13,634 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 15:04:13,634 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 15:04:13,637 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 15:04:13,638 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:04:12" (1/2) ... [2024-06-04 15:04:13,639 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@408e9080 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:04:13, skipping insertion in model container [2024-06-04 15:04:13,639 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:04:12" (1/2) ... [2024-06-04 15:04:13,640 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@528cd5be and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:04:13, skipping insertion in model container [2024-06-04 15:04:13,640 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 03:04:13" (2/2) ... [2024-06-04 15:04:13,641 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@408e9080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:04:13, skipping insertion in model container [2024-06-04 15:04:13,641 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 03:04:13" (2/2) ... [2024-06-04 15:04:13,641 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 15:04:13,738 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 15:04:13,739 INFO L97 edCorrectnessWitness]: Location invariant before [L821-L821] ((((((((((((((((! multithreaded || z$read_delayed_var == 0) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0) [2024-06-04 15:04:13,739 INFO L97 edCorrectnessWitness]: Location invariant before [L820-L820] ((((((((((((((((! multithreaded || z$read_delayed_var == 0) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0) [2024-06-04 15:04:13,739 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 15:04:13,739 INFO L106 edCorrectnessWitness]: ghost_update [L818-L818] multithreaded = 1; [2024-06-04 15:04:13,802 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 15:04:14,085 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 15:04:14,092 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-04 15:04:14,207 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 15:04:14,246 INFO L206 MainTranslator]: Completed translation [2024-06-04 15:04:14,247 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:04:14 WrapperNode [2024-06-04 15:04:14,247 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 15:04:14,248 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 15:04:14,248 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 15:04:14,249 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 15:04:14,254 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:04:14" (1/1) ... [2024-06-04 15:04:14,282 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:04:14" (1/1) ... [2024-06-04 15:04:14,315 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 115 [2024-06-04 15:04:14,315 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 15:04:14,316 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 15:04:14,317 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 15:04:14,317 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 15:04:14,325 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:04:14" (1/1) ... [2024-06-04 15:04:14,325 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:04:14" (1/1) ... [2024-06-04 15:04:14,340 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:04:14" (1/1) ... [2024-06-04 15:04:14,355 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]. [2024-06-04 15:04:14,359 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:04:14" (1/1) ... [2024-06-04 15:04:14,359 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:04:14" (1/1) ... [2024-06-04 15:04:14,369 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:04:14" (1/1) ... [2024-06-04 15:04:14,376 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:04:14" (1/1) ... [2024-06-04 15:04:14,377 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:04:14" (1/1) ... [2024-06-04 15:04:14,383 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:04:14" (1/1) ... [2024-06-04 15:04:14,385 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 15:04:14,386 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 15:04:14,387 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 15:04:14,387 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 15:04:14,387 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:04:14" (1/1) ... [2024-06-04 15:04:14,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 15:04:14,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 15:04:14,409 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) [2024-06-04 15:04:14,424 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 [2024-06-04 15:04:14,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-04 15:04:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 15:04:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-04 15:04:14,445 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-04 15:04:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-04 15:04:14,445 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-04 15:04:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 15:04:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-04 15:04:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 15:04:14,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 15:04:14,448 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-04 15:04:14,534 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 15:04:14,536 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 15:04:14,796 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 15:04:14,796 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 15:04:14,995 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 15:04:14,995 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-04 15:04:14,997 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 03:04:14 BoogieIcfgContainer [2024-06-04 15:04:14,997 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 15:04:14,999 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 15:04:15,000 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 15:04:15,002 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 15:04:15,002 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:04:12" (1/4) ... [2024-06-04 15:04:15,006 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@716816db and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 03:04:15, skipping insertion in model container [2024-06-04 15:04:15,007 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 03:04:13" (2/4) ... [2024-06-04 15:04:15,008 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@716816db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 03:04:15, skipping insertion in model container [2024-06-04 15:04:15,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:04:14" (3/4) ... [2024-06-04 15:04:15,008 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@716816db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 03:04:15, skipping insertion in model container [2024-06-04 15:04:15,009 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 03:04:14" (4/4) ... [2024-06-04 15:04:15,010 INFO L112 eAbstractionObserver]: Analyzing ICFG mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i [2024-06-04 15:04:15,023 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 15:04:15,023 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-04 15:04:15,024 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 15:04:15,059 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-04 15:04:15,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-04 15:04:15,115 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-04 15:04:15,116 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 15:04:15,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 0/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-04 15:04:15,117 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-04 15:04:15,120 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-04 15:04:15,133 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 15:04:15,141 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;@6c2e7817, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 15:04:15,142 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-04 15:04:15,146 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 15:04:15,146 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-04 15:04:15,146 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 15:04:15,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:15,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-04 15:04:15,148 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)] === [2024-06-04 15:04:15,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:15,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1723506688, now seen corresponding path program 1 times [2024-06-04 15:04:15,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:15,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235688431] [2024-06-04 15:04:15,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:15,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:15,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:16,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:16,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:16,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235688431] [2024-06-04 15:04:16,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235688431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:16,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:16,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-04 15:04:16,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570730011] [2024-06-04 15:04:16,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:16,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 15:04:16,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:16,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 15:04:16,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 15:04:16,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-04 15:04:16,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:04:16,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:16,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-04 15:04:16,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:16,216 INFO L124 PetriNetUnfolderBase]: 153/294 cut-off events. [2024-06-04 15:04:16,217 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-04 15:04:16,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 589 conditions, 294 events. 153/294 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1087 event pairs, 89 based on Foata normal form. 1/283 useless extension candidates. Maximal degree in co-relation 575. Up to 272 conditions per place. [2024-06-04 15:04:16,222 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 23 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-04 15:04:16,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 121 flow [2024-06-04 15:04:16,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 15:04:16,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 15:04:16,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2024-06-04 15:04:16,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5729166666666666 [2024-06-04 15:04:16,233 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 55 transitions. [2024-06-04 15:04:16,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 121 flow [2024-06-04 15:04:16,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-04 15:04:16,236 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-04 15:04:16,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-06-04 15:04:16,240 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-04 15:04:16,240 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-04 15:04:16,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:04:16,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:16,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:16,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 15:04:16,241 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)] === [2024-06-04 15:04:16,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:16,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1566654583, now seen corresponding path program 1 times [2024-06-04 15:04:16,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:16,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926915105] [2024-06-04 15:04:16,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:16,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:16,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:16,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:16,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:16,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926915105] [2024-06-04 15:04:16,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926915105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:16,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:16,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 15:04:16,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397701255] [2024-06-04 15:04:16,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:16,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 15:04:16,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:16,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 15:04:16,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-04 15:04:16,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-04 15:04:16,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:04:16,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:16,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-04 15:04:16,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:16,830 INFO L124 PetriNetUnfolderBase]: 150/294 cut-off events. [2024-06-04 15:04:16,830 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-06-04 15:04:16,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 664 conditions, 294 events. 150/294 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1077 event pairs, 68 based on Foata normal form. 2/292 useless extension candidates. Maximal degree in co-relation 649. Up to 258 conditions per place. [2024-06-04 15:04:16,833 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 27 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-06-04 15:04:16,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 163 flow [2024-06-04 15:04:16,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 15:04:16,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 15:04:16,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 70 transitions. [2024-06-04 15:04:16,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-06-04 15:04:16,834 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 70 transitions. [2024-06-04 15:04:16,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 163 flow [2024-06-04 15:04:16,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-04 15:04:16,835 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-04 15:04:16,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-06-04 15:04:16,836 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-04 15:04:16,836 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-04 15:04:16,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:04:16,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:16,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:16,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 15:04:16,836 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)] === [2024-06-04 15:04:16,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:16,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1230432702, now seen corresponding path program 1 times [2024-06-04 15:04:16,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:16,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839783647] [2024-06-04 15:04:16,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:16,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:16,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:17,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:17,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:17,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839783647] [2024-06-04 15:04:17,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839783647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:17,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:17,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 15:04:17,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269903195] [2024-06-04 15:04:17,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:17,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 15:04:17,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:17,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 15:04:17,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-04 15:04:17,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:04:17,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 flow. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:04:17,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:17,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:04:17,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:17,721 INFO L124 PetriNetUnfolderBase]: 180/341 cut-off events. [2024-06-04 15:04:17,721 INFO L125 PetriNetUnfolderBase]: For 187/187 co-relation queries the response was YES. [2024-06-04 15:04:17,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 855 conditions, 341 events. 180/341 cut-off events. For 187/187 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1239 event pairs, 52 based on Foata normal form. 2/337 useless extension candidates. Maximal degree in co-relation 838. Up to 291 conditions per place. [2024-06-04 15:04:17,725 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 36 selfloop transitions, 9 changer transitions 0/48 dead transitions. [2024-06-04 15:04:17,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 48 transitions, 244 flow [2024-06-04 15:04:17,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:04:17,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:04:17,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 95 transitions. [2024-06-04 15:04:17,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947916666666667 [2024-06-04 15:04:17,729 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 6 states and 95 transitions. [2024-06-04 15:04:17,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 48 transitions, 244 flow [2024-06-04 15:04:17,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 48 transitions, 232 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-04 15:04:17,733 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 136 flow [2024-06-04 15:04:17,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=136, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2024-06-04 15:04:17,734 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2024-06-04 15:04:17,734 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 136 flow [2024-06-04 15:04:17,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:04:17,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:17,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:17,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-04 15:04:17,735 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)] === [2024-06-04 15:04:17,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:17,735 INFO L85 PathProgramCache]: Analyzing trace with hash -511291276, now seen corresponding path program 1 times [2024-06-04 15:04:17,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:17,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94975067] [2024-06-04 15:04:17,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:17,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:17,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:18,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:18,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:18,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94975067] [2024-06-04 15:04:18,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94975067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:18,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:18,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:04:18,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861704300] [2024-06-04 15:04:18,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:18,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:04:18,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:18,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:04:18,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:04:18,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:04:18,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 136 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 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) [2024-06-04 15:04:18,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:18,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:04:18,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:18,724 INFO L124 PetriNetUnfolderBase]: 176/331 cut-off events. [2024-06-04 15:04:18,724 INFO L125 PetriNetUnfolderBase]: For 345/345 co-relation queries the response was YES. [2024-06-04 15:04:18,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 930 conditions, 331 events. 176/331 cut-off events. For 345/345 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1163 event pairs, 30 based on Foata normal form. 4/327 useless extension candidates. Maximal degree in co-relation 911. Up to 265 conditions per place. [2024-06-04 15:04:18,726 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 36 selfloop transitions, 10 changer transitions 0/49 dead transitions. [2024-06-04 15:04:18,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 49 transitions, 264 flow [2024-06-04 15:04:18,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:04:18,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:04:18,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 104 transitions. [2024-06-04 15:04:18,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-04 15:04:18,728 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 136 flow. Second operand 7 states and 104 transitions. [2024-06-04 15:04:18,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 49 transitions, 264 flow [2024-06-04 15:04:18,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 49 transitions, 247 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-04 15:04:18,730 INFO L231 Difference]: Finished difference. Result has 43 places, 31 transitions, 135 flow [2024-06-04 15:04:18,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=135, PETRI_PLACES=43, PETRI_TRANSITIONS=31} [2024-06-04 15:04:18,731 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 12 predicate places. [2024-06-04 15:04:18,731 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 31 transitions, 135 flow [2024-06-04 15:04:18,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 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) [2024-06-04 15:04:18,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:18,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:18,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-04 15:04:18,732 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:04:18,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:18,732 INFO L85 PathProgramCache]: Analyzing trace with hash -640432288, now seen corresponding path program 1 times [2024-06-04 15:04:18,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:18,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970718978] [2024-06-04 15:04:18,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:18,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:18,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:19,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:19,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:19,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970718978] [2024-06-04 15:04:19,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970718978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:19,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:19,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 15:04:19,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434994451] [2024-06-04 15:04:19,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:19,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 15:04:19,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:19,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 15:04:19,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-04 15:04:19,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:04:19,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 31 transitions, 135 flow. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 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) [2024-06-04 15:04:19,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:19,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:04:19,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:19,433 INFO L124 PetriNetUnfolderBase]: 174/328 cut-off events. [2024-06-04 15:04:19,433 INFO L125 PetriNetUnfolderBase]: For 461/461 co-relation queries the response was YES. [2024-06-04 15:04:19,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 970 conditions, 328 events. 174/328 cut-off events. For 461/461 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1151 event pairs, 47 based on Foata normal form. 1/327 useless extension candidates. Maximal degree in co-relation 950. Up to 304 conditions per place. [2024-06-04 15:04:19,435 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 29 selfloop transitions, 6 changer transitions 0/38 dead transitions. [2024-06-04 15:04:19,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 38 transitions, 223 flow [2024-06-04 15:04:19,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 15:04:19,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 15:04:19,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 65 transitions. [2024-06-04 15:04:19,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 15:04:19,436 INFO L175 Difference]: Start difference. First operand has 43 places, 31 transitions, 135 flow. Second operand 5 states and 65 transitions. [2024-06-04 15:04:19,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 38 transitions, 223 flow [2024-06-04 15:04:19,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 38 transitions, 199 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-04 15:04:19,438 INFO L231 Difference]: Finished difference. Result has 43 places, 33 transitions, 138 flow [2024-06-04 15:04:19,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=138, PETRI_PLACES=43, PETRI_TRANSITIONS=33} [2024-06-04 15:04:19,439 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 12 predicate places. [2024-06-04 15:04:19,439 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 33 transitions, 138 flow [2024-06-04 15:04:19,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 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) [2024-06-04 15:04:19,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:19,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:19,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-04 15:04:19,440 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)] === [2024-06-04 15:04:19,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:19,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1621436392, now seen corresponding path program 1 times [2024-06-04 15:04:19,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:19,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648529580] [2024-06-04 15:04:19,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:19,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:19,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:20,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:20,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:20,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648529580] [2024-06-04 15:04:20,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648529580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:20,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:20,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:04:20,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427904989] [2024-06-04 15:04:20,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:20,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:04:20,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:20,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:04:20,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:04:20,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:04:20,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 138 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:04:20,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:20,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:04:20,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:20,356 INFO L124 PetriNetUnfolderBase]: 199/358 cut-off events. [2024-06-04 15:04:20,357 INFO L125 PetriNetUnfolderBase]: For 718/718 co-relation queries the response was YES. [2024-06-04 15:04:20,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1123 conditions, 358 events. 199/358 cut-off events. For 718/718 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1221 event pairs, 55 based on Foata normal form. 1/357 useless extension candidates. Maximal degree in co-relation 1101. Up to 343 conditions per place. [2024-06-04 15:04:20,359 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 31 selfloop transitions, 8 changer transitions 0/41 dead transitions. [2024-06-04 15:04:20,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 41 transitions, 238 flow [2024-06-04 15:04:20,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:04:20,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:04:20,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-06-04 15:04:20,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-04 15:04:20,361 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 138 flow. Second operand 6 states and 70 transitions. [2024-06-04 15:04:20,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 41 transitions, 238 flow [2024-06-04 15:04:20,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 41 transitions, 227 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-04 15:04:20,364 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 160 flow [2024-06-04 15:04:20,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=160, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2024-06-04 15:04:20,365 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 15 predicate places. [2024-06-04 15:04:20,365 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 160 flow [2024-06-04 15:04:20,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:04:20,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:20,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:20,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-04 15:04:20,366 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)] === [2024-06-04 15:04:20,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:20,366 INFO L85 PathProgramCache]: Analyzing trace with hash -444124955, now seen corresponding path program 1 times [2024-06-04 15:04:20,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:20,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472715179] [2024-06-04 15:04:20,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:20,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:20,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:20,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:20,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:20,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472715179] [2024-06-04 15:04:20,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472715179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:20,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:20,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:04:20,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141463121] [2024-06-04 15:04:20,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:20,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:04:20,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:20,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:04:20,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:04:20,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:04:20,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 160 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 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) [2024-06-04 15:04:20,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:20,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:04:20,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:21,108 INFO L124 PetriNetUnfolderBase]: 188/349 cut-off events. [2024-06-04 15:04:21,108 INFO L125 PetriNetUnfolderBase]: For 991/991 co-relation queries the response was YES. [2024-06-04 15:04:21,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1165 conditions, 349 events. 188/349 cut-off events. For 991/991 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1223 event pairs, 53 based on Foata normal form. 1/348 useless extension candidates. Maximal degree in co-relation 1142. Up to 304 conditions per place. [2024-06-04 15:04:21,111 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 34 selfloop transitions, 11 changer transitions 0/49 dead transitions. [2024-06-04 15:04:21,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 49 transitions, 302 flow [2024-06-04 15:04:21,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:04:21,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:04:21,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 81 transitions. [2024-06-04 15:04:21,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-04 15:04:21,113 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 160 flow. Second operand 6 states and 81 transitions. [2024-06-04 15:04:21,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 49 transitions, 302 flow [2024-06-04 15:04:21,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 49 transitions, 285 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-04 15:04:21,116 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 190 flow [2024-06-04 15:04:21,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=190, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2024-06-04 15:04:21,117 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2024-06-04 15:04:21,117 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 190 flow [2024-06-04 15:04:21,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 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) [2024-06-04 15:04:21,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:21,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:21,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-04 15:04:21,118 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)] === [2024-06-04 15:04:21,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:21,119 INFO L85 PathProgramCache]: Analyzing trace with hash -416211935, now seen corresponding path program 2 times [2024-06-04 15:04:21,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:21,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863421895] [2024-06-04 15:04:21,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:21,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:21,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:21,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:21,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:21,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863421895] [2024-06-04 15:04:21,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863421895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:21,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:21,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:04:21,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892592754] [2024-06-04 15:04:21,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:21,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:04:21,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:21,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:04:21,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:04:21,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:04:21,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 190 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 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) [2024-06-04 15:04:21,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:21,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:04:21,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:21,876 INFO L124 PetriNetUnfolderBase]: 186/346 cut-off events. [2024-06-04 15:04:21,876 INFO L125 PetriNetUnfolderBase]: For 1268/1268 co-relation queries the response was YES. [2024-06-04 15:04:21,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1230 conditions, 346 events. 186/346 cut-off events. For 1268/1268 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1207 event pairs, 52 based on Foata normal form. 1/345 useless extension candidates. Maximal degree in co-relation 1206. Up to 314 conditions per place. [2024-06-04 15:04:21,878 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 33 selfloop transitions, 8 changer transitions 0/45 dead transitions. [2024-06-04 15:04:21,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 45 transitions, 286 flow [2024-06-04 15:04:21,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:04:21,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:04:21,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 75 transitions. [2024-06-04 15:04:21,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-04 15:04:21,879 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 190 flow. Second operand 6 states and 75 transitions. [2024-06-04 15:04:21,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 45 transitions, 286 flow [2024-06-04 15:04:21,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 272 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-04 15:04:21,881 INFO L231 Difference]: Finished difference. Result has 52 places, 39 transitions, 197 flow [2024-06-04 15:04:21,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=197, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2024-06-04 15:04:21,882 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 21 predicate places. [2024-06-04 15:04:21,882 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 197 flow [2024-06-04 15:04:21,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 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) [2024-06-04 15:04:21,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:21,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:21,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-04 15:04:21,883 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)] === [2024-06-04 15:04:21,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:21,883 INFO L85 PathProgramCache]: Analyzing trace with hash -443909629, now seen corresponding path program 1 times [2024-06-04 15:04:21,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:21,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300257855] [2024-06-04 15:04:21,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:21,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:21,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:22,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:22,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:22,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300257855] [2024-06-04 15:04:22,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300257855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:22,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:22,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:04:22,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124162589] [2024-06-04 15:04:22,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:22,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:04:22,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:22,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:04:22,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:04:22,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:04:22,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 197 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) [2024-06-04 15:04:22,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:22,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:04:22,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:22,820 INFO L124 PetriNetUnfolderBase]: 194/351 cut-off events. [2024-06-04 15:04:22,820 INFO L125 PetriNetUnfolderBase]: For 1472/1472 co-relation queries the response was YES. [2024-06-04 15:04:22,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1268 conditions, 351 events. 194/351 cut-off events. For 1472/1472 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1181 event pairs, 51 based on Foata normal form. 3/352 useless extension candidates. Maximal degree in co-relation 1242. Up to 327 conditions per place. [2024-06-04 15:04:22,822 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 38 selfloop transitions, 10 changer transitions 0/50 dead transitions. [2024-06-04 15:04:22,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 50 transitions, 323 flow [2024-06-04 15:04:22,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:04:22,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:04:22,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-04 15:04:22,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36160714285714285 [2024-06-04 15:04:22,823 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 197 flow. Second operand 7 states and 81 transitions. [2024-06-04 15:04:22,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 50 transitions, 323 flow [2024-06-04 15:04:22,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 50 transitions, 299 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-04 15:04:22,827 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 212 flow [2024-06-04 15:04:22,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=212, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2024-06-04 15:04:22,828 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 22 predicate places. [2024-06-04 15:04:22,828 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 212 flow [2024-06-04 15:04:22,829 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) [2024-06-04 15:04:22,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:22,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:22,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-04 15:04:22,829 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)] === [2024-06-04 15:04:22,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:22,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1050225587, now seen corresponding path program 1 times [2024-06-04 15:04:22,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:22,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274740555] [2024-06-04 15:04:22,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:22,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:23,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:23,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:23,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274740555] [2024-06-04 15:04:23,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274740555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:23,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:23,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:04:23,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527350611] [2024-06-04 15:04:23,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:23,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:04:23,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:23,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:04:23,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:04:23,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:04:23,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 212 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:04:23,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:23,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:04:23,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:23,651 INFO L124 PetriNetUnfolderBase]: 183/342 cut-off events. [2024-06-04 15:04:23,652 INFO L125 PetriNetUnfolderBase]: For 1715/1715 co-relation queries the response was YES. [2024-06-04 15:04:23,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1292 conditions, 342 events. 183/342 cut-off events. For 1715/1715 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1187 event pairs, 48 based on Foata normal form. 1/341 useless extension candidates. Maximal degree in co-relation 1266. Up to 295 conditions per place. [2024-06-04 15:04:23,654 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 42 selfloop transitions, 10 changer transitions 0/56 dead transitions. [2024-06-04 15:04:23,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 56 transitions, 358 flow [2024-06-04 15:04:23,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:04:23,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:04:23,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-06-04 15:04:23,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 15:04:23,655 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 212 flow. Second operand 7 states and 91 transitions. [2024-06-04 15:04:23,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 56 transitions, 358 flow [2024-06-04 15:04:23,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 56 transitions, 335 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-04 15:04:23,657 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 228 flow [2024-06-04 15:04:23,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=228, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2024-06-04 15:04:23,658 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2024-06-04 15:04:23,658 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 228 flow [2024-06-04 15:04:23,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:04:23,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:23,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:23,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-04 15:04:23,659 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)] === [2024-06-04 15:04:23,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:23,659 INFO L85 PathProgramCache]: Analyzing trace with hash -882971063, now seen corresponding path program 2 times [2024-06-04 15:04:23,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:23,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749883036] [2024-06-04 15:04:23,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:23,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:23,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:24,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:24,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:24,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749883036] [2024-06-04 15:04:24,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749883036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:24,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:24,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:04:24,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501240636] [2024-06-04 15:04:24,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:24,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:04:24,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:24,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:04:24,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:04:24,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:04:24,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 228 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:04:24,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:24,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:04:24,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:24,422 INFO L124 PetriNetUnfolderBase]: 186/347 cut-off events. [2024-06-04 15:04:24,422 INFO L125 PetriNetUnfolderBase]: For 2040/2040 co-relation queries the response was YES. [2024-06-04 15:04:24,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1370 conditions, 347 events. 186/347 cut-off events. For 2040/2040 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1208 event pairs, 49 based on Foata normal form. 1/346 useless extension candidates. Maximal degree in co-relation 1343. Up to 284 conditions per place. [2024-06-04 15:04:24,424 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 37 selfloop transitions, 17 changer transitions 0/58 dead transitions. [2024-06-04 15:04:24,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 58 transitions, 410 flow [2024-06-04 15:04:24,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:04:24,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:04:24,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 93 transitions. [2024-06-04 15:04:24,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41517857142857145 [2024-06-04 15:04:24,425 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 228 flow. Second operand 7 states and 93 transitions. [2024-06-04 15:04:24,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 58 transitions, 410 flow [2024-06-04 15:04:24,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 58 transitions, 387 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-04 15:04:24,428 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 276 flow [2024-06-04 15:04:24,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=276, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2024-06-04 15:04:24,429 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 26 predicate places. [2024-06-04 15:04:24,429 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 276 flow [2024-06-04 15:04:24,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:04:24,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:24,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:24,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-04 15:04:24,429 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)] === [2024-06-04 15:04:24,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:24,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1050105431, now seen corresponding path program 1 times [2024-06-04 15:04:24,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:24,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95862772] [2024-06-04 15:04:24,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:24,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:24,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:25,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:25,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:25,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95862772] [2024-06-04 15:04:25,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95862772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:25,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:25,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:04:25,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106888783] [2024-06-04 15:04:25,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:25,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:04:25,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:25,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:04:25,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:04:25,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:04:25,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 276 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) [2024-06-04 15:04:25,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:25,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:04:25,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:25,195 INFO L124 PetriNetUnfolderBase]: 203/366 cut-off events. [2024-06-04 15:04:25,195 INFO L125 PetriNetUnfolderBase]: For 2479/2479 co-relation queries the response was YES. [2024-06-04 15:04:25,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1514 conditions, 366 events. 203/366 cut-off events. For 2479/2479 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1243 event pairs, 51 based on Foata normal form. 1/365 useless extension candidates. Maximal degree in co-relation 1486. Up to 327 conditions per place. [2024-06-04 15:04:25,197 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 45 selfloop transitions, 15 changer transitions 0/62 dead transitions. [2024-06-04 15:04:25,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 62 transitions, 460 flow [2024-06-04 15:04:25,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:04:25,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:04:25,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-06-04 15:04:25,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38839285714285715 [2024-06-04 15:04:25,199 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 276 flow. Second operand 7 states and 87 transitions. [2024-06-04 15:04:25,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 62 transitions, 460 flow [2024-06-04 15:04:25,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 62 transitions, 438 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-04 15:04:25,202 INFO L231 Difference]: Finished difference. Result has 61 places, 51 transitions, 309 flow [2024-06-04 15:04:25,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=309, PETRI_PLACES=61, PETRI_TRANSITIONS=51} [2024-06-04 15:04:25,203 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 30 predicate places. [2024-06-04 15:04:25,203 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 51 transitions, 309 flow [2024-06-04 15:04:25,203 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) [2024-06-04 15:04:25,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:25,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:25,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-04 15:04:25,204 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)] === [2024-06-04 15:04:25,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:25,204 INFO L85 PathProgramCache]: Analyzing trace with hash -17667257, now seen corresponding path program 2 times [2024-06-04 15:04:25,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:25,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261101280] [2024-06-04 15:04:25,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:25,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:25,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:25,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:25,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261101280] [2024-06-04 15:04:25,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261101280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:25,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:25,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:04:25,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909498698] [2024-06-04 15:04:25,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:25,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:04:25,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:25,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:04:25,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:04:25,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:04:25,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 51 transitions, 309 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) [2024-06-04 15:04:25,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:25,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:04:25,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:26,014 INFO L124 PetriNetUnfolderBase]: 206/371 cut-off events. [2024-06-04 15:04:26,014 INFO L125 PetriNetUnfolderBase]: For 2919/2919 co-relation queries the response was YES. [2024-06-04 15:04:26,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1621 conditions, 371 events. 206/371 cut-off events. For 2919/2919 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1258 event pairs, 49 based on Foata normal form. 1/370 useless extension candidates. Maximal degree in co-relation 1591. Up to 346 conditions per place. [2024-06-04 15:04:26,017 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 46 selfloop transitions, 13 changer transitions 0/61 dead transitions. [2024-06-04 15:04:26,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 61 transitions, 481 flow [2024-06-04 15:04:26,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:04:26,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:04:26,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-06-04 15:04:26,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36607142857142855 [2024-06-04 15:04:26,018 INFO L175 Difference]: Start difference. First operand has 61 places, 51 transitions, 309 flow. Second operand 7 states and 82 transitions. [2024-06-04 15:04:26,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 61 transitions, 481 flow [2024-06-04 15:04:26,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 61 transitions, 467 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-04 15:04:26,024 INFO L231 Difference]: Finished difference. Result has 65 places, 53 transitions, 338 flow [2024-06-04 15:04:26,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=338, PETRI_PLACES=65, PETRI_TRANSITIONS=53} [2024-06-04 15:04:26,025 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 34 predicate places. [2024-06-04 15:04:26,025 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 53 transitions, 338 flow [2024-06-04 15:04:26,025 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) [2024-06-04 15:04:26,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:26,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:26,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-04 15:04:26,025 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)] === [2024-06-04 15:04:26,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:26,026 INFO L85 PathProgramCache]: Analyzing trace with hash 706622419, now seen corresponding path program 3 times [2024-06-04 15:04:26,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:26,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580439998] [2024-06-04 15:04:26,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:26,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:26,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:26,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:26,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:26,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580439998] [2024-06-04 15:04:26,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580439998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:26,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:26,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:04:26,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971457553] [2024-06-04 15:04:26,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:26,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:04:26,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:26,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:04:26,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:04:26,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:04:26,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 53 transitions, 338 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:04:26,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:26,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:04:26,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:26,877 INFO L124 PetriNetUnfolderBase]: 192/356 cut-off events. [2024-06-04 15:04:26,877 INFO L125 PetriNetUnfolderBase]: For 3371/3371 co-relation queries the response was YES. [2024-06-04 15:04:26,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1605 conditions, 356 events. 192/356 cut-off events. For 3371/3371 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1231 event pairs, 47 based on Foata normal form. 1/355 useless extension candidates. Maximal degree in co-relation 1573. Up to 317 conditions per place. [2024-06-04 15:04:26,880 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 43 selfloop transitions, 10 changer transitions 0/60 dead transitions. [2024-06-04 15:04:26,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 60 transitions, 460 flow [2024-06-04 15:04:26,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:04:26,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:04:26,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-04 15:04:26,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3794642857142857 [2024-06-04 15:04:26,882 INFO L175 Difference]: Start difference. First operand has 65 places, 53 transitions, 338 flow. Second operand 7 states and 85 transitions. [2024-06-04 15:04:26,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 60 transitions, 460 flow [2024-06-04 15:04:26,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 60 transitions, 423 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-04 15:04:26,886 INFO L231 Difference]: Finished difference. Result has 67 places, 53 transitions, 326 flow [2024-06-04 15:04:26,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=326, PETRI_PLACES=67, PETRI_TRANSITIONS=53} [2024-06-04 15:04:26,887 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 36 predicate places. [2024-06-04 15:04:26,887 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 53 transitions, 326 flow [2024-06-04 15:04:26,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:04:26,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:26,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:26,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-04 15:04:26,888 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)] === [2024-06-04 15:04:26,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:26,888 INFO L85 PathProgramCache]: Analyzing trace with hash 706629115, now seen corresponding path program 3 times [2024-06-04 15:04:26,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:26,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479743958] [2024-06-04 15:04:26,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:26,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:26,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:27,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:27,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:27,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479743958] [2024-06-04 15:04:27,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479743958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:27,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:27,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:04:27,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838139839] [2024-06-04 15:04:27,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:27,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:04:27,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:27,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:04:27,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:04:27,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:04:27,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 53 transitions, 326 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) [2024-06-04 15:04:27,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:27,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:04:27,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:27,704 INFO L124 PetriNetUnfolderBase]: 202/365 cut-off events. [2024-06-04 15:04:27,704 INFO L125 PetriNetUnfolderBase]: For 3673/3673 co-relation queries the response was YES. [2024-06-04 15:04:27,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1653 conditions, 365 events. 202/365 cut-off events. For 3673/3673 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1238 event pairs, 49 based on Foata normal form. 1/364 useless extension candidates. Maximal degree in co-relation 1620. Up to 347 conditions per place. [2024-06-04 15:04:27,706 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 48 selfloop transitions, 10 changer transitions 0/60 dead transitions. [2024-06-04 15:04:27,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 60 transitions, 458 flow [2024-06-04 15:04:27,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:04:27,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:04:27,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-04 15:04:27,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35267857142857145 [2024-06-04 15:04:27,707 INFO L175 Difference]: Start difference. First operand has 67 places, 53 transitions, 326 flow. Second operand 7 states and 79 transitions. [2024-06-04 15:04:27,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 60 transitions, 458 flow [2024-06-04 15:04:27,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 60 transitions, 427 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-04 15:04:27,710 INFO L231 Difference]: Finished difference. Result has 68 places, 53 transitions, 320 flow [2024-06-04 15:04:27,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=320, PETRI_PLACES=68, PETRI_TRANSITIONS=53} [2024-06-04 15:04:27,712 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 37 predicate places. [2024-06-04 15:04:27,712 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 53 transitions, 320 flow [2024-06-04 15:04:27,712 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) [2024-06-04 15:04:27,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:27,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:27,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-04 15:04:27,713 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)] === [2024-06-04 15:04:27,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:27,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1802655646, now seen corresponding path program 1 times [2024-06-04 15:04:27,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:27,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910955228] [2024-06-04 15:04:27,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:27,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:27,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:28,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:28,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:28,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910955228] [2024-06-04 15:04:28,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910955228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:28,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:28,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:04:28,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053781373] [2024-06-04 15:04:28,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:28,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:04:28,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:28,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:04:28,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:04:28,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:04:28,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 53 transitions, 320 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:04:28,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:28,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:04:28,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:28,844 INFO L124 PetriNetUnfolderBase]: 198/366 cut-off events. [2024-06-04 15:04:28,845 INFO L125 PetriNetUnfolderBase]: For 4358/4358 co-relation queries the response was YES. [2024-06-04 15:04:28,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1695 conditions, 366 events. 198/366 cut-off events. For 4358/4358 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1277 event pairs, 46 based on Foata normal form. 1/365 useless extension candidates. Maximal degree in co-relation 1661. Up to 300 conditions per place. [2024-06-04 15:04:28,847 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 53 selfloop transitions, 16 changer transitions 0/76 dead transitions. [2024-06-04 15:04:28,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 76 transitions, 562 flow [2024-06-04 15:04:28,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:04:28,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:04:28,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-04 15:04:28,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-04 15:04:28,848 INFO L175 Difference]: Start difference. First operand has 68 places, 53 transitions, 320 flow. Second operand 9 states and 116 transitions. [2024-06-04 15:04:28,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 76 transitions, 562 flow [2024-06-04 15:04:28,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 76 transitions, 537 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-04 15:04:28,853 INFO L231 Difference]: Finished difference. Result has 71 places, 57 transitions, 364 flow [2024-06-04 15:04:28,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=364, PETRI_PLACES=71, PETRI_TRANSITIONS=57} [2024-06-04 15:04:28,853 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 40 predicate places. [2024-06-04 15:04:28,853 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 57 transitions, 364 flow [2024-06-04 15:04:28,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:04:28,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:28,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:28,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-04 15:04:28,854 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)] === [2024-06-04 15:04:28,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:28,854 INFO L85 PathProgramCache]: Analyzing trace with hash 282849749, now seen corresponding path program 1 times [2024-06-04 15:04:28,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:28,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800492102] [2024-06-04 15:04:28,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:28,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:28,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:29,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:29,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:29,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800492102] [2024-06-04 15:04:29,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800492102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:29,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:29,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:04:29,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815469212] [2024-06-04 15:04:29,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:29,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:04:29,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:29,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:04:29,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:04:29,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:04:29,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 57 transitions, 364 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) [2024-06-04 15:04:29,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:29,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:04:29,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:29,769 INFO L124 PetriNetUnfolderBase]: 213/383 cut-off events. [2024-06-04 15:04:29,770 INFO L125 PetriNetUnfolderBase]: For 4908/4908 co-relation queries the response was YES. [2024-06-04 15:04:29,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1856 conditions, 383 events. 213/383 cut-off events. For 4908/4908 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1314 event pairs, 47 based on Foata normal form. 1/382 useless extension candidates. Maximal degree in co-relation 1821. Up to 350 conditions per place. [2024-06-04 15:04:29,772 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 59 selfloop transitions, 12 changer transitions 0/73 dead transitions. [2024-06-04 15:04:29,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 73 transitions, 554 flow [2024-06-04 15:04:29,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:04:29,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:04:29,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-04 15:04:29,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-04 15:04:29,775 INFO L175 Difference]: Start difference. First operand has 71 places, 57 transitions, 364 flow. Second operand 8 states and 94 transitions. [2024-06-04 15:04:29,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 73 transitions, 554 flow [2024-06-04 15:04:29,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 73 transitions, 526 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-04 15:04:29,781 INFO L231 Difference]: Finished difference. Result has 74 places, 59 transitions, 383 flow [2024-06-04 15:04:29,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=383, PETRI_PLACES=74, PETRI_TRANSITIONS=59} [2024-06-04 15:04:29,782 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 43 predicate places. [2024-06-04 15:04:29,782 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 59 transitions, 383 flow [2024-06-04 15:04:29,782 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) [2024-06-04 15:04:29,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:29,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:29,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-04 15:04:29,783 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)] === [2024-06-04 15:04:29,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:29,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1806320776, now seen corresponding path program 2 times [2024-06-04 15:04:29,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:29,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433783160] [2024-06-04 15:04:29,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:29,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:30,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:30,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:30,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433783160] [2024-06-04 15:04:30,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433783160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:30,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:30,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:04:30,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226604565] [2024-06-04 15:04:30,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:30,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:04:30,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:30,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:04:30,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:04:30,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:04:30,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 59 transitions, 383 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:04:30,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:30,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:04:30,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:31,008 INFO L124 PetriNetUnfolderBase]: 201/370 cut-off events. [2024-06-04 15:04:31,009 INFO L125 PetriNetUnfolderBase]: For 5455/5455 co-relation queries the response was YES. [2024-06-04 15:04:31,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1854 conditions, 370 events. 201/370 cut-off events. For 5455/5455 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1283 event pairs, 45 based on Foata normal form. 1/369 useless extension candidates. Maximal degree in co-relation 1817. Up to 315 conditions per place. [2024-06-04 15:04:31,011 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 53 selfloop transitions, 12 changer transitions 0/73 dead transitions. [2024-06-04 15:04:31,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 73 transitions, 547 flow [2024-06-04 15:04:31,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:04:31,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:04:31,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-04 15:04:31,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39453125 [2024-06-04 15:04:31,012 INFO L175 Difference]: Start difference. First operand has 74 places, 59 transitions, 383 flow. Second operand 8 states and 101 transitions. [2024-06-04 15:04:31,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 73 transitions, 547 flow [2024-06-04 15:04:31,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 73 transitions, 512 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-04 15:04:31,019 INFO L231 Difference]: Finished difference. Result has 76 places, 59 transitions, 377 flow [2024-06-04 15:04:31,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=377, PETRI_PLACES=76, PETRI_TRANSITIONS=59} [2024-06-04 15:04:31,019 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 45 predicate places. [2024-06-04 15:04:31,020 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 59 transitions, 377 flow [2024-06-04 15:04:31,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:04:31,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:31,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:31,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-04 15:04:31,021 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)] === [2024-06-04 15:04:31,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:31,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1806470661, now seen corresponding path program 2 times [2024-06-04 15:04:31,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:31,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953138712] [2024-06-04 15:04:31,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:31,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:31,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:31,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:31,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:31,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953138712] [2024-06-04 15:04:31,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953138712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:31,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:31,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:04:31,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300261116] [2024-06-04 15:04:31,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:31,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:04:31,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:31,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:04:31,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:04:31,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:04:31,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 59 transitions, 377 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) [2024-06-04 15:04:31,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:31,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:04:31,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:31,847 INFO L124 PetriNetUnfolderBase]: 219/393 cut-off events. [2024-06-04 15:04:31,847 INFO L125 PetriNetUnfolderBase]: For 6180/6180 co-relation queries the response was YES. [2024-06-04 15:04:31,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2006 conditions, 393 events. 219/393 cut-off events. For 6180/6180 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1361 event pairs, 49 based on Foata normal form. 1/392 useless extension candidates. Maximal degree in co-relation 1968. Up to 318 conditions per place. [2024-06-04 15:04:31,849 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 49 selfloop transitions, 27 changer transitions 0/78 dead transitions. [2024-06-04 15:04:31,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 78 transitions, 685 flow [2024-06-04 15:04:31,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:04:31,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:04:31,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-04 15:04:31,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-04 15:04:31,851 INFO L175 Difference]: Start difference. First operand has 76 places, 59 transitions, 377 flow. Second operand 8 states and 100 transitions. [2024-06-04 15:04:31,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 78 transitions, 685 flow [2024-06-04 15:04:31,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 78 transitions, 656 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-04 15:04:31,858 INFO L231 Difference]: Finished difference. Result has 77 places, 65 transitions, 465 flow [2024-06-04 15:04:31,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=465, PETRI_PLACES=77, PETRI_TRANSITIONS=65} [2024-06-04 15:04:31,859 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 46 predicate places. [2024-06-04 15:04:31,859 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 65 transitions, 465 flow [2024-06-04 15:04:31,859 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) [2024-06-04 15:04:31,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:31,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:31,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-04 15:04:31,860 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)] === [2024-06-04 15:04:31,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:31,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1830826996, now seen corresponding path program 1 times [2024-06-04 15:04:31,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:31,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734444864] [2024-06-04 15:04:31,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:31,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:31,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:32,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:32,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:32,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734444864] [2024-06-04 15:04:32,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734444864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:32,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:32,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:04:32,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454712726] [2024-06-04 15:04:32,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:32,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:04:32,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:32,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:04:32,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:04:32,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:04:32,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 65 transitions, 465 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) [2024-06-04 15:04:32,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:32,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:04:32,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:32,666 INFO L124 PetriNetUnfolderBase]: 238/424 cut-off events. [2024-06-04 15:04:32,667 INFO L125 PetriNetUnfolderBase]: For 7728/7728 co-relation queries the response was YES. [2024-06-04 15:04:32,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2223 conditions, 424 events. 238/424 cut-off events. For 7728/7728 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1501 event pairs, 52 based on Foata normal form. 3/425 useless extension candidates. Maximal degree in co-relation 2184. Up to 355 conditions per place. [2024-06-04 15:04:32,669 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 65 selfloop transitions, 20 changer transitions 0/87 dead transitions. [2024-06-04 15:04:32,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 87 transitions, 735 flow [2024-06-04 15:04:32,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:04:32,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:04:32,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-04 15:04:32,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-04 15:04:32,671 INFO L175 Difference]: Start difference. First operand has 77 places, 65 transitions, 465 flow. Second operand 8 states and 102 transitions. [2024-06-04 15:04:32,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 87 transitions, 735 flow [2024-06-04 15:04:32,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 87 transitions, 705 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-04 15:04:32,680 INFO L231 Difference]: Finished difference. Result has 83 places, 71 transitions, 520 flow [2024-06-04 15:04:32,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=520, PETRI_PLACES=83, PETRI_TRANSITIONS=71} [2024-06-04 15:04:32,681 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 52 predicate places. [2024-06-04 15:04:32,681 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 71 transitions, 520 flow [2024-06-04 15:04:32,681 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) [2024-06-04 15:04:32,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:32,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:32,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-04 15:04:32,682 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)] === [2024-06-04 15:04:32,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:32,682 INFO L85 PathProgramCache]: Analyzing trace with hash 286568819, now seen corresponding path program 3 times [2024-06-04 15:04:32,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:32,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659458543] [2024-06-04 15:04:32,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:32,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:32,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:33,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:33,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:33,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659458543] [2024-06-04 15:04:33,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659458543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:33,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:33,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:04:33,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073062478] [2024-06-04 15:04:33,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:33,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:04:33,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:33,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:04:33,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:04:33,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:04:33,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 71 transitions, 520 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) [2024-06-04 15:04:33,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:33,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:04:33,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:33,539 INFO L124 PetriNetUnfolderBase]: 236/421 cut-off events. [2024-06-04 15:04:33,539 INFO L125 PetriNetUnfolderBase]: For 7943/7943 co-relation queries the response was YES. [2024-06-04 15:04:33,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2331 conditions, 421 events. 236/421 cut-off events. For 7943/7943 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1497 event pairs, 51 based on Foata normal form. 1/420 useless extension candidates. Maximal degree in co-relation 2289. Up to 347 conditions per place. [2024-06-04 15:04:33,542 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 55 selfloop transitions, 26 changer transitions 0/83 dead transitions. [2024-06-04 15:04:33,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 83 transitions, 750 flow [2024-06-04 15:04:33,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:04:33,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:04:33,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-04 15:04:33,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-04 15:04:33,543 INFO L175 Difference]: Start difference. First operand has 83 places, 71 transitions, 520 flow. Second operand 8 states and 100 transitions. [2024-06-04 15:04:33,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 83 transitions, 750 flow [2024-06-04 15:04:33,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 83 transitions, 730 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-04 15:04:33,550 INFO L231 Difference]: Finished difference. Result has 88 places, 71 transitions, 557 flow [2024-06-04 15:04:33,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=557, PETRI_PLACES=88, PETRI_TRANSITIONS=71} [2024-06-04 15:04:33,551 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 57 predicate places. [2024-06-04 15:04:33,551 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 71 transitions, 557 flow [2024-06-04 15:04:33,551 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) [2024-06-04 15:04:33,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:33,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:33,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-04 15:04:33,551 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)] === [2024-06-04 15:04:33,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:33,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1806464926, now seen corresponding path program 3 times [2024-06-04 15:04:33,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:33,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116172276] [2024-06-04 15:04:33,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:33,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:34,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:34,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:34,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116172276] [2024-06-04 15:04:34,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116172276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:34,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:34,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:04:34,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703227044] [2024-06-04 15:04:34,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:34,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:04:34,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:34,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:04:34,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:04:34,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:04:34,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 71 transitions, 557 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:04:34,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:34,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:04:34,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:34,609 INFO L124 PetriNetUnfolderBase]: 228/415 cut-off events. [2024-06-04 15:04:34,610 INFO L125 PetriNetUnfolderBase]: For 8917/8917 co-relation queries the response was YES. [2024-06-04 15:04:34,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2378 conditions, 415 events. 228/415 cut-off events. For 8917/8917 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1511 event pairs, 48 based on Foata normal form. 1/414 useless extension candidates. Maximal degree in co-relation 2333. Up to 341 conditions per place. [2024-06-04 15:04:34,614 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 54 selfloop transitions, 19 changer transitions 0/84 dead transitions. [2024-06-04 15:04:34,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 84 transitions, 747 flow [2024-06-04 15:04:34,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:04:34,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:04:34,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-04 15:04:34,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-04 15:04:34,615 INFO L175 Difference]: Start difference. First operand has 88 places, 71 transitions, 557 flow. Second operand 8 states and 102 transitions. [2024-06-04 15:04:34,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 84 transitions, 747 flow [2024-06-04 15:04:34,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 84 transitions, 683 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-04 15:04:34,625 INFO L231 Difference]: Finished difference. Result has 89 places, 73 transitions, 558 flow [2024-06-04 15:04:34,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=558, PETRI_PLACES=89, PETRI_TRANSITIONS=73} [2024-06-04 15:04:34,625 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 58 predicate places. [2024-06-04 15:04:34,625 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 73 transitions, 558 flow [2024-06-04 15:04:34,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:04:34,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:34,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:34,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-04 15:04:34,626 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)] === [2024-06-04 15:04:34,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:34,626 INFO L85 PathProgramCache]: Analyzing trace with hash -547690048, now seen corresponding path program 4 times [2024-06-04 15:04:34,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:34,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777079139] [2024-06-04 15:04:34,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:34,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:34,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:35,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:35,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:35,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777079139] [2024-06-04 15:04:35,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777079139] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:35,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:35,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:04:35,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371224349] [2024-06-04 15:04:35,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:35,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:04:35,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:35,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:04:35,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:04:35,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:04:35,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 73 transitions, 558 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:04:35,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:35,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:04:35,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:35,702 INFO L124 PetriNetUnfolderBase]: 226/412 cut-off events. [2024-06-04 15:04:35,702 INFO L125 PetriNetUnfolderBase]: For 9452/9452 co-relation queries the response was YES. [2024-06-04 15:04:35,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2384 conditions, 412 events. 226/412 cut-off events. For 9452/9452 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1496 event pairs, 47 based on Foata normal form. 1/411 useless extension candidates. Maximal degree in co-relation 2338. Up to 365 conditions per place. [2024-06-04 15:04:35,705 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 60 selfloop transitions, 12 changer transitions 0/83 dead transitions. [2024-06-04 15:04:35,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 83 transitions, 742 flow [2024-06-04 15:04:35,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:04:35,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:04:35,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-04 15:04:35,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37109375 [2024-06-04 15:04:35,707 INFO L175 Difference]: Start difference. First operand has 89 places, 73 transitions, 558 flow. Second operand 8 states and 95 transitions. [2024-06-04 15:04:35,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 83 transitions, 742 flow [2024-06-04 15:04:35,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 83 transitions, 693 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-04 15:04:35,719 INFO L231 Difference]: Finished difference. Result has 91 places, 75 transitions, 564 flow [2024-06-04 15:04:35,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=564, PETRI_PLACES=91, PETRI_TRANSITIONS=75} [2024-06-04 15:04:35,720 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 60 predicate places. [2024-06-04 15:04:35,720 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 75 transitions, 564 flow [2024-06-04 15:04:35,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:04:35,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:35,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:35,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-04 15:04:35,720 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)] === [2024-06-04 15:04:35,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:35,721 INFO L85 PathProgramCache]: Analyzing trace with hash 430465146, now seen corresponding path program 2 times [2024-06-04 15:04:35,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:35,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954363058] [2024-06-04 15:04:35,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:35,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:35,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:36,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:36,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:36,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954363058] [2024-06-04 15:04:36,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954363058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:36,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:36,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:04:36,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186407432] [2024-06-04 15:04:36,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:36,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:04:36,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:36,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:04:36,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:04:36,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:04:36,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 75 transitions, 564 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) [2024-06-04 15:04:36,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:36,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:04:36,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:36,615 INFO L124 PetriNetUnfolderBase]: 246/438 cut-off events. [2024-06-04 15:04:36,615 INFO L125 PetriNetUnfolderBase]: For 10701/10701 co-relation queries the response was YES. [2024-06-04 15:04:36,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2527 conditions, 438 events. 246/438 cut-off events. For 10701/10701 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1571 event pairs, 49 based on Foata normal form. 3/439 useless extension candidates. Maximal degree in co-relation 2480. Up to 386 conditions per place. [2024-06-04 15:04:36,619 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 71 selfloop transitions, 17 changer transitions 0/90 dead transitions. [2024-06-04 15:04:36,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 90 transitions, 832 flow [2024-06-04 15:04:36,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:04:36,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:04:36,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-04 15:04:36,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37890625 [2024-06-04 15:04:36,623 INFO L175 Difference]: Start difference. First operand has 91 places, 75 transitions, 564 flow. Second operand 8 states and 97 transitions. [2024-06-04 15:04:36,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 90 transitions, 832 flow [2024-06-04 15:04:36,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 90 transitions, 793 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-04 15:04:36,633 INFO L231 Difference]: Finished difference. Result has 93 places, 77 transitions, 578 flow [2024-06-04 15:04:36,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=578, PETRI_PLACES=93, PETRI_TRANSITIONS=77} [2024-06-04 15:04:36,634 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2024-06-04 15:04:36,634 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 77 transitions, 578 flow [2024-06-04 15:04:36,634 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) [2024-06-04 15:04:36,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:36,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:36,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-04 15:04:36,634 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)] === [2024-06-04 15:04:36,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:36,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1292392391, now seen corresponding path program 4 times [2024-06-04 15:04:36,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:36,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129459390] [2024-06-04 15:04:36,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:36,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:36,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:37,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:37,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:37,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129459390] [2024-06-04 15:04:37,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129459390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:37,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:37,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:04:37,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914848492] [2024-06-04 15:04:37,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:37,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:04:37,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:37,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:04:37,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:04:37,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:04:37,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 77 transitions, 578 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) [2024-06-04 15:04:37,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:37,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:04:37,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:37,430 INFO L124 PetriNetUnfolderBase]: 249/443 cut-off events. [2024-06-04 15:04:37,430 INFO L125 PetriNetUnfolderBase]: For 11059/11059 co-relation queries the response was YES. [2024-06-04 15:04:37,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2605 conditions, 443 events. 249/443 cut-off events. For 11059/11059 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1592 event pairs, 49 based on Foata normal form. 1/442 useless extension candidates. Maximal degree in co-relation 2557. Up to 407 conditions per place. [2024-06-04 15:04:37,433 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 68 selfloop transitions, 18 changer transitions 0/88 dead transitions. [2024-06-04 15:04:37,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 88 transitions, 840 flow [2024-06-04 15:04:37,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:04:37,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:04:37,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-04 15:04:37,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-04 15:04:37,442 INFO L175 Difference]: Start difference. First operand has 93 places, 77 transitions, 578 flow. Second operand 8 states and 92 transitions. [2024-06-04 15:04:37,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 88 transitions, 840 flow [2024-06-04 15:04:37,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 88 transitions, 797 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-04 15:04:37,453 INFO L231 Difference]: Finished difference. Result has 95 places, 79 transitions, 598 flow [2024-06-04 15:04:37,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=535, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=598, PETRI_PLACES=95, PETRI_TRANSITIONS=79} [2024-06-04 15:04:37,453 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 64 predicate places. [2024-06-04 15:04:37,453 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 79 transitions, 598 flow [2024-06-04 15:04:37,453 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) [2024-06-04 15:04:37,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:37,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:37,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-04 15:04:37,454 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)] === [2024-06-04 15:04:37,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:37,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1292386811, now seen corresponding path program 5 times [2024-06-04 15:04:37,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:37,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971405527] [2024-06-04 15:04:37,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:37,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:37,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:37,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:37,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971405527] [2024-06-04 15:04:37,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971405527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:37,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:37,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:04:37,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703221472] [2024-06-04 15:04:37,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:37,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:04:37,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:37,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:04:37,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:04:38,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:04:38,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 79 transitions, 598 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) [2024-06-04 15:04:38,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:38,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:04:38,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:38,204 INFO L124 PetriNetUnfolderBase]: 252/448 cut-off events. [2024-06-04 15:04:38,205 INFO L125 PetriNetUnfolderBase]: For 11859/11859 co-relation queries the response was YES. [2024-06-04 15:04:38,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2653 conditions, 448 events. 252/448 cut-off events. For 11859/11859 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1611 event pairs, 49 based on Foata normal form. 1/447 useless extension candidates. Maximal degree in co-relation 2605. Up to 411 conditions per place. [2024-06-04 15:04:38,209 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 69 selfloop transitions, 19 changer transitions 0/90 dead transitions. [2024-06-04 15:04:38,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 90 transitions, 870 flow [2024-06-04 15:04:38,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:04:38,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:04:38,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-04 15:04:38,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36328125 [2024-06-04 15:04:38,210 INFO L175 Difference]: Start difference. First operand has 95 places, 79 transitions, 598 flow. Second operand 8 states and 93 transitions. [2024-06-04 15:04:38,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 90 transitions, 870 flow [2024-06-04 15:04:38,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 90 transitions, 809 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-04 15:04:38,222 INFO L231 Difference]: Finished difference. Result has 97 places, 81 transitions, 606 flow [2024-06-04 15:04:38,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=606, PETRI_PLACES=97, PETRI_TRANSITIONS=81} [2024-06-04 15:04:38,223 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 66 predicate places. [2024-06-04 15:04:38,224 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 81 transitions, 606 flow [2024-06-04 15:04:38,224 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) [2024-06-04 15:04:38,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:38,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:38,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-04 15:04:38,224 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)] === [2024-06-04 15:04:38,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:38,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1285035161, now seen corresponding path program 6 times [2024-06-04 15:04:38,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:38,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675735011] [2024-06-04 15:04:38,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:38,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:38,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:38,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:38,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:38,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675735011] [2024-06-04 15:04:38,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675735011] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:38,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:38,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:04:38,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368498534] [2024-06-04 15:04:38,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:38,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:04:38,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:38,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:04:38,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:04:38,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:04:38,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 81 transitions, 606 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) [2024-06-04 15:04:38,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:38,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:04:38,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:38,874 INFO L124 PetriNetUnfolderBase]: 250/445 cut-off events. [2024-06-04 15:04:38,874 INFO L125 PetriNetUnfolderBase]: For 12369/12369 co-relation queries the response was YES. [2024-06-04 15:04:38,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2629 conditions, 445 events. 250/445 cut-off events. For 12369/12369 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1595 event pairs, 49 based on Foata normal form. 1/444 useless extension candidates. Maximal degree in co-relation 2580. Up to 424 conditions per place. [2024-06-04 15:04:38,877 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 75 selfloop transitions, 12 changer transitions 0/89 dead transitions. [2024-06-04 15:04:38,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 89 transitions, 798 flow [2024-06-04 15:04:38,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:04:38,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:04:38,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-04 15:04:38,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 15:04:38,887 INFO L175 Difference]: Start difference. First operand has 97 places, 81 transitions, 606 flow. Second operand 8 states and 88 transitions. [2024-06-04 15:04:38,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 89 transitions, 798 flow [2024-06-04 15:04:38,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 89 transitions, 749 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-04 15:04:38,900 INFO L231 Difference]: Finished difference. Result has 100 places, 81 transitions, 586 flow [2024-06-04 15:04:38,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=586, PETRI_PLACES=100, PETRI_TRANSITIONS=81} [2024-06-04 15:04:38,901 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 69 predicate places. [2024-06-04 15:04:38,901 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 81 transitions, 586 flow [2024-06-04 15:04:38,901 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) [2024-06-04 15:04:38,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:38,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:38,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-04 15:04:38,902 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)] === [2024-06-04 15:04:38,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:38,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1395372190, now seen corresponding path program 3 times [2024-06-04 15:04:38,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:38,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022714937] [2024-06-04 15:04:38,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:38,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:38,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:39,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:39,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:39,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022714937] [2024-06-04 15:04:39,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022714937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:39,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:39,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:04:39,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030792940] [2024-06-04 15:04:39,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:39,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:04:39,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:39,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:04:39,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:04:39,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:04:39,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 81 transitions, 586 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) [2024-06-04 15:04:39,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:39,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:04:39,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:39,666 INFO L124 PetriNetUnfolderBase]: 259/460 cut-off events. [2024-06-04 15:04:39,667 INFO L125 PetriNetUnfolderBase]: For 14021/14021 co-relation queries the response was YES. [2024-06-04 15:04:39,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2692 conditions, 460 events. 259/460 cut-off events. For 14021/14021 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1685 event pairs, 49 based on Foata normal form. 3/461 useless extension candidates. Maximal degree in co-relation 2642. Up to 433 conditions per place. [2024-06-04 15:04:39,670 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 79 selfloop transitions, 12 changer transitions 0/93 dead transitions. [2024-06-04 15:04:39,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 93 transitions, 806 flow [2024-06-04 15:04:39,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:04:39,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:04:39,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-04 15:04:39,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-04 15:04:39,671 INFO L175 Difference]: Start difference. First operand has 100 places, 81 transitions, 586 flow. Second operand 8 states and 90 transitions. [2024-06-04 15:04:39,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 93 transitions, 806 flow [2024-06-04 15:04:39,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 93 transitions, 766 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-04 15:04:39,684 INFO L231 Difference]: Finished difference. Result has 100 places, 83 transitions, 593 flow [2024-06-04 15:04:39,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=593, PETRI_PLACES=100, PETRI_TRANSITIONS=83} [2024-06-04 15:04:39,684 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 69 predicate places. [2024-06-04 15:04:39,684 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 83 transitions, 593 flow [2024-06-04 15:04:39,685 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) [2024-06-04 15:04:39,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:39,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:39,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-04 15:04:39,685 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)] === [2024-06-04 15:04:39,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:39,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1285034944, now seen corresponding path program 4 times [2024-06-04 15:04:39,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:39,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340831217] [2024-06-04 15:04:39,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:39,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:39,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:40,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:40,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:40,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340831217] [2024-06-04 15:04:40,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340831217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:40,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:40,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:04:40,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5647388] [2024-06-04 15:04:40,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:40,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:04:40,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:40,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:04:40,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:04:40,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:04:40,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 83 transitions, 593 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) [2024-06-04 15:04:40,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:40,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:04:40,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:40,501 INFO L124 PetriNetUnfolderBase]: 253/451 cut-off events. [2024-06-04 15:04:40,502 INFO L125 PetriNetUnfolderBase]: For 13850/13850 co-relation queries the response was YES. [2024-06-04 15:04:40,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2623 conditions, 451 events. 253/451 cut-off events. For 13850/13850 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1645 event pairs, 47 based on Foata normal form. 3/452 useless extension candidates. Maximal degree in co-relation 2572. Up to 412 conditions per place. [2024-06-04 15:04:40,505 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 78 selfloop transitions, 15 changer transitions 0/95 dead transitions. [2024-06-04 15:04:40,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 95 transitions, 809 flow [2024-06-04 15:04:40,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:04:40,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:04:40,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-04 15:04:40,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-04 15:04:40,506 INFO L175 Difference]: Start difference. First operand has 100 places, 83 transitions, 593 flow. Second operand 8 states and 94 transitions. [2024-06-04 15:04:40,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 95 transitions, 809 flow [2024-06-04 15:04:40,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 95 transitions, 778 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-04 15:04:40,519 INFO L231 Difference]: Finished difference. Result has 102 places, 83 transitions, 597 flow [2024-06-04 15:04:40,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=597, PETRI_PLACES=102, PETRI_TRANSITIONS=83} [2024-06-04 15:04:40,520 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 71 predicate places. [2024-06-04 15:04:40,520 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 83 transitions, 597 flow [2024-06-04 15:04:40,520 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) [2024-06-04 15:04:40,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:40,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:40,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-04 15:04:40,521 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)] === [2024-06-04 15:04:40,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:40,521 INFO L85 PathProgramCache]: Analyzing trace with hash 289107948, now seen corresponding path program 1 times [2024-06-04 15:04:40,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:40,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332371092] [2024-06-04 15:04:40,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:40,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:40,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:41,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:41,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:41,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332371092] [2024-06-04 15:04:41,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332371092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:41,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:41,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:04:41,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097536527] [2024-06-04 15:04:41,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:41,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:04:41,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:41,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:04:41,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:04:41,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:04:41,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 83 transitions, 597 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:04:41,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:41,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:04:41,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:41,728 INFO L124 PetriNetUnfolderBase]: 252/460 cut-off events. [2024-06-04 15:04:41,729 INFO L125 PetriNetUnfolderBase]: For 15559/15559 co-relation queries the response was YES. [2024-06-04 15:04:41,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2768 conditions, 460 events. 252/460 cut-off events. For 15559/15559 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1751 event pairs, 26 based on Foata normal form. 2/460 useless extension candidates. Maximal degree in co-relation 2716. Up to 349 conditions per place. [2024-06-04 15:04:41,736 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 76 selfloop transitions, 18 changer transitions 0/107 dead transitions. [2024-06-04 15:04:41,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 107 transitions, 927 flow [2024-06-04 15:04:41,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:04:41,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:04:41,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-04 15:04:41,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-04 15:04:41,737 INFO L175 Difference]: Start difference. First operand has 102 places, 83 transitions, 597 flow. Second operand 10 states and 126 transitions. [2024-06-04 15:04:41,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 107 transitions, 927 flow [2024-06-04 15:04:41,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 107 transitions, 882 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-04 15:04:41,753 INFO L231 Difference]: Finished difference. Result has 105 places, 85 transitions, 626 flow [2024-06-04 15:04:41,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=626, PETRI_PLACES=105, PETRI_TRANSITIONS=85} [2024-06-04 15:04:41,754 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 74 predicate places. [2024-06-04 15:04:41,754 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 85 transitions, 626 flow [2024-06-04 15:04:41,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:04:41,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:41,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:41,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-04 15:04:41,754 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)] === [2024-06-04 15:04:41,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:41,755 INFO L85 PathProgramCache]: Analyzing trace with hash 47750894, now seen corresponding path program 2 times [2024-06-04 15:04:41,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:41,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581669826] [2024-06-04 15:04:41,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:41,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:41,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:42,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:42,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:42,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581669826] [2024-06-04 15:04:42,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581669826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:42,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:42,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:04:42,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559360659] [2024-06-04 15:04:42,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:42,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:04:42,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:42,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:04:42,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:04:42,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:04:42,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 85 transitions, 626 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:04:42,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:42,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:04:42,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:42,794 INFO L124 PetriNetUnfolderBase]: 256/468 cut-off events. [2024-06-04 15:04:42,794 INFO L125 PetriNetUnfolderBase]: For 16640/16640 co-relation queries the response was YES. [2024-06-04 15:04:42,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2851 conditions, 468 events. 256/468 cut-off events. For 16640/16640 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1808 event pairs, 44 based on Foata normal form. 2/468 useless extension candidates. Maximal degree in co-relation 2798. Up to 388 conditions per place. [2024-06-04 15:04:42,797 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 76 selfloop transitions, 17 changer transitions 0/106 dead transitions. [2024-06-04 15:04:42,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 106 transitions, 878 flow [2024-06-04 15:04:42,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:04:42,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:04:42,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-04 15:04:42,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-04 15:04:42,798 INFO L175 Difference]: Start difference. First operand has 105 places, 85 transitions, 626 flow. Second operand 10 states and 125 transitions. [2024-06-04 15:04:42,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 106 transitions, 878 flow [2024-06-04 15:04:42,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 106 transitions, 831 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-04 15:04:42,814 INFO L231 Difference]: Finished difference. Result has 109 places, 86 transitions, 637 flow [2024-06-04 15:04:42,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=637, PETRI_PLACES=109, PETRI_TRANSITIONS=86} [2024-06-04 15:04:42,814 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 78 predicate places. [2024-06-04 15:04:42,814 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 86 transitions, 637 flow [2024-06-04 15:04:42,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:04:42,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:42,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:42,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-04 15:04:42,815 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)] === [2024-06-04 15:04:42,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:42,815 INFO L85 PathProgramCache]: Analyzing trace with hash 47751018, now seen corresponding path program 1 times [2024-06-04 15:04:42,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:42,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22245400] [2024-06-04 15:04:42,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:42,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:42,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:43,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:43,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:43,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22245400] [2024-06-04 15:04:43,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22245400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:43,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:43,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:04:43,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482407327] [2024-06-04 15:04:43,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:43,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:04:43,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:43,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:04:43,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:04:43,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:04:43,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 86 transitions, 637 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) [2024-06-04 15:04:43,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:43,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:04:43,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:43,916 INFO L124 PetriNetUnfolderBase]: 276/493 cut-off events. [2024-06-04 15:04:43,916 INFO L125 PetriNetUnfolderBase]: For 17615/17615 co-relation queries the response was YES. [2024-06-04 15:04:43,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3021 conditions, 493 events. 276/493 cut-off events. For 17615/17615 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1879 event pairs, 45 based on Foata normal form. 1/492 useless extension candidates. Maximal degree in co-relation 2966. Up to 436 conditions per place. [2024-06-04 15:04:43,919 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 88 selfloop transitions, 20 changer transitions 0/110 dead transitions. [2024-06-04 15:04:43,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 110 transitions, 1003 flow [2024-06-04 15:04:43,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:04:43,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:04:43,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-04 15:04:43,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-04 15:04:43,920 INFO L175 Difference]: Start difference. First operand has 109 places, 86 transitions, 637 flow. Second operand 10 states and 119 transitions. [2024-06-04 15:04:43,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 110 transitions, 1003 flow [2024-06-04 15:04:43,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 110 transitions, 963 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-04 15:04:43,941 INFO L231 Difference]: Finished difference. Result has 111 places, 90 transitions, 686 flow [2024-06-04 15:04:43,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=686, PETRI_PLACES=111, PETRI_TRANSITIONS=90} [2024-06-04 15:04:43,942 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 80 predicate places. [2024-06-04 15:04:43,942 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 90 transitions, 686 flow [2024-06-04 15:04:43,942 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) [2024-06-04 15:04:43,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:43,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:43,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-04 15:04:43,943 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)] === [2024-06-04 15:04:43,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:43,943 INFO L85 PathProgramCache]: Analyzing trace with hash 50552364, now seen corresponding path program 1 times [2024-06-04 15:04:43,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:43,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878006473] [2024-06-04 15:04:43,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:43,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:43,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:44,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:44,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:44,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878006473] [2024-06-04 15:04:44,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878006473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:44,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:44,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:04:44,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097864012] [2024-06-04 15:04:44,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:44,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:04:44,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:44,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:04:44,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:04:44,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:04:44,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 90 transitions, 686 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) [2024-06-04 15:04:44,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:44,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:04:44,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:44,826 INFO L124 PetriNetUnfolderBase]: 285/508 cut-off events. [2024-06-04 15:04:44,827 INFO L125 PetriNetUnfolderBase]: For 19848/19848 co-relation queries the response was YES. [2024-06-04 15:04:44,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3145 conditions, 508 events. 285/508 cut-off events. For 19848/19848 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1963 event pairs, 44 based on Foata normal form. 3/509 useless extension candidates. Maximal degree in co-relation 3089. Up to 466 conditions per place. [2024-06-04 15:04:44,829 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 93 selfloop transitions, 14 changer transitions 0/109 dead transitions. [2024-06-04 15:04:44,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 109 transitions, 960 flow [2024-06-04 15:04:44,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:04:44,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:04:44,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-04 15:04:44,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-04 15:04:44,831 INFO L175 Difference]: Start difference. First operand has 111 places, 90 transitions, 686 flow. Second operand 9 states and 105 transitions. [2024-06-04 15:04:44,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 109 transitions, 960 flow [2024-06-04 15:04:44,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 109 transitions, 922 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-04 15:04:44,849 INFO L231 Difference]: Finished difference. Result has 114 places, 92 transitions, 703 flow [2024-06-04 15:04:44,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=703, PETRI_PLACES=114, PETRI_TRANSITIONS=92} [2024-06-04 15:04:44,850 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 83 predicate places. [2024-06-04 15:04:44,850 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 92 transitions, 703 flow [2024-06-04 15:04:44,850 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) [2024-06-04 15:04:44,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:44,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:44,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-04 15:04:44,851 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)] === [2024-06-04 15:04:44,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:44,851 INFO L85 PathProgramCache]: Analyzing trace with hash 50552178, now seen corresponding path program 2 times [2024-06-04 15:04:44,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:44,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969154337] [2024-06-04 15:04:44,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:44,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:44,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:45,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:45,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:45,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969154337] [2024-06-04 15:04:45,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969154337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:45,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:45,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:04:45,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657869148] [2024-06-04 15:04:45,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:45,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:04:45,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:45,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:04:45,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:04:45,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:04:45,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 92 transitions, 703 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) [2024-06-04 15:04:45,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:45,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:04:45,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:45,991 INFO L124 PetriNetUnfolderBase]: 288/513 cut-off events. [2024-06-04 15:04:45,991 INFO L125 PetriNetUnfolderBase]: For 19945/19945 co-relation queries the response was YES. [2024-06-04 15:04:45,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3246 conditions, 513 events. 288/513 cut-off events. For 19945/19945 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1979 event pairs, 44 based on Foata normal form. 1/512 useless extension candidates. Maximal degree in co-relation 3188. Up to 477 conditions per place. [2024-06-04 15:04:45,994 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 93 selfloop transitions, 14 changer transitions 0/109 dead transitions. [2024-06-04 15:04:45,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 109 transitions, 973 flow [2024-06-04 15:04:45,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:04:45,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:04:45,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-04 15:04:45,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-04 15:04:45,995 INFO L175 Difference]: Start difference. First operand has 114 places, 92 transitions, 703 flow. Second operand 9 states and 103 transitions. [2024-06-04 15:04:45,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 109 transitions, 973 flow [2024-06-04 15:04:46,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 109 transitions, 934 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-04 15:04:46,018 INFO L231 Difference]: Finished difference. Result has 116 places, 94 transitions, 721 flow [2024-06-04 15:04:46,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=721, PETRI_PLACES=116, PETRI_TRANSITIONS=94} [2024-06-04 15:04:46,019 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 85 predicate places. [2024-06-04 15:04:46,019 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 94 transitions, 721 flow [2024-06-04 15:04:46,019 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) [2024-06-04 15:04:46,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:46,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:46,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-04 15:04:46,019 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)] === [2024-06-04 15:04:46,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:46,020 INFO L85 PathProgramCache]: Analyzing trace with hash 50547404, now seen corresponding path program 3 times [2024-06-04 15:04:46,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:46,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072140134] [2024-06-04 15:04:46,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:46,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:46,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:47,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:47,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:47,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072140134] [2024-06-04 15:04:47,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072140134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:47,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:47,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:04:47,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685344969] [2024-06-04 15:04:47,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:47,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:04:47,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:47,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:04:47,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:04:47,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:04:47,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 94 transitions, 721 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:04:47,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:47,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:04:47,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:47,435 INFO L124 PetriNetUnfolderBase]: 274/497 cut-off events. [2024-06-04 15:04:47,436 INFO L125 PetriNetUnfolderBase]: For 20685/20685 co-relation queries the response was YES. [2024-06-04 15:04:47,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3107 conditions, 497 events. 274/497 cut-off events. For 20685/20685 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1949 event pairs, 41 based on Foata normal form. 2/497 useless extension candidates. Maximal degree in co-relation 3048. Up to 422 conditions per place. [2024-06-04 15:04:47,438 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 81 selfloop transitions, 13 changer transitions 0/110 dead transitions. [2024-06-04 15:04:47,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 110 transitions, 947 flow [2024-06-04 15:04:47,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:04:47,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:04:47,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-04 15:04:47,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-04 15:04:47,440 INFO L175 Difference]: Start difference. First operand has 116 places, 94 transitions, 721 flow. Second operand 9 states and 111 transitions. [2024-06-04 15:04:47,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 110 transitions, 947 flow [2024-06-04 15:04:47,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 110 transitions, 902 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-04 15:04:47,465 INFO L231 Difference]: Finished difference. Result has 118 places, 94 transitions, 706 flow [2024-06-04 15:04:47,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=676, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=706, PETRI_PLACES=118, PETRI_TRANSITIONS=94} [2024-06-04 15:04:47,466 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 87 predicate places. [2024-06-04 15:04:47,466 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 94 transitions, 706 flow [2024-06-04 15:04:47,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:04:47,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:47,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:47,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-04 15:04:47,467 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)] === [2024-06-04 15:04:47,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:47,467 INFO L85 PathProgramCache]: Analyzing trace with hash 50547528, now seen corresponding path program 3 times [2024-06-04 15:04:47,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:47,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054501093] [2024-06-04 15:04:47,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:47,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:47,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:48,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:48,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:48,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054501093] [2024-06-04 15:04:48,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054501093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:48,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:48,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:04:48,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526297337] [2024-06-04 15:04:48,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:48,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:04:48,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:48,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:04:48,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:04:48,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:04:48,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 94 transitions, 706 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) [2024-06-04 15:04:48,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:48,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:04:48,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:48,600 INFO L124 PetriNetUnfolderBase]: 283/505 cut-off events. [2024-06-04 15:04:48,600 INFO L125 PetriNetUnfolderBase]: For 20368/20368 co-relation queries the response was YES. [2024-06-04 15:04:48,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3125 conditions, 505 events. 283/505 cut-off events. For 20368/20368 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1939 event pairs, 43 based on Foata normal form. 1/504 useless extension candidates. Maximal degree in co-relation 3065. Up to 463 conditions per place. [2024-06-04 15:04:48,603 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 90 selfloop transitions, 18 changer transitions 0/110 dead transitions. [2024-06-04 15:04:48,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 110 transitions, 960 flow [2024-06-04 15:04:48,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:04:48,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:04:48,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-04 15:04:48,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-04 15:04:48,617 INFO L175 Difference]: Start difference. First operand has 118 places, 94 transitions, 706 flow. Second operand 10 states and 112 transitions. [2024-06-04 15:04:48,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 110 transitions, 960 flow [2024-06-04 15:04:48,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 110 transitions, 920 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-04 15:04:48,644 INFO L231 Difference]: Finished difference. Result has 120 places, 94 transitions, 710 flow [2024-06-04 15:04:48,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=710, PETRI_PLACES=120, PETRI_TRANSITIONS=94} [2024-06-04 15:04:48,645 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 89 predicate places. [2024-06-04 15:04:48,645 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 94 transitions, 710 flow [2024-06-04 15:04:48,645 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) [2024-06-04 15:04:48,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:48,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:48,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-04 15:04:48,646 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)] === [2024-06-04 15:04:48,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:48,646 INFO L85 PathProgramCache]: Analyzing trace with hash 165838698, now seen corresponding path program 4 times [2024-06-04 15:04:48,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:48,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769152109] [2024-06-04 15:04:48,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:48,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:48,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:49,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:49,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:49,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769152109] [2024-06-04 15:04:49,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769152109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:49,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:49,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:04:49,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242840300] [2024-06-04 15:04:49,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:49,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:04:49,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:49,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:04:49,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:04:49,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:04:49,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 94 transitions, 710 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) [2024-06-04 15:04:49,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:49,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:04:49,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:49,702 INFO L124 PetriNetUnfolderBase]: 291/518 cut-off events. [2024-06-04 15:04:49,703 INFO L125 PetriNetUnfolderBase]: For 22179/22179 co-relation queries the response was YES. [2024-06-04 15:04:49,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3266 conditions, 518 events. 291/518 cut-off events. For 22179/22179 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2011 event pairs, 45 based on Foata normal form. 1/517 useless extension candidates. Maximal degree in co-relation 3205. Up to 431 conditions per place. [2024-06-04 15:04:49,706 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 74 selfloop transitions, 36 changer transitions 0/112 dead transitions. [2024-06-04 15:04:49,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 112 transitions, 1082 flow [2024-06-04 15:04:49,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:04:49,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:04:49,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-04 15:04:49,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-04 15:04:49,707 INFO L175 Difference]: Start difference. First operand has 120 places, 94 transitions, 710 flow. Second operand 10 states and 119 transitions. [2024-06-04 15:04:49,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 112 transitions, 1082 flow [2024-06-04 15:04:49,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 112 transitions, 1034 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-04 15:04:49,736 INFO L231 Difference]: Finished difference. Result has 121 places, 98 transitions, 794 flow [2024-06-04 15:04:49,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=794, PETRI_PLACES=121, PETRI_TRANSITIONS=98} [2024-06-04 15:04:49,736 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 90 predicate places. [2024-06-04 15:04:49,736 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 98 transitions, 794 flow [2024-06-04 15:04:49,736 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) [2024-06-04 15:04:49,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:49,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:49,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-04 15:04:49,737 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)] === [2024-06-04 15:04:49,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:49,737 INFO L85 PathProgramCache]: Analyzing trace with hash 165838574, now seen corresponding path program 4 times [2024-06-04 15:04:49,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:49,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17712247] [2024-06-04 15:04:49,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:49,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:49,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:50,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:50,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:50,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17712247] [2024-06-04 15:04:50,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17712247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:50,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:50,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:04:50,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890170198] [2024-06-04 15:04:50,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:50,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:04:50,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:50,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:04:50,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:04:50,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:04:50,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 98 transitions, 794 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:04:50,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:50,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:04:50,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:51,113 INFO L124 PetriNetUnfolderBase]: 284/515 cut-off events. [2024-06-04 15:04:51,113 INFO L125 PetriNetUnfolderBase]: For 23318/23318 co-relation queries the response was YES. [2024-06-04 15:04:51,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3310 conditions, 515 events. 284/515 cut-off events. For 23318/23318 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2058 event pairs, 42 based on Foata normal form. 2/515 useless extension candidates. Maximal degree in co-relation 3248. Up to 421 conditions per place. [2024-06-04 15:04:51,118 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 74 selfloop transitions, 20 changer transitions 0/112 dead transitions. [2024-06-04 15:04:51,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 112 transitions, 1030 flow [2024-06-04 15:04:51,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:04:51,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:04:51,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-04 15:04:51,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-04 15:04:51,129 INFO L175 Difference]: Start difference. First operand has 121 places, 98 transitions, 794 flow. Second operand 9 states and 112 transitions. [2024-06-04 15:04:51,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 112 transitions, 1030 flow [2024-06-04 15:04:51,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 112 transitions, 961 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-04 15:04:51,158 INFO L231 Difference]: Finished difference. Result has 124 places, 99 transitions, 789 flow [2024-06-04 15:04:51,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=725, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=789, PETRI_PLACES=124, PETRI_TRANSITIONS=99} [2024-06-04 15:04:51,158 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 93 predicate places. [2024-06-04 15:04:51,158 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 99 transitions, 789 flow [2024-06-04 15:04:51,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:04:51,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:51,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:51,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-04 15:04:51,159 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)] === [2024-06-04 15:04:51,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:51,160 INFO L85 PathProgramCache]: Analyzing trace with hash 293699668, now seen corresponding path program 2 times [2024-06-04 15:04:51,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:51,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128098157] [2024-06-04 15:04:51,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:51,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:51,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:51,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:51,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:51,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128098157] [2024-06-04 15:04:51,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128098157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:51,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:51,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:04:51,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65881917] [2024-06-04 15:04:51,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:51,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:04:51,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:51,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:04:51,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:04:51,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:04:51,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 99 transitions, 789 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) [2024-06-04 15:04:51,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:51,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:04:51,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:52,031 INFO L124 PetriNetUnfolderBase]: 329/581 cut-off events. [2024-06-04 15:04:52,031 INFO L125 PetriNetUnfolderBase]: For 28672/28672 co-relation queries the response was YES. [2024-06-04 15:04:52,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3856 conditions, 581 events. 329/581 cut-off events. For 28672/28672 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2355 event pairs, 55 based on Foata normal form. 3/582 useless extension candidates. Maximal degree in co-relation 3792. Up to 393 conditions per place. [2024-06-04 15:04:52,049 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 89 selfloop transitions, 36 changer transitions 0/127 dead transitions. [2024-06-04 15:04:52,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 127 transitions, 1309 flow [2024-06-04 15:04:52,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:04:52,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:04:52,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-04 15:04:52,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236111111111111 [2024-06-04 15:04:52,065 INFO L175 Difference]: Start difference. First operand has 124 places, 99 transitions, 789 flow. Second operand 9 states and 122 transitions. [2024-06-04 15:04:52,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 127 transitions, 1309 flow [2024-06-04 15:04:52,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 127 transitions, 1255 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-04 15:04:52,100 INFO L231 Difference]: Finished difference. Result has 126 places, 105 transitions, 882 flow [2024-06-04 15:04:52,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=882, PETRI_PLACES=126, PETRI_TRANSITIONS=105} [2024-06-04 15:04:52,102 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 95 predicate places. [2024-06-04 15:04:52,102 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 105 transitions, 882 flow [2024-06-04 15:04:52,102 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) [2024-06-04 15:04:52,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:52,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:52,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-04 15:04:52,102 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)] === [2024-06-04 15:04:52,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:52,103 INFO L85 PathProgramCache]: Analyzing trace with hash 293879158, now seen corresponding path program 3 times [2024-06-04 15:04:52,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:52,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479461649] [2024-06-04 15:04:52,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:52,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:52,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:52,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:52,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:52,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479461649] [2024-06-04 15:04:52,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479461649] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:52,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:52,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:04:52,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096176991] [2024-06-04 15:04:52,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:52,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:04:52,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:52,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:04:52,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:04:52,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:04:52,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 105 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) [2024-06-04 15:04:52,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:52,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:04:52,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:52,985 INFO L124 PetriNetUnfolderBase]: 338/596 cut-off events. [2024-06-04 15:04:52,986 INFO L125 PetriNetUnfolderBase]: For 30470/30470 co-relation queries the response was YES. [2024-06-04 15:04:52,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4039 conditions, 596 events. 338/596 cut-off events. For 30470/30470 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2423 event pairs, 53 based on Foata normal form. 3/597 useless extension candidates. Maximal degree in co-relation 3974. Up to 401 conditions per place. [2024-06-04 15:04:52,989 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 84 selfloop transitions, 41 changer transitions 0/127 dead transitions. [2024-06-04 15:04:52,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 127 transitions, 1360 flow [2024-06-04 15:04:52,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:04:52,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:04:52,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-04 15:04:52,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-04 15:04:52,990 INFO L175 Difference]: Start difference. First operand has 126 places, 105 transitions, 882 flow. Second operand 9 states and 118 transitions. [2024-06-04 15:04:52,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 127 transitions, 1360 flow [2024-06-04 15:04:53,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 127 transitions, 1317 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-04 15:04:53,032 INFO L231 Difference]: Finished difference. Result has 131 places, 107 transitions, 952 flow [2024-06-04 15:04:53,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=841, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=952, PETRI_PLACES=131, PETRI_TRANSITIONS=107} [2024-06-04 15:04:53,033 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 100 predicate places. [2024-06-04 15:04:53,033 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 107 transitions, 952 flow [2024-06-04 15:04:53,033 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) [2024-06-04 15:04:53,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:53,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:53,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-04 15:04:53,034 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)] === [2024-06-04 15:04:53,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:53,034 INFO L85 PathProgramCache]: Analyzing trace with hash 293872648, now seen corresponding path program 4 times [2024-06-04 15:04:53,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:53,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385648699] [2024-06-04 15:04:53,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:53,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:53,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:53,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:53,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:53,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385648699] [2024-06-04 15:04:53,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385648699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:53,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:53,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:04:53,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753336071] [2024-06-04 15:04:53,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:53,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:04:53,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:53,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:04:53,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:04:53,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:04:53,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 107 transitions, 952 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) [2024-06-04 15:04:53,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:53,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:04:53,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:54,013 INFO L124 PetriNetUnfolderBase]: 332/587 cut-off events. [2024-06-04 15:04:54,013 INFO L125 PetriNetUnfolderBase]: For 29789/29789 co-relation queries the response was YES. [2024-06-04 15:04:54,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3985 conditions, 587 events. 332/587 cut-off events. For 29789/29789 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2388 event pairs, 51 based on Foata normal form. 3/588 useless extension candidates. Maximal degree in co-relation 3918. Up to 397 conditions per place. [2024-06-04 15:04:54,017 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 87 selfloop transitions, 39 changer transitions 0/128 dead transitions. [2024-06-04 15:04:54,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 128 transitions, 1336 flow [2024-06-04 15:04:54,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:04:54,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:04:54,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-04 15:04:54,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-04 15:04:54,032 INFO L175 Difference]: Start difference. First operand has 131 places, 107 transitions, 952 flow. Second operand 9 states and 120 transitions. [2024-06-04 15:04:54,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 128 transitions, 1336 flow [2024-06-04 15:04:54,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 128 transitions, 1237 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-04 15:04:54,075 INFO L231 Difference]: Finished difference. Result has 134 places, 107 transitions, 936 flow [2024-06-04 15:04:54,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=853, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=936, PETRI_PLACES=134, PETRI_TRANSITIONS=107} [2024-06-04 15:04:54,076 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 103 predicate places. [2024-06-04 15:04:54,076 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 107 transitions, 936 flow [2024-06-04 15:04:54,076 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) [2024-06-04 15:04:54,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:54,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:54,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-04 15:04:54,076 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)] === [2024-06-04 15:04:54,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:54,077 INFO L85 PathProgramCache]: Analyzing trace with hash 166016328, now seen corresponding path program 5 times [2024-06-04 15:04:54,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:54,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362445613] [2024-06-04 15:04:54,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:54,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:54,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:54,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:54,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:54,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362445613] [2024-06-04 15:04:54,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362445613] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:54,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:54,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:04:54,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546184311] [2024-06-04 15:04:54,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:54,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:04:54,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:54,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:04:54,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:04:54,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:04:54,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 107 transitions, 936 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) [2024-06-04 15:04:54,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:54,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:04:54,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:54,970 INFO L124 PetriNetUnfolderBase]: 330/584 cut-off events. [2024-06-04 15:04:54,970 INFO L125 PetriNetUnfolderBase]: For 28623/28623 co-relation queries the response was YES. [2024-06-04 15:04:54,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3905 conditions, 584 events. 330/584 cut-off events. For 28623/28623 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2363 event pairs, 54 based on Foata normal form. 1/583 useless extension candidates. Maximal degree in co-relation 3837. Up to 506 conditions per place. [2024-06-04 15:04:54,973 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 84 selfloop transitions, 33 changer transitions 0/119 dead transitions. [2024-06-04 15:04:54,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 119 transitions, 1198 flow [2024-06-04 15:04:54,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:04:54,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:04:54,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-04 15:04:54,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2024-06-04 15:04:54,974 INFO L175 Difference]: Start difference. First operand has 134 places, 107 transitions, 936 flow. Second operand 9 states and 107 transitions. [2024-06-04 15:04:54,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 119 transitions, 1198 flow [2024-06-04 15:04:55,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 119 transitions, 1093 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-04 15:04:55,029 INFO L231 Difference]: Finished difference. Result has 134 places, 107 transitions, 902 flow [2024-06-04 15:04:55,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=831, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=902, PETRI_PLACES=134, PETRI_TRANSITIONS=107} [2024-06-04 15:04:55,030 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 103 predicate places. [2024-06-04 15:04:55,030 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 107 transitions, 902 flow [2024-06-04 15:04:55,030 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) [2024-06-04 15:04:55,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:55,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:55,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-04 15:04:55,035 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:04:55,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:55,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1204036464, now seen corresponding path program 6 times [2024-06-04 15:04:55,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:55,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416734317] [2024-06-04 15:04:55,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:55,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:55,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:55,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:55,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:55,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416734317] [2024-06-04 15:04:55,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416734317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:55,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:55,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:04:55,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151669007] [2024-06-04 15:04:55,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:55,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:04:55,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:55,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:04:55,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:04:55,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:04:55,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 107 transitions, 902 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) [2024-06-04 15:04:55,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:55,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:04:55,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:55,939 INFO L124 PetriNetUnfolderBase]: 333/589 cut-off events. [2024-06-04 15:04:55,939 INFO L125 PetriNetUnfolderBase]: For 29823/29823 co-relation queries the response was YES. [2024-06-04 15:04:55,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3913 conditions, 589 events. 333/589 cut-off events. For 29823/29823 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2405 event pairs, 52 based on Foata normal form. 1/588 useless extension candidates. Maximal degree in co-relation 3844. Up to 539 conditions per place. [2024-06-04 15:04:55,943 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 94 selfloop transitions, 25 changer transitions 0/121 dead transitions. [2024-06-04 15:04:55,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 121 transitions, 1300 flow [2024-06-04 15:04:55,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:04:55,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:04:55,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-04 15:04:55,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-04 15:04:55,944 INFO L175 Difference]: Start difference. First operand has 134 places, 107 transitions, 902 flow. Second operand 9 states and 102 transitions. [2024-06-04 15:04:55,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 121 transitions, 1300 flow [2024-06-04 15:04:55,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 121 transitions, 1229 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-04 15:04:55,996 INFO L231 Difference]: Finished difference. Result has 135 places, 111 transitions, 946 flow [2024-06-04 15:04:55,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=831, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=946, PETRI_PLACES=135, PETRI_TRANSITIONS=111} [2024-06-04 15:04:55,997 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 104 predicate places. [2024-06-04 15:04:55,997 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 111 transitions, 946 flow [2024-06-04 15:04:55,998 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) [2024-06-04 15:04:55,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:55,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:55,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-04 15:04:55,998 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)] === [2024-06-04 15:04:55,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:55,998 INFO L85 PathProgramCache]: Analyzing trace with hash 459333842, now seen corresponding path program 5 times [2024-06-04 15:04:55,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:55,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159887761] [2024-06-04 15:04:55,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:55,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:56,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:56,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:56,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:56,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159887761] [2024-06-04 15:04:56,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159887761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:56,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:56,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:04:56,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605434988] [2024-06-04 15:04:56,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:56,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:04:56,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:56,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:04:56,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:04:57,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:04:57,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 111 transitions, 946 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:04:57,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:57,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:04:57,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:57,294 INFO L124 PetriNetUnfolderBase]: 318/572 cut-off events. [2024-06-04 15:04:57,294 INFO L125 PetriNetUnfolderBase]: For 30524/30524 co-relation queries the response was YES. [2024-06-04 15:04:57,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3774 conditions, 572 events. 318/572 cut-off events. For 30524/30524 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2365 event pairs, 53 based on Foata normal form. 2/572 useless extension candidates. Maximal degree in co-relation 3704. Up to 504 conditions per place. [2024-06-04 15:04:57,298 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 88 selfloop transitions, 13 changer transitions 0/121 dead transitions. [2024-06-04 15:04:57,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 121 transitions, 1170 flow [2024-06-04 15:04:57,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:04:57,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:04:57,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-04 15:04:57,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-04 15:04:57,299 INFO L175 Difference]: Start difference. First operand has 135 places, 111 transitions, 946 flow. Second operand 9 states and 105 transitions. [2024-06-04 15:04:57,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 121 transitions, 1170 flow [2024-06-04 15:04:57,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 121 transitions, 1106 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-04 15:04:57,352 INFO L231 Difference]: Finished difference. Result has 139 places, 111 transitions, 912 flow [2024-06-04 15:04:57,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=912, PETRI_PLACES=139, PETRI_TRANSITIONS=111} [2024-06-04 15:04:57,352 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 108 predicate places. [2024-06-04 15:04:57,352 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 111 transitions, 912 flow [2024-06-04 15:04:57,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:04:57,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:57,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:57,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-04 15:04:57,353 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)] === [2024-06-04 15:04:57,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:57,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1409278096, now seen corresponding path program 5 times [2024-06-04 15:04:57,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:57,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595613313] [2024-06-04 15:04:57,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:57,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:57,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:57,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:57,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:57,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595613313] [2024-06-04 15:04:57,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595613313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:57,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:57,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:04:57,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055077049] [2024-06-04 15:04:57,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:57,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:04:57,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:57,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:04:57,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:04:57,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:04:57,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 111 transitions, 912 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) [2024-06-04 15:04:57,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:57,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:04:57,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:58,129 INFO L124 PetriNetUnfolderBase]: 354/623 cut-off events. [2024-06-04 15:04:58,129 INFO L125 PetriNetUnfolderBase]: For 35680/35680 co-relation queries the response was YES. [2024-06-04 15:04:58,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4183 conditions, 623 events. 354/623 cut-off events. For 35680/35680 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2580 event pairs, 57 based on Foata normal form. 3/624 useless extension candidates. Maximal degree in co-relation 4111. Up to 502 conditions per place. [2024-06-04 15:04:58,134 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 103 selfloop transitions, 27 changer transitions 0/132 dead transitions. [2024-06-04 15:04:58,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 132 transitions, 1438 flow [2024-06-04 15:04:58,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:04:58,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:04:58,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-04 15:04:58,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-04 15:04:58,135 INFO L175 Difference]: Start difference. First operand has 139 places, 111 transitions, 912 flow. Second operand 9 states and 112 transitions. [2024-06-04 15:04:58,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 132 transitions, 1438 flow [2024-06-04 15:04:58,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 132 transitions, 1367 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-04 15:04:58,188 INFO L231 Difference]: Finished difference. Result has 139 places, 115 transitions, 952 flow [2024-06-04 15:04:58,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=841, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=952, PETRI_PLACES=139, PETRI_TRANSITIONS=115} [2024-06-04 15:04:58,189 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 108 predicate places. [2024-06-04 15:04:58,189 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 115 transitions, 952 flow [2024-06-04 15:04:58,189 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) [2024-06-04 15:04:58,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:58,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:58,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-04 15:04:58,190 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)] === [2024-06-04 15:04:58,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:58,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1409457772, now seen corresponding path program 7 times [2024-06-04 15:04:58,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:58,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446031663] [2024-06-04 15:04:58,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:58,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:58,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:58,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:58,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446031663] [2024-06-04 15:04:58,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446031663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:58,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:58,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:04:58,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491056393] [2024-06-04 15:04:58,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:58,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:04:58,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:58,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:04:58,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:04:59,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:04:59,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 115 transitions, 952 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) [2024-06-04 15:04:59,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:59,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:04:59,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:59,222 INFO L124 PetriNetUnfolderBase]: 357/628 cut-off events. [2024-06-04 15:04:59,222 INFO L125 PetriNetUnfolderBase]: For 35320/35320 co-relation queries the response was YES. [2024-06-04 15:04:59,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4231 conditions, 628 events. 357/628 cut-off events. For 35320/35320 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2610 event pairs, 61 based on Foata normal form. 1/627 useless extension candidates. Maximal degree in co-relation 4159. Up to 589 conditions per place. [2024-06-04 15:04:59,226 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 102 selfloop transitions, 22 changer transitions 0/126 dead transitions. [2024-06-04 15:04:59,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 126 transitions, 1238 flow [2024-06-04 15:04:59,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:04:59,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:04:59,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-04 15:04:59,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-04 15:04:59,227 INFO L175 Difference]: Start difference. First operand has 139 places, 115 transitions, 952 flow. Second operand 9 states and 100 transitions. [2024-06-04 15:04:59,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 126 transitions, 1238 flow [2024-06-04 15:04:59,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 126 transitions, 1128 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-04 15:04:59,286 INFO L231 Difference]: Finished difference. Result has 139 places, 117 transitions, 913 flow [2024-06-04 15:04:59,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=913, PETRI_PLACES=139, PETRI_TRANSITIONS=117} [2024-06-04 15:04:59,286 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 108 predicate places. [2024-06-04 15:04:59,287 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 117 transitions, 913 flow [2024-06-04 15:04:59,287 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) [2024-06-04 15:04:59,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:59,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:59,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-04 15:04:59,287 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)] === [2024-06-04 15:04:59,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:59,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1409457586, now seen corresponding path program 6 times [2024-06-04 15:04:59,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:59,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041829654] [2024-06-04 15:04:59,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:59,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:59,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:59,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:59,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:59,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041829654] [2024-06-04 15:04:59,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041829654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:59,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:59,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:04:59,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242362587] [2024-06-04 15:04:59,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:59,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:04:59,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:59,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:04:59,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:04:59,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:04:59,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 117 transitions, 913 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) [2024-06-04 15:04:59,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:59,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:04:59,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:05:00,149 INFO L124 PetriNetUnfolderBase]: 366/643 cut-off events. [2024-06-04 15:05:00,150 INFO L125 PetriNetUnfolderBase]: For 38591/38591 co-relation queries the response was YES. [2024-06-04 15:05:00,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4151 conditions, 643 events. 366/643 cut-off events. For 38591/38591 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2699 event pairs, 53 based on Foata normal form. 3/644 useless extension candidates. Maximal degree in co-relation 4081. Up to 515 conditions per place. [2024-06-04 15:05:00,154 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 102 selfloop transitions, 31 changer transitions 0/135 dead transitions. [2024-06-04 15:05:00,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 135 transitions, 1331 flow [2024-06-04 15:05:00,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:05:00,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:05:00,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-04 15:05:00,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-04 15:05:00,155 INFO L175 Difference]: Start difference. First operand has 139 places, 117 transitions, 913 flow. Second operand 9 states and 110 transitions. [2024-06-04 15:05:00,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 135 transitions, 1331 flow [2024-06-04 15:05:00,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 135 transitions, 1280 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-04 15:05:00,215 INFO L231 Difference]: Finished difference. Result has 141 places, 119 transitions, 951 flow [2024-06-04 15:05:00,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=862, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=951, PETRI_PLACES=141, PETRI_TRANSITIONS=119} [2024-06-04 15:05:00,216 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 110 predicate places. [2024-06-04 15:05:00,216 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 119 transitions, 951 flow [2024-06-04 15:05:00,216 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) [2024-06-04 15:05:00,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:05:00,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:05:00,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-04 15:05:00,216 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)] === [2024-06-04 15:05:00,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:05:00,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1409284606, now seen corresponding path program 7 times [2024-06-04 15:05:00,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:05:00,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084496784] [2024-06-04 15:05:00,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:05:00,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:05:00,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:05:00,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:05:00,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:05:00,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084496784] [2024-06-04 15:05:00,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084496784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:05:00,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:05:00,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:05:00,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223898531] [2024-06-04 15:05:00,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:05:00,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:05:00,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:05:00,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:05:00,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:05:00,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:05:00,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 119 transitions, 951 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) [2024-06-04 15:05:00,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:05:00,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:05:00,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:05:01,071 INFO L124 PetriNetUnfolderBase]: 360/634 cut-off events. [2024-06-04 15:05:01,071 INFO L125 PetriNetUnfolderBase]: For 37202/37202 co-relation queries the response was YES. [2024-06-04 15:05:01,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4060 conditions, 634 events. 360/634 cut-off events. For 37202/37202 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2656 event pairs, 51 based on Foata normal form. 3/635 useless extension candidates. Maximal degree in co-relation 3989. Up to 511 conditions per place. [2024-06-04 15:05:01,075 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 107 selfloop transitions, 28 changer transitions 0/137 dead transitions. [2024-06-04 15:05:01,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 137 transitions, 1359 flow [2024-06-04 15:05:01,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:05:01,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:05:01,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-04 15:05:01,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-04 15:05:01,078 INFO L175 Difference]: Start difference. First operand has 141 places, 119 transitions, 951 flow. Second operand 9 states and 114 transitions. [2024-06-04 15:05:01,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 137 transitions, 1359 flow [2024-06-04 15:05:01,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 137 transitions, 1286 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-04 15:05:01,142 INFO L231 Difference]: Finished difference. Result has 144 places, 119 transitions, 939 flow [2024-06-04 15:05:01,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=939, PETRI_PLACES=144, PETRI_TRANSITIONS=119} [2024-06-04 15:05:01,143 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 113 predicate places. [2024-06-04 15:05:01,143 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 119 transitions, 939 flow [2024-06-04 15:05:01,144 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) [2024-06-04 15:05:01,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:05:01,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:05:01,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-04 15:05:01,144 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)] === [2024-06-04 15:05:01,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:05:01,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1409284792, now seen corresponding path program 8 times [2024-06-04 15:05:01,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:05:01,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294129817] [2024-06-04 15:05:01,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:05:01,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:05:01,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:05:01,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:05:01,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:05:01,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294129817] [2024-06-04 15:05:01,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294129817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:05:01,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:05:01,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:05:01,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037280424] [2024-06-04 15:05:01,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:05:01,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:05:01,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:05:01,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:05:01,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:05:01,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:05:01,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 119 transitions, 939 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) [2024-06-04 15:05:01,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:05:01,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:05:01,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:05:02,246 INFO L124 PetriNetUnfolderBase]: 363/639 cut-off events. [2024-06-04 15:05:02,246 INFO L125 PetriNetUnfolderBase]: For 36236/36236 co-relation queries the response was YES. [2024-06-04 15:05:02,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4077 conditions, 639 events. 363/639 cut-off events. For 36236/36236 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2674 event pairs, 59 based on Foata normal form. 1/638 useless extension candidates. Maximal degree in co-relation 4005. Up to 600 conditions per place. [2024-06-04 15:05:02,250 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 107 selfloop transitions, 21 changer transitions 0/130 dead transitions. [2024-06-04 15:05:02,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 130 transitions, 1237 flow [2024-06-04 15:05:02,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:05:02,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:05:02,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-04 15:05:02,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-04 15:05:02,253 INFO L175 Difference]: Start difference. First operand has 144 places, 119 transitions, 939 flow. Second operand 9 states and 101 transitions. [2024-06-04 15:05:02,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 130 transitions, 1237 flow [2024-06-04 15:05:02,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 130 transitions, 1175 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-04 15:05:02,318 INFO L231 Difference]: Finished difference. Result has 145 places, 121 transitions, 950 flow [2024-06-04 15:05:02,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=877, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=950, PETRI_PLACES=145, PETRI_TRANSITIONS=121} [2024-06-04 15:05:02,318 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 114 predicate places. [2024-06-04 15:05:02,319 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 121 transitions, 950 flow [2024-06-04 15:05:02,319 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) [2024-06-04 15:05:02,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:05:02,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:05:02,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-04 15:05:02,319 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)] === [2024-06-04 15:05:02,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:05:02,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1181376946, now seen corresponding path program 8 times [2024-06-04 15:05:02,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:05:02,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792566529] [2024-06-04 15:05:02,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:05:02,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:05:02,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:05:02,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:05:02,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:05:02,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792566529] [2024-06-04 15:05:02,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792566529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:05:02,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:05:02,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:05:02,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164765286] [2024-06-04 15:05:02,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:05:02,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:05:02,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:05:02,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:05:02,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:05:02,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:05:02,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 121 transitions, 950 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) [2024-06-04 15:05:02,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:05:02,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:05:02,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:05:03,148 INFO L124 PetriNetUnfolderBase]: 387/678 cut-off events. [2024-06-04 15:05:03,149 INFO L125 PetriNetUnfolderBase]: For 43719/43719 co-relation queries the response was YES. [2024-06-04 15:05:03,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4409 conditions, 678 events. 387/678 cut-off events. For 43719/43719 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2887 event pairs, 61 based on Foata normal form. 3/679 useless extension candidates. Maximal degree in co-relation 4336. Up to 591 conditions per place. [2024-06-04 15:05:03,153 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 119 selfloop transitions, 21 changer transitions 0/142 dead transitions. [2024-06-04 15:05:03,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 142 transitions, 1512 flow [2024-06-04 15:05:03,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:05:03,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:05:03,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-04 15:05:03,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3784722222222222 [2024-06-04 15:05:03,154 INFO L175 Difference]: Start difference. First operand has 145 places, 121 transitions, 950 flow. Second operand 9 states and 109 transitions. [2024-06-04 15:05:03,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 142 transitions, 1512 flow [2024-06-04 15:05:03,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 142 transitions, 1459 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-04 15:05:03,226 INFO L231 Difference]: Finished difference. Result has 147 places, 125 transitions, 992 flow [2024-06-04 15:05:03,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=897, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=992, PETRI_PLACES=147, PETRI_TRANSITIONS=125} [2024-06-04 15:05:03,226 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 116 predicate places. [2024-06-04 15:05:03,227 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 125 transitions, 992 flow [2024-06-04 15:05:03,227 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) [2024-06-04 15:05:03,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:05:03,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:05:03,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-04 15:05:03,228 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)] === [2024-06-04 15:05:03,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:05:03,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1181383456, now seen corresponding path program 9 times [2024-06-04 15:05:03,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:05:03,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265724123] [2024-06-04 15:05:03,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:05:03,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:05:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:05:03,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:05:03,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:05:03,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265724123] [2024-06-04 15:05:03,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265724123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:05:03,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:05:03,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:05:03,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576813690] [2024-06-04 15:05:03,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:05:03,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:05:03,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:05:03,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:05:03,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:05:03,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:05:03,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 125 transitions, 992 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) [2024-06-04 15:05:03,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:05:03,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:05:03,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:05:04,229 INFO L124 PetriNetUnfolderBase]: 381/669 cut-off events. [2024-06-04 15:05:04,229 INFO L125 PetriNetUnfolderBase]: For 41978/41978 co-relation queries the response was YES. [2024-06-04 15:05:04,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4273 conditions, 669 events. 381/669 cut-off events. For 41978/41978 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2849 event pairs, 53 based on Foata normal form. 3/670 useless extension candidates. Maximal degree in co-relation 4199. Up to 587 conditions per place. [2024-06-04 15:05:04,233 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 117 selfloop transitions, 22 changer transitions 0/141 dead transitions. [2024-06-04 15:05:04,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 141 transitions, 1408 flow [2024-06-04 15:05:04,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:05:04,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:05:04,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-04 15:05:04,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2024-06-04 15:05:04,234 INFO L175 Difference]: Start difference. First operand has 147 places, 125 transitions, 992 flow. Second operand 9 states and 107 transitions. [2024-06-04 15:05:04,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 141 transitions, 1408 flow [2024-06-04 15:05:04,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 141 transitions, 1340 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-04 15:05:04,308 INFO L231 Difference]: Finished difference. Result has 150 places, 125 transitions, 973 flow [2024-06-04 15:05:04,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=924, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=973, PETRI_PLACES=150, PETRI_TRANSITIONS=125} [2024-06-04 15:05:04,309 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 119 predicate places. [2024-06-04 15:05:04,309 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 125 transitions, 973 flow [2024-06-04 15:05:04,309 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) [2024-06-04 15:05:04,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:05:04,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:05:04,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-04 15:05:04,310 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)] === [2024-06-04 15:05:04,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:05:04,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1181383642, now seen corresponding path program 9 times [2024-06-04 15:05:04,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:05:04,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457096549] [2024-06-04 15:05:04,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:05:04,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:05:04,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:05:05,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:05:05,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:05:05,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457096549] [2024-06-04 15:05:05,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457096549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:05:05,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:05:05,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:05:05,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015906072] [2024-06-04 15:05:05,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:05:05,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:05:05,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:05:05,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:05:05,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:05:05,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:05:05,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 125 transitions, 973 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) [2024-06-04 15:05:05,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:05:05,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:05:05,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:05:05,492 INFO L124 PetriNetUnfolderBase]: 379/666 cut-off events. [2024-06-04 15:05:05,492 INFO L125 PetriNetUnfolderBase]: For 39585/39585 co-relation queries the response was YES. [2024-06-04 15:05:05,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4192 conditions, 666 events. 379/666 cut-off events. For 39585/39585 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2827 event pairs, 63 based on Foata normal form. 1/665 useless extension candidates. Maximal degree in co-relation 4117. Up to 642 conditions per place. [2024-06-04 15:05:05,497 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 118 selfloop transitions, 14 changer transitions 0/134 dead transitions. [2024-06-04 15:05:05,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 134 transitions, 1257 flow [2024-06-04 15:05:05,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:05:05,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:05:05,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-04 15:05:05,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-04 15:05:05,498 INFO L175 Difference]: Start difference. First operand has 150 places, 125 transitions, 973 flow. Second operand 9 states and 97 transitions. [2024-06-04 15:05:05,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 134 transitions, 1257 flow [2024-06-04 15:05:05,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 134 transitions, 1191 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-04 15:05:05,573 INFO L231 Difference]: Finished difference. Result has 151 places, 125 transitions, 940 flow [2024-06-04 15:05:05,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=907, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=940, PETRI_PLACES=151, PETRI_TRANSITIONS=125} [2024-06-04 15:05:05,574 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 120 predicate places. [2024-06-04 15:05:05,574 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 125 transitions, 940 flow [2024-06-04 15:05:05,574 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) [2024-06-04 15:05:05,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:05:05,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:05:05,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-04 15:05:05,574 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)] === [2024-06-04 15:05:05,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:05:05,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1172805818, now seen corresponding path program 1 times [2024-06-04 15:05:05,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:05:05,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821822835] [2024-06-04 15:05:05,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:05:05,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:05:05,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:05:06,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:05:06,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:05:06,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821822835] [2024-06-04 15:05:06,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821822835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:05:06,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:05:06,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:05:06,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988809502] [2024-06-04 15:05:06,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:05:06,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:05:06,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:05:06,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:05:06,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:05:06,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:05:06,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 125 transitions, 940 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) [2024-06-04 15:05:06,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:05:06,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:05:06,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:05:06,768 INFO L124 PetriNetUnfolderBase]: 375/660 cut-off events. [2024-06-04 15:05:06,768 INFO L125 PetriNetUnfolderBase]: For 39758/39758 co-relation queries the response was YES. [2024-06-04 15:05:06,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4045 conditions, 660 events. 375/660 cut-off events. For 39758/39758 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2791 event pairs, 55 based on Foata normal form. 2/660 useless extension candidates. Maximal degree in co-relation 3969. Up to 628 conditions per place. [2024-06-04 15:05:06,772 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 122 selfloop transitions, 14 changer transitions 0/138 dead transitions. [2024-06-04 15:05:06,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 138 transitions, 1252 flow [2024-06-04 15:05:06,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:05:06,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:05:06,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-04 15:05:06,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 15:05:06,774 INFO L175 Difference]: Start difference. First operand has 151 places, 125 transitions, 940 flow. Second operand 9 states and 99 transitions. [2024-06-04 15:05:06,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 138 transitions, 1252 flow [2024-06-04 15:05:06,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 138 transitions, 1205 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-04 15:05:06,856 INFO L231 Difference]: Finished difference. Result has 152 places, 127 transitions, 946 flow [2024-06-04 15:05:06,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=893, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=946, PETRI_PLACES=152, PETRI_TRANSITIONS=127} [2024-06-04 15:05:06,856 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 121 predicate places. [2024-06-04 15:05:06,856 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 127 transitions, 946 flow [2024-06-04 15:05:06,862 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) [2024-06-04 15:05:06,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:05:06,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:05:06,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-04 15:05:06,863 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)] === [2024-06-04 15:05:06,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:05:06,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1173102736, now seen corresponding path program 10 times [2024-06-04 15:05:06,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:05:06,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887868235] [2024-06-04 15:05:06,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:05:06,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:05:06,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:05:07,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:05:07,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:05:07,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887868235] [2024-06-04 15:05:07,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887868235] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:05:07,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:05:07,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:05:07,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699815233] [2024-06-04 15:05:07,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:05:07,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:05:07,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:05:07,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:05:07,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:05:07,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:05:07,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 127 transitions, 946 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) [2024-06-04 15:05:07,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:05:07,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:05:07,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:05:07,865 INFO L124 PetriNetUnfolderBase]: 369/651 cut-off events. [2024-06-04 15:05:07,865 INFO L125 PetriNetUnfolderBase]: For 38324/38324 co-relation queries the response was YES. [2024-06-04 15:05:07,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3890 conditions, 651 events. 369/651 cut-off events. For 38324/38324 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2760 event pairs, 54 based on Foata normal form. 3/652 useless extension candidates. Maximal degree in co-relation 3813. Up to 611 conditions per place. [2024-06-04 15:05:07,869 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 124 selfloop transitions, 14 changer transitions 0/140 dead transitions. [2024-06-04 15:05:07,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 140 transitions, 1254 flow [2024-06-04 15:05:07,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:05:07,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:05:07,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-04 15:05:07,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-04 15:05:07,871 INFO L175 Difference]: Start difference. First operand has 152 places, 127 transitions, 946 flow. Second operand 9 states and 101 transitions. [2024-06-04 15:05:07,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 140 transitions, 1254 flow [2024-06-04 15:05:07,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 140 transitions, 1202 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-04 15:05:07,970 INFO L231 Difference]: Finished difference. Result has 154 places, 127 transitions, 927 flow [2024-06-04 15:05:07,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=927, PETRI_PLACES=154, PETRI_TRANSITIONS=127} [2024-06-04 15:05:07,970 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 123 predicate places. [2024-06-04 15:05:07,970 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 127 transitions, 927 flow [2024-06-04 15:05:07,970 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) [2024-06-04 15:05:07,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:05:07,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:05:07,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-04 15:05:07,971 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)] === [2024-06-04 15:05:07,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:05:07,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1172794906, now seen corresponding path program 1 times [2024-06-04 15:05:07,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:05:07,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769069093] [2024-06-04 15:05:07,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:05:07,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:05:07,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:05:08,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:05:08,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:05:08,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769069093] [2024-06-04 15:05:08,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769069093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:05:08,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:05:08,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:05:08,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335828908] [2024-06-04 15:05:08,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:05:08,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:05:08,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:05:08,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:05:08,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:05:08,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:05:08,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 127 transitions, 927 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) [2024-06-04 15:05:08,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:05:08,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:05:08,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:05:09,168 INFO L124 PetriNetUnfolderBase]: 366/646 cut-off events. [2024-06-04 15:05:09,169 INFO L125 PetriNetUnfolderBase]: For 35605/35605 co-relation queries the response was YES. [2024-06-04 15:05:09,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3760 conditions, 646 events. 366/646 cut-off events. For 35605/35605 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2706 event pairs, 52 based on Foata normal form. 2/646 useless extension candidates. Maximal degree in co-relation 3682. Up to 616 conditions per place. [2024-06-04 15:05:09,173 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 123 selfloop transitions, 13 changer transitions 0/138 dead transitions. [2024-06-04 15:05:09,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 138 transitions, 1223 flow [2024-06-04 15:05:09,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:05:09,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:05:09,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-04 15:05:09,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-04 15:05:09,174 INFO L175 Difference]: Start difference. First operand has 154 places, 127 transitions, 927 flow. Second operand 9 states and 97 transitions. [2024-06-04 15:05:09,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 138 transitions, 1223 flow [2024-06-04 15:05:09,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 138 transitions, 1179 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-04 15:05:09,232 INFO L231 Difference]: Finished difference. Result has 154 places, 127 transitions, 913 flow [2024-06-04 15:05:09,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=883, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=913, PETRI_PLACES=154, PETRI_TRANSITIONS=127} [2024-06-04 15:05:09,232 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 123 predicate places. [2024-06-04 15:05:09,232 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 127 transitions, 913 flow [2024-06-04 15:05:09,232 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) [2024-06-04 15:05:09,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:05:09,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:05:09,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-04 15:05:09,233 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)] === [2024-06-04 15:05:09,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:05:09,233 INFO L85 PathProgramCache]: Analyzing trace with hash 858653444, now seen corresponding path program 1 times [2024-06-04 15:05:09,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:05:09,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082821994] [2024-06-04 15:05:09,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:05:09,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:05:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:05:10,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:05:10,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:05:10,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082821994] [2024-06-04 15:05:10,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082821994] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:05:10,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:05:10,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:05:10,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884333015] [2024-06-04 15:05:10,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:05:10,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:05:10,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:05:10,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:05:10,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:05:10,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:05:10,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 127 transitions, 913 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) [2024-06-04 15:05:10,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:05:10,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:05:10,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:05:10,552 INFO L124 PetriNetUnfolderBase]: 377/667 cut-off events. [2024-06-04 15:05:10,552 INFO L125 PetriNetUnfolderBase]: For 39945/39945 co-relation queries the response was YES. [2024-06-04 15:05:10,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3984 conditions, 667 events. 377/667 cut-off events. For 39945/39945 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2857 event pairs, 39 based on Foata normal form. 2/667 useless extension candidates. Maximal degree in co-relation 3905. Up to 543 conditions per place. [2024-06-04 15:05:10,556 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 127 selfloop transitions, 24 changer transitions 0/153 dead transitions. [2024-06-04 15:05:10,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 153 transitions, 1411 flow [2024-06-04 15:05:10,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:05:10,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:05:10,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-04 15:05:10,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-04 15:05:10,557 INFO L175 Difference]: Start difference. First operand has 154 places, 127 transitions, 913 flow. Second operand 11 states and 129 transitions. [2024-06-04 15:05:10,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 153 transitions, 1411 flow [2024-06-04 15:05:10,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 153 transitions, 1379 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-04 15:05:10,660 INFO L231 Difference]: Finished difference. Result has 158 places, 129 transitions, 967 flow [2024-06-04 15:05:10,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=881, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=967, PETRI_PLACES=158, PETRI_TRANSITIONS=129} [2024-06-04 15:05:10,660 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 127 predicate places. [2024-06-04 15:05:10,661 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 129 transitions, 967 flow [2024-06-04 15:05:10,661 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) [2024-06-04 15:05:10,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:05:10,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:05:10,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-04 15:05:10,661 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)] === [2024-06-04 15:05:10,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:05:10,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1148851412, now seen corresponding path program 2 times [2024-06-04 15:05:10,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:05:10,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602736619] [2024-06-04 15:05:10,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:05:10,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:05:10,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:05:11,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:05:11,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:05:11,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602736619] [2024-06-04 15:05:11,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602736619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:05:11,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:05:11,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:05:11,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901405610] [2024-06-04 15:05:11,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:05:11,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:05:11,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:05:11,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:05:11,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:05:11,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:05:11,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 129 transitions, 967 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) [2024-06-04 15:05:11,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:05:11,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:05:11,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:05:11,971 INFO L124 PetriNetUnfolderBase]: 388/688 cut-off events. [2024-06-04 15:05:11,971 INFO L125 PetriNetUnfolderBase]: For 44709/44709 co-relation queries the response was YES. [2024-06-04 15:05:11,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4275 conditions, 688 events. 388/688 cut-off events. For 44709/44709 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3005 event pairs, 57 based on Foata normal form. 2/688 useless extension candidates. Maximal degree in co-relation 4195. Up to 608 conditions per place. [2024-06-04 15:05:11,976 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 128 selfloop transitions, 24 changer transitions 0/154 dead transitions. [2024-06-04 15:05:11,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 154 transitions, 1471 flow [2024-06-04 15:05:11,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:05:11,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:05:11,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-04 15:05:11,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-04 15:05:11,978 INFO L175 Difference]: Start difference. First operand has 158 places, 129 transitions, 967 flow. Second operand 11 states and 130 transitions. [2024-06-04 15:05:11,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 154 transitions, 1471 flow [2024-06-04 15:05:12,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 154 transitions, 1398 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-04 15:05:12,055 INFO L231 Difference]: Finished difference. Result has 162 places, 131 transitions, 984 flow [2024-06-04 15:05:12,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=984, PETRI_PLACES=162, PETRI_TRANSITIONS=131} [2024-06-04 15:05:12,056 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 131 predicate places. [2024-06-04 15:05:12,056 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 131 transitions, 984 flow [2024-06-04 15:05:12,056 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) [2024-06-04 15:05:12,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:05:12,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:05:12,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-04 15:05:12,056 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)] === [2024-06-04 15:05:12,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:05:12,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1659644390, now seen corresponding path program 3 times [2024-06-04 15:05:12,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:05:12,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611834238] [2024-06-04 15:05:12,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:05:12,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:05:12,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:05:13,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:05:13,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:05:13,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611834238] [2024-06-04 15:05:13,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611834238] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:05:13,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:05:13,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:05:13,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911867115] [2024-06-04 15:05:13,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:05:13,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:05:13,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:05:13,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:05:13,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:05:13,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:05:13,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 131 transitions, 984 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) [2024-06-04 15:05:13,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:05:13,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:05:13,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:05:13,705 INFO L124 PetriNetUnfolderBase]: 429/763 cut-off events. [2024-06-04 15:05:13,706 INFO L125 PetriNetUnfolderBase]: For 49397/49397 co-relation queries the response was YES. [2024-06-04 15:05:13,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4619 conditions, 763 events. 429/763 cut-off events. For 49397/49397 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3423 event pairs, 76 based on Foata normal form. 4/765 useless extension candidates. Maximal degree in co-relation 4537. Up to 701 conditions per place. [2024-06-04 15:05:13,710 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 140 selfloop transitions, 28 changer transitions 0/170 dead transitions. [2024-06-04 15:05:13,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 170 transitions, 1569 flow [2024-06-04 15:05:13,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 15:05:13,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 15:05:13,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 134 transitions. [2024-06-04 15:05:13,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32211538461538464 [2024-06-04 15:05:13,712 INFO L175 Difference]: Start difference. First operand has 162 places, 131 transitions, 984 flow. Second operand 13 states and 134 transitions. [2024-06-04 15:05:13,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 170 transitions, 1569 flow [2024-06-04 15:05:13,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 170 transitions, 1511 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-04 15:05:13,794 INFO L231 Difference]: Finished difference. Result has 176 places, 155 transitions, 1279 flow [2024-06-04 15:05:13,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=951, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1279, PETRI_PLACES=176, PETRI_TRANSITIONS=155} [2024-06-04 15:05:13,795 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 145 predicate places. [2024-06-04 15:05:13,795 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 155 transitions, 1279 flow [2024-06-04 15:05:13,795 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) [2024-06-04 15:05:13,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:05:13,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:05:13,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-04 15:05:13,796 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)] === [2024-06-04 15:05:13,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:05:13,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1148855287, now seen corresponding path program 1 times [2024-06-04 15:05:13,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:05:13,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151752980] [2024-06-04 15:05:13,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:05:13,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:05:13,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:05:14,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:05:14,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:05:14,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151752980] [2024-06-04 15:05:14,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151752980] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:05:14,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:05:14,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:05:14,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490137802] [2024-06-04 15:05:14,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:05:14,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:05:14,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:05:14,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:05:14,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:05:14,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:05:14,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 155 transitions, 1279 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) [2024-06-04 15:05:14,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:05:14,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:05:14,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:05:15,260 INFO L124 PetriNetUnfolderBase]: 438/776 cut-off events. [2024-06-04 15:05:15,260 INFO L125 PetriNetUnfolderBase]: For 49582/49586 co-relation queries the response was YES. [2024-06-04 15:05:15,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4866 conditions, 776 events. 438/776 cut-off events. For 49582/49586 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3473 event pairs, 60 based on Foata normal form. 5/779 useless extension candidates. Maximal degree in co-relation 4774. Up to 651 conditions per place. [2024-06-04 15:05:15,266 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 130 selfloop transitions, 50 changer transitions 0/182 dead transitions. [2024-06-04 15:05:15,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 182 transitions, 1733 flow [2024-06-04 15:05:15,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 15:05:15,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 15:05:15,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 146 transitions. [2024-06-04 15:05:15,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35096153846153844 [2024-06-04 15:05:15,267 INFO L175 Difference]: Start difference. First operand has 176 places, 155 transitions, 1279 flow. Second operand 13 states and 146 transitions. [2024-06-04 15:05:15,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 182 transitions, 1733 flow [2024-06-04 15:05:15,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 182 transitions, 1706 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-04 15:05:15,361 INFO L231 Difference]: Finished difference. Result has 186 places, 158 transitions, 1400 flow [2024-06-04 15:05:15,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1252, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1400, PETRI_PLACES=186, PETRI_TRANSITIONS=158} [2024-06-04 15:05:15,362 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 155 predicate places. [2024-06-04 15:05:15,362 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 158 transitions, 1400 flow [2024-06-04 15:05:15,362 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) [2024-06-04 15:05:15,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:05:15,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:05:15,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-04 15:05:15,363 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)] === [2024-06-04 15:05:15,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:05:15,363 INFO L85 PathProgramCache]: Analyzing trace with hash 862314854, now seen corresponding path program 4 times [2024-06-04 15:05:15,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:05:15,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439114952] [2024-06-04 15:05:15,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:05:15,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:05:15,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:05:16,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:05:16,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:05:16,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439114952] [2024-06-04 15:05:16,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439114952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:05:16,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:05:16,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:05:16,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228220990] [2024-06-04 15:05:16,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:05:16,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:05:16,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:05:16,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:05:16,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:05:16,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:05:16,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 158 transitions, 1400 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) [2024-06-04 15:05:16,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:05:16,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:05:16,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:05:16,876 INFO L124 PetriNetUnfolderBase]: 442/784 cut-off events. [2024-06-04 15:05:16,876 INFO L125 PetriNetUnfolderBase]: For 49537/49541 co-relation queries the response was YES. [2024-06-04 15:05:16,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5076 conditions, 784 events. 442/784 cut-off events. For 49537/49541 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3540 event pairs, 60 based on Foata normal form. 4/786 useless extension candidates. Maximal degree in co-relation 4983. Up to 684 conditions per place. [2024-06-04 15:05:16,881 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 142 selfloop transitions, 33 changer transitions 0/177 dead transitions. [2024-06-04 15:05:16,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 177 transitions, 1924 flow [2024-06-04 15:05:16,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:05:16,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:05:16,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-04 15:05:16,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-04 15:05:16,896 INFO L175 Difference]: Start difference. First operand has 186 places, 158 transitions, 1400 flow. Second operand 10 states and 116 transitions. [2024-06-04 15:05:16,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 177 transitions, 1924 flow [2024-06-04 15:05:17,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 177 transitions, 1810 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-04 15:05:17,010 INFO L231 Difference]: Finished difference. Result has 185 places, 159 transitions, 1368 flow [2024-06-04 15:05:17,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1286, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1368, PETRI_PLACES=185, PETRI_TRANSITIONS=159} [2024-06-04 15:05:17,011 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 154 predicate places. [2024-06-04 15:05:17,011 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 159 transitions, 1368 flow [2024-06-04 15:05:17,011 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) [2024-06-04 15:05:17,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:05:17,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:05:17,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-04 15:05:17,011 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)] === [2024-06-04 15:05:17,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:05:17,012 INFO L85 PathProgramCache]: Analyzing trace with hash 846033213, now seen corresponding path program 2 times [2024-06-04 15:05:17,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:05:17,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954850139] [2024-06-04 15:05:17,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:05:17,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:05:17,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:05:17,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:05:17,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:05:17,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954850139] [2024-06-04 15:05:17,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954850139] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:05:17,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:05:17,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:05:17,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542513451] [2024-06-04 15:05:17,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:05:17,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:05:17,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:05:17,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:05:17,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:05:17,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:05:17,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 159 transitions, 1368 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) [2024-06-04 15:05:17,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:05:17,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:05:17,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:05:18,003 INFO L124 PetriNetUnfolderBase]: 453/803 cut-off events. [2024-06-04 15:05:18,004 INFO L125 PetriNetUnfolderBase]: For 51326/51326 co-relation queries the response was YES. [2024-06-04 15:05:18,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5191 conditions, 803 events. 453/803 cut-off events. For 51326/51326 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3671 event pairs, 54 based on Foata normal form. 1/802 useless extension candidates. Maximal degree in co-relation 5097. Up to 637 conditions per place. [2024-06-04 15:05:18,013 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 142 selfloop transitions, 51 changer transitions 0/195 dead transitions. [2024-06-04 15:05:18,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 195 transitions, 2056 flow [2024-06-04 15:05:18,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:05:18,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:05:18,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-04 15:05:18,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-04 15:05:18,018 INFO L175 Difference]: Start difference. First operand has 185 places, 159 transitions, 1368 flow. Second operand 10 states and 124 transitions. [2024-06-04 15:05:18,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 195 transitions, 2056 flow [2024-06-04 15:05:18,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 195 transitions, 1947 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-04 15:05:18,135 INFO L231 Difference]: Finished difference. Result has 190 places, 179 transitions, 1573 flow [2024-06-04 15:05:18,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1259, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1573, PETRI_PLACES=190, PETRI_TRANSITIONS=179} [2024-06-04 15:05:18,136 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 159 predicate places. [2024-06-04 15:05:18,136 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 179 transitions, 1573 flow [2024-06-04 15:05:18,136 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) [2024-06-04 15:05:18,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:05:18,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:05:18,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-04 15:05:18,137 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:05:18,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:05:18,137 INFO L85 PathProgramCache]: Analyzing trace with hash 514605916, now seen corresponding path program 5 times [2024-06-04 15:05:18,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:05:18,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243110345] [2024-06-04 15:05:18,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:05:18,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:05:18,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:05:18,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:05:18,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:05:18,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243110345] [2024-06-04 15:05:18,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243110345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:05:18,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:05:18,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:05:18,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555326584] [2024-06-04 15:05:18,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:05:18,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:05:18,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:05:18,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:05:18,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:05:19,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:05:19,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 179 transitions, 1573 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) [2024-06-04 15:05:19,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:05:19,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:05:19,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:05:19,416 INFO L124 PetriNetUnfolderBase]: 457/811 cut-off events. [2024-06-04 15:05:19,416 INFO L125 PetriNetUnfolderBase]: For 55211/55211 co-relation queries the response was YES. [2024-06-04 15:05:19,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5393 conditions, 811 events. 457/811 cut-off events. For 55211/55211 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3707 event pairs, 65 based on Foata normal form. 2/811 useless extension candidates. Maximal degree in co-relation 5295. Up to 699 conditions per place. [2024-06-04 15:05:19,423 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 146 selfloop transitions, 46 changer transitions 0/194 dead transitions. [2024-06-04 15:05:19,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 194 transitions, 2009 flow [2024-06-04 15:05:19,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:05:19,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:05:19,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-04 15:05:19,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-04 15:05:19,424 INFO L175 Difference]: Start difference. First operand has 190 places, 179 transitions, 1573 flow. Second operand 11 states and 127 transitions. [2024-06-04 15:05:19,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 194 transitions, 2009 flow [2024-06-04 15:05:19,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 194 transitions, 1955 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-04 15:05:19,549 INFO L231 Difference]: Finished difference. Result has 198 places, 180 transitions, 1636 flow [2024-06-04 15:05:19,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1519, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1636, PETRI_PLACES=198, PETRI_TRANSITIONS=180} [2024-06-04 15:05:19,549 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 167 predicate places. [2024-06-04 15:05:19,549 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 180 transitions, 1636 flow [2024-06-04 15:05:19,550 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) [2024-06-04 15:05:19,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:05:19,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:05:19,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-04 15:05:19,550 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:05:19,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:05:19,551 INFO L85 PathProgramCache]: Analyzing trace with hash 520319991, now seen corresponding path program 3 times [2024-06-04 15:05:19,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:05:19,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383067079] [2024-06-04 15:05:19,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:05:19,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:05:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:05:20,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:05:20,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:05:20,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383067079] [2024-06-04 15:05:20,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383067079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:05:20,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:05:20,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:05:20,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663832267] [2024-06-04 15:05:20,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:05:20,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:05:20,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:05:20,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:05:20,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:05:20,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:05:20,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 180 transitions, 1636 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) [2024-06-04 15:05:20,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:05:20,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:05:20,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:05:20,878 INFO L124 PetriNetUnfolderBase]: 466/826 cut-off events. [2024-06-04 15:05:20,879 INFO L125 PetriNetUnfolderBase]: For 58862/58862 co-relation queries the response was YES. [2024-06-04 15:05:20,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5512 conditions, 826 events. 466/826 cut-off events. For 58862/58862 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3780 event pairs, 64 based on Foata normal form. 3/827 useless extension candidates. Maximal degree in co-relation 5413. Up to 576 conditions per place. [2024-06-04 15:05:20,886 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 125 selfloop transitions, 74 changer transitions 0/201 dead transitions. [2024-06-04 15:05:20,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 201 transitions, 2129 flow [2024-06-04 15:05:20,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:05:20,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:05:20,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-04 15:05:20,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-04 15:05:20,887 INFO L175 Difference]: Start difference. First operand has 198 places, 180 transitions, 1636 flow. Second operand 10 states and 127 transitions. [2024-06-04 15:05:20,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 201 transitions, 2129 flow [2024-06-04 15:05:21,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 201 transitions, 2024 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-04 15:05:21,072 INFO L231 Difference]: Finished difference. Result has 199 places, 184 transitions, 1747 flow [2024-06-04 15:05:21,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1531, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1747, PETRI_PLACES=199, PETRI_TRANSITIONS=184} [2024-06-04 15:05:21,073 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 168 predicate places. [2024-06-04 15:05:21,073 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 184 transitions, 1747 flow [2024-06-04 15:05:21,074 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) [2024-06-04 15:05:21,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:05:21,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:05:21,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-04 15:05:21,074 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:05:21,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:05:21,075 INFO L85 PathProgramCache]: Analyzing trace with hash 846182943, now seen corresponding path program 4 times [2024-06-04 15:05:21,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:05:21,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515243247] [2024-06-04 15:05:21,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:05:21,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:05:21,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:05:21,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:05:21,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:05:21,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515243247] [2024-06-04 15:05:21,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515243247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:05:21,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:05:21,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:05:21,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037316660] [2024-06-04 15:05:21,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:05:21,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:05:21,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:05:21,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:05:21,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:05:22,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:05:22,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 184 transitions, 1747 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) [2024-06-04 15:05:22,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:05:22,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:05:22,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:05:22,393 INFO L124 PetriNetUnfolderBase]: 475/841 cut-off events. [2024-06-04 15:05:22,394 INFO L125 PetriNetUnfolderBase]: For 61065/61065 co-relation queries the response was YES. [2024-06-04 15:05:22,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5734 conditions, 841 events. 475/841 cut-off events. For 61065/61065 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3887 event pairs, 62 based on Foata normal form. 3/842 useless extension candidates. Maximal degree in co-relation 5634. Up to 591 conditions per place. [2024-06-04 15:05:22,400 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 135 selfloop transitions, 69 changer transitions 0/206 dead transitions. [2024-06-04 15:05:22,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 206 transitions, 2260 flow [2024-06-04 15:05:22,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:05:22,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:05:22,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-04 15:05:22,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-04 15:05:22,401 INFO L175 Difference]: Start difference. First operand has 199 places, 184 transitions, 1747 flow. Second operand 10 states and 131 transitions. [2024-06-04 15:05:22,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 206 transitions, 2260 flow [2024-06-04 15:05:22,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 206 transitions, 2080 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-04 15:05:22,584 INFO L231 Difference]: Finished difference. Result has 201 places, 188 transitions, 1781 flow [2024-06-04 15:05:22,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1567, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1781, PETRI_PLACES=201, PETRI_TRANSITIONS=188} [2024-06-04 15:05:22,584 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 170 predicate places. [2024-06-04 15:05:22,585 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 188 transitions, 1781 flow [2024-06-04 15:05:22,585 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) [2024-06-04 15:05:22,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:05:22,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:05:22,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-04 15:05:22,585 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:05:22,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:05:22,586 INFO L85 PathProgramCache]: Analyzing trace with hash 851545323, now seen corresponding path program 5 times [2024-06-04 15:05:22,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:05:22,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000755824] [2024-06-04 15:05:22,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:05:22,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:05:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:05:23,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:05:23,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:05:23,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000755824] [2024-06-04 15:05:23,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000755824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:05:23,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:05:23,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:05:23,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455273301] [2024-06-04 15:05:23,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:05:23,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:05:23,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:05:23,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:05:23,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:05:23,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:05:23,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 188 transitions, 1781 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) [2024-06-04 15:05:23,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:05:23,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:05:23,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:05:23,920 INFO L124 PetriNetUnfolderBase]: 484/856 cut-off events. [2024-06-04 15:05:23,920 INFO L125 PetriNetUnfolderBase]: For 63113/63113 co-relation queries the response was YES. [2024-06-04 15:05:23,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5860 conditions, 856 events. 484/856 cut-off events. For 63113/63113 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3977 event pairs, 64 based on Foata normal form. 3/857 useless extension candidates. Maximal degree in co-relation 5759. Up to 606 conditions per place. [2024-06-04 15:05:23,928 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 138 selfloop transitions, 71 changer transitions 0/211 dead transitions. [2024-06-04 15:05:23,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 211 transitions, 2317 flow [2024-06-04 15:05:23,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:05:23,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:05:23,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-04 15:05:23,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 15:05:23,929 INFO L175 Difference]: Start difference. First operand has 201 places, 188 transitions, 1781 flow. Second operand 10 states and 130 transitions. [2024-06-04 15:05:23,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 211 transitions, 2317 flow [2024-06-04 15:05:24,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 211 transitions, 2139 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-04 15:05:24,091 INFO L231 Difference]: Finished difference. Result has 203 places, 192 transitions, 1829 flow [2024-06-04 15:05:24,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1603, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1829, PETRI_PLACES=203, PETRI_TRANSITIONS=192} [2024-06-04 15:05:24,093 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 172 predicate places. [2024-06-04 15:05:24,093 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 192 transitions, 1829 flow [2024-06-04 15:05:24,093 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) [2024-06-04 15:05:24,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:05:24,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:05:24,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-04 15:05:24,093 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:05:24,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:05:24,094 INFO L85 PathProgramCache]: Analyzing trace with hash 846177363, now seen corresponding path program 6 times [2024-06-04 15:05:24,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:05:24,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775165784] [2024-06-04 15:05:24,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:05:24,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:05:24,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:05:24,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:05:24,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:05:24,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775165784] [2024-06-04 15:05:24,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775165784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:05:24,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:05:24,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:05:24,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877213353] [2024-06-04 15:05:24,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:05:24,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:05:24,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:05:24,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:05:24,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:05:24,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:05:24,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 192 transitions, 1829 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) [2024-06-04 15:05:24,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:05:24,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:05:24,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:05:25,293 INFO L124 PetriNetUnfolderBase]: 487/861 cut-off events. [2024-06-04 15:05:25,293 INFO L125 PetriNetUnfolderBase]: For 60972/60972 co-relation queries the response was YES. [2024-06-04 15:05:25,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5918 conditions, 861 events. 487/861 cut-off events. For 60972/60972 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4014 event pairs, 62 based on Foata normal form. 1/860 useless extension candidates. Maximal degree in co-relation 5816. Up to 605 conditions per place. [2024-06-04 15:05:25,301 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 138 selfloop transitions, 73 changer transitions 0/213 dead transitions. [2024-06-04 15:05:25,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 213 transitions, 2330 flow [2024-06-04 15:05:25,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:05:25,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:05:25,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-04 15:05:25,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-04 15:05:25,303 INFO L175 Difference]: Start difference. First operand has 203 places, 192 transitions, 1829 flow. Second operand 11 states and 140 transitions. [2024-06-04 15:05:25,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 213 transitions, 2330 flow [2024-06-04 15:05:25,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 213 transitions, 2140 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-04 15:05:25,498 INFO L231 Difference]: Finished difference. Result has 206 places, 194 transitions, 1832 flow [2024-06-04 15:05:25,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1639, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1832, PETRI_PLACES=206, PETRI_TRANSITIONS=194} [2024-06-04 15:05:25,498 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 175 predicate places. [2024-06-04 15:05:25,498 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 194 transitions, 1832 flow [2024-06-04 15:05:25,499 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) [2024-06-04 15:05:25,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:05:25,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:05:25,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-04 15:05:25,499 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:05:25,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:05:25,499 INFO L85 PathProgramCache]: Analyzing trace with hash 520112601, now seen corresponding path program 7 times [2024-06-04 15:05:25,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:05:25,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989917169] [2024-06-04 15:05:25,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:05:25,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:05:25,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:05:26,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:05:26,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:05:26,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989917169] [2024-06-04 15:05:26,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989917169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:05:26,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:05:26,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:05:26,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369950870] [2024-06-04 15:05:26,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:05:26,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:05:26,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:05:26,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:05:26,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:05:26,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:05:26,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 194 transitions, 1832 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) [2024-06-04 15:05:26,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:05:26,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:05:26,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:05:26,731 INFO L124 PetriNetUnfolderBase]: 485/858 cut-off events. [2024-06-04 15:05:26,731 INFO L125 PetriNetUnfolderBase]: For 60497/60497 co-relation queries the response was YES. [2024-06-04 15:05:26,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5818 conditions, 858 events. 485/858 cut-off events. For 60497/60497 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3993 event pairs, 62 based on Foata normal form. 1/857 useless extension candidates. Maximal degree in co-relation 5715. Up to 591 conditions per place. [2024-06-04 15:05:26,741 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 131 selfloop transitions, 78 changer transitions 0/211 dead transitions. [2024-06-04 15:05:26,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 211 transitions, 2293 flow [2024-06-04 15:05:26,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:05:26,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:05:26,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-04 15:05:26,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-04 15:05:26,742 INFO L175 Difference]: Start difference. First operand has 206 places, 194 transitions, 1832 flow. Second operand 10 states and 129 transitions. [2024-06-04 15:05:26,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 211 transitions, 2293 flow [2024-06-04 15:05:26,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 211 transitions, 2120 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-04 15:05:26,919 INFO L231 Difference]: Finished difference. Result has 206 places, 194 transitions, 1820 flow [2024-06-04 15:05:26,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1659, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1820, PETRI_PLACES=206, PETRI_TRANSITIONS=194} [2024-06-04 15:05:26,919 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 175 predicate places. [2024-06-04 15:05:26,919 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 194 transitions, 1820 flow [2024-06-04 15:05:26,920 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) [2024-06-04 15:05:26,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:05:26,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:05:26,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-04 15:05:26,920 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:05:26,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:05:26,920 INFO L85 PathProgramCache]: Analyzing trace with hash 2089941738, now seen corresponding path program 6 times [2024-06-04 15:05:26,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:05:26,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978700439] [2024-06-04 15:05:26,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:05:26,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:05:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:05:27,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:05:27,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:05:27,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978700439] [2024-06-04 15:05:27,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978700439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:05:27,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:05:27,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:05:27,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054998356] [2024-06-04 15:05:27,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:05:27,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:05:27,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:05:27,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:05:27,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:05:27,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:05:27,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 194 transitions, 1820 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) [2024-06-04 15:05:27,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:05:27,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:05:27,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:05:27,914 INFO L124 PetriNetUnfolderBase]: 489/866 cut-off events. [2024-06-04 15:05:27,915 INFO L125 PetriNetUnfolderBase]: For 64391/64391 co-relation queries the response was YES. [2024-06-04 15:05:27,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5885 conditions, 866 events. 489/866 cut-off events. For 64391/64391 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4040 event pairs, 71 based on Foata normal form. 2/866 useless extension candidates. Maximal degree in co-relation 5782. Up to 765 conditions per place. [2024-06-04 15:05:27,924 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 164 selfloop transitions, 42 changer transitions 0/208 dead transitions. [2024-06-04 15:05:27,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 208 transitions, 2284 flow [2024-06-04 15:05:27,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:05:27,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:05:27,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-04 15:05:27,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-04 15:05:27,925 INFO L175 Difference]: Start difference. First operand has 206 places, 194 transitions, 1820 flow. Second operand 10 states and 116 transitions. [2024-06-04 15:05:27,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 208 transitions, 2284 flow [2024-06-04 15:05:28,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 208 transitions, 2111 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-04 15:05:28,132 INFO L231 Difference]: Finished difference. Result has 208 places, 195 transitions, 1757 flow [2024-06-04 15:05:28,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1647, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1757, PETRI_PLACES=208, PETRI_TRANSITIONS=195} [2024-06-04 15:05:28,133 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 177 predicate places. [2024-06-04 15:05:28,133 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 195 transitions, 1757 flow [2024-06-04 15:05:28,133 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) [2024-06-04 15:05:28,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:05:28,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:05:28,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-04 15:05:28,133 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:05:28,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:05:28,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1000843004, now seen corresponding path program 7 times [2024-06-04 15:05:28,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:05:28,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085326612] [2024-06-04 15:05:28,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:05:28,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:05:28,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:05:29,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:05:29,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:05:29,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085326612] [2024-06-04 15:05:29,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085326612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:05:29,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:05:29,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:05:29,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079821395] [2024-06-04 15:05:29,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:05:29,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:05:29,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:05:29,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:05:29,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:05:29,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:05:29,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 195 transitions, 1757 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) [2024-06-04 15:05:29,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:05:29,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:05:29,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:05:29,378 INFO L124 PetriNetUnfolderBase]: 493/874 cut-off events. [2024-06-04 15:05:29,378 INFO L125 PetriNetUnfolderBase]: For 66298/66298 co-relation queries the response was YES. [2024-06-04 15:05:29,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5865 conditions, 874 events. 493/874 cut-off events. For 66298/66298 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4097 event pairs, 71 based on Foata normal form. 2/874 useless extension candidates. Maximal degree in co-relation 5761. Up to 742 conditions per place. [2024-06-04 15:05:29,384 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 161 selfloop transitions, 47 changer transitions 0/210 dead transitions. [2024-06-04 15:05:29,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 210 transitions, 2229 flow [2024-06-04 15:05:29,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:05:29,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:05:29,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-04 15:05:29,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-04 15:05:29,404 INFO L175 Difference]: Start difference. First operand has 208 places, 195 transitions, 1757 flow. Second operand 10 states and 119 transitions. [2024-06-04 15:05:29,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 210 transitions, 2229 flow [2024-06-04 15:05:29,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 210 transitions, 2129 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-04 15:05:29,620 INFO L231 Difference]: Finished difference. Result has 210 places, 196 transitions, 1779 flow [2024-06-04 15:05:29,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1657, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1779, PETRI_PLACES=210, PETRI_TRANSITIONS=196} [2024-06-04 15:05:29,621 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 179 predicate places. [2024-06-04 15:05:29,621 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 196 transitions, 1779 flow [2024-06-04 15:05:29,621 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) [2024-06-04 15:05:29,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:05:29,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:05:29,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-04 15:05:29,622 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:05:29,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:05:29,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1950868036, now seen corresponding path program 8 times [2024-06-04 15:05:29,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:05:29,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22999297] [2024-06-04 15:05:29,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:05:29,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:05:29,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:05:30,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:05:30,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:05:30,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22999297] [2024-06-04 15:05:30,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22999297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:05:30,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:05:30,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:05:30,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919871320] [2024-06-04 15:05:30,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:05:30,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:05:30,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:05:30,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:05:30,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:05:30,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:05:30,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 196 transitions, 1779 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) [2024-06-04 15:05:30,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:05:30,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:05:30,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:05:30,804 INFO L124 PetriNetUnfolderBase]: 497/883 cut-off events. [2024-06-04 15:05:30,805 INFO L125 PetriNetUnfolderBase]: For 68406/68406 co-relation queries the response was YES. [2024-06-04 15:05:30,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5946 conditions, 883 events. 497/883 cut-off events. For 68406/68406 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4156 event pairs, 87 based on Foata normal form. 2/883 useless extension candidates. Maximal degree in co-relation 5841. Up to 823 conditions per place. [2024-06-04 15:05:30,812 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 174 selfloop transitions, 31 changer transitions 0/207 dead transitions. [2024-06-04 15:05:30,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 207 transitions, 2235 flow [2024-06-04 15:05:30,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:05:30,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:05:30,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-04 15:05:30,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 15:05:30,814 INFO L175 Difference]: Start difference. First operand has 210 places, 196 transitions, 1779 flow. Second operand 10 states and 110 transitions. [2024-06-04 15:05:30,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 207 transitions, 2235 flow [2024-06-04 15:05:31,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 207 transitions, 2123 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-04 15:05:31,014 INFO L231 Difference]: Finished difference. Result has 212 places, 197 transitions, 1759 flow [2024-06-04 15:05:31,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1667, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1759, PETRI_PLACES=212, PETRI_TRANSITIONS=197} [2024-06-04 15:05:31,015 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 181 predicate places. [2024-06-04 15:05:31,015 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 197 transitions, 1759 flow [2024-06-04 15:05:31,015 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) [2024-06-04 15:05:31,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:05:31,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:05:31,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-04 15:05:31,016 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:05:31,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:05:31,016 INFO L85 PathProgramCache]: Analyzing trace with hash -743661251, now seen corresponding path program 8 times [2024-06-04 15:05:31,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:05:31,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004390022] [2024-06-04 15:05:31,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:05:31,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:05:31,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:05:31,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:05:31,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:05:31,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004390022] [2024-06-04 15:05:31,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004390022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:05:31,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:05:31,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:05:31,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906866827] [2024-06-04 15:05:31,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:05:31,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:05:31,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:05:31,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:05:31,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:05:31,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:05:31,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 197 transitions, 1759 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) [2024-06-04 15:05:31,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:05:31,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:05:31,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:05:32,120 INFO L124 PetriNetUnfolderBase]: 500/888 cut-off events. [2024-06-04 15:05:32,121 INFO L125 PetriNetUnfolderBase]: For 67884/67884 co-relation queries the response was YES. [2024-06-04 15:05:32,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5942 conditions, 888 events. 500/888 cut-off events. For 67884/67884 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4201 event pairs, 79 based on Foata normal form. 1/887 useless extension candidates. Maximal degree in co-relation 5836. Up to 781 conditions per place. [2024-06-04 15:05:32,128 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 175 selfloop transitions, 38 changer transitions 0/215 dead transitions. [2024-06-04 15:05:32,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 215 transitions, 2431 flow [2024-06-04 15:05:32,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:05:32,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:05:32,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-04 15:05:32,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-04 15:05:32,129 INFO L175 Difference]: Start difference. First operand has 212 places, 197 transitions, 1759 flow. Second operand 10 states and 115 transitions. [2024-06-04 15:05:32,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 215 transitions, 2431 flow [2024-06-04 15:05:32,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 215 transitions, 2349 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-04 15:05:32,319 INFO L231 Difference]: Finished difference. Result has 215 places, 205 transitions, 1864 flow [2024-06-04 15:05:32,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1677, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1864, PETRI_PLACES=215, PETRI_TRANSITIONS=205} [2024-06-04 15:05:32,321 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 184 predicate places. [2024-06-04 15:05:32,321 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 205 transitions, 1864 flow [2024-06-04 15:05:32,321 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) [2024-06-04 15:05:32,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:05:32,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:05:32,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-04 15:05:32,321 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:05:32,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:05:32,322 INFO L85 PathProgramCache]: Analyzing trace with hash 345641153, now seen corresponding path program 9 times [2024-06-04 15:05:32,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:05:32,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150379099] [2024-06-04 15:05:32,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:05:32,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:05:32,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:05:33,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:05:33,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:05:33,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150379099] [2024-06-04 15:05:33,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150379099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:05:33,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:05:33,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:05:33,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790061156] [2024-06-04 15:05:33,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:05:33,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:05:33,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:05:33,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:05:33,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:05:33,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:05:33,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 205 transitions, 1864 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) [2024-06-04 15:05:33,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:05:33,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:05:33,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:05:33,425 INFO L124 PetriNetUnfolderBase]: 509/903 cut-off events. [2024-06-04 15:05:33,425 INFO L125 PetriNetUnfolderBase]: For 74966/74966 co-relation queries the response was YES. [2024-06-04 15:05:33,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6135 conditions, 903 events. 509/903 cut-off events. For 74966/74966 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4284 event pairs, 79 based on Foata normal form. 3/904 useless extension candidates. Maximal degree in co-relation 6027. Up to 757 conditions per place. [2024-06-04 15:05:33,433 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 178 selfloop transitions, 45 changer transitions 0/225 dead transitions. [2024-06-04 15:05:33,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 225 transitions, 2440 flow [2024-06-04 15:05:33,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:05:33,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:05:33,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-04 15:05:33,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-04 15:05:33,434 INFO L175 Difference]: Start difference. First operand has 215 places, 205 transitions, 1864 flow. Second operand 10 states and 121 transitions. [2024-06-04 15:05:33,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 225 transitions, 2440 flow [2024-06-04 15:05:33,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 225 transitions, 2358 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-04 15:05:33,652 INFO L231 Difference]: Finished difference. Result has 220 places, 209 transitions, 1971 flow [2024-06-04 15:05:33,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1793, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1971, PETRI_PLACES=220, PETRI_TRANSITIONS=209} [2024-06-04 15:05:33,653 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 189 predicate places. [2024-06-04 15:05:33,653 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 209 transitions, 1971 flow [2024-06-04 15:05:33,653 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) [2024-06-04 15:05:33,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:05:33,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:05:33,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-04 15:05:33,653 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:05:33,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:05:33,654 INFO L85 PathProgramCache]: Analyzing trace with hash -743665126, now seen corresponding path program 9 times [2024-06-04 15:05:33,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:05:33,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550681963] [2024-06-04 15:05:33,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:05:33,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:05:33,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:05:34,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:05:34,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:05:34,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550681963] [2024-06-04 15:05:34,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550681963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:05:34,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:05:34,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:05:34,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893272389] [2024-06-04 15:05:34,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:05:34,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:05:34,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:05:34,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:05:34,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:05:34,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:05:34,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 209 transitions, 1971 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) [2024-06-04 15:05:34,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:05:34,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:05:34,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:05:34,880 INFO L124 PetriNetUnfolderBase]: 513/911 cut-off events. [2024-06-04 15:05:34,881 INFO L125 PetriNetUnfolderBase]: For 74673/74673 co-relation queries the response was YES. [2024-06-04 15:05:34,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6310 conditions, 911 events. 513/911 cut-off events. For 74673/74673 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4361 event pairs, 81 based on Foata normal form. 2/911 useless extension candidates. Maximal degree in co-relation 6200. Up to 824 conditions per place. [2024-06-04 15:05:34,888 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 187 selfloop transitions, 33 changer transitions 0/222 dead transitions. [2024-06-04 15:05:34,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 222 transitions, 2605 flow [2024-06-04 15:05:34,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:05:34,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:05:34,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-04 15:05:34,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-04 15:05:34,890 INFO L175 Difference]: Start difference. First operand has 220 places, 209 transitions, 1971 flow. Second operand 10 states and 112 transitions. [2024-06-04 15:05:34,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 222 transitions, 2605 flow [2024-06-04 15:05:35,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 222 transitions, 2463 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-04 15:05:35,087 INFO L231 Difference]: Finished difference. Result has 222 places, 210 transitions, 1925 flow [2024-06-04 15:05:35,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1829, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1925, PETRI_PLACES=222, PETRI_TRANSITIONS=210} [2024-06-04 15:05:35,087 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 191 predicate places. [2024-06-04 15:05:35,087 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 210 transitions, 1925 flow [2024-06-04 15:05:35,087 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) [2024-06-04 15:05:35,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:05:35,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:05:35,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-04 15:05:35,088 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:05:35,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:05:35,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1997241336, now seen corresponding path program 1 times [2024-06-04 15:05:35,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:05:35,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278946254] [2024-06-04 15:05:35,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:05:35,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:05:35,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:05:35,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:05:35,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:05:35,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278946254] [2024-06-04 15:05:35,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278946254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:05:35,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:05:35,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:05:35,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6985975] [2024-06-04 15:05:35,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:05:35,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:05:35,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:05:35,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:05:35,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:05:36,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:05:36,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 210 transitions, 1925 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) [2024-06-04 15:05:36,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:05:36,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:05:36,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:05:36,405 INFO L124 PetriNetUnfolderBase]: 509/905 cut-off events. [2024-06-04 15:05:36,405 INFO L125 PetriNetUnfolderBase]: For 71189/71189 co-relation queries the response was YES. [2024-06-04 15:05:36,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6060 conditions, 905 events. 509/905 cut-off events. For 71189/71189 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4314 event pairs, 78 based on Foata normal form. 2/905 useless extension candidates. Maximal degree in co-relation 5949. Up to 862 conditions per place. [2024-06-04 15:05:36,413 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 205 selfloop transitions, 17 changer transitions 0/224 dead transitions. [2024-06-04 15:05:36,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 224 transitions, 2431 flow [2024-06-04 15:05:36,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:05:36,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:05:36,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-04 15:05:36,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-04 15:05:36,414 INFO L175 Difference]: Start difference. First operand has 222 places, 210 transitions, 1925 flow. Second operand 10 states and 109 transitions. [2024-06-04 15:05:36,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 224 transitions, 2431 flow [2024-06-04 15:05:36,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 224 transitions, 2320 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-04 15:05:36,625 INFO L231 Difference]: Finished difference. Result has 224 places, 212 transitions, 1893 flow [2024-06-04 15:05:36,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1814, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1893, PETRI_PLACES=224, PETRI_TRANSITIONS=212} [2024-06-04 15:05:36,626 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 193 predicate places. [2024-06-04 15:05:36,626 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 212 transitions, 1893 flow [2024-06-04 15:05:36,626 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) [2024-06-04 15:05:36,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:05:36,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:05:36,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-04 15:05:36,627 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:05:36,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:05:36,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1354601659, now seen corresponding path program 10 times [2024-06-04 15:05:36,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:05:36,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645772041] [2024-06-04 15:05:36,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:05:36,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:05:36,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:05:37,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:05:37,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:05:37,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645772041] [2024-06-04 15:05:37,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645772041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:05:37,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:05:37,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:05:37,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577100936] [2024-06-04 15:05:37,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:05:37,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:05:37,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:05:37,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:05:37,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:05:37,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:05:37,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 212 transitions, 1893 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) [2024-06-04 15:05:37,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:05:37,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:05:37,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:05:37,958 INFO L124 PetriNetUnfolderBase]: 518/920 cut-off events. [2024-06-04 15:05:37,958 INFO L125 PetriNetUnfolderBase]: For 75608/75608 co-relation queries the response was YES. [2024-06-04 15:05:37,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6076 conditions, 920 events. 518/920 cut-off events. For 75608/75608 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4398 event pairs, 74 based on Foata normal form. 3/921 useless extension candidates. Maximal degree in co-relation 5965. Up to 774 conditions per place. [2024-06-04 15:05:37,966 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 179 selfloop transitions, 49 changer transitions 0/230 dead transitions. [2024-06-04 15:05:37,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 230 transitions, 2465 flow [2024-06-04 15:05:37,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:05:37,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:05:37,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-04 15:05:37,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 15:05:37,967 INFO L175 Difference]: Start difference. First operand has 224 places, 212 transitions, 1893 flow. Second operand 10 states and 120 transitions. [2024-06-04 15:05:37,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 230 transitions, 2465 flow [2024-06-04 15:05:38,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 230 transitions, 2324 flow, removed 22 selfloop flow, removed 11 redundant places. [2024-06-04 15:05:38,178 INFO L231 Difference]: Finished difference. Result has 223 places, 216 transitions, 1948 flow [2024-06-04 15:05:38,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1756, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1948, PETRI_PLACES=223, PETRI_TRANSITIONS=216} [2024-06-04 15:05:38,179 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 192 predicate places. [2024-06-04 15:05:38,179 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 216 transitions, 1948 flow [2024-06-04 15:05:38,179 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) [2024-06-04 15:05:38,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:05:38,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:05:38,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-04 15:05:38,179 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:05:38,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:05:38,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1354596079, now seen corresponding path program 11 times [2024-06-04 15:05:38,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:05:38,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221172622] [2024-06-04 15:05:38,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:05:38,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:05:38,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:05:39,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:05:39,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:05:39,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221172622] [2024-06-04 15:05:39,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221172622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:05:39,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:05:39,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:05:39,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709015341] [2024-06-04 15:05:39,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:05:39,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:05:39,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:05:39,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:05:39,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:05:39,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:05:39,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 216 transitions, 1948 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) [2024-06-04 15:05:39,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:05:39,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:05:39,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:05:39,590 INFO L124 PetriNetUnfolderBase]: 521/925 cut-off events. [2024-06-04 15:05:39,590 INFO L125 PetriNetUnfolderBase]: For 71934/71934 co-relation queries the response was YES. [2024-06-04 15:05:39,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6032 conditions, 925 events. 521/925 cut-off events. For 71934/71934 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4430 event pairs, 74 based on Foata normal form. 1/924 useless extension candidates. Maximal degree in co-relation 5923. Up to 773 conditions per place. [2024-06-04 15:05:39,598 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 178 selfloop transitions, 53 changer transitions 0/233 dead transitions. [2024-06-04 15:05:39,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 233 transitions, 2480 flow [2024-06-04 15:05:39,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:05:39,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:05:39,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-04 15:05:39,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-04 15:05:39,599 INFO L175 Difference]: Start difference. First operand has 223 places, 216 transitions, 1948 flow. Second operand 11 states and 129 transitions. [2024-06-04 15:05:39,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 233 transitions, 2480 flow [2024-06-04 15:05:39,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 233 transitions, 2324 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-04 15:05:39,787 INFO L231 Difference]: Finished difference. Result has 226 places, 218 transitions, 1947 flow [2024-06-04 15:05:39,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1792, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1947, PETRI_PLACES=226, PETRI_TRANSITIONS=218} [2024-06-04 15:05:39,788 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 195 predicate places. [2024-06-04 15:05:39,788 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 218 transitions, 1947 flow [2024-06-04 15:05:39,788 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) [2024-06-04 15:05:39,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:05:39,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:05:39,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-04 15:05:39,788 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:05:39,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:05:39,789 INFO L85 PathProgramCache]: Analyzing trace with hash -2006445763, now seen corresponding path program 12 times [2024-06-04 15:05:39,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:05:39,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053009068] [2024-06-04 15:05:39,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:05:39,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:05:39,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:05:40,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:05:40,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:05:40,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053009068] [2024-06-04 15:05:40,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053009068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:05:40,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:05:40,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:05:40,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555206527] [2024-06-04 15:05:40,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:05:40,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:05:40,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:05:40,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:05:40,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:05:40,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:05:40,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 218 transitions, 1947 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) [2024-06-04 15:05:40,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:05:40,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:05:40,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:05:40,939 INFO L124 PetriNetUnfolderBase]: 530/940 cut-off events. [2024-06-04 15:05:40,939 INFO L125 PetriNetUnfolderBase]: For 79600/79600 co-relation queries the response was YES. [2024-06-04 15:05:40,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6144 conditions, 940 events. 530/940 cut-off events. For 79600/79600 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4516 event pairs, 80 based on Foata normal form. 3/941 useless extension candidates. Maximal degree in co-relation 6034. Up to 886 conditions per place. [2024-06-04 15:05:40,949 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 213 selfloop transitions, 21 changer transitions 0/236 dead transitions. [2024-06-04 15:05:40,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 236 transitions, 2544 flow [2024-06-04 15:05:40,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:05:40,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:05:40,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-04 15:05:40,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-04 15:05:40,951 INFO L175 Difference]: Start difference. First operand has 226 places, 218 transitions, 1947 flow. Second operand 10 states and 112 transitions. [2024-06-04 15:05:40,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 236 transitions, 2544 flow [2024-06-04 15:05:41,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 236 transitions, 2425 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-04 15:05:41,204 INFO L231 Difference]: Finished difference. Result has 227 places, 222 transitions, 1976 flow [2024-06-04 15:05:41,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1828, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1976, PETRI_PLACES=227, PETRI_TRANSITIONS=222} [2024-06-04 15:05:41,205 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 196 predicate places. [2024-06-04 15:05:41,205 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 222 transitions, 1976 flow [2024-06-04 15:05:41,205 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) [2024-06-04 15:05:41,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:05:41,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:05:41,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-04 15:05:41,206 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:05:41,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:05:41,206 INFO L85 PathProgramCache]: Analyzing trace with hash -544215466, now seen corresponding path program 10 times [2024-06-04 15:05:41,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:05:41,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063160763] [2024-06-04 15:05:41,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:05:41,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:05:41,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:05:41,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:05:41,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:05:41,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063160763] [2024-06-04 15:05:41,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063160763] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:05:41,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:05:41,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:05:41,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483133048] [2024-06-04 15:05:41,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:05:41,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:05:41,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:05:41,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:05:41,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:05:42,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:05:42,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 222 transitions, 1976 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) [2024-06-04 15:05:42,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:05:42,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:05:42,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:05:42,332 INFO L124 PetriNetUnfolderBase]: 534/948 cut-off events. [2024-06-04 15:05:42,332 INFO L125 PetriNetUnfolderBase]: For 78733/78733 co-relation queries the response was YES. [2024-06-04 15:05:42,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6155 conditions, 948 events. 534/948 cut-off events. For 78733/78733 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4580 event pairs, 86 based on Foata normal form. 2/948 useless extension candidates. Maximal degree in co-relation 6044. Up to 915 conditions per place. [2024-06-04 15:05:42,339 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 215 selfloop transitions, 16 changer transitions 0/233 dead transitions. [2024-06-04 15:05:42,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 233 transitions, 2475 flow [2024-06-04 15:05:42,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:05:42,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:05:42,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-04 15:05:42,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-04 15:05:42,340 INFO L175 Difference]: Start difference. First operand has 227 places, 222 transitions, 1976 flow. Second operand 10 states and 106 transitions. [2024-06-04 15:05:42,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 233 transitions, 2475 flow [2024-06-04 15:05:42,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 233 transitions, 2363 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-06-04 15:05:42,568 INFO L231 Difference]: Finished difference. Result has 229 places, 223 transitions, 1917 flow [2024-06-04 15:05:42,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1864, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1917, PETRI_PLACES=229, PETRI_TRANSITIONS=223} [2024-06-04 15:05:42,568 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 198 predicate places. [2024-06-04 15:05:42,569 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 223 transitions, 1917 flow [2024-06-04 15:05:42,569 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) [2024-06-04 15:05:42,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:05:42,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:05:42,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-04 15:05:42,569 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:05:42,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:05:42,570 INFO L85 PathProgramCache]: Analyzing trace with hash 2032021023, now seen corresponding path program 13 times [2024-06-04 15:05:42,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:05:42,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444207700] [2024-06-04 15:05:42,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:05:42,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:05:42,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:05:43,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:05:43,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:05:43,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444207700] [2024-06-04 15:05:43,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444207700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:05:43,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:05:43,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:05:43,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844405981] [2024-06-04 15:05:43,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:05:43,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:05:43,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:05:43,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:05:43,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:05:43,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:05:43,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 223 transitions, 1917 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) [2024-06-04 15:05:43,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:05:43,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:05:43,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:05:43,776 INFO L124 PetriNetUnfolderBase]: 543/963 cut-off events. [2024-06-04 15:05:43,776 INFO L125 PetriNetUnfolderBase]: For 83780/83780 co-relation queries the response was YES. [2024-06-04 15:05:43,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6231 conditions, 963 events. 543/963 cut-off events. For 83780/83780 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4668 event pairs, 82 based on Foata normal form. 3/964 useless extension candidates. Maximal degree in co-relation 6119. Up to 872 conditions per place. [2024-06-04 15:05:43,783 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 213 selfloop transitions, 30 changer transitions 0/245 dead transitions. [2024-06-04 15:05:43,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 245 transitions, 2561 flow [2024-06-04 15:05:43,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:05:43,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:05:43,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-04 15:05:43,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-04 15:05:43,785 INFO L175 Difference]: Start difference. First operand has 229 places, 223 transitions, 1917 flow. Second operand 10 states and 118 transitions. [2024-06-04 15:05:43,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 245 transitions, 2561 flow [2024-06-04 15:05:44,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 245 transitions, 2519 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-04 15:05:44,019 INFO L231 Difference]: Finished difference. Result has 231 places, 227 transitions, 2049 flow [2024-06-04 15:05:44,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1875, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2049, PETRI_PLACES=231, PETRI_TRANSITIONS=227} [2024-06-04 15:05:44,020 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 200 predicate places. [2024-06-04 15:05:44,020 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 227 transitions, 2049 flow [2024-06-04 15:05:44,020 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) [2024-06-04 15:05:44,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:05:44,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:05:44,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-04 15:05:44,020 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:05:44,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:05:44,021 INFO L85 PathProgramCache]: Analyzing trace with hash 2031813633, now seen corresponding path program 14 times [2024-06-04 15:05:44,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:05:44,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784055130] [2024-06-04 15:05:44,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:05:44,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:05:44,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:05:44,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:05:44,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:05:44,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784055130] [2024-06-04 15:05:44,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784055130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:05:44,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:05:44,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:05:44,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471710540] [2024-06-04 15:05:44,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:05:44,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:05:44,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:05:44,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:05:44,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:05:44,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:05:44,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 227 transitions, 2049 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) [2024-06-04 15:05:44,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:05:44,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:05:44,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:05:45,222 INFO L124 PetriNetUnfolderBase]: 552/978 cut-off events. [2024-06-04 15:05:45,222 INFO L125 PetriNetUnfolderBase]: For 86592/86592 co-relation queries the response was YES. [2024-06-04 15:05:45,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6464 conditions, 978 events. 552/978 cut-off events. For 86592/86592 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4747 event pairs, 80 based on Foata normal form. 3/979 useless extension candidates. Maximal degree in co-relation 6351. Up to 860 conditions per place. [2024-06-04 15:05:45,231 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 205 selfloop transitions, 42 changer transitions 0/249 dead transitions. [2024-06-04 15:05:45,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 249 transitions, 2700 flow [2024-06-04 15:05:45,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:05:45,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:05:45,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-04 15:05:45,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-04 15:05:45,233 INFO L175 Difference]: Start difference. First operand has 231 places, 227 transitions, 2049 flow. Second operand 11 states and 129 transitions. [2024-06-04 15:05:45,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 249 transitions, 2700 flow [2024-06-04 15:05:45,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 249 transitions, 2562 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-04 15:05:45,514 INFO L231 Difference]: Finished difference. Result has 234 places, 231 transitions, 2118 flow [2024-06-04 15:05:45,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1911, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2118, PETRI_PLACES=234, PETRI_TRANSITIONS=231} [2024-06-04 15:05:45,515 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 203 predicate places. [2024-06-04 15:05:45,515 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 231 transitions, 2118 flow [2024-06-04 15:05:45,515 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) [2024-06-04 15:05:45,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:05:45,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:05:45,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-04 15:05:45,516 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:05:45,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:05:45,516 INFO L85 PathProgramCache]: Analyzing trace with hash -743517256, now seen corresponding path program 11 times [2024-06-04 15:05:45,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:05:45,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510943206] [2024-06-04 15:05:45,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:05:45,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:05:45,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:05:46,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:05:46,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:05:46,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510943206] [2024-06-04 15:05:46,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510943206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:05:46,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:05:46,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:05:46,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362302391] [2024-06-04 15:05:46,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:05:46,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:05:46,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:05:46,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:05:46,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:05:46,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:05:46,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 231 transitions, 2118 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) [2024-06-04 15:05:46,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:05:46,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:05:46,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:05:46,533 INFO L124 PetriNetUnfolderBase]: 556/986 cut-off events. [2024-06-04 15:05:46,533 INFO L125 PetriNetUnfolderBase]: For 85298/85298 co-relation queries the response was YES. [2024-06-04 15:05:46,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6499 conditions, 986 events. 556/986 cut-off events. For 85298/85298 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4816 event pairs, 90 based on Foata normal form. 2/986 useless extension candidates. Maximal degree in co-relation 6385. Up to 938 conditions per place. [2024-06-04 15:05:46,544 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 216 selfloop transitions, 24 changer transitions 0/242 dead transitions. [2024-06-04 15:05:46,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 242 transitions, 2637 flow [2024-06-04 15:05:46,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:05:46,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:05:46,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-04 15:05:46,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-04 15:05:46,545 INFO L175 Difference]: Start difference. First operand has 234 places, 231 transitions, 2118 flow. Second operand 10 states and 109 transitions. [2024-06-04 15:05:46,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 242 transitions, 2637 flow [2024-06-04 15:05:46,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 242 transitions, 2468 flow, removed 46 selfloop flow, removed 9 redundant places. [2024-06-04 15:05:46,847 INFO L231 Difference]: Finished difference. Result has 235 places, 232 transitions, 2020 flow [2024-06-04 15:05:46,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1949, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2020, PETRI_PLACES=235, PETRI_TRANSITIONS=232} [2024-06-04 15:05:46,847 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 204 predicate places. [2024-06-04 15:05:46,847 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 232 transitions, 2020 flow [2024-06-04 15:05:46,847 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) [2024-06-04 15:05:46,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:05:46,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:05:46,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-04 15:05:46,848 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:05:46,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:05:46,848 INFO L85 PathProgramCache]: Analyzing trace with hash -738149141, now seen corresponding path program 15 times [2024-06-04 15:05:46,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:05:46,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402671200] [2024-06-04 15:05:46,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:05:46,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:05:46,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:05:47,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:05:47,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:05:47,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402671200] [2024-06-04 15:05:47,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402671200] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:05:47,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:05:47,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:05:47,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728147064] [2024-06-04 15:05:47,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:05:47,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:05:47,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:05:47,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:05:47,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:05:47,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:05:47,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 232 transitions, 2020 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) [2024-06-04 15:05:47,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:05:47,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:05:47,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:05:47,878 INFO L124 PetriNetUnfolderBase]: 565/1001 cut-off events. [2024-06-04 15:05:47,879 INFO L125 PetriNetUnfolderBase]: For 90685/90685 co-relation queries the response was YES. [2024-06-04 15:05:47,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6541 conditions, 1001 events. 565/1001 cut-off events. For 90685/90685 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4930 event pairs, 78 based on Foata normal form. 3/1002 useless extension candidates. Maximal degree in co-relation 6426. Up to 855 conditions per place. [2024-06-04 15:05:47,887 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 208 selfloop transitions, 44 changer transitions 0/254 dead transitions. [2024-06-04 15:05:47,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 254 transitions, 2693 flow [2024-06-04 15:05:47,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:05:47,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:05:47,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-04 15:05:47,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-04 15:05:47,889 INFO L175 Difference]: Start difference. First operand has 235 places, 232 transitions, 2020 flow. Second operand 10 states and 124 transitions. [2024-06-04 15:05:47,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 254 transitions, 2693 flow [2024-06-04 15:05:48,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 254 transitions, 2633 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-04 15:05:48,176 INFO L231 Difference]: Finished difference. Result has 237 places, 236 transitions, 2178 flow [2024-06-04 15:05:48,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1960, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2178, PETRI_PLACES=237, PETRI_TRANSITIONS=236} [2024-06-04 15:05:48,177 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 206 predicate places. [2024-06-04 15:05:48,177 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 236 transitions, 2178 flow [2024-06-04 15:05:48,177 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) [2024-06-04 15:05:48,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:05:48,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:05:48,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-04 15:05:48,178 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:05:48,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:05:48,178 INFO L85 PathProgramCache]: Analyzing trace with hash -738154876, now seen corresponding path program 12 times [2024-06-04 15:05:48,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:05:48,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003184443] [2024-06-04 15:05:48,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:05:48,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:05:48,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:05:48,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:05:48,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:05:48,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003184443] [2024-06-04 15:05:48,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003184443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:05:48,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:05:48,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:05:48,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702512757] [2024-06-04 15:05:48,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:05:48,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:05:48,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:05:48,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:05:48,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:05:48,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:05:48,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 236 transitions, 2178 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) [2024-06-04 15:05:48,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:05:48,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:05:48,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:05:49,234 INFO L124 PetriNetUnfolderBase]: 562/996 cut-off events. [2024-06-04 15:05:49,234 INFO L125 PetriNetUnfolderBase]: For 83176/83176 co-relation queries the response was YES. [2024-06-04 15:05:49,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6444 conditions, 996 events. 562/996 cut-off events. For 83176/83176 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4876 event pairs, 91 based on Foata normal form. 2/996 useless extension candidates. Maximal degree in co-relation 6328. Up to 948 conditions per place. [2024-06-04 15:05:49,242 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 221 selfloop transitions, 23 changer transitions 0/246 dead transitions. [2024-06-04 15:05:49,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 246 transitions, 2688 flow [2024-06-04 15:05:49,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:05:49,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:05:49,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-04 15:05:49,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 15:05:49,243 INFO L175 Difference]: Start difference. First operand has 237 places, 236 transitions, 2178 flow. Second operand 10 states and 110 transitions. [2024-06-04 15:05:49,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 246 transitions, 2688 flow [2024-06-04 15:05:49,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 246 transitions, 2496 flow, removed 55 selfloop flow, removed 8 redundant places. [2024-06-04 15:05:49,522 INFO L231 Difference]: Finished difference. Result has 239 places, 236 transitions, 2036 flow [2024-06-04 15:05:49,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1986, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2036, PETRI_PLACES=239, PETRI_TRANSITIONS=236} [2024-06-04 15:05:49,523 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 208 predicate places. [2024-06-04 15:05:49,523 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 236 transitions, 2036 flow [2024-06-04 15:05:49,523 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) [2024-06-04 15:05:49,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:05:49,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:05:49,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-04 15:05:49,523 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:05:49,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:05:49,524 INFO L85 PathProgramCache]: Analyzing trace with hash -738154721, now seen corresponding path program 16 times [2024-06-04 15:05:49,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:05:49,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163926855] [2024-06-04 15:05:49,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:05:49,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:05:49,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:05:50,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:05:50,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:05:50,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163926855] [2024-06-04 15:05:50,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163926855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:05:50,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:05:50,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:05:50,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455903935] [2024-06-04 15:05:50,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:05:50,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:05:50,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:05:50,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:05:50,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:05:50,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:05:50,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 236 transitions, 2036 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) [2024-06-04 15:05:50,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:05:50,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:05:50,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:05:50,754 INFO L124 PetriNetUnfolderBase]: 560/993 cut-off events. [2024-06-04 15:05:50,754 INFO L125 PetriNetUnfolderBase]: For 77371/77371 co-relation queries the response was YES. [2024-06-04 15:05:50,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6161 conditions, 993 events. 560/993 cut-off events. For 77371/77371 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4882 event pairs, 77 based on Foata normal form. 1/992 useless extension candidates. Maximal degree in co-relation 6044. Up to 830 conditions per place. [2024-06-04 15:05:50,763 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 202 selfloop transitions, 52 changer transitions 0/256 dead transitions. [2024-06-04 15:05:50,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 256 transitions, 2603 flow [2024-06-04 15:05:50,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:05:50,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:05:50,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-04 15:05:50,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-04 15:05:50,764 INFO L175 Difference]: Start difference. First operand has 239 places, 236 transitions, 2036 flow. Second operand 11 states and 136 transitions. [2024-06-04 15:05:50,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 256 transitions, 2603 flow [2024-06-04 15:05:51,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 256 transitions, 2529 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-04 15:05:51,025 INFO L231 Difference]: Finished difference. Result has 241 places, 236 transitions, 2077 flow [2024-06-04 15:05:51,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1962, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2077, PETRI_PLACES=241, PETRI_TRANSITIONS=236} [2024-06-04 15:05:51,026 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 210 predicate places. [2024-06-04 15:05:51,026 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 236 transitions, 2077 flow [2024-06-04 15:05:51,026 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) [2024-06-04 15:05:51,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:05:51,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:05:51,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-04 15:05:51,028 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:05:51,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:05:51,028 INFO L85 PathProgramCache]: Analyzing trace with hash 149294584, now seen corresponding path program 13 times [2024-06-04 15:05:51,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:05:51,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504124951] [2024-06-04 15:05:51,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:05:51,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:05:51,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:05:51,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:05:51,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:05:51,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504124951] [2024-06-04 15:05:51,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504124951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:05:51,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:05:51,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:05:51,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499129584] [2024-06-04 15:05:51,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:05:51,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:05:51,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:05:51,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:05:51,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:05:52,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:05:52,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 236 transitions, 2077 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) [2024-06-04 15:05:52,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:05:52,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:05:52,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:05:52,541 INFO L124 PetriNetUnfolderBase]: 597/1057 cut-off events. [2024-06-04 15:05:52,541 INFO L125 PetriNetUnfolderBase]: For 89622/89626 co-relation queries the response was YES. [2024-06-04 15:05:52,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6565 conditions, 1057 events. 597/1057 cut-off events. For 89622/89626 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5271 event pairs, 74 based on Foata normal form. 6/1061 useless extension candidates. Maximal degree in co-relation 6447. Up to 967 conditions per place. [2024-06-04 15:05:52,551 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 236 selfloop transitions, 40 changer transitions 0/278 dead transitions. [2024-06-04 15:05:52,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 278 transitions, 2877 flow [2024-06-04 15:05:52,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-04 15:05:52,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-04 15:05:52,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 151 transitions. [2024-06-04 15:05:52,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33705357142857145 [2024-06-04 15:05:52,552 INFO L175 Difference]: Start difference. First operand has 241 places, 236 transitions, 2077 flow. Second operand 14 states and 151 transitions. [2024-06-04 15:05:52,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 278 transitions, 2877 flow [2024-06-04 15:05:52,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 278 transitions, 2736 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-04 15:05:52,923 INFO L231 Difference]: Finished difference. Result has 250 places, 257 transitions, 2277 flow [2024-06-04 15:05:52,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1936, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2277, PETRI_PLACES=250, PETRI_TRANSITIONS=257} [2024-06-04 15:05:52,924 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 219 predicate places. [2024-06-04 15:05:52,924 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 257 transitions, 2277 flow [2024-06-04 15:05:52,924 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) [2024-06-04 15:05:52,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:05:52,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:05:52,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-04 15:05:52,924 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:05:52,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:05:52,925 INFO L85 PathProgramCache]: Analyzing trace with hash 90817028, now seen corresponding path program 14 times [2024-06-04 15:05:52,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:05:52,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174333628] [2024-06-04 15:05:52,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:05:52,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:05:52,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:05:53,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:05:53,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:05:53,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174333628] [2024-06-04 15:05:53,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174333628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:05:53,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:05:53,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:05:53,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47068915] [2024-06-04 15:05:53,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:05:53,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:05:53,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:05:53,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:05:53,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:05:54,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:05:54,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 257 transitions, 2277 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) [2024-06-04 15:05:54,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:05:54,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:05:54,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:05:54,597 INFO L124 PetriNetUnfolderBase]: 608/1078 cut-off events. [2024-06-04 15:05:54,597 INFO L125 PetriNetUnfolderBase]: For 84818/84818 co-relation queries the response was YES. [2024-06-04 15:05:54,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6547 conditions, 1078 events. 608/1078 cut-off events. For 84818/84818 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5412 event pairs, 77 based on Foata normal form. 4/1080 useless extension candidates. Maximal degree in co-relation 6424. Up to 999 conditions per place. [2024-06-04 15:05:54,610 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 248 selfloop transitions, 35 changer transitions 0/285 dead transitions. [2024-06-04 15:05:54,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 285 transitions, 2992 flow [2024-06-04 15:05:54,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 15:05:54,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 15:05:54,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 141 transitions. [2024-06-04 15:05:54,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3389423076923077 [2024-06-04 15:05:54,612 INFO L175 Difference]: Start difference. First operand has 250 places, 257 transitions, 2277 flow. Second operand 13 states and 141 transitions. [2024-06-04 15:05:54,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 285 transitions, 2992 flow [2024-06-04 15:05:54,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 285 transitions, 2893 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-04 15:05:54,878 INFO L231 Difference]: Finished difference. Result has 263 places, 267 transitions, 2408 flow [2024-06-04 15:05:54,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2182, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2408, PETRI_PLACES=263, PETRI_TRANSITIONS=267} [2024-06-04 15:05:54,879 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 232 predicate places. [2024-06-04 15:05:54,879 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 267 transitions, 2408 flow [2024-06-04 15:05:54,879 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) [2024-06-04 15:05:54,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:05:54,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:05:54,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-04 15:05:54,880 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:05:54,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:05:54,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1811947272, now seen corresponding path program 15 times [2024-06-04 15:05:54,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:05:54,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005193683] [2024-06-04 15:05:54,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:05:54,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:05:54,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:05:55,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:05:55,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:05:55,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005193683] [2024-06-04 15:05:55,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005193683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:05:55,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:05:55,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:05:55,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789557856] [2024-06-04 15:05:55,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:05:55,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:05:55,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:05:55,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:05:55,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:05:55,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:05:55,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 267 transitions, 2408 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) [2024-06-04 15:05:55,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:05:55,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:05:55,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:05:56,156 INFO L124 PetriNetUnfolderBase]: 605/1074 cut-off events. [2024-06-04 15:05:56,157 INFO L125 PetriNetUnfolderBase]: For 72390/72390 co-relation queries the response was YES. [2024-06-04 15:05:56,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6405 conditions, 1074 events. 605/1074 cut-off events. For 72390/72390 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5377 event pairs, 74 based on Foata normal form. 2/1074 useless extension candidates. Maximal degree in co-relation 6276. Up to 924 conditions per place. [2024-06-04 15:05:56,179 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 222 selfloop transitions, 61 changer transitions 0/285 dead transitions. [2024-06-04 15:05:56,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 285 transitions, 3035 flow [2024-06-04 15:05:56,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:05:56,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:05:56,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-04 15:05:56,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-04 15:05:56,180 INFO L175 Difference]: Start difference. First operand has 263 places, 267 transitions, 2408 flow. Second operand 11 states and 128 transitions. [2024-06-04 15:05:56,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 285 transitions, 3035 flow [2024-06-04 15:05:56,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 285 transitions, 2892 flow, removed 42 selfloop flow, removed 9 redundant places. [2024-06-04 15:05:56,444 INFO L231 Difference]: Finished difference. Result has 266 places, 269 transitions, 2431 flow [2024-06-04 15:05:56,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2265, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2431, PETRI_PLACES=266, PETRI_TRANSITIONS=269} [2024-06-04 15:05:56,445 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 235 predicate places. [2024-06-04 15:05:56,445 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 269 transitions, 2431 flow [2024-06-04 15:05:56,445 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) [2024-06-04 15:05:56,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:05:56,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:05:56,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-04 15:05:56,446 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:05:56,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:05:56,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1196563825, now seen corresponding path program 1 times [2024-06-04 15:05:56,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:05:56,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844804199] [2024-06-04 15:05:56,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:05:56,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:05:56,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:05:57,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:05:57,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:05:57,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844804199] [2024-06-04 15:05:57,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844804199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:05:57,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:05:57,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:05:57,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80756177] [2024-06-04 15:05:57,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:05:57,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:05:57,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:05:57,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:05:57,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:05:57,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:05:57,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 269 transitions, 2431 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:05:57,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:05:57,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:05:57,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:05:57,966 INFO L124 PetriNetUnfolderBase]: 616/1094 cut-off events. [2024-06-04 15:05:57,966 INFO L125 PetriNetUnfolderBase]: For 81295/81295 co-relation queries the response was YES. [2024-06-04 15:05:57,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6654 conditions, 1094 events. 616/1094 cut-off events. For 81295/81295 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5517 event pairs, 57 based on Foata normal form. 2/1094 useless extension candidates. Maximal degree in co-relation 6526. Up to 753 conditions per place. [2024-06-04 15:05:57,977 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 239 selfloop transitions, 54 changer transitions 0/295 dead transitions. [2024-06-04 15:05:57,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 295 transitions, 3266 flow [2024-06-04 15:05:57,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:05:57,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:05:57,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-04 15:05:57,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-04 15:05:57,979 INFO L175 Difference]: Start difference. First operand has 266 places, 269 transitions, 2431 flow. Second operand 12 states and 141 transitions. [2024-06-04 15:05:57,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 295 transitions, 3266 flow [2024-06-04 15:05:58,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 295 transitions, 3058 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-04 15:05:58,263 INFO L231 Difference]: Finished difference. Result has 270 places, 273 transitions, 2414 flow [2024-06-04 15:05:58,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2225, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2414, PETRI_PLACES=270, PETRI_TRANSITIONS=273} [2024-06-04 15:05:58,263 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 239 predicate places. [2024-06-04 15:05:58,263 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 273 transitions, 2414 flow [2024-06-04 15:05:58,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:05:58,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:05:58,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:05:58,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-04 15:05:58,264 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:05:58,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:05:58,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1254656275, now seen corresponding path program 2 times [2024-06-04 15:05:58,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:05:58,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391582290] [2024-06-04 15:05:58,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:05:58,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:05:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:05:59,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:05:59,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:05:59,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391582290] [2024-06-04 15:05:59,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391582290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:05:59,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:05:59,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:05:59,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361400776] [2024-06-04 15:05:59,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:05:59,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:05:59,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:05:59,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:05:59,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:05:59,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:05:59,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 273 transitions, 2414 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:05:59,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:05:59,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:05:59,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:05:59,880 INFO L124 PetriNetUnfolderBase]: 656/1174 cut-off events. [2024-06-04 15:05:59,881 INFO L125 PetriNetUnfolderBase]: For 124716/124716 co-relation queries the response was YES. [2024-06-04 15:05:59,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8071 conditions, 1174 events. 656/1174 cut-off events. For 124716/124716 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5994 event pairs, 79 based on Foata normal form. 2/1174 useless extension candidates. Maximal degree in co-relation 7944. Up to 786 conditions per place. [2024-06-04 15:05:59,892 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 238 selfloop transitions, 62 changer transitions 0/302 dead transitions. [2024-06-04 15:05:59,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 302 transitions, 3336 flow [2024-06-04 15:05:59,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:05:59,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:05:59,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-04 15:05:59,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-04 15:05:59,894 INFO L175 Difference]: Start difference. First operand has 270 places, 273 transitions, 2414 flow. Second operand 12 states and 149 transitions. [2024-06-04 15:05:59,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 302 transitions, 3336 flow [2024-06-04 15:06:00,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 302 transitions, 3295 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-04 15:06:00,256 INFO L231 Difference]: Finished difference. Result has 276 places, 274 transitions, 2512 flow [2024-06-04 15:06:00,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2377, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2512, PETRI_PLACES=276, PETRI_TRANSITIONS=274} [2024-06-04 15:06:00,256 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 245 predicate places. [2024-06-04 15:06:00,256 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 274 transitions, 2512 flow [2024-06-04 15:06:00,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:00,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:06:00,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:06:00,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-04 15:06:00,257 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:06:00,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:06:00,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1254771595, now seen corresponding path program 3 times [2024-06-04 15:06:00,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:06:00,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185483538] [2024-06-04 15:06:00,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:06:00,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:06:00,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:06:01,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:06:01,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:06:01,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185483538] [2024-06-04 15:06:01,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185483538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:06:01,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:06:01,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:06:01,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011458523] [2024-06-04 15:06:01,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:06:01,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:06:01,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:06:01,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:06:01,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:06:01,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:06:01,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 274 transitions, 2512 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:01,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:06:01,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:06:01,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:06:01,625 INFO L124 PetriNetUnfolderBase]: 670/1200 cut-off events. [2024-06-04 15:06:01,625 INFO L125 PetriNetUnfolderBase]: For 135568/135568 co-relation queries the response was YES. [2024-06-04 15:06:01,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8476 conditions, 1200 events. 670/1200 cut-off events. For 135568/135568 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6208 event pairs, 93 based on Foata normal form. 2/1200 useless extension candidates. Maximal degree in co-relation 8347. Up to 987 conditions per place. [2024-06-04 15:06:01,635 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 231 selfloop transitions, 65 changer transitions 0/298 dead transitions. [2024-06-04 15:06:01,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 298 transitions, 3360 flow [2024-06-04 15:06:01,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:06:01,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:06:01,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-04 15:06:01,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-04 15:06:01,636 INFO L175 Difference]: Start difference. First operand has 276 places, 274 transitions, 2512 flow. Second operand 12 states and 141 transitions. [2024-06-04 15:06:01,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 298 transitions, 3360 flow [2024-06-04 15:06:02,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 298 transitions, 3256 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-04 15:06:02,076 INFO L231 Difference]: Finished difference. Result has 279 places, 278 transitions, 2581 flow [2024-06-04 15:06:02,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2413, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2581, PETRI_PLACES=279, PETRI_TRANSITIONS=278} [2024-06-04 15:06:02,076 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 248 predicate places. [2024-06-04 15:06:02,077 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 278 transitions, 2581 flow [2024-06-04 15:06:02,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:02,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:06:02,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:06:02,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-04 15:06:02,077 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:06:02,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:06:02,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1254776431, now seen corresponding path program 1 times [2024-06-04 15:06:02,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:06:02,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429187131] [2024-06-04 15:06:02,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:06:02,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:06:02,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:06:02,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:06:02,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:06:02,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429187131] [2024-06-04 15:06:02,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429187131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:06:02,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:06:02,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:06:02,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643291491] [2024-06-04 15:06:02,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:06:02,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:06:02,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:06:02,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:06:02,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:06:03,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:06:03,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 278 transitions, 2581 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:03,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:06:03,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:06:03,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:06:03,447 INFO L124 PetriNetUnfolderBase]: 686/1226 cut-off events. [2024-06-04 15:06:03,448 INFO L125 PetriNetUnfolderBase]: For 147819/147819 co-relation queries the response was YES. [2024-06-04 15:06:03,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9027 conditions, 1226 events. 686/1226 cut-off events. For 147819/147819 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6382 event pairs, 93 based on Foata normal form. 2/1226 useless extension candidates. Maximal degree in co-relation 8897. Up to 1037 conditions per place. [2024-06-04 15:06:03,459 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 232 selfloop transitions, 69 changer transitions 0/303 dead transitions. [2024-06-04 15:06:03,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 303 transitions, 3545 flow [2024-06-04 15:06:03,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:06:03,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:06:03,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-04 15:06:03,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 15:06:03,461 INFO L175 Difference]: Start difference. First operand has 279 places, 278 transitions, 2581 flow. Second operand 12 states and 144 transitions. [2024-06-04 15:06:03,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 303 transitions, 3545 flow [2024-06-04 15:06:03,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 303 transitions, 3460 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-04 15:06:03,883 INFO L231 Difference]: Finished difference. Result has 284 places, 282 transitions, 2779 flow [2024-06-04 15:06:03,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2496, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2779, PETRI_PLACES=284, PETRI_TRANSITIONS=282} [2024-06-04 15:06:03,883 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 253 predicate places. [2024-06-04 15:06:03,884 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 282 transitions, 2779 flow [2024-06-04 15:06:03,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:03,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:06:03,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:06:03,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-04 15:06:03,884 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:06:03,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:06:03,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1254776245, now seen corresponding path program 4 times [2024-06-04 15:06:03,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:06:03,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025670069] [2024-06-04 15:06:03,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:06:03,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:06:03,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:06:04,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:06:04,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:06:04,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025670069] [2024-06-04 15:06:04,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025670069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:06:04,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:06:04,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:06:04,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922269809] [2024-06-04 15:06:04,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:06:04,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:06:04,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:06:04,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:06:04,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:06:04,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:06:04,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 282 transitions, 2779 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:04,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:06:04,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:06:04,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:06:05,481 INFO L124 PetriNetUnfolderBase]: 671/1201 cut-off events. [2024-06-04 15:06:05,481 INFO L125 PetriNetUnfolderBase]: For 151325/151325 co-relation queries the response was YES. [2024-06-04 15:06:05,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7833 conditions, 1201 events. 671/1201 cut-off events. For 151325/151325 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6250 event pairs, 80 based on Foata normal form. 16/1215 useless extension candidates. Maximal degree in co-relation 7701. Up to 963 conditions per place. [2024-06-04 15:06:05,492 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 217 selfloop transitions, 79 changer transitions 12/310 dead transitions. [2024-06-04 15:06:05,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 310 transitions, 3546 flow [2024-06-04 15:06:05,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-04 15:06:05,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-04 15:06:05,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 160 transitions. [2024-06-04 15:06:05,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-06-04 15:06:05,493 INFO L175 Difference]: Start difference. First operand has 284 places, 282 transitions, 2779 flow. Second operand 14 states and 160 transitions. [2024-06-04 15:06:05,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 310 transitions, 3546 flow [2024-06-04 15:06:05,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 310 transitions, 3399 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-04 15:06:05,858 INFO L231 Difference]: Finished difference. Result has 290 places, 278 transitions, 2767 flow [2024-06-04 15:06:05,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2634, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2767, PETRI_PLACES=290, PETRI_TRANSITIONS=278} [2024-06-04 15:06:05,858 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 259 predicate places. [2024-06-04 15:06:05,858 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 278 transitions, 2767 flow [2024-06-04 15:06:05,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:05,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:06:05,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:06:05,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-04 15:06:05,859 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:06:05,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:06:05,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1226490271, now seen corresponding path program 5 times [2024-06-04 15:06:05,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:06:05,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338348734] [2024-06-04 15:06:05,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:06:05,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:06:05,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:06:06,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:06:06,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:06:06,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338348734] [2024-06-04 15:06:06,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338348734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:06:06,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:06:06,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:06:06,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034758459] [2024-06-04 15:06:06,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:06:06,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:06:06,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:06:06,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:06:06,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:06:06,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:06:06,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 278 transitions, 2767 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:06,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:06:06,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:06:06,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:06:07,384 INFO L124 PetriNetUnfolderBase]: 634/1130 cut-off events. [2024-06-04 15:06:07,385 INFO L125 PetriNetUnfolderBase]: For 91099/91099 co-relation queries the response was YES. [2024-06-04 15:06:07,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7316 conditions, 1130 events. 634/1130 cut-off events. For 91099/91099 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5806 event pairs, 78 based on Foata normal form. 2/1130 useless extension candidates. Maximal degree in co-relation 7182. Up to 978 conditions per place. [2024-06-04 15:06:07,398 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 247 selfloop transitions, 46 changer transitions 0/295 dead transitions. [2024-06-04 15:06:07,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 295 transitions, 3393 flow [2024-06-04 15:06:07,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:06:07,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:06:07,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-04 15:06:07,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 15:06:07,401 INFO L175 Difference]: Start difference. First operand has 290 places, 278 transitions, 2767 flow. Second operand 12 states and 132 transitions. [2024-06-04 15:06:07,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 295 transitions, 3393 flow [2024-06-04 15:06:07,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 295 transitions, 3158 flow, removed 2 selfloop flow, removed 15 redundant places. [2024-06-04 15:06:07,770 INFO L231 Difference]: Finished difference. Result has 287 places, 278 transitions, 2630 flow [2024-06-04 15:06:07,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2532, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2630, PETRI_PLACES=287, PETRI_TRANSITIONS=278} [2024-06-04 15:06:07,771 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 256 predicate places. [2024-06-04 15:06:07,771 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 278 transitions, 2630 flow [2024-06-04 15:06:07,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:07,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:06:07,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:06:07,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-04 15:06:07,772 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:06:07,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:06:07,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1331562055, now seen corresponding path program 2 times [2024-06-04 15:06:07,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:06:07,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824976090] [2024-06-04 15:06:07,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:06:07,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:06:07,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:06:08,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:06:08,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:06:08,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824976090] [2024-06-04 15:06:08,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824976090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:06:08,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:06:08,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:06:08,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669001985] [2024-06-04 15:06:08,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:06:08,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:06:08,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:06:08,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:06:08,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:06:09,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:06:09,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 278 transitions, 2630 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:09,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:06:09,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:06:09,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:06:09,506 INFO L124 PetriNetUnfolderBase]: 643/1145 cut-off events. [2024-06-04 15:06:09,507 INFO L125 PetriNetUnfolderBase]: For 93659/93659 co-relation queries the response was YES. [2024-06-04 15:06:09,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7298 conditions, 1145 events. 643/1145 cut-off events. For 93659/93659 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5915 event pairs, 81 based on Foata normal form. 2/1145 useless extension candidates. Maximal degree in co-relation 7164. Up to 1023 conditions per place. [2024-06-04 15:06:09,517 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 251 selfloop transitions, 46 changer transitions 0/299 dead transitions. [2024-06-04 15:06:09,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 299 transitions, 3532 flow [2024-06-04 15:06:09,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:06:09,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:06:09,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-04 15:06:09,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-04 15:06:09,518 INFO L175 Difference]: Start difference. First operand has 287 places, 278 transitions, 2630 flow. Second operand 11 states and 128 transitions. [2024-06-04 15:06:09,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 299 transitions, 3532 flow [2024-06-04 15:06:09,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 299 transitions, 3375 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 15:06:09,837 INFO L231 Difference]: Finished difference. Result has 288 places, 282 transitions, 2663 flow [2024-06-04 15:06:09,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2479, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2663, PETRI_PLACES=288, PETRI_TRANSITIONS=282} [2024-06-04 15:06:09,838 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 257 predicate places. [2024-06-04 15:06:09,838 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 282 transitions, 2663 flow [2024-06-04 15:06:09,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:09,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:06:09,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:06:09,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-04 15:06:09,839 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:06:09,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:06:09,842 INFO L85 PathProgramCache]: Analyzing trace with hash 198051011, now seen corresponding path program 3 times [2024-06-04 15:06:09,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:06:09,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338744881] [2024-06-04 15:06:09,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:06:09,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:06:09,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:06:10,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:06:10,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:06:10,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338744881] [2024-06-04 15:06:10,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338744881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:06:10,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:06:10,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:06:10,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855345368] [2024-06-04 15:06:10,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:06:10,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:06:10,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:06:10,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:06:10,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:06:10,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:06:10,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 282 transitions, 2663 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:10,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:06:10,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:06:10,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:06:11,310 INFO L124 PetriNetUnfolderBase]: 652/1160 cut-off events. [2024-06-04 15:06:11,311 INFO L125 PetriNetUnfolderBase]: For 96502/96502 co-relation queries the response was YES. [2024-06-04 15:06:11,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7367 conditions, 1160 events. 652/1160 cut-off events. For 96502/96502 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5984 event pairs, 83 based on Foata normal form. 2/1160 useless extension candidates. Maximal degree in co-relation 7232. Up to 1062 conditions per place. [2024-06-04 15:06:11,322 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 261 selfloop transitions, 40 changer transitions 0/303 dead transitions. [2024-06-04 15:06:11,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 303 transitions, 3577 flow [2024-06-04 15:06:11,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:06:11,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:06:11,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-04 15:06:11,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-04 15:06:11,323 INFO L175 Difference]: Start difference. First operand has 288 places, 282 transitions, 2663 flow. Second operand 11 states and 126 transitions. [2024-06-04 15:06:11,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 303 transitions, 3577 flow [2024-06-04 15:06:11,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 303 transitions, 3385 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-04 15:06:11,616 INFO L231 Difference]: Finished difference. Result has 291 places, 286 transitions, 2651 flow [2024-06-04 15:06:11,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2477, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2651, PETRI_PLACES=291, PETRI_TRANSITIONS=286} [2024-06-04 15:06:11,617 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 260 predicate places. [2024-06-04 15:06:11,617 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 286 transitions, 2651 flow [2024-06-04 15:06:11,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:11,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:06:11,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:06:11,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-04 15:06:11,618 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:06:11,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:06:11,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1336203685, now seen corresponding path program 4 times [2024-06-04 15:06:11,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:06:11,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48055773] [2024-06-04 15:06:11,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:06:11,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:06:11,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:06:12,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:06:12,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:06:12,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48055773] [2024-06-04 15:06:12,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48055773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:06:12,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:06:12,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:06:12,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505905622] [2024-06-04 15:06:12,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:06:12,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:06:12,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:06:12,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:06:12,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:06:12,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:06:12,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 286 transitions, 2651 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:12,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:06:12,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:06:12,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:06:13,199 INFO L124 PetriNetUnfolderBase]: 648/1154 cut-off events. [2024-06-04 15:06:13,200 INFO L125 PetriNetUnfolderBase]: For 89011/89011 co-relation queries the response was YES. [2024-06-04 15:06:13,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7017 conditions, 1154 events. 648/1154 cut-off events. For 89011/89011 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5961 event pairs, 82 based on Foata normal form. 2/1154 useless extension candidates. Maximal degree in co-relation 6881. Up to 1081 conditions per place. [2024-06-04 15:06:13,210 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 265 selfloop transitions, 34 changer transitions 0/301 dead transitions. [2024-06-04 15:06:13,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 301 transitions, 3285 flow [2024-06-04 15:06:13,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:06:13,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:06:13,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-04 15:06:13,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 15:06:13,211 INFO L175 Difference]: Start difference. First operand has 291 places, 286 transitions, 2651 flow. Second operand 11 states and 121 transitions. [2024-06-04 15:06:13,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 301 transitions, 3285 flow [2024-06-04 15:06:13,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 301 transitions, 3096 flow, removed 54 selfloop flow, removed 8 redundant places. [2024-06-04 15:06:13,495 INFO L231 Difference]: Finished difference. Result has 294 places, 286 transitions, 2535 flow [2024-06-04 15:06:13,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2462, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2535, PETRI_PLACES=294, PETRI_TRANSITIONS=286} [2024-06-04 15:06:13,496 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 263 predicate places. [2024-06-04 15:06:13,496 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 286 transitions, 2535 flow [2024-06-04 15:06:13,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:13,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:06:13,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:06:13,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-04 15:06:13,496 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:06:13,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:06:13,497 INFO L85 PathProgramCache]: Analyzing trace with hash 627929159, now seen corresponding path program 5 times [2024-06-04 15:06:13,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:06:13,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093045760] [2024-06-04 15:06:13,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:06:13,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:06:13,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:06:14,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:06:14,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:06:14,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093045760] [2024-06-04 15:06:14,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093045760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:06:14,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:06:14,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:06:14,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731168136] [2024-06-04 15:06:14,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:06:14,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:06:14,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:06:14,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:06:14,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:06:14,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:06:14,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 286 transitions, 2535 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:14,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:06:14,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:06:14,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:06:14,726 INFO L124 PetriNetUnfolderBase]: 664/1180 cut-off events. [2024-06-04 15:06:14,726 INFO L125 PetriNetUnfolderBase]: For 99749/99749 co-relation queries the response was YES. [2024-06-04 15:06:14,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7355 conditions, 1180 events. 664/1180 cut-off events. For 99749/99749 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6128 event pairs, 61 based on Foata normal form. 2/1180 useless extension candidates. Maximal degree in co-relation 7218. Up to 869 conditions per place. [2024-06-04 15:06:14,738 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 220 selfloop transitions, 88 changer transitions 0/310 dead transitions. [2024-06-04 15:06:14,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 310 transitions, 3526 flow [2024-06-04 15:06:14,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:06:14,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:06:14,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-04 15:06:14,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-04 15:06:14,739 INFO L175 Difference]: Start difference. First operand has 294 places, 286 transitions, 2535 flow. Second operand 11 states and 142 transitions. [2024-06-04 15:06:14,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 310 transitions, 3526 flow [2024-06-04 15:06:15,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 310 transitions, 3354 flow, removed 5 selfloop flow, removed 14 redundant places. [2024-06-04 15:06:15,148 INFO L231 Difference]: Finished difference. Result has 291 places, 290 transitions, 2688 flow [2024-06-04 15:06:15,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2363, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2688, PETRI_PLACES=291, PETRI_TRANSITIONS=290} [2024-06-04 15:06:15,149 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 260 predicate places. [2024-06-04 15:06:15,149 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 290 transitions, 2688 flow [2024-06-04 15:06:15,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:15,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:06:15,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:06:15,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-04 15:06:15,149 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:06:15,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:06:15,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1056377837, now seen corresponding path program 6 times [2024-06-04 15:06:15,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:06:15,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198500866] [2024-06-04 15:06:15,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:06:15,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:06:15,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:06:15,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:06:15,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:06:15,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198500866] [2024-06-04 15:06:15,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198500866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:06:15,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:06:15,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:06:15,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223172402] [2024-06-04 15:06:15,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:06:15,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:06:15,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:06:15,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:06:15,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:06:15,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:06:15,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 290 transitions, 2688 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:15,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:06:15,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:06:15,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:06:16,356 INFO L124 PetriNetUnfolderBase]: 668/1188 cut-off events. [2024-06-04 15:06:16,357 INFO L125 PetriNetUnfolderBase]: For 102268/102268 co-relation queries the response was YES. [2024-06-04 15:06:16,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7429 conditions, 1188 events. 668/1188 cut-off events. For 102268/102268 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6190 event pairs, 83 based on Foata normal form. 2/1188 useless extension candidates. Maximal degree in co-relation 7294. Up to 1020 conditions per place. [2024-06-04 15:06:16,369 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 242 selfloop transitions, 61 changer transitions 0/305 dead transitions. [2024-06-04 15:06:16,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 305 transitions, 3339 flow [2024-06-04 15:06:16,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:06:16,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:06:16,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-04 15:06:16,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-04 15:06:16,370 INFO L175 Difference]: Start difference. First operand has 291 places, 290 transitions, 2688 flow. Second operand 11 states and 130 transitions. [2024-06-04 15:06:16,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 305 transitions, 3339 flow [2024-06-04 15:06:16,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 305 transitions, 3166 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-04 15:06:16,725 INFO L231 Difference]: Finished difference. Result has 295 places, 292 transitions, 2658 flow [2024-06-04 15:06:16,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2515, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2658, PETRI_PLACES=295, PETRI_TRANSITIONS=292} [2024-06-04 15:06:16,740 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 264 predicate places. [2024-06-04 15:06:16,740 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 292 transitions, 2658 flow [2024-06-04 15:06:16,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:16,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:06:16,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:06:16,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-04 15:06:16,741 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:06:16,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:06:16,741 INFO L85 PathProgramCache]: Analyzing trace with hash 461690543, now seen corresponding path program 7 times [2024-06-04 15:06:16,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:06:16,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691691433] [2024-06-04 15:06:16,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:06:16,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:06:16,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:06:17,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:06:17,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:06:17,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691691433] [2024-06-04 15:06:17,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691691433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:06:17,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:06:17,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:06:17,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103936117] [2024-06-04 15:06:17,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:06:17,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:06:17,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:06:17,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:06:17,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:06:17,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:06:17,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 292 transitions, 2658 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:17,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:06:17,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:06:17,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:06:18,078 INFO L124 PetriNetUnfolderBase]: 719/1289 cut-off events. [2024-06-04 15:06:18,078 INFO L125 PetriNetUnfolderBase]: For 166766/166766 co-relation queries the response was YES. [2024-06-04 15:06:18,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9283 conditions, 1289 events. 719/1289 cut-off events. For 166766/166766 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6826 event pairs, 78 based on Foata normal form. 2/1289 useless extension candidates. Maximal degree in co-relation 9146. Up to 923 conditions per place. [2024-06-04 15:06:18,091 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 241 selfloop transitions, 77 changer transitions 0/320 dead transitions. [2024-06-04 15:06:18,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 320 transitions, 3649 flow [2024-06-04 15:06:18,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:06:18,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:06:18,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 149 transitions. [2024-06-04 15:06:18,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42329545454545453 [2024-06-04 15:06:18,093 INFO L175 Difference]: Start difference. First operand has 295 places, 292 transitions, 2658 flow. Second operand 11 states and 149 transitions. [2024-06-04 15:06:18,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 320 transitions, 3649 flow [2024-06-04 15:06:18,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 320 transitions, 3551 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-04 15:06:18,668 INFO L231 Difference]: Finished difference. Result has 301 places, 295 transitions, 2757 flow [2024-06-04 15:06:18,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2560, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2757, PETRI_PLACES=301, PETRI_TRANSITIONS=295} [2024-06-04 15:06:18,669 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 270 predicate places. [2024-06-04 15:06:18,669 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 295 transitions, 2757 flow [2024-06-04 15:06:18,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:18,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:06:18,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:06:18,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-04 15:06:18,669 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:06:18,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:06:18,670 INFO L85 PathProgramCache]: Analyzing trace with hash 634358249, now seen corresponding path program 6 times [2024-06-04 15:06:18,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:06:18,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41198358] [2024-06-04 15:06:18,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:06:18,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:06:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:06:19,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:06:19,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:06:19,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41198358] [2024-06-04 15:06:19,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41198358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:06:19,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:06:19,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:06:19,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103007937] [2024-06-04 15:06:19,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:06:19,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:06:19,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:06:19,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:06:19,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:06:19,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:06:19,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 295 transitions, 2757 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:19,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:06:19,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:06:19,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:06:20,079 INFO L124 PetriNetUnfolderBase]: 725/1299 cut-off events. [2024-06-04 15:06:20,080 INFO L125 PetriNetUnfolderBase]: For 171089/171089 co-relation queries the response was YES. [2024-06-04 15:06:20,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9503 conditions, 1299 events. 725/1299 cut-off events. For 171089/171089 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6879 event pairs, 78 based on Foata normal form. 2/1299 useless extension candidates. Maximal degree in co-relation 9364. Up to 1016 conditions per place. [2024-06-04 15:06:20,094 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 229 selfloop transitions, 85 changer transitions 0/316 dead transitions. [2024-06-04 15:06:20,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 316 transitions, 3495 flow [2024-06-04 15:06:20,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:06:20,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:06:20,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-04 15:06:20,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-04 15:06:20,095 INFO L175 Difference]: Start difference. First operand has 301 places, 295 transitions, 2757 flow. Second operand 11 states and 139 transitions. [2024-06-04 15:06:20,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 316 transitions, 3495 flow [2024-06-04 15:06:20,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 316 transitions, 3390 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-04 15:06:20,795 INFO L231 Difference]: Finished difference. Result has 305 places, 297 transitions, 2895 flow [2024-06-04 15:06:20,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2652, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2895, PETRI_PLACES=305, PETRI_TRANSITIONS=297} [2024-06-04 15:06:20,797 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 274 predicate places. [2024-06-04 15:06:20,797 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 297 transitions, 2895 flow [2024-06-04 15:06:20,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:20,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:06:20,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:06:20,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-04 15:06:20,798 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:06:20,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:06:20,798 INFO L85 PathProgramCache]: Analyzing trace with hash 457226543, now seen corresponding path program 8 times [2024-06-04 15:06:20,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:06:20,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401305685] [2024-06-04 15:06:20,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:06:20,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:06:20,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:06:21,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:06:21,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:06:21,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401305685] [2024-06-04 15:06:21,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401305685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:06:21,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:06:21,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:06:21,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210686148] [2024-06-04 15:06:21,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:06:21,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:06:21,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:06:21,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:06:21,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:06:21,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:06:21,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 297 transitions, 2895 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:21,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:06:21,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:06:21,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:06:22,396 INFO L124 PetriNetUnfolderBase]: 710/1274 cut-off events. [2024-06-04 15:06:22,396 INFO L125 PetriNetUnfolderBase]: For 174320/174320 co-relation queries the response was YES. [2024-06-04 15:06:22,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8193 conditions, 1274 events. 710/1274 cut-off events. For 174320/174320 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6800 event pairs, 69 based on Foata normal form. 16/1288 useless extension candidates. Maximal degree in co-relation 8052. Up to 910 conditions per place. [2024-06-04 15:06:22,409 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 219 selfloop transitions, 91 changer transitions 12/324 dead transitions. [2024-06-04 15:06:22,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 324 transitions, 3691 flow [2024-06-04 15:06:22,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 15:06:22,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 15:06:22,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 167 transitions. [2024-06-04 15:06:22,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014423076923077 [2024-06-04 15:06:22,412 INFO L175 Difference]: Start difference. First operand has 305 places, 297 transitions, 2895 flow. Second operand 13 states and 167 transitions. [2024-06-04 15:06:22,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 324 transitions, 3691 flow [2024-06-04 15:06:22,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 324 transitions, 3466 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-04 15:06:22,829 INFO L231 Difference]: Finished difference. Result has 309 places, 293 transitions, 2831 flow [2024-06-04 15:06:22,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2670, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2831, PETRI_PLACES=309, PETRI_TRANSITIONS=293} [2024-06-04 15:06:22,830 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 278 predicate places. [2024-06-04 15:06:22,830 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 293 transitions, 2831 flow [2024-06-04 15:06:22,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:22,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:06:22,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:06:22,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-04 15:06:22,831 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:06:22,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:06:22,831 INFO L85 PathProgramCache]: Analyzing trace with hash 634604327, now seen corresponding path program 1 times [2024-06-04 15:06:22,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:06:22,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937903862] [2024-06-04 15:06:22,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:06:22,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:06:22,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:06:23,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:06:23,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:06:23,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937903862] [2024-06-04 15:06:23,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937903862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:06:23,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:06:23,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:06:23,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780838885] [2024-06-04 15:06:23,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:06:23,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:06:23,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:06:23,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:06:23,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:06:23,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:06:23,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 293 transitions, 2831 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:23,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:06:23,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:06:23,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:06:24,266 INFO L124 PetriNetUnfolderBase]: 680/1216 cut-off events. [2024-06-04 15:06:24,267 INFO L125 PetriNetUnfolderBase]: For 110177/110177 co-relation queries the response was YES. [2024-06-04 15:06:24,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7822 conditions, 1216 events. 680/1216 cut-off events. For 110177/110177 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6456 event pairs, 86 based on Foata normal form. 2/1216 useless extension candidates. Maximal degree in co-relation 7680. Up to 1125 conditions per place. [2024-06-04 15:06:24,279 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 272 selfloop transitions, 34 changer transitions 0/308 dead transitions. [2024-06-04 15:06:24,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 308 transitions, 3481 flow [2024-06-04 15:06:24,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:06:24,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:06:24,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-04 15:06:24,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-04 15:06:24,280 INFO L175 Difference]: Start difference. First operand has 309 places, 293 transitions, 2831 flow. Second operand 10 states and 118 transitions. [2024-06-04 15:06:24,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 308 transitions, 3481 flow [2024-06-04 15:06:24,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 308 transitions, 3258 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-04 15:06:24,679 INFO L231 Difference]: Finished difference. Result has 306 places, 294 transitions, 2688 flow [2024-06-04 15:06:24,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2608, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2688, PETRI_PLACES=306, PETRI_TRANSITIONS=294} [2024-06-04 15:06:24,679 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 275 predicate places. [2024-06-04 15:06:24,680 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 294 transitions, 2688 flow [2024-06-04 15:06:24,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:24,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:06:24,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:06:24,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-04 15:06:24,680 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:06:24,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:06:24,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1049948747, now seen corresponding path program 9 times [2024-06-04 15:06:24,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:06:24,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843896168] [2024-06-04 15:06:24,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:06:24,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:06:24,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:06:25,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:06:25,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:06:25,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843896168] [2024-06-04 15:06:25,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843896168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:06:25,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:06:25,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:06:25,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783333738] [2024-06-04 15:06:25,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:06:25,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:06:25,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:06:25,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:06:25,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:06:25,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:06:25,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 294 transitions, 2688 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:25,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:06:25,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:06:25,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:06:26,093 INFO L124 PetriNetUnfolderBase]: 704/1268 cut-off events. [2024-06-04 15:06:26,093 INFO L125 PetriNetUnfolderBase]: For 170522/170522 co-relation queries the response was YES. [2024-06-04 15:06:26,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7974 conditions, 1268 events. 704/1268 cut-off events. For 170522/170522 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6784 event pairs, 71 based on Foata normal form. 14/1280 useless extension candidates. Maximal degree in co-relation 7831. Up to 961 conditions per place. [2024-06-04 15:06:26,106 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 230 selfloop transitions, 73 changer transitions 13/318 dead transitions. [2024-06-04 15:06:26,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 318 transitions, 3471 flow [2024-06-04 15:06:26,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:06:26,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:06:26,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-04 15:06:26,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-04 15:06:26,108 INFO L175 Difference]: Start difference. First operand has 306 places, 294 transitions, 2688 flow. Second operand 11 states and 141 transitions. [2024-06-04 15:06:26,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 318 transitions, 3471 flow [2024-06-04 15:06:26,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 318 transitions, 3343 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 15:06:26,585 INFO L231 Difference]: Finished difference. Result has 306 places, 290 transitions, 2689 flow [2024-06-04 15:06:26,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2560, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2689, PETRI_PLACES=306, PETRI_TRANSITIONS=290} [2024-06-04 15:06:26,587 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 275 predicate places. [2024-06-04 15:06:26,587 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 290 transitions, 2689 flow [2024-06-04 15:06:26,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:26,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:06:26,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:06:26,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-04 15:06:26,587 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:06:26,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:06:26,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1227080081, now seen corresponding path program 7 times [2024-06-04 15:06:26,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:06:26,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876345376] [2024-06-04 15:06:26,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:06:26,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:06:26,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:06:27,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:06:27,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:06:27,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876345376] [2024-06-04 15:06:27,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876345376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:06:27,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:06:27,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:06:27,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591086130] [2024-06-04 15:06:27,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:06:27,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:06:27,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:06:27,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:06:27,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:06:27,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:06:27,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 290 transitions, 2689 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:27,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:06:27,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:06:27,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:06:28,037 INFO L124 PetriNetUnfolderBase]: 684/1230 cut-off events. [2024-06-04 15:06:28,037 INFO L125 PetriNetUnfolderBase]: For 125960/125960 co-relation queries the response was YES. [2024-06-04 15:06:28,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8184 conditions, 1230 events. 684/1230 cut-off events. For 125960/125960 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6555 event pairs, 66 based on Foata normal form. 2/1230 useless extension candidates. Maximal degree in co-relation 8042. Up to 898 conditions per place. [2024-06-04 15:06:28,055 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 221 selfloop transitions, 90 changer transitions 0/313 dead transitions. [2024-06-04 15:06:28,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 313 transitions, 3703 flow [2024-06-04 15:06:28,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:06:28,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:06:28,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-04 15:06:28,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-04 15:06:28,056 INFO L175 Difference]: Start difference. First operand has 306 places, 290 transitions, 2689 flow. Second operand 11 states and 144 transitions. [2024-06-04 15:06:28,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 313 transitions, 3703 flow [2024-06-04 15:06:28,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 313 transitions, 3545 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-04 15:06:28,501 INFO L231 Difference]: Finished difference. Result has 308 places, 294 transitions, 2868 flow [2024-06-04 15:06:28,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2531, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2868, PETRI_PLACES=308, PETRI_TRANSITIONS=294} [2024-06-04 15:06:28,502 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 277 predicate places. [2024-06-04 15:06:28,502 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 294 transitions, 2868 flow [2024-06-04 15:06:28,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:28,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:06:28,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:06:28,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-04 15:06:28,502 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:06:28,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:06:28,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1222438451, now seen corresponding path program 8 times [2024-06-04 15:06:28,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:06:28,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292734723] [2024-06-04 15:06:28,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:06:28,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:06:28,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:06:29,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:06:29,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:06:29,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292734723] [2024-06-04 15:06:29,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292734723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:06:29,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:06:29,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:06:29,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328267871] [2024-06-04 15:06:29,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:06:29,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:06:29,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:06:29,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:06:29,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:06:29,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:06:29,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 294 transitions, 2868 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:29,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:06:29,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:06:29,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:06:30,038 INFO L124 PetriNetUnfolderBase]: 690/1240 cut-off events. [2024-06-04 15:06:30,038 INFO L125 PetriNetUnfolderBase]: For 129661/129661 co-relation queries the response was YES. [2024-06-04 15:06:30,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8392 conditions, 1240 events. 690/1240 cut-off events. For 129661/129661 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6632 event pairs, 68 based on Foata normal form. 2/1240 useless extension candidates. Maximal degree in co-relation 8249. Up to 975 conditions per place. [2024-06-04 15:06:30,056 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 240 selfloop transitions, 71 changer transitions 0/313 dead transitions. [2024-06-04 15:06:30,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 313 transitions, 3606 flow [2024-06-04 15:06:30,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:06:30,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:06:30,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-04 15:06:30,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-04 15:06:30,057 INFO L175 Difference]: Start difference. First operand has 308 places, 294 transitions, 2868 flow. Second operand 11 states and 138 transitions. [2024-06-04 15:06:30,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 313 transitions, 3606 flow [2024-06-04 15:06:30,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 313 transitions, 3426 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-06-04 15:06:30,548 INFO L231 Difference]: Finished difference. Result has 312 places, 296 transitions, 2917 flow [2024-06-04 15:06:30,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2698, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2917, PETRI_PLACES=312, PETRI_TRANSITIONS=296} [2024-06-04 15:06:30,549 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 281 predicate places. [2024-06-04 15:06:30,549 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 296 transitions, 2917 flow [2024-06-04 15:06:30,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:30,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:06:30,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:06:30,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-04 15:06:30,549 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:06:30,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:06:30,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1056382487, now seen corresponding path program 10 times [2024-06-04 15:06:30,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:06:30,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8527582] [2024-06-04 15:06:30,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:06:30,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:06:30,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:06:31,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:06:31,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:06:31,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8527582] [2024-06-04 15:06:31,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8527582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:06:31,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:06:31,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:06:31,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994888964] [2024-06-04 15:06:31,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:06:31,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:06:31,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:06:31,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:06:31,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:06:31,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:06:31,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 296 transitions, 2917 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:31,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:06:31,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:06:31,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:06:31,923 INFO L124 PetriNetUnfolderBase]: 701/1261 cut-off events. [2024-06-04 15:06:31,924 INFO L125 PetriNetUnfolderBase]: For 141388/141388 co-relation queries the response was YES. [2024-06-04 15:06:31,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8726 conditions, 1261 events. 701/1261 cut-off events. For 141388/141388 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6792 event pairs, 85 based on Foata normal form. 2/1261 useless extension candidates. Maximal degree in co-relation 8581. Up to 1064 conditions per place. [2024-06-04 15:06:31,939 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 248 selfloop transitions, 63 changer transitions 0/313 dead transitions. [2024-06-04 15:06:31,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 313 transitions, 3815 flow [2024-06-04 15:06:31,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:06:31,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:06:31,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-04 15:06:31,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 15:06:31,941 INFO L175 Difference]: Start difference. First operand has 312 places, 296 transitions, 2917 flow. Second operand 11 states and 132 transitions. [2024-06-04 15:06:31,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 313 transitions, 3815 flow [2024-06-04 15:06:32,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 313 transitions, 3616 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-04 15:06:32,425 INFO L231 Difference]: Finished difference. Result has 314 places, 298 transitions, 2886 flow [2024-06-04 15:06:32,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2718, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2886, PETRI_PLACES=314, PETRI_TRANSITIONS=298} [2024-06-04 15:06:32,426 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 283 predicate places. [2024-06-04 15:06:32,426 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 298 transitions, 2886 flow [2024-06-04 15:06:32,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:32,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:06:32,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:06:32,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-04 15:06:32,427 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:06:32,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:06:32,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1056204671, now seen corresponding path program 9 times [2024-06-04 15:06:32,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:06:32,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497880119] [2024-06-04 15:06:32,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:06:32,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:06:32,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:06:33,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:06:33,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:06:33,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497880119] [2024-06-04 15:06:33,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497880119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:06:33,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:06:33,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:06:33,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274786118] [2024-06-04 15:06:33,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:06:33,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:06:33,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:06:33,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:06:33,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:06:33,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:06:33,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 298 transitions, 2886 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:33,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:06:33,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:06:33,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:06:33,930 INFO L124 PetriNetUnfolderBase]: 697/1255 cut-off events. [2024-06-04 15:06:33,931 INFO L125 PetriNetUnfolderBase]: For 132540/132540 co-relation queries the response was YES. [2024-06-04 15:06:33,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8394 conditions, 1255 events. 697/1255 cut-off events. For 132540/132540 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6730 event pairs, 70 based on Foata normal form. 2/1255 useless extension candidates. Maximal degree in co-relation 8248. Up to 982 conditions per place. [2024-06-04 15:06:33,944 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 238 selfloop transitions, 76 changer transitions 2/318 dead transitions. [2024-06-04 15:06:33,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 318 transitions, 3567 flow [2024-06-04 15:06:33,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:06:33,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:06:33,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-04 15:06:33,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-04 15:06:33,945 INFO L175 Difference]: Start difference. First operand has 314 places, 298 transitions, 2886 flow. Second operand 11 states and 141 transitions. [2024-06-04 15:06:33,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 318 transitions, 3567 flow [2024-06-04 15:06:34,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 318 transitions, 3417 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-04 15:06:34,344 INFO L231 Difference]: Finished difference. Result has 318 places, 298 transitions, 2894 flow [2024-06-04 15:06:34,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2737, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2894, PETRI_PLACES=318, PETRI_TRANSITIONS=298} [2024-06-04 15:06:34,344 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 287 predicate places. [2024-06-04 15:06:34,344 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 298 transitions, 2894 flow [2024-06-04 15:06:34,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:34,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:06:34,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:06:34,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-04 15:06:34,345 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:06:34,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:06:34,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1056204857, now seen corresponding path program 11 times [2024-06-04 15:06:34,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:06:34,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621569825] [2024-06-04 15:06:34,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:06:34,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:06:34,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:06:35,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:06:35,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:06:35,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621569825] [2024-06-04 15:06:35,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621569825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:06:35,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:06:35,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:06:35,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948812602] [2024-06-04 15:06:35,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:06:35,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:06:35,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:06:35,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:06:35,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:06:35,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:06:35,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 298 transitions, 2894 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:35,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:06:35,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:06:35,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:06:35,681 INFO L124 PetriNetUnfolderBase]: 714/1294 cut-off events. [2024-06-04 15:06:35,681 INFO L125 PetriNetUnfolderBase]: For 187996/187996 co-relation queries the response was YES. [2024-06-04 15:06:35,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8455 conditions, 1294 events. 714/1294 cut-off events. For 187996/187996 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7021 event pairs, 75 based on Foata normal form. 14/1306 useless extension candidates. Maximal degree in co-relation 8307. Up to 991 conditions per place. [2024-06-04 15:06:35,695 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 239 selfloop transitions, 67 changer transitions 14/322 dead transitions. [2024-06-04 15:06:35,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 322 transitions, 3672 flow [2024-06-04 15:06:35,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:06:35,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:06:35,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-04 15:06:35,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 15:06:35,697 INFO L175 Difference]: Start difference. First operand has 318 places, 298 transitions, 2894 flow. Second operand 11 states and 143 transitions. [2024-06-04 15:06:35,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 322 transitions, 3672 flow [2024-06-04 15:06:36,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 322 transitions, 3491 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-04 15:06:36,238 INFO L231 Difference]: Finished difference. Result has 319 places, 293 transitions, 2810 flow [2024-06-04 15:06:36,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2713, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2810, PETRI_PLACES=319, PETRI_TRANSITIONS=293} [2024-06-04 15:06:36,239 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 288 predicate places. [2024-06-04 15:06:36,239 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 293 transitions, 2810 flow [2024-06-04 15:06:36,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:36,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:06:36,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:06:36,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-04 15:06:36,239 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:06:36,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:06:36,240 INFO L85 PathProgramCache]: Analyzing trace with hash 457221893, now seen corresponding path program 12 times [2024-06-04 15:06:36,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:06:36,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416995042] [2024-06-04 15:06:36,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:06:36,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:06:36,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:06:37,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:06:37,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:06:37,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416995042] [2024-06-04 15:06:37,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416995042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:06:37,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:06:37,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:06:37,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77289627] [2024-06-04 15:06:37,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:06:37,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:06:37,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:06:37,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:06:37,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:06:37,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:06:37,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 293 transitions, 2810 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:37,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:06:37,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:06:37,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:06:37,763 INFO L124 PetriNetUnfolderBase]: 682/1230 cut-off events. [2024-06-04 15:06:37,763 INFO L125 PetriNetUnfolderBase]: For 125340/125340 co-relation queries the response was YES. [2024-06-04 15:06:37,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8092 conditions, 1230 events. 682/1230 cut-off events. For 125340/125340 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6625 event pairs, 69 based on Foata normal form. 2/1230 useless extension candidates. Maximal degree in co-relation 7943. Up to 936 conditions per place. [2024-06-04 15:06:37,777 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 226 selfloop transitions, 83 changer transitions 0/311 dead transitions. [2024-06-04 15:06:37,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 311 transitions, 3486 flow [2024-06-04 15:06:37,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:06:37,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:06:37,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-04 15:06:37,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-04 15:06:37,783 INFO L175 Difference]: Start difference. First operand has 319 places, 293 transitions, 2810 flow. Second operand 12 states and 146 transitions. [2024-06-04 15:06:37,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 311 transitions, 3486 flow [2024-06-04 15:06:38,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 311 transitions, 3319 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-04 15:06:38,415 INFO L231 Difference]: Finished difference. Result has 318 places, 294 transitions, 2837 flow [2024-06-04 15:06:38,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2643, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2837, PETRI_PLACES=318, PETRI_TRANSITIONS=294} [2024-06-04 15:06:38,416 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 287 predicate places. [2024-06-04 15:06:38,416 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 294 transitions, 2837 flow [2024-06-04 15:06:38,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:38,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:06:38,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:06:38,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-04 15:06:38,416 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:06:38,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:06:38,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1222611431, now seen corresponding path program 10 times [2024-06-04 15:06:38,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:06:38,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181274500] [2024-06-04 15:06:38,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:06:38,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:06:38,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:06:39,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:06:39,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:06:39,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181274500] [2024-06-04 15:06:39,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181274500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:06:39,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:06:39,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:06:39,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150415687] [2024-06-04 15:06:39,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:06:39,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:06:39,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:06:39,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:06:39,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:06:39,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:06:39,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 294 transitions, 2837 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:39,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:06:39,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:06:39,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:06:39,781 INFO L124 PetriNetUnfolderBase]: 678/1224 cut-off events. [2024-06-04 15:06:39,781 INFO L125 PetriNetUnfolderBase]: For 116310/116310 co-relation queries the response was YES. [2024-06-04 15:06:39,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7855 conditions, 1224 events. 678/1224 cut-off events. For 116310/116310 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6573 event pairs, 70 based on Foata normal form. 2/1224 useless extension candidates. Maximal degree in co-relation 7706. Up to 959 conditions per place. [2024-06-04 15:06:39,794 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 236 selfloop transitions, 73 changer transitions 0/311 dead transitions. [2024-06-04 15:06:39,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 311 transitions, 3493 flow [2024-06-04 15:06:39,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:06:39,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:06:39,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-04 15:06:39,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-04 15:06:39,795 INFO L175 Difference]: Start difference. First operand has 318 places, 294 transitions, 2837 flow. Second operand 11 states and 139 transitions. [2024-06-04 15:06:39,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 311 transitions, 3493 flow [2024-06-04 15:06:40,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 311 transitions, 3271 flow, removed 29 selfloop flow, removed 11 redundant places. [2024-06-04 15:06:40,323 INFO L231 Difference]: Finished difference. Result has 318 places, 294 transitions, 2766 flow [2024-06-04 15:06:40,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2615, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2766, PETRI_PLACES=318, PETRI_TRANSITIONS=294} [2024-06-04 15:06:40,324 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 287 predicate places. [2024-06-04 15:06:40,324 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 294 transitions, 2766 flow [2024-06-04 15:06:40,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:40,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:06:40,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:06:40,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-04 15:06:40,324 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:06:40,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:06:40,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1227200237, now seen corresponding path program 13 times [2024-06-04 15:06:40,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:06:40,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094176248] [2024-06-04 15:06:40,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:06:40,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:06:40,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:06:41,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:06:41,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:06:41,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094176248] [2024-06-04 15:06:41,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094176248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:06:41,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:06:41,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:06:41,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863559479] [2024-06-04 15:06:41,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:06:41,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:06:41,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:06:41,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:06:41,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:06:41,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:06:41,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 294 transitions, 2766 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:41,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:06:41,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:06:41,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:06:41,905 INFO L124 PetriNetUnfolderBase]: 682/1232 cut-off events. [2024-06-04 15:06:41,905 INFO L125 PetriNetUnfolderBase]: For 115673/115673 co-relation queries the response was YES. [2024-06-04 15:06:41,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7807 conditions, 1232 events. 682/1232 cut-off events. For 115673/115673 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6621 event pairs, 82 based on Foata normal form. 2/1232 useless extension candidates. Maximal degree in co-relation 7658. Up to 956 conditions per place. [2024-06-04 15:06:41,918 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 235 selfloop transitions, 73 changer transitions 0/310 dead transitions. [2024-06-04 15:06:41,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 310 transitions, 3438 flow [2024-06-04 15:06:41,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:06:41,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:06:41,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-04 15:06:41,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-04 15:06:41,919 INFO L175 Difference]: Start difference. First operand has 318 places, 294 transitions, 2766 flow. Second operand 11 states and 133 transitions. [2024-06-04 15:06:41,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 310 transitions, 3438 flow [2024-06-04 15:06:42,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 310 transitions, 3184 flow, removed 14 selfloop flow, removed 11 redundant places. [2024-06-04 15:06:42,389 INFO L231 Difference]: Finished difference. Result has 318 places, 295 transitions, 2686 flow [2024-06-04 15:06:42,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2512, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2686, PETRI_PLACES=318, PETRI_TRANSITIONS=295} [2024-06-04 15:06:42,389 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 287 predicate places. [2024-06-04 15:06:42,389 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 295 transitions, 2686 flow [2024-06-04 15:06:42,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:42,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:06:42,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:06:42,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-04 15:06:42,390 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:06:42,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:06:42,390 INFO L85 PathProgramCache]: Analyzing trace with hash 347367843, now seen corresponding path program 14 times [2024-06-04 15:06:42,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:06:42,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833727425] [2024-06-04 15:06:42,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:06:42,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:06:42,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:06:43,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:06:43,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:06:43,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833727425] [2024-06-04 15:06:43,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833727425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:06:43,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:06:43,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:06:43,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220754692] [2024-06-04 15:06:43,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:06:43,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:06:43,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:06:43,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:06:43,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:06:43,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:06:43,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 295 transitions, 2686 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:43,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:06:43,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:06:43,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:06:43,919 INFO L124 PetriNetUnfolderBase]: 729/1325 cut-off events. [2024-06-04 15:06:43,919 INFO L125 PetriNetUnfolderBase]: For 198358/198358 co-relation queries the response was YES. [2024-06-04 15:06:43,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9720 conditions, 1325 events. 729/1325 cut-off events. For 198358/198358 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 7133 event pairs, 104 based on Foata normal form. 2/1325 useless extension candidates. Maximal degree in co-relation 9571. Up to 981 conditions per place. [2024-06-04 15:06:43,933 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 236 selfloop transitions, 84 changer transitions 0/322 dead transitions. [2024-06-04 15:06:43,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 322 transitions, 3731 flow [2024-06-04 15:06:43,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:06:43,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:06:43,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-04 15:06:43,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-04 15:06:43,935 INFO L175 Difference]: Start difference. First operand has 318 places, 295 transitions, 2686 flow. Second operand 12 states and 151 transitions. [2024-06-04 15:06:43,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 322 transitions, 3731 flow [2024-06-04 15:06:44,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 322 transitions, 3565 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-04 15:06:44,765 INFO L231 Difference]: Finished difference. Result has 321 places, 297 transitions, 2745 flow [2024-06-04 15:06:44,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2522, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2745, PETRI_PLACES=321, PETRI_TRANSITIONS=297} [2024-06-04 15:06:44,765 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 290 predicate places. [2024-06-04 15:06:44,765 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 297 transitions, 2745 flow [2024-06-04 15:06:44,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:44,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:06:44,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:06:44,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-04 15:06:44,766 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:06:44,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:06:44,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1431610747, now seen corresponding path program 2 times [2024-06-04 15:06:44,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:06:44,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529569791] [2024-06-04 15:06:44,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:06:44,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:06:44,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:06:45,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:06:45,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:06:45,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529569791] [2024-06-04 15:06:45,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529569791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:06:45,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:06:45,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:06:45,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38883958] [2024-06-04 15:06:45,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:06:45,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:06:45,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:06:45,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:06:45,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:06:46,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:06:46,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 297 transitions, 2745 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:46,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:06:46,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:06:46,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:06:46,409 INFO L124 PetriNetUnfolderBase]: 733/1333 cut-off events. [2024-06-04 15:06:46,410 INFO L125 PetriNetUnfolderBase]: For 202040/202040 co-relation queries the response was YES. [2024-06-04 15:06:46,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9778 conditions, 1333 events. 733/1333 cut-off events. For 202040/202040 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7218 event pairs, 126 based on Foata normal form. 2/1333 useless extension candidates. Maximal degree in co-relation 9628. Up to 1285 conditions per place. [2024-06-04 15:06:46,425 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 290 selfloop transitions, 20 changer transitions 0/312 dead transitions. [2024-06-04 15:06:46,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 312 transitions, 3415 flow [2024-06-04 15:06:46,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:06:46,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:06:46,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-04 15:06:46,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-04 15:06:46,427 INFO L175 Difference]: Start difference. First operand has 321 places, 297 transitions, 2745 flow. Second operand 10 states and 111 transitions. [2024-06-04 15:06:46,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 312 transitions, 3415 flow [2024-06-04 15:06:47,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 312 transitions, 3275 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-04 15:06:47,367 INFO L231 Difference]: Finished difference. Result has 324 places, 299 transitions, 2672 flow [2024-06-04 15:06:47,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2605, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2672, PETRI_PLACES=324, PETRI_TRANSITIONS=299} [2024-06-04 15:06:47,367 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 293 predicate places. [2024-06-04 15:06:47,368 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 299 transitions, 2672 flow [2024-06-04 15:06:47,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:47,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:06:47,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:06:47,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-04 15:06:47,392 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:06:47,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:06:47,393 INFO L85 PathProgramCache]: Analyzing trace with hash -452870829, now seen corresponding path program 11 times [2024-06-04 15:06:47,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:06:47,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858441670] [2024-06-04 15:06:47,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:06:47,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:06:47,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:06:48,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:06:48,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:06:48,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858441670] [2024-06-04 15:06:48,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858441670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:06:48,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:06:48,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:06:48,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873520836] [2024-06-04 15:06:48,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:06:48,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:06:48,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:06:48,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:06:48,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:06:48,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:06:48,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 299 transitions, 2672 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:48,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:06:48,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:06:48,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:06:48,845 INFO L124 PetriNetUnfolderBase]: 739/1343 cut-off events. [2024-06-04 15:06:48,845 INFO L125 PetriNetUnfolderBase]: For 205928/205928 co-relation queries the response was YES. [2024-06-04 15:06:48,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9856 conditions, 1343 events. 739/1343 cut-off events. For 205928/205928 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7276 event pairs, 118 based on Foata normal form. 2/1343 useless extension candidates. Maximal degree in co-relation 9703. Up to 1224 conditions per place. [2024-06-04 15:06:48,860 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 283 selfloop transitions, 36 changer transitions 0/321 dead transitions. [2024-06-04 15:06:48,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 321 transitions, 3449 flow [2024-06-04 15:06:48,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:06:48,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:06:48,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-04 15:06:48,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-04 15:06:48,862 INFO L175 Difference]: Start difference. First operand has 324 places, 299 transitions, 2672 flow. Second operand 11 states and 130 transitions. [2024-06-04 15:06:48,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 321 transitions, 3449 flow [2024-06-04 15:06:49,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 321 transitions, 3405 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-04 15:06:49,756 INFO L231 Difference]: Finished difference. Result has 328 places, 301 transitions, 2783 flow [2024-06-04 15:06:49,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2628, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2783, PETRI_PLACES=328, PETRI_TRANSITIONS=301} [2024-06-04 15:06:49,756 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 297 predicate places. [2024-06-04 15:06:49,757 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 301 transitions, 2783 flow [2024-06-04 15:06:49,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:49,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:06:49,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:06:49,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-04 15:06:49,757 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:06:49,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:06:49,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1438112935, now seen corresponding path program 12 times [2024-06-04 15:06:49,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:06:49,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332380378] [2024-06-04 15:06:49,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:06:49,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:06:49,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:06:50,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:06:50,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:06:50,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332380378] [2024-06-04 15:06:50,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332380378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:06:50,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:06:50,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:06:50,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697266397] [2024-06-04 15:06:50,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:06:50,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:06:50,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:06:50,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:06:50,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:06:50,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:06:50,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 301 transitions, 2783 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:50,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:06:50,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:06:50,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:06:51,217 INFO L124 PetriNetUnfolderBase]: 748/1358 cut-off events. [2024-06-04 15:06:51,218 INFO L125 PetriNetUnfolderBase]: For 210457/210457 co-relation queries the response was YES. [2024-06-04 15:06:51,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10110 conditions, 1358 events. 748/1358 cut-off events. For 210457/210457 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7393 event pairs, 122 based on Foata normal form. 2/1358 useless extension candidates. Maximal degree in co-relation 9956. Up to 1261 conditions per place. [2024-06-04 15:06:51,233 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 287 selfloop transitions, 35 changer transitions 0/324 dead transitions. [2024-06-04 15:06:51,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 324 transitions, 3577 flow [2024-06-04 15:06:51,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:06:51,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:06:51,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-04 15:06:51,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-04 15:06:51,234 INFO L175 Difference]: Start difference. First operand has 328 places, 301 transitions, 2783 flow. Second operand 12 states and 135 transitions. [2024-06-04 15:06:51,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 324 transitions, 3577 flow [2024-06-04 15:06:52,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 324 transitions, 3438 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-04 15:06:52,662 INFO L231 Difference]: Finished difference. Result has 333 places, 306 transitions, 2837 flow [2024-06-04 15:06:52,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2644, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2837, PETRI_PLACES=333, PETRI_TRANSITIONS=306} [2024-06-04 15:06:52,663 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 302 predicate places. [2024-06-04 15:06:52,663 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 306 transitions, 2837 flow [2024-06-04 15:06:52,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:52,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:06:52,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:06:52,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-04 15:06:52,664 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:06:52,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:06:52,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1952451977, now seen corresponding path program 15 times [2024-06-04 15:06:52,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:06:52,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503328326] [2024-06-04 15:06:52,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:06:52,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:06:52,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:06:53,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:06:53,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:06:53,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503328326] [2024-06-04 15:06:53,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503328326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:06:53,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:06:53,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:06:53,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161380665] [2024-06-04 15:06:53,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:06:53,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:06:53,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:06:53,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:06:53,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:06:53,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:06:53,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 306 transitions, 2837 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:53,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:06:53,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:06:53,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:06:54,070 INFO L124 PetriNetUnfolderBase]: 736/1338 cut-off events. [2024-06-04 15:06:54,070 INFO L125 PetriNetUnfolderBase]: For 213210/213210 co-relation queries the response was YES. [2024-06-04 15:06:54,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8668 conditions, 1338 events. 736/1338 cut-off events. For 213210/213210 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7344 event pairs, 98 based on Foata normal form. 14/1350 useless extension candidates. Maximal degree in co-relation 8511. Up to 1134 conditions per place. [2024-06-04 15:06:54,085 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 268 selfloop transitions, 46 changer transitions 12/328 dead transitions. [2024-06-04 15:06:54,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 328 transitions, 3650 flow [2024-06-04 15:06:54,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:06:54,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:06:54,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-04 15:06:54,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-04 15:06:54,086 INFO L175 Difference]: Start difference. First operand has 333 places, 306 transitions, 2837 flow. Second operand 11 states and 134 transitions. [2024-06-04 15:06:54,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 328 transitions, 3650 flow [2024-06-04 15:06:54,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 328 transitions, 3515 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-06-04 15:06:54,703 INFO L231 Difference]: Finished difference. Result has 336 places, 303 transitions, 2783 flow [2024-06-04 15:06:54,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2702, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2783, PETRI_PLACES=336, PETRI_TRANSITIONS=303} [2024-06-04 15:06:54,703 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 305 predicate places. [2024-06-04 15:06:54,704 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 303 transitions, 2783 flow [2024-06-04 15:06:54,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:54,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:06:54,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:06:54,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-04 15:06:54,704 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:06:54,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:06:54,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1574019769, now seen corresponding path program 13 times [2024-06-04 15:06:54,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:06:54,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995931182] [2024-06-04 15:06:54,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:06:54,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:06:54,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:06:55,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:06:55,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:06:55,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995931182] [2024-06-04 15:06:55,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995931182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:06:55,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:06:55,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:06:55,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309602095] [2024-06-04 15:06:55,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:06:55,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:06:55,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:06:55,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:06:55,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:06:55,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:06:55,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 303 transitions, 2783 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:55,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:06:55,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:06:55,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:06:56,318 INFO L124 PetriNetUnfolderBase]: 710/1288 cut-off events. [2024-06-04 15:06:56,318 INFO L125 PetriNetUnfolderBase]: For 142624/142624 co-relation queries the response was YES. [2024-06-04 15:06:56,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8397 conditions, 1288 events. 710/1288 cut-off events. For 142624/142624 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7073 event pairs, 92 based on Foata normal form. 2/1288 useless extension candidates. Maximal degree in co-relation 8239. Up to 1144 conditions per place. [2024-06-04 15:06:56,332 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 269 selfloop transitions, 47 changer transitions 3/321 dead transitions. [2024-06-04 15:06:56,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 321 transitions, 3544 flow [2024-06-04 15:06:56,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:06:56,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:06:56,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-04 15:06:56,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489583333333333 [2024-06-04 15:06:56,334 INFO L175 Difference]: Start difference. First operand has 336 places, 303 transitions, 2783 flow. Second operand 12 states and 134 transitions. [2024-06-04 15:06:56,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 321 transitions, 3544 flow [2024-06-04 15:06:56,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 321 transitions, 3434 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-04 15:06:56,844 INFO L231 Difference]: Finished difference. Result has 340 places, 305 transitions, 2862 flow [2024-06-04 15:06:56,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2673, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2862, PETRI_PLACES=340, PETRI_TRANSITIONS=305} [2024-06-04 15:06:56,844 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 309 predicate places. [2024-06-04 15:06:56,845 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 305 transitions, 2862 flow [2024-06-04 15:06:56,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:56,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:06:56,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:06:56,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-04 15:06:56,845 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:06:56,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:06:56,846 INFO L85 PathProgramCache]: Analyzing trace with hash 2094614921, now seen corresponding path program 16 times [2024-06-04 15:06:56,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:06:56,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173393391] [2024-06-04 15:06:56,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:06:56,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:06:56,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:06:57,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:06:57,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:06:57,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173393391] [2024-06-04 15:06:57,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173393391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:06:57,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:06:57,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:06:57,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755130097] [2024-06-04 15:06:57,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:06:57,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:06:57,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:06:57,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:06:57,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:06:57,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:06:57,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 305 transitions, 2862 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:57,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:06:57,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:06:57,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:06:58,155 INFO L124 PetriNetUnfolderBase]: 712/1290 cut-off events. [2024-06-04 15:06:58,155 INFO L125 PetriNetUnfolderBase]: For 145114/145114 co-relation queries the response was YES. [2024-06-04 15:06:58,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8458 conditions, 1290 events. 712/1290 cut-off events. For 145114/145114 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7016 event pairs, 110 based on Foata normal form. 2/1290 useless extension candidates. Maximal degree in co-relation 8298. Up to 1239 conditions per place. [2024-06-04 15:06:58,170 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 293 selfloop transitions, 25 changer transitions 0/320 dead transitions. [2024-06-04 15:06:58,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 320 transitions, 3580 flow [2024-06-04 15:06:58,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:06:58,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:06:58,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-04 15:06:58,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-04 15:06:58,171 INFO L175 Difference]: Start difference. First operand has 340 places, 305 transitions, 2862 flow. Second operand 11 states and 119 transitions. [2024-06-04 15:06:58,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 320 transitions, 3580 flow [2024-06-04 15:06:58,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 320 transitions, 3411 flow, removed 39 selfloop flow, removed 9 redundant places. [2024-06-04 15:06:58,798 INFO L231 Difference]: Finished difference. Result has 342 places, 309 transitions, 2819 flow [2024-06-04 15:06:58,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2693, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2819, PETRI_PLACES=342, PETRI_TRANSITIONS=309} [2024-06-04 15:06:58,798 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 311 predicate places. [2024-06-04 15:06:58,798 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 309 transitions, 2819 flow [2024-06-04 15:06:58,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:58,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:06:58,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:06:58,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-04 15:06:58,799 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:06:58,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:06:58,799 INFO L85 PathProgramCache]: Analyzing trace with hash 2118508127, now seen corresponding path program 17 times [2024-06-04 15:06:58,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:06:58,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962886386] [2024-06-04 15:06:58,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:06:58,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:06:58,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:06:59,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:06:59,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:06:59,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962886386] [2024-06-04 15:06:59,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962886386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:06:59,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:06:59,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:06:59,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72930893] [2024-06-04 15:06:59,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:06:59,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:06:59,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:06:59,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:06:59,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:06:59,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:06:59,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 309 transitions, 2819 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:06:59,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:06:59,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:06:59,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:00,301 INFO L124 PetriNetUnfolderBase]: 759/1383 cut-off events. [2024-06-04 15:07:00,301 INFO L125 PetriNetUnfolderBase]: For 237785/237785 co-relation queries the response was YES. [2024-06-04 15:07:00,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10542 conditions, 1383 events. 759/1383 cut-off events. For 237785/237785 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7577 event pairs, 109 based on Foata normal form. 2/1383 useless extension candidates. Maximal degree in co-relation 10380. Up to 1111 conditions per place. [2024-06-04 15:07:00,317 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 280 selfloop transitions, 51 changer transitions 0/333 dead transitions. [2024-06-04 15:07:00,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 333 transitions, 3907 flow [2024-06-04 15:07:00,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:07:00,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:07:00,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-04 15:07:00,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-04 15:07:00,318 INFO L175 Difference]: Start difference. First operand has 342 places, 309 transitions, 2819 flow. Second operand 11 states and 139 transitions. [2024-06-04 15:07:00,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 333 transitions, 3907 flow [2024-06-04 15:07:01,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 333 transitions, 3849 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-04 15:07:01,396 INFO L231 Difference]: Finished difference. Result has 347 places, 311 transitions, 2925 flow [2024-06-04 15:07:01,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2761, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2925, PETRI_PLACES=347, PETRI_TRANSITIONS=311} [2024-06-04 15:07:01,397 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 316 predicate places. [2024-06-04 15:07:01,397 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 311 transitions, 2925 flow [2024-06-04 15:07:01,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:01,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:01,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:07:01,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-04 15:07:01,398 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:07:01,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:01,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1574192749, now seen corresponding path program 14 times [2024-06-04 15:07:01,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:01,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559599811] [2024-06-04 15:07:01,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:01,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:01,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:02,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:02,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:02,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559599811] [2024-06-04 15:07:02,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559599811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:02,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:02,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:07:02,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25558477] [2024-06-04 15:07:02,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:02,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:07:02,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:02,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:07:02,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:07:02,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:07:02,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 311 transitions, 2925 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:02,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:02,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:07:02,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:02,810 INFO L124 PetriNetUnfolderBase]: 765/1393 cut-off events. [2024-06-04 15:07:02,811 INFO L125 PetriNetUnfolderBase]: For 243461/243461 co-relation queries the response was YES. [2024-06-04 15:07:02,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10778 conditions, 1393 events. 765/1393 cut-off events. For 243461/243461 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7675 event pairs, 113 based on Foata normal form. 2/1393 useless extension candidates. Maximal degree in co-relation 10615. Up to 1221 conditions per place. [2024-06-04 15:07:02,828 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 270 selfloop transitions, 56 changer transitions 0/328 dead transitions. [2024-06-04 15:07:02,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 328 transitions, 3695 flow [2024-06-04 15:07:02,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:07:02,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:07:02,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-04 15:07:02,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-04 15:07:02,829 INFO L175 Difference]: Start difference. First operand has 347 places, 311 transitions, 2925 flow. Second operand 11 states and 131 transitions. [2024-06-04 15:07:02,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 328 transitions, 3695 flow [2024-06-04 15:07:03,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 328 transitions, 3598 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-04 15:07:03,883 INFO L231 Difference]: Finished difference. Result has 351 places, 313 transitions, 3035 flow [2024-06-04 15:07:03,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2828, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3035, PETRI_PLACES=351, PETRI_TRANSITIONS=313} [2024-06-04 15:07:03,883 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 320 predicate places. [2024-06-04 15:07:03,884 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 313 transitions, 3035 flow [2024-06-04 15:07:03,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:03,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:03,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:07:03,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-04 15:07:03,884 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:07:03,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:03,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1401283801, now seen corresponding path program 3 times [2024-06-04 15:07:03,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:03,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503507532] [2024-06-04 15:07:03,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:03,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:04,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:04,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:04,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503507532] [2024-06-04 15:07:04,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503507532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:04,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:04,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:07:04,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964506644] [2024-06-04 15:07:04,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:04,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:07:04,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:04,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:07:04,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:07:04,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:07:04,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 313 transitions, 3035 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:04,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:04,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:07:04,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:05,331 INFO L124 PetriNetUnfolderBase]: 769/1401 cut-off events. [2024-06-04 15:07:05,331 INFO L125 PetriNetUnfolderBase]: For 247392/247392 co-relation queries the response was YES. [2024-06-04 15:07:05,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10910 conditions, 1401 events. 769/1401 cut-off events. For 247392/247392 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7719 event pairs, 127 based on Foata normal form. 2/1401 useless extension candidates. Maximal degree in co-relation 10745. Up to 1338 conditions per place. [2024-06-04 15:07:05,349 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 299 selfloop transitions, 25 changer transitions 0/326 dead transitions. [2024-06-04 15:07:05,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 326 transitions, 3719 flow [2024-06-04 15:07:05,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:07:05,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:07:05,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-04 15:07:05,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-04 15:07:05,350 INFO L175 Difference]: Start difference. First operand has 351 places, 313 transitions, 3035 flow. Second operand 10 states and 113 transitions. [2024-06-04 15:07:05,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 326 transitions, 3719 flow [2024-06-04 15:07:06,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 326 transitions, 3521 flow, removed 43 selfloop flow, removed 9 redundant places. [2024-06-04 15:07:06,471 INFO L231 Difference]: Finished difference. Result has 352 places, 314 transitions, 2903 flow [2024-06-04 15:07:06,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2837, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2903, PETRI_PLACES=352, PETRI_TRANSITIONS=314} [2024-06-04 15:07:06,472 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 321 predicate places. [2024-06-04 15:07:06,472 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 314 transitions, 2903 flow [2024-06-04 15:07:06,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:06,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:06,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:07:06,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-04 15:07:06,472 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:07:06,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:06,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1401530065, now seen corresponding path program 18 times [2024-06-04 15:07:06,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:06,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296141720] [2024-06-04 15:07:06,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:06,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:07,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:07,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:07,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296141720] [2024-06-04 15:07:07,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296141720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:07,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:07,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:07:07,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841055376] [2024-06-04 15:07:07,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:07,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:07:07,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:07,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:07:07,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:07:07,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:07:07,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 314 transitions, 2903 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:07,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:07,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:07:07,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:07,722 INFO L124 PetriNetUnfolderBase]: 793/1453 cut-off events. [2024-06-04 15:07:07,722 INFO L125 PetriNetUnfolderBase]: For 331902/331902 co-relation queries the response was YES. [2024-06-04 15:07:07,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11089 conditions, 1453 events. 793/1453 cut-off events. For 331902/331902 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 8103 event pairs, 123 based on Foata normal form. 14/1465 useless extension candidates. Maximal degree in co-relation 10923. Up to 1255 conditions per place. [2024-06-04 15:07:07,739 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 282 selfloop transitions, 39 changer transitions 13/336 dead transitions. [2024-06-04 15:07:07,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 336 transitions, 3744 flow [2024-06-04 15:07:07,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:07:07,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:07:07,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-04 15:07:07,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-04 15:07:07,740 INFO L175 Difference]: Start difference. First operand has 352 places, 314 transitions, 2903 flow. Second operand 11 states and 135 transitions. [2024-06-04 15:07:07,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 336 transitions, 3744 flow [2024-06-04 15:07:08,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 336 transitions, 3673 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-04 15:07:09,001 INFO L231 Difference]: Finished difference. Result has 354 places, 310 transitions, 2897 flow [2024-06-04 15:07:09,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2832, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2897, PETRI_PLACES=354, PETRI_TRANSITIONS=310} [2024-06-04 15:07:09,002 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 323 predicate places. [2024-06-04 15:07:09,002 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 310 transitions, 2897 flow [2024-06-04 15:07:09,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:09,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:09,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:07:09,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-04 15:07:09,002 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:07:09,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:09,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1574192935, now seen corresponding path program 19 times [2024-06-04 15:07:09,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:09,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336247593] [2024-06-04 15:07:09,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:09,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:09,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:09,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:09,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:09,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336247593] [2024-06-04 15:07:09,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336247593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:09,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:09,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:07:09,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636287004] [2024-06-04 15:07:09,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:09,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:07:09,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:09,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:07:09,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:07:09,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:07:09,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 310 transitions, 2897 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:09,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:09,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:07:09,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:10,418 INFO L124 PetriNetUnfolderBase]: 761/1397 cut-off events. [2024-06-04 15:07:10,418 INFO L125 PetriNetUnfolderBase]: For 254466/254466 co-relation queries the response was YES. [2024-06-04 15:07:10,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10780 conditions, 1397 events. 761/1397 cut-off events. For 254466/254466 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7789 event pairs, 117 based on Foata normal form. 2/1397 useless extension candidates. Maximal degree in co-relation 10615. Up to 1251 conditions per place. [2024-06-04 15:07:10,435 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 275 selfloop transitions, 48 changer transitions 0/325 dead transitions. [2024-06-04 15:07:10,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 325 transitions, 3591 flow [2024-06-04 15:07:10,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:07:10,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:07:10,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-04 15:07:10,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463541666666667 [2024-06-04 15:07:10,437 INFO L175 Difference]: Start difference. First operand has 354 places, 310 transitions, 2897 flow. Second operand 12 states and 133 transitions. [2024-06-04 15:07:10,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 325 transitions, 3591 flow [2024-06-04 15:07:11,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 325 transitions, 3497 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-04 15:07:11,759 INFO L231 Difference]: Finished difference. Result has 357 places, 311 transitions, 2925 flow [2024-06-04 15:07:11,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2803, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2925, PETRI_PLACES=357, PETRI_TRANSITIONS=311} [2024-06-04 15:07:11,760 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 326 predicate places. [2024-06-04 15:07:11,760 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 311 transitions, 2925 flow [2024-06-04 15:07:11,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:11,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:11,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:07:11,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-04 15:07:11,760 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:07:11,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:11,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1578661399, now seen corresponding path program 15 times [2024-06-04 15:07:11,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:11,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64143639] [2024-06-04 15:07:11,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:11,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:11,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:12,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:12,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:12,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64143639] [2024-06-04 15:07:12,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64143639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:12,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:12,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:07:12,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478682076] [2024-06-04 15:07:12,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:12,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:07:12,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:12,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:07:12,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:07:12,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:07:12,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 311 transitions, 2925 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:12,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:12,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:07:12,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:13,296 INFO L124 PetriNetUnfolderBase]: 777/1423 cut-off events. [2024-06-04 15:07:13,296 INFO L125 PetriNetUnfolderBase]: For 275317/275317 co-relation queries the response was YES. [2024-06-04 15:07:13,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11431 conditions, 1423 events. 777/1423 cut-off events. For 275317/275317 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7930 event pairs, 118 based on Foata normal form. 2/1423 useless extension candidates. Maximal degree in co-relation 11265. Up to 1174 conditions per place. [2024-06-04 15:07:13,310 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 252 selfloop transitions, 76 changer transitions 0/330 dead transitions. [2024-06-04 15:07:13,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 330 transitions, 4033 flow [2024-06-04 15:07:13,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:07:13,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:07:13,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-04 15:07:13,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-04 15:07:13,311 INFO L175 Difference]: Start difference. First operand has 357 places, 311 transitions, 2925 flow. Second operand 11 states and 131 transitions. [2024-06-04 15:07:13,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 330 transitions, 4033 flow [2024-06-04 15:07:14,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 330 transitions, 3923 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-04 15:07:14,482 INFO L231 Difference]: Finished difference. Result has 358 places, 315 transitions, 3158 flow [2024-06-04 15:07:14,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2817, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3158, PETRI_PLACES=358, PETRI_TRANSITIONS=315} [2024-06-04 15:07:14,482 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 327 predicate places. [2024-06-04 15:07:14,483 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 315 transitions, 3158 flow [2024-06-04 15:07:14,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:14,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:14,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:07:14,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-04 15:07:14,483 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:07:14,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:14,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1578661585, now seen corresponding path program 20 times [2024-06-04 15:07:14,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:14,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374682036] [2024-06-04 15:07:14,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:14,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:14,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:15,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:15,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:15,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374682036] [2024-06-04 15:07:15,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374682036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:15,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:15,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:07:15,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49692493] [2024-06-04 15:07:15,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:15,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:07:15,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:15,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:07:15,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:07:15,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:07:15,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 315 transitions, 3158 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:15,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:15,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:07:15,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:15,955 INFO L124 PetriNetUnfolderBase]: 774/1418 cut-off events. [2024-06-04 15:07:15,955 INFO L125 PetriNetUnfolderBase]: For 261649/261649 co-relation queries the response was YES. [2024-06-04 15:07:15,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11254 conditions, 1418 events. 774/1418 cut-off events. For 261649/261649 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7885 event pairs, 115 based on Foata normal form. 2/1418 useless extension candidates. Maximal degree in co-relation 11087. Up to 1198 conditions per place. [2024-06-04 15:07:15,971 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 250 selfloop transitions, 79 changer transitions 0/331 dead transitions. [2024-06-04 15:07:15,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 331 transitions, 3850 flow [2024-06-04 15:07:15,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 15:07:15,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 15:07:15,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 146 transitions. [2024-06-04 15:07:15,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35096153846153844 [2024-06-04 15:07:15,972 INFO L175 Difference]: Start difference. First operand has 358 places, 315 transitions, 3158 flow. Second operand 13 states and 146 transitions. [2024-06-04 15:07:15,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 331 transitions, 3850 flow [2024-06-04 15:07:17,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 331 transitions, 3681 flow, removed 56 selfloop flow, removed 7 redundant places. [2024-06-04 15:07:17,132 INFO L231 Difference]: Finished difference. Result has 364 places, 315 transitions, 3155 flow [2024-06-04 15:07:17,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2989, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3155, PETRI_PLACES=364, PETRI_TRANSITIONS=315} [2024-06-04 15:07:17,132 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 333 predicate places. [2024-06-04 15:07:17,132 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 315 transitions, 3155 flow [2024-06-04 15:07:17,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:17,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:17,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:07:17,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-04 15:07:17,133 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:07:17,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:17,133 INFO L85 PathProgramCache]: Analyzing trace with hash 309368239, now seen corresponding path program 21 times [2024-06-04 15:07:17,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:17,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747680001] [2024-06-04 15:07:17,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:17,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:17,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:17,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:17,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:17,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747680001] [2024-06-04 15:07:17,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747680001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:17,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:17,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:07:17,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906312101] [2024-06-04 15:07:17,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:17,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:07:17,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:17,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:07:17,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:07:18,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:07:18,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 315 transitions, 3155 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:18,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:18,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:07:18,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:18,624 INFO L124 PetriNetUnfolderBase]: 798/1470 cut-off events. [2024-06-04 15:07:18,625 INFO L125 PetriNetUnfolderBase]: For 350135/350135 co-relation queries the response was YES. [2024-06-04 15:07:18,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11633 conditions, 1470 events. 798/1470 cut-off events. For 350135/350135 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 8282 event pairs, 125 based on Foata normal form. 14/1482 useless extension candidates. Maximal degree in co-relation 11464. Up to 1321 conditions per place. [2024-06-04 15:07:18,642 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 293 selfloop transitions, 29 changer transitions 12/336 dead transitions. [2024-06-04 15:07:18,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 336 transitions, 3997 flow [2024-06-04 15:07:18,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:07:18,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:07:18,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-04 15:07:18,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-04 15:07:18,644 INFO L175 Difference]: Start difference. First operand has 364 places, 315 transitions, 3155 flow. Second operand 11 states and 131 transitions. [2024-06-04 15:07:18,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 336 transitions, 3997 flow [2024-06-04 15:07:19,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 336 transitions, 3833 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-04 15:07:19,971 INFO L231 Difference]: Finished difference. Result has 363 places, 311 transitions, 3032 flow [2024-06-04 15:07:19,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2991, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3032, PETRI_PLACES=363, PETRI_TRANSITIONS=311} [2024-06-04 15:07:19,972 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 332 predicate places. [2024-06-04 15:07:19,972 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 311 transitions, 3032 flow [2024-06-04 15:07:19,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:19,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:19,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:07:19,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-04 15:07:19,973 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:07:19,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:19,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1578781555, now seen corresponding path program 22 times [2024-06-04 15:07:19,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:19,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77107128] [2024-06-04 15:07:19,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:19,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:19,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:20,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:20,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:20,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77107128] [2024-06-04 15:07:20,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77107128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:20,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:20,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:07:20,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376803813] [2024-06-04 15:07:20,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:20,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:07:20,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:20,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:07:20,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:07:20,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:07:20,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 311 transitions, 3032 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:20,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:20,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:07:20,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:21,404 INFO L124 PetriNetUnfolderBase]: 804/1484 cut-off events. [2024-06-04 15:07:21,404 INFO L125 PetriNetUnfolderBase]: For 350838/350838 co-relation queries the response was YES. [2024-06-04 15:07:21,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13080 conditions, 1484 events. 804/1484 cut-off events. For 350838/350838 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 8327 event pairs, 125 based on Foata normal form. 2/1484 useless extension candidates. Maximal degree in co-relation 12910. Up to 1000 conditions per place. [2024-06-04 15:07:21,422 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 252 selfloop transitions, 80 changer transitions 0/334 dead transitions. [2024-06-04 15:07:21,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 334 transitions, 4118 flow [2024-06-04 15:07:21,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:07:21,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:07:21,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-04 15:07:21,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-04 15:07:21,423 INFO L175 Difference]: Start difference. First operand has 363 places, 311 transitions, 3032 flow. Second operand 11 states and 137 transitions. [2024-06-04 15:07:21,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 334 transitions, 4118 flow [2024-06-04 15:07:22,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 334 transitions, 4034 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-04 15:07:22,639 INFO L231 Difference]: Finished difference. Result has 364 places, 312 transitions, 3144 flow [2024-06-04 15:07:22,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2948, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3144, PETRI_PLACES=364, PETRI_TRANSITIONS=312} [2024-06-04 15:07:22,639 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 333 predicate places. [2024-06-04 15:07:22,639 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 312 transitions, 3144 flow [2024-06-04 15:07:22,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:22,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:22,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:07:22,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-04 15:07:22,640 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:07:22,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:22,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1401529879, now seen corresponding path program 16 times [2024-06-04 15:07:22,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:22,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900402960] [2024-06-04 15:07:22,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:22,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:22,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:23,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:23,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:23,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900402960] [2024-06-04 15:07:23,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900402960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:23,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:23,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:07:23,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614939023] [2024-06-04 15:07:23,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:23,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:07:23,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:23,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:07:23,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:07:23,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:07:23,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 312 transitions, 3144 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:23,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:23,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:07:23,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:24,204 INFO L124 PetriNetUnfolderBase]: 810/1494 cut-off events. [2024-06-04 15:07:24,204 INFO L125 PetriNetUnfolderBase]: For 357043/357043 co-relation queries the response was YES. [2024-06-04 15:07:24,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13349 conditions, 1494 events. 810/1494 cut-off events. For 357043/357043 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 8417 event pairs, 138 based on Foata normal form. 2/1494 useless extension candidates. Maximal degree in co-relation 13178. Up to 1344 conditions per place. [2024-06-04 15:07:24,223 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 284 selfloop transitions, 42 changer transitions 2/330 dead transitions. [2024-06-04 15:07:24,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 330 transitions, 3923 flow [2024-06-04 15:07:24,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:07:24,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:07:24,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-04 15:07:24,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-04 15:07:24,227 INFO L175 Difference]: Start difference. First operand has 364 places, 312 transitions, 3144 flow. Second operand 11 states and 130 transitions. [2024-06-04 15:07:24,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 330 transitions, 3923 flow [2024-06-04 15:07:25,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 330 transitions, 3709 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-04 15:07:25,740 INFO L231 Difference]: Finished difference. Result has 365 places, 314 transitions, 3104 flow [2024-06-04 15:07:25,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2931, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3104, PETRI_PLACES=365, PETRI_TRANSITIONS=314} [2024-06-04 15:07:25,741 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 334 predicate places. [2024-06-04 15:07:25,741 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 314 transitions, 3104 flow [2024-06-04 15:07:25,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:25,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:25,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:07:25,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-04 15:07:25,742 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:07:25,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:25,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1407959155, now seen corresponding path program 23 times [2024-06-04 15:07:25,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:25,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268493196] [2024-06-04 15:07:25,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:25,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:25,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:26,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:26,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:26,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268493196] [2024-06-04 15:07:26,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268493196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:26,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:26,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:07:26,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673577014] [2024-06-04 15:07:26,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:26,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:07:26,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:26,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:07:26,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:07:26,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:07:26,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 314 transitions, 3104 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:26,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:26,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:07:26,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:27,364 INFO L124 PetriNetUnfolderBase]: 791/1461 cut-off events. [2024-06-04 15:07:27,364 INFO L125 PetriNetUnfolderBase]: For 347172/347172 co-relation queries the response was YES. [2024-06-04 15:07:27,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11238 conditions, 1461 events. 791/1461 cut-off events. For 347172/347172 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 8235 event pairs, 128 based on Foata normal form. 14/1473 useless extension candidates. Maximal degree in co-relation 11068. Up to 1262 conditions per place. [2024-06-04 15:07:27,382 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 281 selfloop transitions, 40 changer transitions 14/337 dead transitions. [2024-06-04 15:07:27,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 337 transitions, 3932 flow [2024-06-04 15:07:27,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:07:27,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:07:27,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-04 15:07:27,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-04 15:07:27,384 INFO L175 Difference]: Start difference. First operand has 365 places, 314 transitions, 3104 flow. Second operand 12 states and 147 transitions. [2024-06-04 15:07:27,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 337 transitions, 3932 flow [2024-06-04 15:07:28,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 337 transitions, 3767 flow, removed 42 selfloop flow, removed 9 redundant places. [2024-06-04 15:07:28,560 INFO L231 Difference]: Finished difference. Result has 368 places, 309 transitions, 2965 flow [2024-06-04 15:07:28,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2939, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2965, PETRI_PLACES=368, PETRI_TRANSITIONS=309} [2024-06-04 15:07:28,561 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 337 predicate places. [2024-06-04 15:07:28,561 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 309 transitions, 2965 flow [2024-06-04 15:07:28,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:28,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:28,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:07:28,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-04 15:07:28,562 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:07:28,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:28,562 INFO L85 PathProgramCache]: Analyzing trace with hash 2088181181, now seen corresponding path program 24 times [2024-06-04 15:07:28,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:28,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092224291] [2024-06-04 15:07:28,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:28,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:28,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:29,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:29,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:29,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092224291] [2024-06-04 15:07:29,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092224291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:29,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:29,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:07:29,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205684981] [2024-06-04 15:07:29,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:29,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:07:29,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:29,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:07:29,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:07:29,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:07:29,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 309 transitions, 2965 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:29,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:29,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:07:29,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:30,061 INFO L124 PetriNetUnfolderBase]: 759/1397 cut-off events. [2024-06-04 15:07:30,061 INFO L125 PetriNetUnfolderBase]: For 261939/261939 co-relation queries the response was YES. [2024-06-04 15:07:30,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10743 conditions, 1397 events. 759/1397 cut-off events. For 261939/261939 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7785 event pairs, 112 based on Foata normal form. 2/1397 useless extension candidates. Maximal degree in co-relation 10572. Up to 1167 conditions per place. [2024-06-04 15:07:30,079 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 286 selfloop transitions, 43 changer transitions 0/331 dead transitions. [2024-06-04 15:07:30,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 331 transitions, 4044 flow [2024-06-04 15:07:30,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:07:30,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:07:30,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-04 15:07:30,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 15:07:30,080 INFO L175 Difference]: Start difference. First operand has 368 places, 309 transitions, 2965 flow. Second operand 11 states and 132 transitions. [2024-06-04 15:07:30,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 331 transitions, 4044 flow [2024-06-04 15:07:31,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 331 transitions, 3936 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-04 15:07:31,330 INFO L231 Difference]: Finished difference. Result has 366 places, 310 transitions, 2974 flow [2024-06-04 15:07:31,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2857, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2974, PETRI_PLACES=366, PETRI_TRANSITIONS=310} [2024-06-04 15:07:31,336 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 335 predicate places. [2024-06-04 15:07:31,336 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 310 transitions, 2974 flow [2024-06-04 15:07:31,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:31,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:31,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:07:31,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-04 15:07:31,337 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:07:31,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:31,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1407958969, now seen corresponding path program 17 times [2024-06-04 15:07:31,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:31,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671626852] [2024-06-04 15:07:31,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:31,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:31,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:32,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:32,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:32,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671626852] [2024-06-04 15:07:32,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671626852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:32,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:32,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:07:32,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196029900] [2024-06-04 15:07:32,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:32,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:07:32,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:32,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:07:32,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:07:32,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:07:32,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 310 transitions, 2974 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:32,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:32,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:07:32,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:32,805 INFO L124 PetriNetUnfolderBase]: 775/1423 cut-off events. [2024-06-04 15:07:32,805 INFO L125 PetriNetUnfolderBase]: For 283791/283791 co-relation queries the response was YES. [2024-06-04 15:07:32,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11353 conditions, 1423 events. 775/1423 cut-off events. For 283791/283791 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 7981 event pairs, 118 based on Foata normal form. 2/1423 useless extension candidates. Maximal degree in co-relation 11183. Up to 1261 conditions per place. [2024-06-04 15:07:32,819 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 282 selfloop transitions, 46 changer transitions 0/330 dead transitions. [2024-06-04 15:07:32,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 330 transitions, 4082 flow [2024-06-04 15:07:32,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:07:32,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:07:32,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-04 15:07:32,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-04 15:07:32,820 INFO L175 Difference]: Start difference. First operand has 366 places, 310 transitions, 2974 flow. Second operand 11 states and 133 transitions. [2024-06-04 15:07:32,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 330 transitions, 4082 flow [2024-06-04 15:07:34,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 330 transitions, 3891 flow, removed 14 selfloop flow, removed 11 redundant places. [2024-06-04 15:07:34,165 INFO L231 Difference]: Finished difference. Result has 366 places, 314 transitions, 3052 flow [2024-06-04 15:07:34,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2783, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3052, PETRI_PLACES=366, PETRI_TRANSITIONS=314} [2024-06-04 15:07:34,166 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 335 predicate places. [2024-06-04 15:07:34,166 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 314 transitions, 3052 flow [2024-06-04 15:07:34,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:34,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:34,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:07:34,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-04 15:07:34,166 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:07:34,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:34,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1438286101, now seen corresponding path program 25 times [2024-06-04 15:07:34,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:34,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756495749] [2024-06-04 15:07:34,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:34,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:34,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:35,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:35,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:35,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756495749] [2024-06-04 15:07:35,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756495749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:35,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:35,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:07:35,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588163432] [2024-06-04 15:07:35,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:35,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:07:35,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:35,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:07:35,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:07:35,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:07:35,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 314 transitions, 3052 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:35,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:35,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:07:35,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:35,703 INFO L124 PetriNetUnfolderBase]: 779/1431 cut-off events. [2024-06-04 15:07:35,703 INFO L125 PetriNetUnfolderBase]: For 288548/288548 co-relation queries the response was YES. [2024-06-04 15:07:35,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11238 conditions, 1431 events. 779/1431 cut-off events. For 288548/288548 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8030 event pairs, 119 based on Foata normal form. 2/1431 useless extension candidates. Maximal degree in co-relation 11069. Up to 1314 conditions per place. [2024-06-04 15:07:35,720 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 286 selfloop transitions, 42 changer transitions 0/330 dead transitions. [2024-06-04 15:07:35,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 330 transitions, 3763 flow [2024-06-04 15:07:35,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:07:35,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:07:35,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-04 15:07:35,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463541666666667 [2024-06-04 15:07:35,721 INFO L175 Difference]: Start difference. First operand has 366 places, 314 transitions, 3052 flow. Second operand 12 states and 133 transitions. [2024-06-04 15:07:35,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 330 transitions, 3763 flow [2024-06-04 15:07:36,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 330 transitions, 3633 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-04 15:07:36,884 INFO L231 Difference]: Finished difference. Result has 371 places, 315 transitions, 3037 flow [2024-06-04 15:07:36,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2922, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3037, PETRI_PLACES=371, PETRI_TRANSITIONS=315} [2024-06-04 15:07:36,885 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 340 predicate places. [2024-06-04 15:07:36,885 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 315 transitions, 3037 flow [2024-06-04 15:07:36,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:36,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:36,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:07:36,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-04 15:07:36,885 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:07:36,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:36,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1438285915, now seen corresponding path program 18 times [2024-06-04 15:07:36,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:36,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209560873] [2024-06-04 15:07:36,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:36,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:36,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:37,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:37,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:37,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209560873] [2024-06-04 15:07:37,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209560873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:37,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:37,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:07:37,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609636723] [2024-06-04 15:07:37,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:37,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:07:37,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:37,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:07:37,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:07:37,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:07:37,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 315 transitions, 3037 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:37,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:37,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:07:37,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:38,402 INFO L124 PetriNetUnfolderBase]: 785/1441 cut-off events. [2024-06-04 15:07:38,402 INFO L125 PetriNetUnfolderBase]: For 293090/293090 co-relation queries the response was YES. [2024-06-04 15:07:38,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11389 conditions, 1441 events. 785/1441 cut-off events. For 293090/293090 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 8067 event pairs, 112 based on Foata normal form. 2/1441 useless extension candidates. Maximal degree in co-relation 11218. Up to 1276 conditions per place. [2024-06-04 15:07:38,426 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 282 selfloop transitions, 51 changer transitions 0/335 dead transitions. [2024-06-04 15:07:38,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 335 transitions, 4173 flow [2024-06-04 15:07:38,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:07:38,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:07:38,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-04 15:07:38,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-04 15:07:38,428 INFO L175 Difference]: Start difference. First operand has 371 places, 315 transitions, 3037 flow. Second operand 11 states and 129 transitions. [2024-06-04 15:07:38,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 335 transitions, 4173 flow [2024-06-04 15:07:39,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 335 transitions, 4069 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-04 15:07:39,910 INFO L231 Difference]: Finished difference. Result has 373 places, 319 transitions, 3252 flow [2024-06-04 15:07:39,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2935, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3252, PETRI_PLACES=373, PETRI_TRANSITIONS=319} [2024-06-04 15:07:39,910 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 342 predicate places. [2024-06-04 15:07:39,911 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 319 transitions, 3252 flow [2024-06-04 15:07:39,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:39,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:39,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:07:39,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-04 15:07:39,911 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:07:39,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:39,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1407785989, now seen corresponding path program 19 times [2024-06-04 15:07:39,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:39,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760315664] [2024-06-04 15:07:39,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:39,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:39,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:40,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:40,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:40,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760315664] [2024-06-04 15:07:40,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760315664] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:40,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:40,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:07:40,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959639215] [2024-06-04 15:07:40,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:40,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:07:40,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:40,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:07:40,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:07:41,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:07:41,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 319 transitions, 3252 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:41,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:41,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:07:41,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:41,563 INFO L124 PetriNetUnfolderBase]: 781/1435 cut-off events. [2024-06-04 15:07:41,563 INFO L125 PetriNetUnfolderBase]: For 277292/277292 co-relation queries the response was YES. [2024-06-04 15:07:41,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11142 conditions, 1435 events. 781/1435 cut-off events. For 277292/277292 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 8043 event pairs, 122 based on Foata normal form. 2/1435 useless extension candidates. Maximal degree in co-relation 10969. Up to 1319 conditions per place. [2024-06-04 15:07:41,581 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 295 selfloop transitions, 35 changer transitions 0/332 dead transitions. [2024-06-04 15:07:41,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 332 transitions, 3940 flow [2024-06-04 15:07:41,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:07:41,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:07:41,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-04 15:07:41,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-04 15:07:41,582 INFO L175 Difference]: Start difference. First operand has 373 places, 319 transitions, 3252 flow. Second operand 11 states and 126 transitions. [2024-06-04 15:07:41,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 332 transitions, 3940 flow [2024-06-04 15:07:42,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 332 transitions, 3664 flow, removed 82 selfloop flow, removed 10 redundant places. [2024-06-04 15:07:42,784 INFO L231 Difference]: Finished difference. Result has 374 places, 319 transitions, 3051 flow [2024-06-04 15:07:42,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2976, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3051, PETRI_PLACES=374, PETRI_TRANSITIONS=319} [2024-06-04 15:07:42,785 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 343 predicate places. [2024-06-04 15:07:42,785 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 319 transitions, 3051 flow [2024-06-04 15:07:42,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:42,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:42,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:07:42,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-04 15:07:42,786 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:07:42,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:42,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1774810329, now seen corresponding path program 4 times [2024-06-04 15:07:42,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:42,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51590498] [2024-06-04 15:07:42,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:42,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:42,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:43,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:43,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:43,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51590498] [2024-06-04 15:07:43,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51590498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:43,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:43,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:07:43,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979023562] [2024-06-04 15:07:43,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:43,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:07:43,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:43,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:07:43,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:07:43,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:07:43,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 319 transitions, 3051 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:43,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:43,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:07:43,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:44,411 INFO L124 PetriNetUnfolderBase]: 785/1443 cut-off events. [2024-06-04 15:07:44,412 INFO L125 PetriNetUnfolderBase]: For 278696/278696 co-relation queries the response was YES. [2024-06-04 15:07:44,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10843 conditions, 1443 events. 785/1443 cut-off events. For 278696/278696 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 8104 event pairs, 121 based on Foata normal form. 2/1443 useless extension candidates. Maximal degree in co-relation 10671. Up to 1402 conditions per place. [2024-06-04 15:07:44,430 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 314 selfloop transitions, 16 changer transitions 0/332 dead transitions. [2024-06-04 15:07:44,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 332 transitions, 3749 flow [2024-06-04 15:07:44,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:07:44,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:07:44,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-04 15:07:44,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-04 15:07:44,431 INFO L175 Difference]: Start difference. First operand has 374 places, 319 transitions, 3051 flow. Second operand 10 states and 108 transitions. [2024-06-04 15:07:44,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 332 transitions, 3749 flow [2024-06-04 15:07:45,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 332 transitions, 3657 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-04 15:07:45,739 INFO L231 Difference]: Finished difference. Result has 374 places, 320 transitions, 3009 flow [2024-06-04 15:07:45,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2959, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3009, PETRI_PLACES=374, PETRI_TRANSITIONS=320} [2024-06-04 15:07:45,740 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 343 predicate places. [2024-06-04 15:07:45,740 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 320 transitions, 3009 flow [2024-06-04 15:07:45,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:45,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:45,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:07:45,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-04 15:07:45,741 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:07:45,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:45,741 INFO L85 PathProgramCache]: Analyzing trace with hash -2070029529, now seen corresponding path program 5 times [2024-06-04 15:07:45,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:45,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148940977] [2024-06-04 15:07:45,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:45,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:45,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:46,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:46,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:46,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148940977] [2024-06-04 15:07:46,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148940977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:46,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:46,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:07:46,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661768286] [2024-06-04 15:07:46,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:46,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:07:46,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:46,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:07:46,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:07:46,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:07:46,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 320 transitions, 3009 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:46,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:46,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:07:46,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:47,129 INFO L124 PetriNetUnfolderBase]: 789/1451 cut-off events. [2024-06-04 15:07:47,129 INFO L125 PetriNetUnfolderBase]: For 282937/282937 co-relation queries the response was YES. [2024-06-04 15:07:47,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10862 conditions, 1451 events. 789/1451 cut-off events. For 282937/282937 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 8170 event pairs, 128 based on Foata normal form. 2/1451 useless extension candidates. Maximal degree in co-relation 10689. Up to 1415 conditions per place. [2024-06-04 15:07:47,145 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 314 selfloop transitions, 16 changer transitions 0/332 dead transitions. [2024-06-04 15:07:47,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 332 transitions, 3707 flow [2024-06-04 15:07:47,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:07:47,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:07:47,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-04 15:07:47,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-04 15:07:47,146 INFO L175 Difference]: Start difference. First operand has 374 places, 320 transitions, 3009 flow. Second operand 10 states and 107 transitions. [2024-06-04 15:07:47,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 332 transitions, 3707 flow [2024-06-04 15:07:48,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 332 transitions, 3667 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-04 15:07:48,423 INFO L231 Difference]: Finished difference. Result has 376 places, 321 transitions, 3021 flow [2024-06-04 15:07:48,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2969, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3021, PETRI_PLACES=376, PETRI_TRANSITIONS=321} [2024-06-04 15:07:48,423 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 345 predicate places. [2024-06-04 15:07:48,424 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 321 transitions, 3021 flow [2024-06-04 15:07:48,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:48,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:48,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:07:48,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-04 15:07:48,424 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:07:48,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:48,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1784938587, now seen corresponding path program 20 times [2024-06-04 15:07:48,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:48,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958239960] [2024-06-04 15:07:48,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:48,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:49,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:49,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:49,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958239960] [2024-06-04 15:07:49,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958239960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:49,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:49,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:07:49,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3243977] [2024-06-04 15:07:49,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:49,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:07:49,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:49,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:07:49,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:07:49,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:07:49,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 321 transitions, 3021 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:49,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:49,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:07:49,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:49,890 INFO L124 PetriNetUnfolderBase]: 785/1445 cut-off events. [2024-06-04 15:07:49,891 INFO L125 PetriNetUnfolderBase]: For 270309/270309 co-relation queries the response was YES. [2024-06-04 15:07:49,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10553 conditions, 1445 events. 785/1445 cut-off events. For 270309/270309 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8158 event pairs, 123 based on Foata normal form. 2/1445 useless extension candidates. Maximal degree in co-relation 10379. Up to 1394 conditions per place. [2024-06-04 15:07:49,908 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 314 selfloop transitions, 19 changer transitions 0/335 dead transitions. [2024-06-04 15:07:49,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 335 transitions, 3717 flow [2024-06-04 15:07:49,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:07:49,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:07:49,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-04 15:07:49,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-04 15:07:49,909 INFO L175 Difference]: Start difference. First operand has 376 places, 321 transitions, 3021 flow. Second operand 11 states and 119 transitions. [2024-06-04 15:07:49,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 335 transitions, 3717 flow [2024-06-04 15:07:51,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 335 transitions, 3651 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-04 15:07:51,167 INFO L231 Difference]: Finished difference. Result has 378 places, 321 transitions, 2998 flow [2024-06-04 15:07:51,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2955, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2998, PETRI_PLACES=378, PETRI_TRANSITIONS=321} [2024-06-04 15:07:51,168 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 347 predicate places. [2024-06-04 15:07:51,168 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 321 transitions, 2998 flow [2024-06-04 15:07:51,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:51,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:51,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:07:51,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-04 15:07:51,169 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:07:51,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:51,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1210211971, now seen corresponding path program 26 times [2024-06-04 15:07:51,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:51,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995375719] [2024-06-04 15:07:51,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:51,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:51,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:51,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:51,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:51,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995375719] [2024-06-04 15:07:51,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995375719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:51,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:51,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:07:51,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587422603] [2024-06-04 15:07:51,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:51,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:07:51,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:51,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:07:51,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:07:52,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:07:52,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 321 transitions, 2998 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:52,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:52,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:07:52,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:52,551 INFO L124 PetriNetUnfolderBase]: 782/1440 cut-off events. [2024-06-04 15:07:52,552 INFO L125 PetriNetUnfolderBase]: For 257251/257251 co-relation queries the response was YES. [2024-06-04 15:07:52,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10259 conditions, 1440 events. 782/1440 cut-off events. For 257251/257251 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8136 event pairs, 128 based on Foata normal form. 2/1440 useless extension candidates. Maximal degree in co-relation 10085. Up to 1404 conditions per place. [2024-06-04 15:07:52,569 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 312 selfloop transitions, 18 changer transitions 0/332 dead transitions. [2024-06-04 15:07:52,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 332 transitions, 3682 flow [2024-06-04 15:07:52,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:07:52,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:07:52,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-04 15:07:52,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-04 15:07:52,570 INFO L175 Difference]: Start difference. First operand has 378 places, 321 transitions, 2998 flow. Second operand 11 states and 115 transitions. [2024-06-04 15:07:52,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 332 transitions, 3682 flow [2024-06-04 15:07:53,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 332 transitions, 3571 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-06-04 15:07:53,689 INFO L231 Difference]: Finished difference. Result has 380 places, 321 transitions, 2927 flow [2024-06-04 15:07:53,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2887, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2927, PETRI_PLACES=380, PETRI_TRANSITIONS=321} [2024-06-04 15:07:53,689 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 349 predicate places. [2024-06-04 15:07:53,689 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 321 transitions, 2927 flow [2024-06-04 15:07:53,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:53,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:53,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:07:53,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-04 15:07:53,690 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:07:53,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:53,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1774454139, now seen corresponding path program 6 times [2024-06-04 15:07:53,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:53,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988570208] [2024-06-04 15:07:53,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:53,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:53,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:54,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:54,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:54,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988570208] [2024-06-04 15:07:54,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988570208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:54,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:54,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:07:54,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252455147] [2024-06-04 15:07:54,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:54,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:07:54,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:54,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:07:54,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:07:54,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:07:54,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 321 transitions, 2927 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:54,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:54,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:07:54,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:55,249 INFO L124 PetriNetUnfolderBase]: 779/1435 cut-off events. [2024-06-04 15:07:55,250 INFO L125 PetriNetUnfolderBase]: For 242707/242707 co-relation queries the response was YES. [2024-06-04 15:07:55,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9886 conditions, 1435 events. 779/1435 cut-off events. For 242707/242707 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8086 event pairs, 117 based on Foata normal form. 2/1435 useless extension candidates. Maximal degree in co-relation 9711. Up to 1394 conditions per place. [2024-06-04 15:07:55,269 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 316 selfloop transitions, 15 changer transitions 0/333 dead transitions. [2024-06-04 15:07:55,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 333 transitions, 3615 flow [2024-06-04 15:07:55,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:07:55,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:07:55,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-04 15:07:55,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-04 15:07:55,271 INFO L175 Difference]: Start difference. First operand has 380 places, 321 transitions, 2927 flow. Second operand 10 states and 106 transitions. [2024-06-04 15:07:55,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 333 transitions, 3615 flow [2024-06-04 15:07:56,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 333 transitions, 3389 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-06-04 15:07:56,438 INFO L231 Difference]: Finished difference. Result has 378 places, 321 transitions, 2735 flow [2024-06-04 15:07:56,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2701, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2735, PETRI_PLACES=378, PETRI_TRANSITIONS=321} [2024-06-04 15:07:56,438 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 347 predicate places. [2024-06-04 15:07:56,439 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 321 transitions, 2735 flow [2024-06-04 15:07:56,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:56,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:56,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:07:56,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-04 15:07:56,439 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:07:56,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:56,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1210211785, now seen corresponding path program 21 times [2024-06-04 15:07:56,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:56,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496403586] [2024-06-04 15:07:56,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:56,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:56,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:57,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:57,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:57,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496403586] [2024-06-04 15:07:57,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496403586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:57,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:57,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:07:57,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104322809] [2024-06-04 15:07:57,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:57,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:07:57,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:57,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:07:57,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:07:57,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:07:57,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 321 transitions, 2735 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:57,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:57,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:07:57,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:57,951 INFO L124 PetriNetUnfolderBase]: 739/1357 cut-off events. [2024-06-04 15:07:57,952 INFO L125 PetriNetUnfolderBase]: For 124150/124150 co-relation queries the response was YES. [2024-06-04 15:07:57,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7286 conditions, 1357 events. 739/1357 cut-off events. For 124150/124150 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7658 event pairs, 96 based on Foata normal form. 2/1357 useless extension candidates. Maximal degree in co-relation 7110. Up to 1267 conditions per place. [2024-06-04 15:07:57,970 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 304 selfloop transitions, 30 changer transitions 0/336 dead transitions. [2024-06-04 15:07:57,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 336 transitions, 3435 flow [2024-06-04 15:07:57,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:07:57,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:07:57,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-04 15:07:57,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-04 15:07:57,971 INFO L175 Difference]: Start difference. First operand has 378 places, 321 transitions, 2735 flow. Second operand 11 states and 124 transitions. [2024-06-04 15:07:57,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 336 transitions, 3435 flow [2024-06-04 15:07:58,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 336 transitions, 3262 flow, removed 36 selfloop flow, removed 10 redundant places. [2024-06-04 15:07:58,518 INFO L231 Difference]: Finished difference. Result has 379 places, 321 transitions, 2627 flow [2024-06-04 15:07:58,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2562, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2627, PETRI_PLACES=379, PETRI_TRANSITIONS=321} [2024-06-04 15:07:58,518 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 348 predicate places. [2024-06-04 15:07:58,518 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 321 transitions, 2627 flow [2024-06-04 15:07:58,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:58,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:58,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:07:58,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-04 15:07:58,519 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:07:58,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:58,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1561226187, now seen corresponding path program 1 times [2024-06-04 15:07:58,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:58,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603606742] [2024-06-04 15:07:58,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:58,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:58,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:59,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:59,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:59,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603606742] [2024-06-04 15:07:59,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603606742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:59,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:59,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:07:59,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380547835] [2024-06-04 15:07:59,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:59,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:07:59,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:59,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:07:59,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:07:59,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:07:59,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 321 transitions, 2627 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:59,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:59,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:07:59,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:00,269 INFO L124 PetriNetUnfolderBase]: 780/1444 cut-off events. [2024-06-04 15:08:00,269 INFO L125 PetriNetUnfolderBase]: For 263149/263149 co-relation queries the response was YES. [2024-06-04 15:08:00,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8998 conditions, 1444 events. 780/1444 cut-off events. For 263149/263149 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8199 event pairs, 87 based on Foata normal form. 8/1450 useless extension candidates. Maximal degree in co-relation 8822. Up to 922 conditions per place. [2024-06-04 15:08:00,285 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 275 selfloop transitions, 53 changer transitions 23/353 dead transitions. [2024-06-04 15:08:00,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 353 transitions, 3807 flow [2024-06-04 15:08:00,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 15:08:00,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 15:08:00,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 157 transitions. [2024-06-04 15:08:00,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37740384615384615 [2024-06-04 15:08:00,286 INFO L175 Difference]: Start difference. First operand has 379 places, 321 transitions, 2627 flow. Second operand 13 states and 157 transitions. [2024-06-04 15:08:00,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 353 transitions, 3807 flow [2024-06-04 15:08:01,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 353 transitions, 3630 flow, removed 14 selfloop flow, removed 12 redundant places. [2024-06-04 15:08:01,315 INFO L231 Difference]: Finished difference. Result has 380 places, 311 transitions, 2481 flow [2024-06-04 15:08:01,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2454, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2481, PETRI_PLACES=380, PETRI_TRANSITIONS=311} [2024-06-04 15:08:01,315 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 349 predicate places. [2024-06-04 15:08:01,316 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 311 transitions, 2481 flow [2024-06-04 15:08:01,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:01,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:01,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:08:01,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-04 15:08:01,316 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:08:01,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:01,316 INFO L85 PathProgramCache]: Analyzing trace with hash 239639763, now seen corresponding path program 2 times [2024-06-04 15:08:01,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:01,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679874132] [2024-06-04 15:08:01,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:01,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:01,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:02,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:02,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:02,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679874132] [2024-06-04 15:08:02,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679874132] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:02,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:02,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:08:02,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771065781] [2024-06-04 15:08:02,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:02,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:08:02,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:02,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:08:02,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:08:02,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:08:02,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 311 transitions, 2481 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:02,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:02,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:08:02,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:03,066 INFO L124 PetriNetUnfolderBase]: 747/1389 cut-off events. [2024-06-04 15:08:03,066 INFO L125 PetriNetUnfolderBase]: For 266495/266495 co-relation queries the response was YES. [2024-06-04 15:08:03,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8719 conditions, 1389 events. 747/1389 cut-off events. For 266495/266495 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 7869 event pairs, 81 based on Foata normal form. 8/1395 useless extension candidates. Maximal degree in co-relation 8543. Up to 922 conditions per place. [2024-06-04 15:08:03,082 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 267 selfloop transitions, 50 changer transitions 21/340 dead transitions. [2024-06-04 15:08:03,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 340 transitions, 3625 flow [2024-06-04 15:08:03,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 15:08:03,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 15:08:03,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 151 transitions. [2024-06-04 15:08:03,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629807692307692 [2024-06-04 15:08:03,083 INFO L175 Difference]: Start difference. First operand has 380 places, 311 transitions, 2481 flow. Second operand 13 states and 151 transitions. [2024-06-04 15:08:03,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 340 transitions, 3625 flow [2024-06-04 15:08:04,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 340 transitions, 3512 flow, removed 10 selfloop flow, removed 16 redundant places. [2024-06-04 15:08:04,114 INFO L231 Difference]: Finished difference. Result has 369 places, 299 transitions, 2383 flow [2024-06-04 15:08:04,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2378, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2383, PETRI_PLACES=369, PETRI_TRANSITIONS=299} [2024-06-04 15:08:04,114 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 338 predicate places. [2024-06-04 15:08:04,114 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 299 transitions, 2383 flow [2024-06-04 15:08:04,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:04,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:04,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:08:04,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-04 15:08:04,115 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:08:04,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:04,115 INFO L85 PathProgramCache]: Analyzing trace with hash 917262391, now seen corresponding path program 3 times [2024-06-04 15:08:04,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:04,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033411565] [2024-06-04 15:08:04,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:04,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:05,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:05,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:05,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033411565] [2024-06-04 15:08:05,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033411565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:05,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:05,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:08:05,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531011789] [2024-06-04 15:08:05,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:05,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:08:05,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:05,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:08:05,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:08:05,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:08:05,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 299 transitions, 2383 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:05,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:05,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:08:05,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:05,958 INFO L124 PetriNetUnfolderBase]: 735/1381 cut-off events. [2024-06-04 15:08:05,959 INFO L125 PetriNetUnfolderBase]: For 316495/316495 co-relation queries the response was YES. [2024-06-04 15:08:05,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9740 conditions, 1381 events. 735/1381 cut-off events. For 316495/316495 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7861 event pairs, 96 based on Foata normal form. 8/1387 useless extension candidates. Maximal degree in co-relation 9572. Up to 1060 conditions per place. [2024-06-04 15:08:05,971 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 246 selfloop transitions, 69 changer transitions 11/328 dead transitions. [2024-06-04 15:08:05,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 328 transitions, 3495 flow [2024-06-04 15:08:05,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-04 15:08:05,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-04 15:08:05,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 162 transitions. [2024-06-04 15:08:05,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-04 15:08:05,972 INFO L175 Difference]: Start difference. First operand has 369 places, 299 transitions, 2383 flow. Second operand 15 states and 162 transitions. [2024-06-04 15:08:05,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 328 transitions, 3495 flow [2024-06-04 15:08:07,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 328 transitions, 3393 flow, removed 12 selfloop flow, removed 14 redundant places. [2024-06-04 15:08:07,148 INFO L231 Difference]: Finished difference. Result has 362 places, 293 transitions, 2385 flow [2024-06-04 15:08:07,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2293, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2385, PETRI_PLACES=362, PETRI_TRANSITIONS=293} [2024-06-04 15:08:07,148 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 331 predicate places. [2024-06-04 15:08:07,148 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 293 transitions, 2385 flow [2024-06-04 15:08:07,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:07,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:07,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:08:07,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-04 15:08:07,149 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:08:07,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:07,149 INFO L85 PathProgramCache]: Analyzing trace with hash 243364413, now seen corresponding path program 4 times [2024-06-04 15:08:07,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:07,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675857831] [2024-06-04 15:08:07,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:07,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:07,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:08,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:08,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:08,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675857831] [2024-06-04 15:08:08,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675857831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:08,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:08,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:08:08,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754986206] [2024-06-04 15:08:08,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:08,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:08:08,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:08,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:08:08,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:08:08,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:08:08,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 293 transitions, 2385 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:08,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:08,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:08:08,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:08,803 INFO L124 PetriNetUnfolderBase]: 723/1365 cut-off events. [2024-06-04 15:08:08,803 INFO L125 PetriNetUnfolderBase]: For 309400/309400 co-relation queries the response was YES. [2024-06-04 15:08:08,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9671 conditions, 1365 events. 723/1365 cut-off events. For 309400/309400 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7774 event pairs, 104 based on Foata normal form. 10/1373 useless extension candidates. Maximal degree in co-relation 9508. Up to 1137 conditions per place. [2024-06-04 15:08:08,819 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 250 selfloop transitions, 48 changer transitions 16/316 dead transitions. [2024-06-04 15:08:08,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 316 transitions, 3153 flow [2024-06-04 15:08:08,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 15:08:08,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 15:08:08,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 146 transitions. [2024-06-04 15:08:08,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35096153846153844 [2024-06-04 15:08:08,820 INFO L175 Difference]: Start difference. First operand has 362 places, 293 transitions, 2385 flow. Second operand 13 states and 146 transitions. [2024-06-04 15:08:08,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 316 transitions, 3153 flow [2024-06-04 15:08:09,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 316 transitions, 3002 flow, removed 2 selfloop flow, removed 16 redundant places. [2024-06-04 15:08:09,873 INFO L231 Difference]: Finished difference. Result has 357 places, 286 transitions, 2287 flow [2024-06-04 15:08:09,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2234, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2287, PETRI_PLACES=357, PETRI_TRANSITIONS=286} [2024-06-04 15:08:09,873 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 326 predicate places. [2024-06-04 15:08:09,874 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 286 transitions, 2287 flow [2024-06-04 15:08:09,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:09,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:09,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:08:09,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-04 15:08:09,874 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:08:09,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:09,875 INFO L85 PathProgramCache]: Analyzing trace with hash 243214683, now seen corresponding path program 5 times [2024-06-04 15:08:09,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:09,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238668208] [2024-06-04 15:08:09,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:09,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:09,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:10,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:10,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:10,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238668208] [2024-06-04 15:08:10,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238668208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:10,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:10,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:08:10,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896147996] [2024-06-04 15:08:10,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:10,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:08:10,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:10,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:08:10,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:08:11,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:08:11,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 286 transitions, 2287 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:11,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:11,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:08:11,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:11,612 INFO L124 PetriNetUnfolderBase]: 682/1290 cut-off events. [2024-06-04 15:08:11,613 INFO L125 PetriNetUnfolderBase]: For 228404/228404 co-relation queries the response was YES. [2024-06-04 15:08:11,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8182 conditions, 1290 events. 682/1290 cut-off events. For 228404/228404 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7283 event pairs, 71 based on Foata normal form. 8/1296 useless extension candidates. Maximal degree in co-relation 8020. Up to 922 conditions per place. [2024-06-04 15:08:11,627 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 239 selfloop transitions, 32 changer transitions 42/315 dead transitions. [2024-06-04 15:08:11,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 315 transitions, 3361 flow [2024-06-04 15:08:11,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-04 15:08:11,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-04 15:08:11,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 155 transitions. [2024-06-04 15:08:11,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34598214285714285 [2024-06-04 15:08:11,628 INFO L175 Difference]: Start difference. First operand has 357 places, 286 transitions, 2287 flow. Second operand 14 states and 155 transitions. [2024-06-04 15:08:11,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 315 transitions, 3361 flow [2024-06-04 15:08:12,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 315 transitions, 3257 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 15:08:12,314 INFO L231 Difference]: Finished difference. Result has 355 places, 254 transitions, 1950 flow [2024-06-04 15:08:12,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2187, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1950, PETRI_PLACES=355, PETRI_TRANSITIONS=254} [2024-06-04 15:08:12,315 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 324 predicate places. [2024-06-04 15:08:12,315 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 254 transitions, 1950 flow [2024-06-04 15:08:12,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:12,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:12,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:08:12,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-04 15:08:12,315 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:08:12,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:12,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1706086611, now seen corresponding path program 6 times [2024-06-04 15:08:12,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:12,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912685400] [2024-06-04 15:08:12,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:12,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:12,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:13,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:13,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:13,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912685400] [2024-06-04 15:08:13,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912685400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:13,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:13,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:08:13,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298763225] [2024-06-04 15:08:13,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:13,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:08:13,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:13,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:08:13,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:08:13,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:08:13,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 254 transitions, 1950 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:13,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:13,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:08:13,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:13,939 INFO L124 PetriNetUnfolderBase]: 615/1160 cut-off events. [2024-06-04 15:08:13,939 INFO L125 PetriNetUnfolderBase]: For 240753/240753 co-relation queries the response was YES. [2024-06-04 15:08:13,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7616 conditions, 1160 events. 615/1160 cut-off events. For 240753/240753 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6382 event pairs, 79 based on Foata normal form. 10/1168 useless extension candidates. Maximal degree in co-relation 7468. Up to 993 conditions per place. [2024-06-04 15:08:13,951 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 229 selfloop transitions, 21 changer transitions 22/274 dead transitions. [2024-06-04 15:08:13,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 274 transitions, 2626 flow [2024-06-04 15:08:13,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:08:13,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:08:13,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-04 15:08:13,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 15:08:13,952 INFO L175 Difference]: Start difference. First operand has 355 places, 254 transitions, 1950 flow. Second operand 12 states and 132 transitions. [2024-06-04 15:08:13,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 274 transitions, 2626 flow [2024-06-04 15:08:14,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 274 transitions, 2510 flow, removed 11 selfloop flow, removed 27 redundant places. [2024-06-04 15:08:14,523 INFO L231 Difference]: Finished difference. Result has 323 places, 242 transitions, 1800 flow [2024-06-04 15:08:14,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1836, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1800, PETRI_PLACES=323, PETRI_TRANSITIONS=242} [2024-06-04 15:08:14,523 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 292 predicate places. [2024-06-04 15:08:14,524 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 242 transitions, 1800 flow [2024-06-04 15:08:14,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:14,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:14,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:08:14,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-04 15:08:14,524 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:08:14,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:14,525 INFO L85 PathProgramCache]: Analyzing trace with hash 2093705729, now seen corresponding path program 7 times [2024-06-04 15:08:14,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:14,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249388804] [2024-06-04 15:08:14,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:14,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:14,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:15,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:15,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:15,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249388804] [2024-06-04 15:08:15,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249388804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:15,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:15,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:08:15,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742484263] [2024-06-04 15:08:15,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:15,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:08:15,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:15,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:08:15,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:08:15,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:08:15,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 242 transitions, 1800 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:15,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:15,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:08:15,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:16,314 INFO L124 PetriNetUnfolderBase]: 596/1123 cut-off events. [2024-06-04 15:08:16,314 INFO L125 PetriNetUnfolderBase]: For 210430/210430 co-relation queries the response was YES. [2024-06-04 15:08:16,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7209 conditions, 1123 events. 596/1123 cut-off events. For 210430/210430 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6124 event pairs, 81 based on Foata normal form. 10/1131 useless extension candidates. Maximal degree in co-relation 7073. Up to 1009 conditions per place. [2024-06-04 15:08:16,325 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 223 selfloop transitions, 19 changer transitions 17/261 dead transitions. [2024-06-04 15:08:16,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 261 transitions, 2446 flow [2024-06-04 15:08:16,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:08:16,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:08:16,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-04 15:08:16,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-04 15:08:16,326 INFO L175 Difference]: Start difference. First operand has 323 places, 242 transitions, 1800 flow. Second operand 12 states and 126 transitions. [2024-06-04 15:08:16,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 261 transitions, 2446 flow [2024-06-04 15:08:16,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 261 transitions, 2392 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 15:08:16,907 INFO L231 Difference]: Finished difference. Result has 314 places, 235 transitions, 1742 flow [2024-06-04 15:08:16,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1746, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1742, PETRI_PLACES=314, PETRI_TRANSITIONS=235} [2024-06-04 15:08:16,907 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 283 predicate places. [2024-06-04 15:08:16,907 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 235 transitions, 1742 flow [2024-06-04 15:08:16,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:16,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:16,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:08:16,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-04 15:08:16,908 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:08:16,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:16,908 INFO L85 PathProgramCache]: Analyzing trace with hash 2088343349, now seen corresponding path program 8 times [2024-06-04 15:08:16,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:16,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623690014] [2024-06-04 15:08:16,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:16,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:16,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:17,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:17,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:17,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623690014] [2024-06-04 15:08:17,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623690014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:17,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:17,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:08:17,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264848299] [2024-06-04 15:08:17,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:17,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:08:17,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:17,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:08:17,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:08:18,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:08:18,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 235 transitions, 1742 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:18,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:18,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:08:18,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:18,392 INFO L124 PetriNetUnfolderBase]: 553/1042 cut-off events. [2024-06-04 15:08:18,393 INFO L125 PetriNetUnfolderBase]: For 139919/139919 co-relation queries the response was YES. [2024-06-04 15:08:18,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5533 conditions, 1042 events. 553/1042 cut-off events. For 139919/139919 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5638 event pairs, 62 based on Foata normal form. 10/1050 useless extension candidates. Maximal degree in co-relation 5399. Up to 922 conditions per place. [2024-06-04 15:08:18,403 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 211 selfloop transitions, 7 changer transitions 34/254 dead transitions. [2024-06-04 15:08:18,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 254 transitions, 2374 flow [2024-06-04 15:08:18,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:08:18,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:08:18,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-04 15:08:18,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255208333333333 [2024-06-04 15:08:18,404 INFO L175 Difference]: Start difference. First operand has 314 places, 235 transitions, 1742 flow. Second operand 12 states and 125 transitions. [2024-06-04 15:08:18,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 254 transitions, 2374 flow [2024-06-04 15:08:18,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 254 transitions, 2324 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-04 15:08:18,811 INFO L231 Difference]: Finished difference. Result has 309 places, 216 transitions, 1581 flow [2024-06-04 15:08:18,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1694, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1581, PETRI_PLACES=309, PETRI_TRANSITIONS=216} [2024-06-04 15:08:18,811 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 278 predicate places. [2024-06-04 15:08:18,812 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 216 transitions, 1581 flow [2024-06-04 15:08:18,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:18,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:18,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:08:18,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-04 15:08:18,812 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:08:18,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:18,813 INFO L85 PathProgramCache]: Analyzing trace with hash 615223869, now seen corresponding path program 9 times [2024-06-04 15:08:18,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:18,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815877436] [2024-06-04 15:08:18,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:18,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:18,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:19,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:19,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:19,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815877436] [2024-06-04 15:08:19,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815877436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:19,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:19,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:08:19,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104758336] [2024-06-04 15:08:19,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:19,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:08:19,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:19,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:08:19,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:08:19,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:08:19,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 216 transitions, 1581 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:19,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:19,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:08:19,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:20,212 INFO L124 PetriNetUnfolderBase]: 526/979 cut-off events. [2024-06-04 15:08:20,212 INFO L125 PetriNetUnfolderBase]: For 135169/135169 co-relation queries the response was YES. [2024-06-04 15:08:20,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5207 conditions, 979 events. 526/979 cut-off events. For 135169/135169 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5195 event pairs, 57 based on Foata normal form. 10/987 useless extension candidates. Maximal degree in co-relation 5075. Up to 698 conditions per place. [2024-06-04 15:08:20,222 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 161 selfloop transitions, 63 changer transitions 11/237 dead transitions. [2024-06-04 15:08:20,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 237 transitions, 2179 flow [2024-06-04 15:08:20,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:08:20,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:08:20,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-04 15:08:20,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-04 15:08:20,223 INFO L175 Difference]: Start difference. First operand has 309 places, 216 transitions, 1581 flow. Second operand 12 states and 147 transitions. [2024-06-04 15:08:20,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 237 transitions, 2179 flow [2024-06-04 15:08:20,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 237 transitions, 2119 flow, removed 17 selfloop flow, removed 15 redundant places. [2024-06-04 15:08:20,601 INFO L231 Difference]: Finished difference. Result has 280 places, 213 transitions, 1642 flow [2024-06-04 15:08:20,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1529, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1642, PETRI_PLACES=280, PETRI_TRANSITIONS=213} [2024-06-04 15:08:20,602 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 249 predicate places. [2024-06-04 15:08:20,602 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 213 transitions, 1642 flow [2024-06-04 15:08:20,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:20,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:20,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:08:20,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-04 15:08:20,602 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:08:20,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:20,603 INFO L85 PathProgramCache]: Analyzing trace with hash 615218289, now seen corresponding path program 10 times [2024-06-04 15:08:20,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:20,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633863472] [2024-06-04 15:08:20,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:20,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:20,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:21,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:21,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:21,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633863472] [2024-06-04 15:08:21,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633863472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:21,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:21,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:08:21,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547861986] [2024-06-04 15:08:21,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:21,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:08:21,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:21,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:08:21,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:08:21,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:08:21,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 213 transitions, 1642 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:21,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:21,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:08:21,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:22,117 INFO L124 PetriNetUnfolderBase]: 514/959 cut-off events. [2024-06-04 15:08:22,117 INFO L125 PetriNetUnfolderBase]: For 111196/111196 co-relation queries the response was YES. [2024-06-04 15:08:22,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5072 conditions, 959 events. 514/959 cut-off events. For 111196/111196 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5092 event pairs, 47 based on Foata normal form. 8/965 useless extension candidates. Maximal degree in co-relation 4949. Up to 688 conditions per place. [2024-06-04 15:08:22,126 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 159 selfloop transitions, 61 changer transitions 11/233 dead transitions. [2024-06-04 15:08:22,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 233 transitions, 2186 flow [2024-06-04 15:08:22,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:08:22,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:08:22,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-04 15:08:22,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 15:08:22,127 INFO L175 Difference]: Start difference. First operand has 280 places, 213 transitions, 1642 flow. Second operand 12 states and 144 transitions. [2024-06-04 15:08:22,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 233 transitions, 2186 flow [2024-06-04 15:08:22,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 233 transitions, 2056 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 15:08:22,432 INFO L231 Difference]: Finished difference. Result has 278 places, 210 transitions, 1620 flow [2024-06-04 15:08:22,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1512, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1620, PETRI_PLACES=278, PETRI_TRANSITIONS=210} [2024-06-04 15:08:22,433 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 247 predicate places. [2024-06-04 15:08:22,433 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 210 transitions, 1620 flow [2024-06-04 15:08:22,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:22,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:22,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:08:22,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-04 15:08:22,434 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:08:22,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:22,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1811333693, now seen corresponding path program 11 times [2024-06-04 15:08:22,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:22,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171368184] [2024-06-04 15:08:22,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:22,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:22,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:23,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:23,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:23,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171368184] [2024-06-04 15:08:23,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171368184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:23,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:23,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:08:23,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373508872] [2024-06-04 15:08:23,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:23,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:08:23,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:23,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:08:23,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:08:23,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:08:23,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 210 transitions, 1620 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:23,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:23,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:08:23,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:24,174 INFO L124 PetriNetUnfolderBase]: 511/954 cut-off events. [2024-06-04 15:08:24,175 INFO L125 PetriNetUnfolderBase]: For 121025/121025 co-relation queries the response was YES. [2024-06-04 15:08:24,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5101 conditions, 954 events. 511/954 cut-off events. For 121025/121025 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5045 event pairs, 61 based on Foata normal form. 10/962 useless extension candidates. Maximal degree in co-relation 4979. Up to 752 conditions per place. [2024-06-04 15:08:24,184 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 175 selfloop transitions, 41 changer transitions 11/229 dead transitions. [2024-06-04 15:08:24,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 229 transitions, 2190 flow [2024-06-04 15:08:24,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:08:24,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:08:24,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-04 15:08:24,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-04 15:08:24,185 INFO L175 Difference]: Start difference. First operand has 278 places, 210 transitions, 1620 flow. Second operand 12 states and 140 transitions. [2024-06-04 15:08:24,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 229 transitions, 2190 flow [2024-06-04 15:08:24,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 229 transitions, 2064 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 15:08:24,443 INFO L231 Difference]: Finished difference. Result has 276 places, 207 transitions, 1563 flow [2024-06-04 15:08:24,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1494, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1563, PETRI_PLACES=276, PETRI_TRANSITIONS=207} [2024-06-04 15:08:24,443 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 245 predicate places. [2024-06-04 15:08:24,443 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 207 transitions, 1563 flow [2024-06-04 15:08:24,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:24,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:24,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:08:24,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-04 15:08:24,444 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:08:24,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:24,444 INFO L85 PathProgramCache]: Analyzing trace with hash 611499219, now seen corresponding path program 12 times [2024-06-04 15:08:24,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:24,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760915532] [2024-06-04 15:08:24,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:24,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:24,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:25,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:25,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:25,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760915532] [2024-06-04 15:08:25,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760915532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:25,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:25,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:08:25,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960214303] [2024-06-04 15:08:25,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:25,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:08:25,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:25,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:08:25,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:08:25,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:08:25,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 207 transitions, 1563 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:25,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:25,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:08:25,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:25,915 INFO L124 PetriNetUnfolderBase]: 528/993 cut-off events. [2024-06-04 15:08:25,915 INFO L125 PetriNetUnfolderBase]: For 160599/160599 co-relation queries the response was YES. [2024-06-04 15:08:25,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6302 conditions, 993 events. 528/993 cut-off events. For 160599/160599 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5257 event pairs, 72 based on Foata normal form. 8/999 useless extension candidates. Maximal degree in co-relation 6181. Up to 536 conditions per place. [2024-06-04 15:08:25,925 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 162 selfloop transitions, 57 changer transitions 13/234 dead transitions. [2024-06-04 15:08:25,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 234 transitions, 2409 flow [2024-06-04 15:08:25,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:08:25,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:08:25,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-04 15:08:25,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-04 15:08:25,926 INFO L175 Difference]: Start difference. First operand has 276 places, 207 transitions, 1563 flow. Second operand 12 states and 152 transitions. [2024-06-04 15:08:25,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 234 transitions, 2409 flow [2024-06-04 15:08:26,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 234 transitions, 2319 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 15:08:26,405 INFO L231 Difference]: Finished difference. Result has 274 places, 203 transitions, 1575 flow [2024-06-04 15:08:26,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1477, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1575, PETRI_PLACES=274, PETRI_TRANSITIONS=203} [2024-06-04 15:08:26,406 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 243 predicate places. [2024-06-04 15:08:26,406 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 203 transitions, 1575 flow [2024-06-04 15:08:26,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:26,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:26,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:08:26,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-04 15:08:26,406 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:08:26,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:26,407 INFO L85 PathProgramCache]: Analyzing trace with hash 753602289, now seen corresponding path program 13 times [2024-06-04 15:08:26,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:26,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142264066] [2024-06-04 15:08:26,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:26,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:26,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:27,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:27,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:27,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142264066] [2024-06-04 15:08:27,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142264066] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:27,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:27,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:08:27,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419721859] [2024-06-04 15:08:27,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:27,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:08:27,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:27,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:08:27,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:08:27,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:08:27,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 203 transitions, 1575 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:27,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:27,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:08:27,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:27,953 INFO L124 PetriNetUnfolderBase]: 543/1026 cut-off events. [2024-06-04 15:08:27,954 INFO L125 PetriNetUnfolderBase]: For 210314/210314 co-relation queries the response was YES. [2024-06-04 15:08:27,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7639 conditions, 1026 events. 543/1026 cut-off events. For 210314/210314 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5471 event pairs, 81 based on Foata normal form. 8/1032 useless extension candidates. Maximal degree in co-relation 7519. Up to 703 conditions per place. [2024-06-04 15:08:27,964 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 169 selfloop transitions, 49 changer transitions 10/230 dead transitions. [2024-06-04 15:08:27,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 230 transitions, 2411 flow [2024-06-04 15:08:27,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 15:08:27,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 15:08:27,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 158 transitions. [2024-06-04 15:08:27,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3798076923076923 [2024-06-04 15:08:27,965 INFO L175 Difference]: Start difference. First operand has 274 places, 203 transitions, 1575 flow. Second operand 13 states and 158 transitions. [2024-06-04 15:08:27,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 230 transitions, 2411 flow [2024-06-04 15:08:28,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 230 transitions, 2297 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-04 15:08:28,718 INFO L231 Difference]: Finished difference. Result has 270 places, 200 transitions, 1547 flow [2024-06-04 15:08:28,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1469, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1547, PETRI_PLACES=270, PETRI_TRANSITIONS=200} [2024-06-04 15:08:28,718 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 239 predicate places. [2024-06-04 15:08:28,718 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 200 transitions, 1547 flow [2024-06-04 15:08:28,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:28,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:28,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:08:28,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-04 15:08:28,719 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:08:28,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:28,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1931700023, now seen corresponding path program 14 times [2024-06-04 15:08:28,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:28,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179037187] [2024-06-04 15:08:28,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:28,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:28,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:29,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:29,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:29,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179037187] [2024-06-04 15:08:29,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179037187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:29,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:29,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:08:29,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924420284] [2024-06-04 15:08:29,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:29,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:08:29,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:29,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:08:29,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:08:29,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:08:29,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 200 transitions, 1547 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:29,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:29,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:08:29,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:30,250 INFO L124 PetriNetUnfolderBase]: 533/1008 cut-off events. [2024-06-04 15:08:30,250 INFO L125 PetriNetUnfolderBase]: For 198294/198294 co-relation queries the response was YES. [2024-06-04 15:08:30,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7494 conditions, 1008 events. 533/1008 cut-off events. For 198294/198294 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5376 event pairs, 89 based on Foata normal form. 8/1014 useless extension candidates. Maximal degree in co-relation 7377. Up to 760 conditions per place. [2024-06-04 15:08:30,260 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 153 selfloop transitions, 50 changer transitions 15/220 dead transitions. [2024-06-04 15:08:30,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 220 transitions, 2065 flow [2024-06-04 15:08:30,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:08:30,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:08:30,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-04 15:08:30,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2024-06-04 15:08:30,261 INFO L175 Difference]: Start difference. First operand has 270 places, 200 transitions, 1547 flow. Second operand 12 states and 142 transitions. [2024-06-04 15:08:30,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 220 transitions, 2065 flow [2024-06-04 15:08:30,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 220 transitions, 1934 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-04 15:08:30,901 INFO L231 Difference]: Finished difference. Result has 266 places, 195 transitions, 1492 flow [2024-06-04 15:08:30,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1416, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1492, PETRI_PLACES=266, PETRI_TRANSITIONS=195} [2024-06-04 15:08:30,902 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 235 predicate places. [2024-06-04 15:08:30,902 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 195 transitions, 1492 flow [2024-06-04 15:08:30,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:30,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:30,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:08:30,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-04 15:08:30,902 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:08:30,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:30,903 INFO L85 PathProgramCache]: Analyzing trace with hash 753752019, now seen corresponding path program 15 times [2024-06-04 15:08:30,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:30,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634321642] [2024-06-04 15:08:30,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:30,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:30,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:31,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:31,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:31,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634321642] [2024-06-04 15:08:31,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634321642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:31,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:31,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:08:31,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343778091] [2024-06-04 15:08:31,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:31,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:08:31,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:31,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:08:31,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:08:32,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:08:32,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 195 transitions, 1492 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:32,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:32,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:08:32,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:32,447 INFO L124 PetriNetUnfolderBase]: 525/992 cut-off events. [2024-06-04 15:08:32,448 INFO L125 PetriNetUnfolderBase]: For 209014/209014 co-relation queries the response was YES. [2024-06-04 15:08:32,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7452 conditions, 992 events. 525/992 cut-off events. For 209014/209014 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5230 event pairs, 79 based on Foata normal form. 10/1000 useless extension candidates. Maximal degree in co-relation 7337. Up to 756 conditions per place. [2024-06-04 15:08:32,455 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 157 selfloop transitions, 46 changer transitions 11/216 dead transitions. [2024-06-04 15:08:32,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 216 transitions, 2040 flow [2024-06-04 15:08:32,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:08:32,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:08:32,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-04 15:08:32,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-04 15:08:32,457 INFO L175 Difference]: Start difference. First operand has 266 places, 195 transitions, 1492 flow. Second operand 12 states and 146 transitions. [2024-06-04 15:08:32,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 216 transitions, 2040 flow [2024-06-04 15:08:33,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 216 transitions, 1928 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-04 15:08:33,027 INFO L231 Difference]: Finished difference. Result has 259 places, 192 transitions, 1457 flow [2024-06-04 15:08:33,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1382, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1457, PETRI_PLACES=259, PETRI_TRANSITIONS=192} [2024-06-04 15:08:33,027 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 228 predicate places. [2024-06-04 15:08:33,027 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 192 transitions, 1457 flow [2024-06-04 15:08:33,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:33,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:33,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:08:33,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-04 15:08:33,028 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:08:33,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:33,028 INFO L85 PathProgramCache]: Analyzing trace with hash 759114399, now seen corresponding path program 16 times [2024-06-04 15:08:33,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:33,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28335926] [2024-06-04 15:08:33,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:33,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:33,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:34,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:34,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:34,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28335926] [2024-06-04 15:08:34,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28335926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:34,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:34,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:08:34,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456250285] [2024-06-04 15:08:34,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:34,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:08:34,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:34,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:08:34,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:08:34,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:08:34,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 192 transitions, 1457 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:34,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:34,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:08:34,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:34,597 INFO L124 PetriNetUnfolderBase]: 510/967 cut-off events. [2024-06-04 15:08:34,598 INFO L125 PetriNetUnfolderBase]: For 186519/186519 co-relation queries the response was YES. [2024-06-04 15:08:34,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6945 conditions, 967 events. 510/967 cut-off events. For 186519/186519 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5064 event pairs, 90 based on Foata normal form. 10/975 useless extension candidates. Maximal degree in co-relation 6833. Up to 743 conditions per place. [2024-06-04 15:08:34,606 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 156 selfloop transitions, 43 changer transitions 11/212 dead transitions. [2024-06-04 15:08:34,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 212 transitions, 1993 flow [2024-06-04 15:08:34,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:08:34,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:08:34,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-04 15:08:34,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2024-06-04 15:08:34,632 INFO L175 Difference]: Start difference. First operand has 259 places, 192 transitions, 1457 flow. Second operand 12 states and 142 transitions. [2024-06-04 15:08:34,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 212 transitions, 1993 flow [2024-06-04 15:08:35,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 212 transitions, 1897 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 15:08:35,201 INFO L231 Difference]: Finished difference. Result has 257 places, 189 transitions, 1429 flow [2024-06-04 15:08:35,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1361, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1429, PETRI_PLACES=257, PETRI_TRANSITIONS=189} [2024-06-04 15:08:35,201 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-04 15:08:35,202 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 189 transitions, 1429 flow [2024-06-04 15:08:35,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:35,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:35,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:08:35,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-04 15:08:35,202 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:08:35,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:35,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1427649997, now seen corresponding path program 17 times [2024-06-04 15:08:35,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:35,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450977755] [2024-06-04 15:08:35,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:35,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:35,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:36,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:36,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:36,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450977755] [2024-06-04 15:08:36,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450977755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:36,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:36,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:08:36,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626598022] [2024-06-04 15:08:36,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:36,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:08:36,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:36,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:08:36,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:08:36,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:08:36,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 189 transitions, 1429 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:36,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:36,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:08:36,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:36,641 INFO L124 PetriNetUnfolderBase]: 502/955 cut-off events. [2024-06-04 15:08:36,641 INFO L125 PetriNetUnfolderBase]: For 172662/172662 co-relation queries the response was YES. [2024-06-04 15:08:36,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6788 conditions, 955 events. 502/955 cut-off events. For 172662/172662 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5024 event pairs, 80 based on Foata normal form. 8/961 useless extension candidates. Maximal degree in co-relation 6677. Up to 735 conditions per place. [2024-06-04 15:08:36,650 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 154 selfloop transitions, 41 changer transitions 12/209 dead transitions. [2024-06-04 15:08:36,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 209 transitions, 1926 flow [2024-06-04 15:08:36,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:08:36,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:08:36,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-04 15:08:36,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-04 15:08:36,651 INFO L175 Difference]: Start difference. First operand has 257 places, 189 transitions, 1429 flow. Second operand 12 states and 140 transitions. [2024-06-04 15:08:36,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 209 transitions, 1926 flow [2024-06-04 15:08:37,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 209 transitions, 1836 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 15:08:37,208 INFO L231 Difference]: Finished difference. Result has 256 places, 186 transitions, 1405 flow [2024-06-04 15:08:37,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1339, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1405, PETRI_PLACES=256, PETRI_TRANSITIONS=186} [2024-06-04 15:08:37,208 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 225 predicate places. [2024-06-04 15:08:37,208 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 186 transitions, 1405 flow [2024-06-04 15:08:37,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:37,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:37,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:08:37,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-04 15:08:37,209 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:08:37,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:37,209 INFO L85 PathProgramCache]: Analyzing trace with hash 65365973, now seen corresponding path program 1 times [2024-06-04 15:08:37,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:37,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385626017] [2024-06-04 15:08:37,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:37,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:37,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:38,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:38,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:38,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385626017] [2024-06-04 15:08:38,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385626017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:38,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:38,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:08:38,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494246502] [2024-06-04 15:08:38,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:38,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:08:38,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:38,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:08:38,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:08:38,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:08:38,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 186 transitions, 1405 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:38,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:38,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:08:38,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:38,634 INFO L124 PetriNetUnfolderBase]: 486/919 cut-off events. [2024-06-04 15:08:38,634 INFO L125 PetriNetUnfolderBase]: For 143606/143606 co-relation queries the response was YES. [2024-06-04 15:08:38,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6596 conditions, 919 events. 486/919 cut-off events. For 143606/143606 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4790 event pairs, 84 based on Foata normal form. 2/919 useless extension candidates. Maximal degree in co-relation 6485. Up to 754 conditions per place. [2024-06-04 15:08:38,642 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 159 selfloop transitions, 40 changer transitions 0/201 dead transitions. [2024-06-04 15:08:38,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 201 transitions, 1841 flow [2024-06-04 15:08:38,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:08:38,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:08:38,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-04 15:08:38,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-04 15:08:38,643 INFO L175 Difference]: Start difference. First operand has 256 places, 186 transitions, 1405 flow. Second operand 11 states and 125 transitions. [2024-06-04 15:08:38,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 201 transitions, 1841 flow [2024-06-04 15:08:39,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 201 transitions, 1749 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-04 15:08:39,097 INFO L231 Difference]: Finished difference. Result has 250 places, 187 transitions, 1407 flow [2024-06-04 15:08:39,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1313, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1407, PETRI_PLACES=250, PETRI_TRANSITIONS=187} [2024-06-04 15:08:39,098 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 219 predicate places. [2024-06-04 15:08:39,098 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 187 transitions, 1407 flow [2024-06-04 15:08:39,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:39,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:39,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:08:39,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-04 15:08:39,098 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:08:39,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:39,099 INFO L85 PathProgramCache]: Analyzing trace with hash -141569753, now seen corresponding path program 18 times [2024-06-04 15:08:39,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:39,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752475684] [2024-06-04 15:08:39,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:39,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:39,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:40,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:40,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:40,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752475684] [2024-06-04 15:08:40,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752475684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:40,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:40,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:08:40,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706548393] [2024-06-04 15:08:40,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:40,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:08:40,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:40,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:08:40,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:08:40,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:08:40,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 187 transitions, 1407 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:40,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:40,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:08:40,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:40,620 INFO L124 PetriNetUnfolderBase]: 527/1006 cut-off events. [2024-06-04 15:08:40,620 INFO L125 PetriNetUnfolderBase]: For 205208/205208 co-relation queries the response was YES. [2024-06-04 15:08:40,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7951 conditions, 1006 events. 527/1006 cut-off events. For 205208/205208 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5348 event pairs, 91 based on Foata normal form. 8/1012 useless extension candidates. Maximal degree in co-relation 7843. Up to 706 conditions per place. [2024-06-04 15:08:40,631 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 156 selfloop transitions, 48 changer transitions 7/213 dead transitions. [2024-06-04 15:08:40,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 213 transitions, 2185 flow [2024-06-04 15:08:40,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:08:40,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:08:40,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-04 15:08:40,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-04 15:08:40,632 INFO L175 Difference]: Start difference. First operand has 250 places, 187 transitions, 1407 flow. Second operand 12 states and 150 transitions. [2024-06-04 15:08:40,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 213 transitions, 2185 flow [2024-06-04 15:08:41,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 213 transitions, 2101 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-04 15:08:41,217 INFO L231 Difference]: Finished difference. Result has 253 places, 185 transitions, 1410 flow [2024-06-04 15:08:41,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1323, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1410, PETRI_PLACES=253, PETRI_TRANSITIONS=185} [2024-06-04 15:08:41,217 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 222 predicate places. [2024-06-04 15:08:41,217 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 185 transitions, 1410 flow [2024-06-04 15:08:41,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:41,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:41,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:08:41,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-04 15:08:41,218 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:08:41,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:41,218 INFO L85 PathProgramCache]: Analyzing trace with hash 759108819, now seen corresponding path program 19 times [2024-06-04 15:08:41,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:41,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048573762] [2024-06-04 15:08:41,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:41,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:41,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:42,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:42,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:42,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048573762] [2024-06-04 15:08:42,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048573762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:42,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:42,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:08:42,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845194958] [2024-06-04 15:08:42,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:42,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:08:42,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:42,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:08:42,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:08:42,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:08:42,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 185 transitions, 1410 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:42,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:42,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:08:42,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:42,762 INFO L124 PetriNetUnfolderBase]: 499/950 cut-off events. [2024-06-04 15:08:42,762 INFO L125 PetriNetUnfolderBase]: For 175588/175588 co-relation queries the response was YES. [2024-06-04 15:08:42,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7000 conditions, 950 events. 499/950 cut-off events. For 175588/175588 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4985 event pairs, 89 based on Foata normal form. 8/956 useless extension candidates. Maximal degree in co-relation 6891. Up to 758 conditions per place. [2024-06-04 15:08:42,770 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 152 selfloop transitions, 33 changer transitions 16/203 dead transitions. [2024-06-04 15:08:42,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 203 transitions, 1890 flow [2024-06-04 15:08:42,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:08:42,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:08:42,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-04 15:08:42,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-04 15:08:42,771 INFO L175 Difference]: Start difference. First operand has 253 places, 185 transitions, 1410 flow. Second operand 12 states and 136 transitions. [2024-06-04 15:08:42,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 203 transitions, 1890 flow [2024-06-04 15:08:43,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 203 transitions, 1792 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 15:08:43,238 INFO L231 Difference]: Finished difference. Result has 252 places, 179 transitions, 1348 flow [2024-06-04 15:08:43,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1312, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1348, PETRI_PLACES=252, PETRI_TRANSITIONS=179} [2024-06-04 15:08:43,238 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 221 predicate places. [2024-06-04 15:08:43,238 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 179 transitions, 1348 flow [2024-06-04 15:08:43,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:43,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:43,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:08:43,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-04 15:08:43,239 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:08:43,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:43,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1611882173, now seen corresponding path program 20 times [2024-06-04 15:08:43,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:43,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491776442] [2024-06-04 15:08:43,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:43,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:43,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:44,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:44,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:44,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491776442] [2024-06-04 15:08:44,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491776442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:44,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:44,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:08:44,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495039838] [2024-06-04 15:08:44,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:44,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:08:44,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:44,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:08:44,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:08:44,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:08:44,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 179 transitions, 1348 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:44,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:44,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:08:44,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:44,847 INFO L124 PetriNetUnfolderBase]: 489/928 cut-off events. [2024-06-04 15:08:44,848 INFO L125 PetriNetUnfolderBase]: For 172161/172161 co-relation queries the response was YES. [2024-06-04 15:08:44,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6863 conditions, 928 events. 489/928 cut-off events. For 172161/172161 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4826 event pairs, 69 based on Foata normal form. 8/934 useless extension candidates. Maximal degree in co-relation 6755. Up to 544 conditions per place. [2024-06-04 15:08:44,855 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 149 selfloop transitions, 45 changer transitions 10/206 dead transitions. [2024-06-04 15:08:44,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 206 transitions, 2114 flow [2024-06-04 15:08:44,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 15:08:44,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 15:08:44,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 155 transitions. [2024-06-04 15:08:44,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37259615384615385 [2024-06-04 15:08:44,856 INFO L175 Difference]: Start difference. First operand has 252 places, 179 transitions, 1348 flow. Second operand 13 states and 155 transitions. [2024-06-04 15:08:44,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 206 transitions, 2114 flow [2024-06-04 15:08:45,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 206 transitions, 2014 flow, removed 17 selfloop flow, removed 12 redundant places. [2024-06-04 15:08:45,286 INFO L231 Difference]: Finished difference. Result has 242 places, 176 transitions, 1343 flow [2024-06-04 15:08:45,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1266, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1343, PETRI_PLACES=242, PETRI_TRANSITIONS=176} [2024-06-04 15:08:45,286 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 211 predicate places. [2024-06-04 15:08:45,286 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 176 transitions, 1343 flow [2024-06-04 15:08:45,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:45,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:45,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:08:45,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-04 15:08:45,287 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:08:45,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:45,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1811328113, now seen corresponding path program 21 times [2024-06-04 15:08:45,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:45,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615775109] [2024-06-04 15:08:45,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:45,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:45,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:46,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:46,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:46,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615775109] [2024-06-04 15:08:46,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615775109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:46,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:46,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:08:46,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782273957] [2024-06-04 15:08:46,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:46,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:08:46,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:46,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:08:46,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:08:46,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:08:46,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 176 transitions, 1343 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:46,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:46,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:08:46,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:46,901 INFO L124 PetriNetUnfolderBase]: 479/910 cut-off events. [2024-06-04 15:08:46,902 INFO L125 PetriNetUnfolderBase]: For 154271/154271 co-relation queries the response was YES. [2024-06-04 15:08:46,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6638 conditions, 910 events. 479/910 cut-off events. For 154271/154271 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4730 event pairs, 89 based on Foata normal form. 8/916 useless extension candidates. Maximal degree in co-relation 6535. Up to 727 conditions per place. [2024-06-04 15:08:46,908 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 146 selfloop transitions, 33 changer transitions 13/194 dead transitions. [2024-06-04 15:08:46,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 194 transitions, 1803 flow [2024-06-04 15:08:46,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:08:46,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:08:46,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-04 15:08:46,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-04 15:08:46,909 INFO L175 Difference]: Start difference. First operand has 242 places, 176 transitions, 1343 flow. Second operand 12 states and 135 transitions. [2024-06-04 15:08:46,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 194 transitions, 1803 flow [2024-06-04 15:08:47,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 194 transitions, 1713 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-04 15:08:47,254 INFO L231 Difference]: Finished difference. Result has 238 places, 172 transitions, 1297 flow [2024-06-04 15:08:47,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1253, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1297, PETRI_PLACES=238, PETRI_TRANSITIONS=172} [2024-06-04 15:08:47,254 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 207 predicate places. [2024-06-04 15:08:47,254 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 172 transitions, 1297 flow [2024-06-04 15:08:47,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:47,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:47,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:08:47,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-04 15:08:47,255 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:08:47,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:47,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1612031903, now seen corresponding path program 22 times [2024-06-04 15:08:47,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:47,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371510726] [2024-06-04 15:08:47,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:47,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:47,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:48,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:48,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:48,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371510726] [2024-06-04 15:08:48,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371510726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:48,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:48,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:08:48,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552880600] [2024-06-04 15:08:48,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:48,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:08:48,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:48,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:08:48,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:08:48,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:08:48,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 172 transitions, 1297 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:48,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:48,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:08:48,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:48,813 INFO L124 PetriNetUnfolderBase]: 446/843 cut-off events. [2024-06-04 15:08:48,813 INFO L125 PetriNetUnfolderBase]: For 118629/118629 co-relation queries the response was YES. [2024-06-04 15:08:48,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5382 conditions, 843 events. 446/843 cut-off events. For 118629/118629 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4273 event pairs, 64 based on Foata normal form. 10/851 useless extension candidates. Maximal degree in co-relation 5281. Up to 619 conditions per place. [2024-06-04 15:08:48,819 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 139 selfloop transitions, 38 changer transitions 14/193 dead transitions. [2024-06-04 15:08:48,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 193 transitions, 1793 flow [2024-06-04 15:08:48,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:08:48,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:08:48,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-04 15:08:48,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2024-06-04 15:08:48,820 INFO L175 Difference]: Start difference. First operand has 238 places, 172 transitions, 1297 flow. Second operand 12 states and 142 transitions. [2024-06-04 15:08:48,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 193 transitions, 1793 flow [2024-06-04 15:08:49,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 193 transitions, 1711 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-04 15:08:49,013 INFO L231 Difference]: Finished difference. Result has 232 places, 167 transitions, 1265 flow [2024-06-04 15:08:49,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1219, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1265, PETRI_PLACES=232, PETRI_TRANSITIONS=167} [2024-06-04 15:08:49,013 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 201 predicate places. [2024-06-04 15:08:49,014 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 167 transitions, 1265 flow [2024-06-04 15:08:49,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:49,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:49,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:08:49,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-04 15:08:49,014 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:08:49,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:49,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1617394283, now seen corresponding path program 23 times [2024-06-04 15:08:49,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:49,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091127477] [2024-06-04 15:08:49,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:49,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:49,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:50,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:50,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:50,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091127477] [2024-06-04 15:08:50,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091127477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:50,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:50,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:08:50,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137906113] [2024-06-04 15:08:50,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:50,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:08:50,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:50,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:08:50,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:08:50,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:08:50,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 167 transitions, 1265 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:50,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:50,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:08:50,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:50,480 INFO L124 PetriNetUnfolderBase]: 429/812 cut-off events. [2024-06-04 15:08:50,481 INFO L125 PetriNetUnfolderBase]: For 103225/103225 co-relation queries the response was YES. [2024-06-04 15:08:50,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4935 conditions, 812 events. 429/812 cut-off events. For 103225/103225 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4085 event pairs, 61 based on Foata normal form. 10/820 useless extension candidates. Maximal degree in co-relation 4837. Up to 600 conditions per place. [2024-06-04 15:08:50,487 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 137 selfloop transitions, 37 changer transitions 11/187 dead transitions. [2024-06-04 15:08:50,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 187 transitions, 1743 flow [2024-06-04 15:08:50,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:08:50,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:08:50,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-04 15:08:50,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-04 15:08:50,489 INFO L175 Difference]: Start difference. First operand has 232 places, 167 transitions, 1265 flow. Second operand 12 states and 138 transitions. [2024-06-04 15:08:50,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 187 transitions, 1743 flow [2024-06-04 15:08:50,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 187 transitions, 1659 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-04 15:08:50,689 INFO L231 Difference]: Finished difference. Result has 225 places, 164 transitions, 1238 flow [2024-06-04 15:08:50,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1181, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1238, PETRI_PLACES=225, PETRI_TRANSITIONS=164} [2024-06-04 15:08:50,690 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 194 predicate places. [2024-06-04 15:08:50,690 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 164 transitions, 1238 flow [2024-06-04 15:08:50,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:50,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:50,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:08:50,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-04 15:08:50,691 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:08:50,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:50,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1617388703, now seen corresponding path program 24 times [2024-06-04 15:08:50,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:50,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774657217] [2024-06-04 15:08:50,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:50,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:50,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:51,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:51,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:51,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774657217] [2024-06-04 15:08:51,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774657217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:51,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:51,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:08:51,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666786486] [2024-06-04 15:08:51,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:51,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:08:51,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:51,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:08:51,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:08:51,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:08:51,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 164 transitions, 1238 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:51,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:51,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:08:51,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:52,272 INFO L124 PetriNetUnfolderBase]: 395/746 cut-off events. [2024-06-04 15:08:52,272 INFO L125 PetriNetUnfolderBase]: For 63965/63965 co-relation queries the response was YES. [2024-06-04 15:08:52,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3892 conditions, 746 events. 395/746 cut-off events. For 63965/63965 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 3702 event pairs, 51 based on Foata normal form. 8/752 useless extension candidates. Maximal degree in co-relation 3797. Up to 566 conditions per place. [2024-06-04 15:08:52,278 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 136 selfloop transitions, 29 changer transitions 15/182 dead transitions. [2024-06-04 15:08:52,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 182 transitions, 1672 flow [2024-06-04 15:08:52,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:08:52,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:08:52,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-04 15:08:52,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463541666666667 [2024-06-04 15:08:52,279 INFO L175 Difference]: Start difference. First operand has 225 places, 164 transitions, 1238 flow. Second operand 12 states and 133 transitions. [2024-06-04 15:08:52,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 182 transitions, 1672 flow [2024-06-04 15:08:52,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 182 transitions, 1594 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 15:08:52,430 INFO L231 Difference]: Finished difference. Result has 223 places, 159 transitions, 1192 flow [2024-06-04 15:08:52,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1160, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1192, PETRI_PLACES=223, PETRI_TRANSITIONS=159} [2024-06-04 15:08:52,430 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 192 predicate places. [2024-06-04 15:08:52,430 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 159 transitions, 1192 flow [2024-06-04 15:08:52,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:52,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:52,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:08:52,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-04 15:08:52,431 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:08:52,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:52,431 INFO L85 PathProgramCache]: Analyzing trace with hash -920243879, now seen corresponding path program 25 times [2024-06-04 15:08:52,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:52,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621307704] [2024-06-04 15:08:52,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:52,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:52,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:53,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:53,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:53,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621307704] [2024-06-04 15:08:53,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621307704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:53,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:53,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:08:53,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652563024] [2024-06-04 15:08:53,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:53,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:08:53,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:53,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:08:53,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:08:53,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:08:53,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 159 transitions, 1192 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:53,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:53,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:08:53,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:54,019 INFO L124 PetriNetUnfolderBase]: 415/786 cut-off events. [2024-06-04 15:08:54,019 INFO L125 PetriNetUnfolderBase]: For 93720/93720 co-relation queries the response was YES. [2024-06-04 15:08:54,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4911 conditions, 786 events. 415/786 cut-off events. For 93720/93720 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 3904 event pairs, 55 based on Foata normal form. 8/792 useless extension candidates. Maximal degree in co-relation 4817. Up to 547 conditions per place. [2024-06-04 15:08:54,026 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 137 selfloop transitions, 38 changer transitions 7/184 dead transitions. [2024-06-04 15:08:54,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 184 transitions, 1870 flow [2024-06-04 15:08:54,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:08:54,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:08:54,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-04 15:08:54,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-04 15:08:54,027 INFO L175 Difference]: Start difference. First operand has 223 places, 159 transitions, 1192 flow. Second operand 12 states and 145 transitions. [2024-06-04 15:08:54,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 184 transitions, 1870 flow [2024-06-04 15:08:54,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 184 transitions, 1778 flow, removed 17 selfloop flow, removed 11 redundant places. [2024-06-04 15:08:54,196 INFO L231 Difference]: Finished difference. Result has 213 places, 157 transitions, 1185 flow [2024-06-04 15:08:54,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1118, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1185, PETRI_PLACES=213, PETRI_TRANSITIONS=157} [2024-06-04 15:08:54,196 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 182 predicate places. [2024-06-04 15:08:54,196 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 157 transitions, 1185 flow [2024-06-04 15:08:54,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:54,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:54,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:08:54,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-04 15:08:54,197 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:08:54,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:54,197 INFO L85 PathProgramCache]: Analyzing trace with hash -497752573, now seen corresponding path program 26 times [2024-06-04 15:08:54,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:54,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875573775] [2024-06-04 15:08:54,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:54,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:54,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:55,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:55,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:55,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875573775] [2024-06-04 15:08:55,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875573775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:55,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:55,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:08:55,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081458868] [2024-06-04 15:08:55,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:55,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:08:55,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:55,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:08:55,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:08:55,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:08:55,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 157 transitions, 1185 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:55,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:55,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:08:55,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:55,521 INFO L124 PetriNetUnfolderBase]: 384/725 cut-off events. [2024-06-04 15:08:55,521 INFO L125 PetriNetUnfolderBase]: For 62530/62530 co-relation queries the response was YES. [2024-06-04 15:08:55,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3781 conditions, 725 events. 384/725 cut-off events. For 62530/62530 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3527 event pairs, 46 based on Foata normal form. 10/733 useless extension candidates. Maximal degree in co-relation 3691. Up to 547 conditions per place. [2024-06-04 15:08:55,526 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 126 selfloop transitions, 34 changer transitions 15/177 dead transitions. [2024-06-04 15:08:55,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 177 transitions, 1637 flow [2024-06-04 15:08:55,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:08:55,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:08:55,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-04 15:08:55,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-04 15:08:55,527 INFO L175 Difference]: Start difference. First operand has 213 places, 157 transitions, 1185 flow. Second operand 12 states and 139 transitions. [2024-06-04 15:08:55,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 177 transitions, 1637 flow [2024-06-04 15:08:55,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 177 transitions, 1559 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 15:08:55,649 INFO L231 Difference]: Finished difference. Result has 212 places, 152 transitions, 1145 flow [2024-06-04 15:08:55,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1107, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1145, PETRI_PLACES=212, PETRI_TRANSITIONS=152} [2024-06-04 15:08:55,649 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 181 predicate places. [2024-06-04 15:08:55,650 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 152 transitions, 1145 flow [2024-06-04 15:08:55,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:55,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:55,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:08:55,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-04 15:08:55,650 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:08:55,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:55,650 INFO L85 PathProgramCache]: Analyzing trace with hash -490124217, now seen corresponding path program 2 times [2024-06-04 15:08:55,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:55,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803242197] [2024-06-04 15:08:55,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:55,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:55,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:56,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:56,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:56,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803242197] [2024-06-04 15:08:56,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803242197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:56,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:56,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:08:56,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585364346] [2024-06-04 15:08:56,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:56,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:08:56,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:56,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:08:56,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:08:56,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:08:56,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 152 transitions, 1145 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:56,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:56,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:08:56,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:56,980 INFO L124 PetriNetUnfolderBase]: 362/679 cut-off events. [2024-06-04 15:08:56,981 INFO L125 PetriNetUnfolderBase]: For 39103/39103 co-relation queries the response was YES. [2024-06-04 15:08:56,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3530 conditions, 679 events. 362/679 cut-off events. For 39103/39103 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3273 event pairs, 46 based on Foata normal form. 2/679 useless extension candidates. Maximal degree in co-relation 3441. Up to 563 conditions per place. [2024-06-04 15:08:56,986 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 132 selfloop transitions, 33 changer transitions 0/167 dead transitions. [2024-06-04 15:08:56,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 167 transitions, 1515 flow [2024-06-04 15:08:56,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:08:56,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:08:56,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-04 15:08:56,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-04 15:08:56,987 INFO L175 Difference]: Start difference. First operand has 212 places, 152 transitions, 1145 flow. Second operand 11 states and 123 transitions. [2024-06-04 15:08:56,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 167 transitions, 1515 flow [2024-06-04 15:08:57,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 167 transitions, 1435 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-04 15:08:57,104 INFO L231 Difference]: Finished difference. Result has 204 places, 153 transitions, 1147 flow [2024-06-04 15:08:57,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1065, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1147, PETRI_PLACES=204, PETRI_TRANSITIONS=153} [2024-06-04 15:08:57,104 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 173 predicate places. [2024-06-04 15:08:57,104 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 153 transitions, 1147 flow [2024-06-04 15:08:57,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:57,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:57,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:08:57,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-04 15:08:57,105 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:08:57,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:57,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1430268843, now seen corresponding path program 3 times [2024-06-04 15:08:57,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:57,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052492660] [2024-06-04 15:08:57,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:57,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:57,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:58,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:58,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:58,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052492660] [2024-06-04 15:08:58,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052492660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:58,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:58,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:08:58,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866011375] [2024-06-04 15:08:58,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:58,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:08:58,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:58,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:08:58,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:08:58,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:08:58,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 153 transitions, 1147 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:58,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:58,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:08:58,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:58,588 INFO L124 PetriNetUnfolderBase]: 372/697 cut-off events. [2024-06-04 15:08:58,588 INFO L125 PetriNetUnfolderBase]: For 36214/36214 co-relation queries the response was YES. [2024-06-04 15:08:58,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3577 conditions, 697 events. 372/697 cut-off events. For 36214/36214 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3373 event pairs, 48 based on Foata normal form. 2/697 useless extension candidates. Maximal degree in co-relation 3491. Up to 615 conditions per place. [2024-06-04 15:08:58,593 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 140 selfloop transitions, 28 changer transitions 0/170 dead transitions. [2024-06-04 15:08:58,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 170 transitions, 1547 flow [2024-06-04 15:08:58,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:08:58,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:08:58,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-04 15:08:58,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-04 15:08:58,594 INFO L175 Difference]: Start difference. First operand has 204 places, 153 transitions, 1147 flow. Second operand 11 states and 124 transitions. [2024-06-04 15:08:58,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 170 transitions, 1547 flow [2024-06-04 15:08:58,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 170 transitions, 1471 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-04 15:08:58,695 INFO L231 Difference]: Finished difference. Result has 206 places, 156 transitions, 1167 flow [2024-06-04 15:08:58,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1075, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1167, PETRI_PLACES=206, PETRI_TRANSITIONS=156} [2024-06-04 15:08:58,695 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 175 predicate places. [2024-06-04 15:08:58,695 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 156 transitions, 1167 flow [2024-06-04 15:08:58,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:58,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:58,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:08:58,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-04 15:08:58,696 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:08:58,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:58,696 INFO L85 PathProgramCache]: Analyzing trace with hash -697204093, now seen corresponding path program 27 times [2024-06-04 15:08:58,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:58,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077828929] [2024-06-04 15:08:58,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:58,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:58,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:59,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:59,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:59,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077828929] [2024-06-04 15:08:59,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077828929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:59,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:59,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:08:59,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419224777] [2024-06-04 15:08:59,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:59,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:08:59,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:59,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:08:59,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:08:59,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:08:59,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 156 transitions, 1167 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:59,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:59,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:08:59,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:00,266 INFO L124 PetriNetUnfolderBase]: 413/784 cut-off events. [2024-06-04 15:09:00,267 INFO L125 PetriNetUnfolderBase]: For 78293/78293 co-relation queries the response was YES. [2024-06-04 15:09:00,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4710 conditions, 784 events. 413/784 cut-off events. For 78293/78293 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3870 event pairs, 59 based on Foata normal form. 8/790 useless extension candidates. Maximal degree in co-relation 4623. Up to 506 conditions per place. [2024-06-04 15:09:00,272 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 130 selfloop transitions, 40 changer transitions 10/182 dead transitions. [2024-06-04 15:09:00,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 182 transitions, 1815 flow [2024-06-04 15:09:00,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:09:00,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:09:00,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-04 15:09:00,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-04 15:09:00,273 INFO L175 Difference]: Start difference. First operand has 206 places, 156 transitions, 1167 flow. Second operand 12 states and 148 transitions. [2024-06-04 15:09:00,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 182 transitions, 1815 flow [2024-06-04 15:09:00,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 182 transitions, 1756 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-04 15:09:00,406 INFO L231 Difference]: Finished difference. Result has 211 places, 153 transitions, 1175 flow [2024-06-04 15:09:00,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1108, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1175, PETRI_PLACES=211, PETRI_TRANSITIONS=153} [2024-06-04 15:09:00,406 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 180 predicate places. [2024-06-04 15:09:00,406 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 153 transitions, 1175 flow [2024-06-04 15:09:00,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:00,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:00,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:00,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-04 15:09:00,407 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:09:00,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:00,407 INFO L85 PathProgramCache]: Analyzing trace with hash -697059943, now seen corresponding path program 28 times [2024-06-04 15:09:00,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:00,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993528685] [2024-06-04 15:09:00,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:00,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:00,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:01,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:01,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:01,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993528685] [2024-06-04 15:09:01,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993528685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:01,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:01,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:09:01,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368144416] [2024-06-04 15:09:01,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:01,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:09:01,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:01,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:09:01,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:09:01,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:09:01,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 153 transitions, 1175 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:01,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:01,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:09:01,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:02,082 INFO L124 PetriNetUnfolderBase]: 436/833 cut-off events. [2024-06-04 15:09:02,082 INFO L125 PetriNetUnfolderBase]: For 107173/107173 co-relation queries the response was YES. [2024-06-04 15:09:02,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5737 conditions, 833 events. 436/833 cut-off events. For 107173/107173 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4144 event pairs, 72 based on Foata normal form. 8/839 useless extension candidates. Maximal degree in co-relation 5649. Up to 581 conditions per place. [2024-06-04 15:09:02,088 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 131 selfloop transitions, 40 changer transitions 7/180 dead transitions. [2024-06-04 15:09:02,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 180 transitions, 1824 flow [2024-06-04 15:09:02,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:09:02,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:09:02,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-04 15:09:02,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-04 15:09:02,089 INFO L175 Difference]: Start difference. First operand has 211 places, 153 transitions, 1175 flow. Second operand 12 states and 149 transitions. [2024-06-04 15:09:02,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 180 transitions, 1824 flow [2024-06-04 15:09:02,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 180 transitions, 1738 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-04 15:09:02,276 INFO L231 Difference]: Finished difference. Result has 209 places, 152 transitions, 1172 flow [2024-06-04 15:09:02,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1095, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1172, PETRI_PLACES=209, PETRI_TRANSITIONS=152} [2024-06-04 15:09:02,276 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 178 predicate places. [2024-06-04 15:09:02,276 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 152 transitions, 1172 flow [2024-06-04 15:09:02,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:02,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:02,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:02,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-04 15:09:02,277 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:09:02,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:02,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1430259543, now seen corresponding path program 4 times [2024-06-04 15:09:02,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:02,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971458811] [2024-06-04 15:09:02,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:02,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:02,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:03,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:03,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:03,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971458811] [2024-06-04 15:09:03,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971458811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:03,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:03,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:09:03,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550605327] [2024-06-04 15:09:03,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:03,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:09:03,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:03,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:09:03,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:09:03,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:09:03,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 152 transitions, 1172 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:03,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:03,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:09:03,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:03,691 INFO L124 PetriNetUnfolderBase]: 429/816 cut-off events. [2024-06-04 15:09:03,691 INFO L125 PetriNetUnfolderBase]: For 92144/92144 co-relation queries the response was YES. [2024-06-04 15:09:03,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5784 conditions, 816 events. 429/816 cut-off events. For 92144/92144 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4081 event pairs, 85 based on Foata normal form. 2/816 useless extension candidates. Maximal degree in co-relation 5697. Up to 711 conditions per place. [2024-06-04 15:09:03,697 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 137 selfloop transitions, 30 changer transitions 0/169 dead transitions. [2024-06-04 15:09:03,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 169 transitions, 1710 flow [2024-06-04 15:09:03,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:09:03,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:09:03,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-04 15:09:03,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-04 15:09:03,699 INFO L175 Difference]: Start difference. First operand has 209 places, 152 transitions, 1172 flow. Second operand 11 states and 125 transitions. [2024-06-04 15:09:03,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 169 transitions, 1710 flow [2024-06-04 15:09:03,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 169 transitions, 1624 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 15:09:03,901 INFO L231 Difference]: Finished difference. Result has 208 places, 154 transitions, 1182 flow [2024-06-04 15:09:03,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1088, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1182, PETRI_PLACES=208, PETRI_TRANSITIONS=154} [2024-06-04 15:09:03,902 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 177 predicate places. [2024-06-04 15:09:03,902 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 154 transitions, 1182 flow [2024-06-04 15:09:03,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:03,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:03,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:03,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-04 15:09:03,903 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:09:03,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:03,903 INFO L85 PathProgramCache]: Analyzing trace with hash -691691983, now seen corresponding path program 29 times [2024-06-04 15:09:03,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:03,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290727980] [2024-06-04 15:09:03,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:03,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:03,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:05,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:05,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:05,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290727980] [2024-06-04 15:09:05,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290727980] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:05,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:05,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:09:05,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648616982] [2024-06-04 15:09:05,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:05,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:09:05,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:05,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:09:05,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:09:05,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:09:05,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 154 transitions, 1182 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:05,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:05,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:09:05,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:05,524 INFO L124 PetriNetUnfolderBase]: 438/839 cut-off events. [2024-06-04 15:09:05,524 INFO L125 PetriNetUnfolderBase]: For 106752/106752 co-relation queries the response was YES. [2024-06-04 15:09:05,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5719 conditions, 839 events. 438/839 cut-off events. For 106752/106752 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4258 event pairs, 90 based on Foata normal form. 10/847 useless extension candidates. Maximal degree in co-relation 5633. Up to 682 conditions per place. [2024-06-04 15:09:05,531 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 128 selfloop transitions, 32 changer transitions 11/173 dead transitions. [2024-06-04 15:09:05,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 173 transitions, 1620 flow [2024-06-04 15:09:05,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:09:05,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:09:05,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-04 15:09:05,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-04 15:09:05,532 INFO L175 Difference]: Start difference. First operand has 208 places, 154 transitions, 1182 flow. Second operand 12 states and 138 transitions. [2024-06-04 15:09:05,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 173 transitions, 1620 flow [2024-06-04 15:09:05,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 173 transitions, 1571 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-04 15:09:05,719 INFO L231 Difference]: Finished difference. Result has 213 places, 151 transitions, 1180 flow [2024-06-04 15:09:05,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1133, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1180, PETRI_PLACES=213, PETRI_TRANSITIONS=151} [2024-06-04 15:09:05,719 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 182 predicate places. [2024-06-04 15:09:05,719 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 151 transitions, 1180 flow [2024-06-04 15:09:05,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:05,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:05,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:05,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-04 15:09:05,720 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:09:05,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:05,721 INFO L85 PathProgramCache]: Analyzing trace with hash -691697563, now seen corresponding path program 30 times [2024-06-04 15:09:05,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:05,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953962589] [2024-06-04 15:09:05,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:05,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:05,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:06,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:06,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:06,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953962589] [2024-06-04 15:09:06,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953962589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:06,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:06,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:09:06,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831913703] [2024-06-04 15:09:06,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:06,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:09:06,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:06,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:09:06,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:09:07,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:09:07,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 151 transitions, 1180 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:07,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:07,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:09:07,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:07,365 INFO L124 PetriNetUnfolderBase]: 404/773 cut-off events. [2024-06-04 15:09:07,365 INFO L125 PetriNetUnfolderBase]: For 83647/83647 co-relation queries the response was YES. [2024-06-04 15:09:07,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4888 conditions, 773 events. 404/773 cut-off events. For 83647/83647 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3798 event pairs, 68 based on Foata normal form. 8/779 useless extension candidates. Maximal degree in co-relation 4800. Up to 626 conditions per place. [2024-06-04 15:09:07,371 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 125 selfloop transitions, 29 changer transitions 13/169 dead transitions. [2024-06-04 15:09:07,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 169 transitions, 1584 flow [2024-06-04 15:09:07,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:09:07,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:09:07,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-04 15:09:07,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-04 15:09:07,372 INFO L175 Difference]: Start difference. First operand has 213 places, 151 transitions, 1180 flow. Second operand 12 states and 135 transitions. [2024-06-04 15:09:07,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 169 transitions, 1584 flow [2024-06-04 15:09:07,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 169 transitions, 1516 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 15:09:07,523 INFO L231 Difference]: Finished difference. Result has 211 places, 147 transitions, 1145 flow [2024-06-04 15:09:07,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1112, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1145, PETRI_PLACES=211, PETRI_TRANSITIONS=147} [2024-06-04 15:09:07,524 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 180 predicate places. [2024-06-04 15:09:07,524 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 147 transitions, 1145 flow [2024-06-04 15:09:07,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:07,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:07,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:07,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-04 15:09:07,524 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:09:07,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:07,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1201778359, now seen corresponding path program 31 times [2024-06-04 15:09:07,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:07,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488761349] [2024-06-04 15:09:07,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:07,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:08,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:08,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:08,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488761349] [2024-06-04 15:09:08,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488761349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:08,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:08,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:09:08,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622647655] [2024-06-04 15:09:08,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:08,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:09:08,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:08,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:09:08,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:09:08,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:09:08,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 147 transitions, 1145 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:08,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:08,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:09:08,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:08,876 INFO L124 PetriNetUnfolderBase]: 406/775 cut-off events. [2024-06-04 15:09:08,876 INFO L125 PetriNetUnfolderBase]: For 86788/86788 co-relation queries the response was YES. [2024-06-04 15:09:08,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4903 conditions, 775 events. 406/775 cut-off events. For 86788/86788 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3816 event pairs, 70 based on Foata normal form. 10/783 useless extension candidates. Maximal degree in co-relation 4816. Up to 639 conditions per place. [2024-06-04 15:09:08,882 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 127 selfloop transitions, 24 changer transitions 16/169 dead transitions. [2024-06-04 15:09:08,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 169 transitions, 1591 flow [2024-06-04 15:09:08,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:09:08,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:09:08,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-04 15:09:08,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-04 15:09:08,883 INFO L175 Difference]: Start difference. First operand has 211 places, 147 transitions, 1145 flow. Second operand 12 states and 138 transitions. [2024-06-04 15:09:08,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 169 transitions, 1591 flow [2024-06-04 15:09:09,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 169 transitions, 1517 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-04 15:09:09,015 INFO L231 Difference]: Finished difference. Result has 206 places, 143 transitions, 1094 flow [2024-06-04 15:09:09,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1075, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1094, PETRI_PLACES=206, PETRI_TRANSITIONS=143} [2024-06-04 15:09:09,016 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 175 predicate places. [2024-06-04 15:09:09,016 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 143 transitions, 1094 flow [2024-06-04 15:09:09,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:09,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:09,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:09,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-04 15:09:09,016 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:09:09,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:09,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1437678153, now seen corresponding path program 5 times [2024-06-04 15:09:09,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:09,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70230463] [2024-06-04 15:09:09,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:09,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:09,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:09,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:09,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:09,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70230463] [2024-06-04 15:09:09,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70230463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:09,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:09,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:09:09,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307161465] [2024-06-04 15:09:09,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:09,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:09:09,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:09,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:09:09,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:09:10,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:09:10,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 143 transitions, 1094 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:10,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:10,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:09:10,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:10,347 INFO L124 PetriNetUnfolderBase]: 367/702 cut-off events. [2024-06-04 15:09:10,348 INFO L125 PetriNetUnfolderBase]: For 56651/56651 co-relation queries the response was YES. [2024-06-04 15:09:10,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4317 conditions, 702 events. 367/702 cut-off events. For 56651/56651 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3371 event pairs, 65 based on Foata normal form. 2/702 useless extension candidates. Maximal degree in co-relation 4232. Up to 628 conditions per place. [2024-06-04 15:09:10,353 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 130 selfloop transitions, 25 changer transitions 0/157 dead transitions. [2024-06-04 15:09:10,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 157 transitions, 1434 flow [2024-06-04 15:09:10,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:09:10,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:09:10,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-04 15:09:10,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-04 15:09:10,354 INFO L175 Difference]: Start difference. First operand has 206 places, 143 transitions, 1094 flow. Second operand 11 states and 124 transitions. [2024-06-04 15:09:10,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 157 transitions, 1434 flow [2024-06-04 15:09:10,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 157 transitions, 1366 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-04 15:09:10,463 INFO L231 Difference]: Finished difference. Result has 201 places, 143 transitions, 1080 flow [2024-06-04 15:09:10,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1026, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1080, PETRI_PLACES=201, PETRI_TRANSITIONS=143} [2024-06-04 15:09:10,463 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 170 predicate places. [2024-06-04 15:09:10,463 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 143 transitions, 1080 flow [2024-06-04 15:09:10,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:10,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:10,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:10,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-04 15:09:10,464 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:09:10,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:10,464 INFO L85 PathProgramCache]: Analyzing trace with hash -697054363, now seen corresponding path program 32 times [2024-06-04 15:09:10,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:10,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605848744] [2024-06-04 15:09:10,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:10,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:10,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:11,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:11,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:11,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605848744] [2024-06-04 15:09:11,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605848744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:11,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:11,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:09:11,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562582477] [2024-06-04 15:09:11,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:11,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:09:11,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:11,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:09:11,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:09:11,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:09:11,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 143 transitions, 1080 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:11,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:11,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:09:11,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:12,091 INFO L124 PetriNetUnfolderBase]: 354/679 cut-off events. [2024-06-04 15:09:12,091 INFO L125 PetriNetUnfolderBase]: For 50272/50272 co-relation queries the response was YES. [2024-06-04 15:09:12,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3491 conditions, 679 events. 354/679 cut-off events. For 50272/50272 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3267 event pairs, 44 based on Foata normal form. 10/687 useless extension candidates. Maximal degree in co-relation 3408. Up to 508 conditions per place. [2024-06-04 15:09:12,096 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 115 selfloop transitions, 30 changer transitions 17/164 dead transitions. [2024-06-04 15:09:12,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 164 transitions, 1500 flow [2024-06-04 15:09:12,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 15:09:12,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 15:09:12,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 146 transitions. [2024-06-04 15:09:12,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35096153846153844 [2024-06-04 15:09:12,097 INFO L175 Difference]: Start difference. First operand has 201 places, 143 transitions, 1080 flow. Second operand 13 states and 146 transitions. [2024-06-04 15:09:12,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 164 transitions, 1500 flow [2024-06-04 15:09:12,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 164 transitions, 1442 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-04 15:09:12,201 INFO L231 Difference]: Finished difference. Result has 203 places, 137 transitions, 1046 flow [2024-06-04 15:09:12,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1022, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1046, PETRI_PLACES=203, PETRI_TRANSITIONS=137} [2024-06-04 15:09:12,201 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 172 predicate places. [2024-06-04 15:09:12,201 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 137 transitions, 1046 flow [2024-06-04 15:09:12,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:12,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:12,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:12,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-04 15:09:12,202 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:09:12,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:12,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1194426709, now seen corresponding path program 33 times [2024-06-04 15:09:12,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:12,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470314152] [2024-06-04 15:09:12,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:12,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:12,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:13,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:13,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:13,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470314152] [2024-06-04 15:09:13,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470314152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:13,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:13,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:09:13,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436895561] [2024-06-04 15:09:13,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:13,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:09:13,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:13,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:09:13,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:09:13,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:09:13,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 137 transitions, 1046 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:13,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:13,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:09:13,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:13,670 INFO L124 PetriNetUnfolderBase]: 343/658 cut-off events. [2024-06-04 15:09:13,671 INFO L125 PetriNetUnfolderBase]: For 51686/51686 co-relation queries the response was YES. [2024-06-04 15:09:13,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3422 conditions, 658 events. 343/658 cut-off events. For 51686/51686 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3126 event pairs, 44 based on Foata normal form. 10/666 useless extension candidates. Maximal degree in co-relation 3338. Up to 509 conditions per place. [2024-06-04 15:09:13,675 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 116 selfloop transitions, 30 changer transitions 11/159 dead transitions. [2024-06-04 15:09:13,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 159 transitions, 1458 flow [2024-06-04 15:09:13,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:09:13,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:09:13,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-04 15:09:13,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2024-06-04 15:09:13,676 INFO L175 Difference]: Start difference. First operand has 203 places, 137 transitions, 1046 flow. Second operand 12 states and 142 transitions. [2024-06-04 15:09:13,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 159 transitions, 1458 flow [2024-06-04 15:09:13,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 159 transitions, 1388 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-04 15:09:13,760 INFO L231 Difference]: Finished difference. Result has 192 places, 134 transitions, 1019 flow [2024-06-04 15:09:13,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=976, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1019, PETRI_PLACES=192, PETRI_TRANSITIONS=134} [2024-06-04 15:09:13,761 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 161 predicate places. [2024-06-04 15:09:13,761 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 134 transitions, 1019 flow [2024-06-04 15:09:13,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:13,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:13,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:13,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-04 15:09:13,761 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:09:13,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:13,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1555334247, now seen corresponding path program 34 times [2024-06-04 15:09:13,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:13,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93878689] [2024-06-04 15:09:13,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:13,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:13,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:14,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:14,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:14,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93878689] [2024-06-04 15:09:14,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93878689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:14,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:14,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:09:14,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678292601] [2024-06-04 15:09:14,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:14,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:09:14,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:14,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:09:14,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:09:15,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:09:15,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 134 transitions, 1019 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:15,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:15,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:09:15,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:15,460 INFO L124 PetriNetUnfolderBase]: 335/646 cut-off events. [2024-06-04 15:09:15,460 INFO L125 PetriNetUnfolderBase]: For 45968/45968 co-relation queries the response was YES. [2024-06-04 15:09:15,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3324 conditions, 646 events. 335/646 cut-off events. For 45968/45968 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3066 event pairs, 42 based on Foata normal form. 10/654 useless extension candidates. Maximal degree in co-relation 3244. Up to 469 conditions per place. [2024-06-04 15:09:15,464 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 102 selfloop transitions, 41 changer transitions 11/156 dead transitions. [2024-06-04 15:09:15,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 156 transitions, 1425 flow [2024-06-04 15:09:15,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 15:09:15,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 15:09:15,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 151 transitions. [2024-06-04 15:09:15,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629807692307692 [2024-06-04 15:09:15,466 INFO L175 Difference]: Start difference. First operand has 192 places, 134 transitions, 1019 flow. Second operand 13 states and 151 transitions. [2024-06-04 15:09:15,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 156 transitions, 1425 flow [2024-06-04 15:09:15,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 156 transitions, 1353 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-04 15:09:15,539 INFO L231 Difference]: Finished difference. Result has 191 places, 131 transitions, 1019 flow [2024-06-04 15:09:15,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=951, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1019, PETRI_PLACES=191, PETRI_TRANSITIONS=131} [2024-06-04 15:09:15,540 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 160 predicate places. [2024-06-04 15:09:15,540 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 131 transitions, 1019 flow [2024-06-04 15:09:15,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:15,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:15,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:15,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-04 15:09:15,541 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:09:15,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:15,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1694012127, now seen corresponding path program 35 times [2024-06-04 15:09:15,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:15,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385124059] [2024-06-04 15:09:15,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:15,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:15,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:16,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:16,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:16,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385124059] [2024-06-04 15:09:16,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385124059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:16,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:16,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:09:16,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784486436] [2024-06-04 15:09:16,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:16,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:09:16,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:16,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:09:16,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:09:16,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:09:16,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 131 transitions, 1019 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:16,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:16,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:09:16,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:17,195 INFO L124 PetriNetUnfolderBase]: 365/708 cut-off events. [2024-06-04 15:09:17,195 INFO L125 PetriNetUnfolderBase]: For 60478/60478 co-relation queries the response was YES. [2024-06-04 15:09:17,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4207 conditions, 708 events. 365/708 cut-off events. For 60478/60478 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3420 event pairs, 55 based on Foata normal form. 8/714 useless extension candidates. Maximal degree in co-relation 4128. Up to 391 conditions per place. [2024-06-04 15:09:17,200 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 94 selfloop transitions, 60 changer transitions 10/166 dead transitions. [2024-06-04 15:09:17,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 166 transitions, 1660 flow [2024-06-04 15:09:17,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:09:17,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:09:17,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-04 15:09:17,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-04 15:09:17,201 INFO L175 Difference]: Start difference. First operand has 191 places, 131 transitions, 1019 flow. Second operand 12 states and 150 transitions. [2024-06-04 15:09:17,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 166 transitions, 1660 flow [2024-06-04 15:09:17,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 166 transitions, 1550 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-06-04 15:09:17,285 INFO L231 Difference]: Finished difference. Result has 193 places, 137 transitions, 1172 flow [2024-06-04 15:09:17,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1172, PETRI_PLACES=193, PETRI_TRANSITIONS=137} [2024-06-04 15:09:17,285 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 162 predicate places. [2024-06-04 15:09:17,285 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 137 transitions, 1172 flow [2024-06-04 15:09:17,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:17,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:17,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:17,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-04 15:09:17,286 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:09:17,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:17,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1637189689, now seen corresponding path program 36 times [2024-06-04 15:09:17,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:17,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253673107] [2024-06-04 15:09:17,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:17,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:17,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:18,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:18,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:18,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253673107] [2024-06-04 15:09:18,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253673107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:18,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:18,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:09:18,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045764095] [2024-06-04 15:09:18,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:18,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:09:18,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:18,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:09:18,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:09:18,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:09:18,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 137 transitions, 1172 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:18,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:18,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:09:18,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:18,809 INFO L124 PetriNetUnfolderBase]: 359/698 cut-off events. [2024-06-04 15:09:18,809 INFO L125 PetriNetUnfolderBase]: For 62951/62951 co-relation queries the response was YES. [2024-06-04 15:09:18,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4397 conditions, 698 events. 359/698 cut-off events. For 62951/62951 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3386 event pairs, 61 based on Foata normal form. 10/706 useless extension candidates. Maximal degree in co-relation 4314. Up to 502 conditions per place. [2024-06-04 15:09:18,814 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 92 selfloop transitions, 52 changer transitions 11/157 dead transitions. [2024-06-04 15:09:18,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 157 transitions, 1578 flow [2024-06-04 15:09:18,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:09:18,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:09:18,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-04 15:09:18,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-04 15:09:18,815 INFO L175 Difference]: Start difference. First operand has 193 places, 137 transitions, 1172 flow. Second operand 12 states and 140 transitions. [2024-06-04 15:09:18,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 157 transitions, 1578 flow [2024-06-04 15:09:18,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 157 transitions, 1528 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-04 15:09:18,909 INFO L231 Difference]: Finished difference. Result has 195 places, 134 transitions, 1208 flow [2024-06-04 15:09:18,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1122, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1208, PETRI_PLACES=195, PETRI_TRANSITIONS=134} [2024-06-04 15:09:18,910 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 164 predicate places. [2024-06-04 15:09:18,910 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 134 transitions, 1208 flow [2024-06-04 15:09:18,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:18,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:18,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:18,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-04 15:09:18,910 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:09:18,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:18,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1549971867, now seen corresponding path program 37 times [2024-06-04 15:09:18,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:18,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041641463] [2024-06-04 15:09:18,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:18,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:18,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:20,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:20,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:20,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041641463] [2024-06-04 15:09:20,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041641463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:20,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:20,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:09:20,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940101237] [2024-06-04 15:09:20,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:20,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:09:20,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:20,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:09:20,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:09:20,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:09:20,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 134 transitions, 1208 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:20,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:20,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:09:20,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:20,618 INFO L124 PetriNetUnfolderBase]: 351/686 cut-off events. [2024-06-04 15:09:20,619 INFO L125 PetriNetUnfolderBase]: For 61120/61120 co-relation queries the response was YES. [2024-06-04 15:09:20,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4357 conditions, 686 events. 351/686 cut-off events. For 61120/61120 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3304 event pairs, 65 based on Foata normal form. 10/694 useless extension candidates. Maximal degree in co-relation 4276. Up to 543 conditions per place. [2024-06-04 15:09:20,624 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 109 selfloop transitions, 31 changer transitions 11/153 dead transitions. [2024-06-04 15:09:20,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 153 transitions, 1602 flow [2024-06-04 15:09:20,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:09:20,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:09:20,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-04 15:09:20,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-04 15:09:20,625 INFO L175 Difference]: Start difference. First operand has 195 places, 134 transitions, 1208 flow. Second operand 12 states and 137 transitions. [2024-06-04 15:09:20,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 153 transitions, 1602 flow [2024-06-04 15:09:20,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 153 transitions, 1494 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 15:09:20,731 INFO L231 Difference]: Finished difference. Result has 193 places, 131 transitions, 1143 flow [2024-06-04 15:09:20,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1100, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1143, PETRI_PLACES=193, PETRI_TRANSITIONS=131} [2024-06-04 15:09:20,731 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 162 predicate places. [2024-06-04 15:09:20,731 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 131 transitions, 1143 flow [2024-06-04 15:09:20,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:20,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:20,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:20,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-04 15:09:20,732 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:09:20,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:20,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1194421129, now seen corresponding path program 38 times [2024-06-04 15:09:20,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:20,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11233936] [2024-06-04 15:09:20,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:20,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:20,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:21,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:21,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:21,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11233936] [2024-06-04 15:09:21,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11233936] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:21,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:21,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:09:21,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413063378] [2024-06-04 15:09:21,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:21,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:09:21,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:21,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:09:21,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:09:21,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:09:21,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 131 transitions, 1143 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:21,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:21,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:09:21,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:22,187 INFO L124 PetriNetUnfolderBase]: 368/725 cut-off events. [2024-06-04 15:09:22,187 INFO L125 PetriNetUnfolderBase]: For 73489/73489 co-relation queries the response was YES. [2024-06-04 15:09:22,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5040 conditions, 725 events. 368/725 cut-off events. For 73489/73489 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3552 event pairs, 74 based on Foata normal form. 8/731 useless extension candidates. Maximal degree in co-relation 4960. Up to 517 conditions per place. [2024-06-04 15:09:22,193 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 114 selfloop transitions, 32 changer transitions 8/156 dead transitions. [2024-06-04 15:09:22,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 156 transitions, 1707 flow [2024-06-04 15:09:22,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:09:22,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:09:22,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-04 15:09:22,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 15:09:22,194 INFO L175 Difference]: Start difference. First operand has 193 places, 131 transitions, 1143 flow. Second operand 12 states and 144 transitions. [2024-06-04 15:09:22,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 156 transitions, 1707 flow [2024-06-04 15:09:22,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 156 transitions, 1627 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-04 15:09:22,341 INFO L231 Difference]: Finished difference. Result has 191 places, 128 transitions, 1108 flow [2024-06-04 15:09:22,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1073, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1108, PETRI_PLACES=191, PETRI_TRANSITIONS=128} [2024-06-04 15:09:22,342 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 160 predicate places. [2024-06-04 15:09:22,342 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 128 transitions, 1108 flow [2024-06-04 15:09:22,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:22,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:22,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:22,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-04 15:09:22,343 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:09:22,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:22,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1697587047, now seen corresponding path program 39 times [2024-06-04 15:09:22,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:22,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726982955] [2024-06-04 15:09:22,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:22,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:23,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:23,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:23,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726982955] [2024-06-04 15:09:23,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726982955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:23,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:23,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:09:23,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399313725] [2024-06-04 15:09:23,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:23,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:09:23,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:23,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:09:23,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:09:23,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:09:23,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 128 transitions, 1108 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:23,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:23,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:09:23,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:23,873 INFO L124 PetriNetUnfolderBase]: 383/758 cut-off events. [2024-06-04 15:09:23,873 INFO L125 PetriNetUnfolderBase]: For 85375/85375 co-relation queries the response was YES. [2024-06-04 15:09:23,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5603 conditions, 758 events. 383/758 cut-off events. For 85375/85375 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3751 event pairs, 78 based on Foata normal form. 8/764 useless extension candidates. Maximal degree in co-relation 5524. Up to 315 conditions per place. [2024-06-04 15:09:23,879 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 87 selfloop transitions, 52 changer transitions 13/154 dead transitions. [2024-06-04 15:09:23,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 154 transitions, 1660 flow [2024-06-04 15:09:23,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:09:23,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:09:23,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-04 15:09:23,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-04 15:09:23,880 INFO L175 Difference]: Start difference. First operand has 191 places, 128 transitions, 1108 flow. Second operand 12 states and 148 transitions. [2024-06-04 15:09:23,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 154 transitions, 1660 flow [2024-06-04 15:09:23,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 154 transitions, 1588 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-04 15:09:23,993 INFO L231 Difference]: Finished difference. Result has 189 places, 124 transitions, 1125 flow [2024-06-04 15:09:23,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1040, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1125, PETRI_PLACES=189, PETRI_TRANSITIONS=124} [2024-06-04 15:09:23,994 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 158 predicate places. [2024-06-04 15:09:24,000 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 124 transitions, 1125 flow [2024-06-04 15:09:24,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:24,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:24,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:24,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-04 15:09:24,001 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:09:24,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:24,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1693867977, now seen corresponding path program 40 times [2024-06-04 15:09:24,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:24,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734883244] [2024-06-04 15:09:24,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:24,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:24,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:25,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:25,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:25,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734883244] [2024-06-04 15:09:25,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734883244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:25,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:25,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:09:25,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067608788] [2024-06-04 15:09:25,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:25,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:09:25,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:25,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:09:25,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:09:25,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:09:25,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 124 transitions, 1125 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:25,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:25,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:09:25,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:25,631 INFO L124 PetriNetUnfolderBase]: 369/732 cut-off events. [2024-06-04 15:09:25,632 INFO L125 PetriNetUnfolderBase]: For 82641/82641 co-relation queries the response was YES. [2024-06-04 15:09:25,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5544 conditions, 732 events. 369/732 cut-off events. For 82641/82641 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3621 event pairs, 76 based on Foata normal form. 8/738 useless extension candidates. Maximal degree in co-relation 5466. Up to 448 conditions per place. [2024-06-04 15:09:25,637 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 87 selfloop transitions, 53 changer transitions 7/149 dead transitions. [2024-06-04 15:09:25,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 149 transitions, 1665 flow [2024-06-04 15:09:25,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:09:25,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:09:25,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-04 15:09:25,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-04 15:09:25,638 INFO L175 Difference]: Start difference. First operand has 189 places, 124 transitions, 1125 flow. Second operand 12 states and 147 transitions. [2024-06-04 15:09:25,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 149 transitions, 1665 flow [2024-06-04 15:09:25,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 149 transitions, 1565 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-04 15:09:25,766 INFO L231 Difference]: Finished difference. Result has 184 places, 122 transitions, 1126 flow [2024-06-04 15:09:25,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1033, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1126, PETRI_PLACES=184, PETRI_TRANSITIONS=122} [2024-06-04 15:09:25,766 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 153 predicate places. [2024-06-04 15:09:25,767 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 122 transitions, 1126 flow [2024-06-04 15:09:25,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:25,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:25,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:25,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-04 15:09:25,767 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:09:25,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:25,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1693862397, now seen corresponding path program 41 times [2024-06-04 15:09:25,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:25,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093100410] [2024-06-04 15:09:25,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:25,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:25,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:26,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:26,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:26,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093100410] [2024-06-04 15:09:26,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093100410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:26,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:26,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:09:26,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342669413] [2024-06-04 15:09:26,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:26,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:09:26,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:26,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:09:26,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:09:26,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:09:26,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 122 transitions, 1126 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:26,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:26,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:09:26,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:27,169 INFO L124 PetriNetUnfolderBase]: 338/671 cut-off events. [2024-06-04 15:09:27,170 INFO L125 PetriNetUnfolderBase]: For 62410/62410 co-relation queries the response was YES. [2024-06-04 15:09:27,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4679 conditions, 671 events. 338/671 cut-off events. For 62410/62410 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3229 event pairs, 71 based on Foata normal form. 10/679 useless extension candidates. Maximal degree in co-relation 4604. Up to 473 conditions per place. [2024-06-04 15:09:27,174 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 83 selfloop transitions, 41 changer transitions 16/142 dead transitions. [2024-06-04 15:09:27,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 142 transitions, 1498 flow [2024-06-04 15:09:27,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:09:27,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:09:27,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-04 15:09:27,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-04 15:09:27,175 INFO L175 Difference]: Start difference. First operand has 184 places, 122 transitions, 1126 flow. Second operand 12 states and 140 transitions. [2024-06-04 15:09:27,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 142 transitions, 1498 flow [2024-06-04 15:09:27,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 142 transitions, 1384 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-04 15:09:27,264 INFO L231 Difference]: Finished difference. Result has 183 places, 116 transitions, 1051 flow [2024-06-04 15:09:27,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1012, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1051, PETRI_PLACES=183, PETRI_TRANSITIONS=116} [2024-06-04 15:09:27,265 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 152 predicate places. [2024-06-04 15:09:27,265 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 116 transitions, 1051 flow [2024-06-04 15:09:27,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:27,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:27,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:27,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-04 15:09:27,265 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:09:27,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:27,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1549977447, now seen corresponding path program 42 times [2024-06-04 15:09:27,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:27,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754699164] [2024-06-04 15:09:27,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:27,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:27,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:28,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:28,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:28,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754699164] [2024-06-04 15:09:28,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754699164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:28,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:28,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:09:28,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055384009] [2024-06-04 15:09:28,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:28,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:09:28,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:28,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:09:28,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:09:28,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:09:28,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 116 transitions, 1051 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:28,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:28,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:09:28,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:28,888 INFO L124 PetriNetUnfolderBase]: 323/642 cut-off events. [2024-06-04 15:09:28,888 INFO L125 PetriNetUnfolderBase]: For 58950/58950 co-relation queries the response was YES. [2024-06-04 15:09:28,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4492 conditions, 642 events. 323/642 cut-off events. For 58950/58950 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3056 event pairs, 71 based on Foata normal form. 8/648 useless extension candidates. Maximal degree in co-relation 4418. Up to 509 conditions per place. [2024-06-04 15:09:28,893 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 93 selfloop transitions, 26 changer transitions 13/134 dead transitions. [2024-06-04 15:09:28,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 134 transitions, 1383 flow [2024-06-04 15:09:28,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:09:28,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:09:28,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-04 15:09:28,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489583333333333 [2024-06-04 15:09:28,894 INFO L175 Difference]: Start difference. First operand has 183 places, 116 transitions, 1051 flow. Second operand 12 states and 134 transitions. [2024-06-04 15:09:28,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 134 transitions, 1383 flow [2024-06-04 15:09:28,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 134 transitions, 1289 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-04 15:09:28,991 INFO L231 Difference]: Finished difference. Result has 173 places, 112 transitions, 974 flow [2024-06-04 15:09:28,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=957, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=974, PETRI_PLACES=173, PETRI_TRANSITIONS=112} [2024-06-04 15:09:28,991 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 142 predicate places. [2024-06-04 15:09:28,992 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 112 transitions, 974 flow [2024-06-04 15:09:28,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:28,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:28,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:28,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-04 15:09:28,992 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:09:28,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:28,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1437686089, now seen corresponding path program 43 times [2024-06-04 15:09:28,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:28,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735595263] [2024-06-04 15:09:28,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:28,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:29,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:29,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:29,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:29,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735595263] [2024-06-04 15:09:29,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735595263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:29,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:29,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:09:29,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988497857] [2024-06-04 15:09:29,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:29,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:09:29,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:29,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:09:29,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:09:30,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:09:30,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 112 transitions, 974 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:30,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:30,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:09:30,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:30,377 INFO L124 PetriNetUnfolderBase]: 290/575 cut-off events. [2024-06-04 15:09:30,377 INFO L125 PetriNetUnfolderBase]: For 40528/40528 co-relation queries the response was YES. [2024-06-04 15:09:30,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3526 conditions, 575 events. 290/575 cut-off events. For 40528/40528 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2636 event pairs, 56 based on Foata normal form. 10/583 useless extension candidates. Maximal degree in co-relation 3456. Up to 457 conditions per place. [2024-06-04 15:09:30,381 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 97 selfloop transitions, 22 changer transitions 11/132 dead transitions. [2024-06-04 15:09:30,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 132 transitions, 1324 flow [2024-06-04 15:09:30,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:09:30,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:09:30,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-04 15:09:30,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-04 15:09:30,382 INFO L175 Difference]: Start difference. First operand has 173 places, 112 transitions, 974 flow. Second operand 12 states and 136 transitions. [2024-06-04 15:09:30,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 132 transitions, 1324 flow [2024-06-04 15:09:30,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 132 transitions, 1256 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-04 15:09:30,441 INFO L231 Difference]: Finished difference. Result has 167 places, 109 transitions, 922 flow [2024-06-04 15:09:30,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=910, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=922, PETRI_PLACES=167, PETRI_TRANSITIONS=109} [2024-06-04 15:09:30,441 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 136 predicate places. [2024-06-04 15:09:30,441 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 109 transitions, 922 flow [2024-06-04 15:09:30,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:30,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:30,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:30,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-04 15:09:30,442 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:09:30,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:30,442 INFO L85 PathProgramCache]: Analyzing trace with hash 391764329, now seen corresponding path program 44 times [2024-06-04 15:09:30,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:30,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712524518] [2024-06-04 15:09:30,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:30,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:31,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:31,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:31,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712524518] [2024-06-04 15:09:31,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712524518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:31,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:31,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:09:31,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533356137] [2024-06-04 15:09:31,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:31,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:09:31,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:31,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:09:31,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:09:31,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:09:31,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 109 transitions, 922 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:31,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:31,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:09:31,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:31,752 INFO L124 PetriNetUnfolderBase]: 276/553 cut-off events. [2024-06-04 15:09:31,752 INFO L125 PetriNetUnfolderBase]: For 34920/34920 co-relation queries the response was YES. [2024-06-04 15:09:31,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3301 conditions, 553 events. 276/553 cut-off events. For 34920/34920 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2526 event pairs, 46 based on Foata normal form. 8/559 useless extension candidates. Maximal degree in co-relation 3234. Up to 394 conditions per place. [2024-06-04 15:09:31,755 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 78 selfloop transitions, 36 changer transitions 11/127 dead transitions. [2024-06-04 15:09:31,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 127 transitions, 1238 flow [2024-06-04 15:09:31,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:09:31,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:09:31,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-04 15:09:31,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-04 15:09:31,756 INFO L175 Difference]: Start difference. First operand has 167 places, 109 transitions, 922 flow. Second operand 12 states and 136 transitions. [2024-06-04 15:09:31,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 127 transitions, 1238 flow [2024-06-04 15:09:31,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 127 transitions, 1184 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-04 15:09:31,814 INFO L231 Difference]: Finished difference. Result has 164 places, 106 transitions, 926 flow [2024-06-04 15:09:31,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=926, PETRI_PLACES=164, PETRI_TRANSITIONS=106} [2024-06-04 15:09:31,814 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 133 predicate places. [2024-06-04 15:09:31,814 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 106 transitions, 926 flow [2024-06-04 15:09:31,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:31,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:31,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:31,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-04 15:09:31,815 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:09:31,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:31,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1000487299, now seen corresponding path program 45 times [2024-06-04 15:09:31,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:31,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141229454] [2024-06-04 15:09:31,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:31,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:31,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:32,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:32,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:32,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141229454] [2024-06-04 15:09:32,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141229454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:32,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:32,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:09:32,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339615779] [2024-06-04 15:09:32,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:32,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:09:32,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:32,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:09:32,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:09:32,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:09:32,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 106 transitions, 926 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:32,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:32,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:09:32,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:33,269 INFO L124 PetriNetUnfolderBase]: 273/548 cut-off events. [2024-06-04 15:09:33,269 INFO L125 PetriNetUnfolderBase]: For 36224/36224 co-relation queries the response was YES. [2024-06-04 15:09:33,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3278 conditions, 548 events. 273/548 cut-off events. For 36224/36224 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2501 event pairs, 54 based on Foata normal form. 10/556 useless extension candidates. Maximal degree in co-relation 3212. Up to 429 conditions per place. [2024-06-04 15:09:33,272 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 88 selfloop transitions, 24 changer transitions 11/125 dead transitions. [2024-06-04 15:09:33,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 125 transitions, 1250 flow [2024-06-04 15:09:33,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:09:33,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:09:33,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-04 15:09:33,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489583333333333 [2024-06-04 15:09:33,273 INFO L175 Difference]: Start difference. First operand has 164 places, 106 transitions, 926 flow. Second operand 12 states and 134 transitions. [2024-06-04 15:09:33,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 125 transitions, 1250 flow [2024-06-04 15:09:33,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 125 transitions, 1172 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 15:09:33,320 INFO L231 Difference]: Finished difference. Result has 160 places, 103 transitions, 874 flow [2024-06-04 15:09:33,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=848, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=874, PETRI_PLACES=160, PETRI_TRANSITIONS=103} [2024-06-04 15:09:33,321 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 129 predicate places. [2024-06-04 15:09:33,321 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 103 transitions, 874 flow [2024-06-04 15:09:33,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:33,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:33,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:33,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-04 15:09:33,321 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:09:33,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:33,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1000481719, now seen corresponding path program 46 times [2024-06-04 15:09:33,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:33,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310092134] [2024-06-04 15:09:33,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:33,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:33,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:34,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:34,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:34,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310092134] [2024-06-04 15:09:34,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310092134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:34,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:34,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:09:34,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671354269] [2024-06-04 15:09:34,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:34,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:09:34,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:34,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:09:34,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:09:34,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:09:34,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 103 transitions, 874 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:34,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:34,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:09:34,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:34,786 INFO L124 PetriNetUnfolderBase]: 261/528 cut-off events. [2024-06-04 15:09:34,787 INFO L125 PetriNetUnfolderBase]: For 31091/31091 co-relation queries the response was YES. [2024-06-04 15:09:34,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3110 conditions, 528 events. 261/528 cut-off events. For 31091/31091 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2388 event pairs, 50 based on Foata normal form. 8/534 useless extension candidates. Maximal degree in co-relation 3046. Up to 419 conditions per place. [2024-06-04 15:09:34,790 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 85 selfloop transitions, 21 changer transitions 13/121 dead transitions. [2024-06-04 15:09:34,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 121 transitions, 1176 flow [2024-06-04 15:09:34,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:09:34,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:09:34,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-04 15:09:34,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3411458333333333 [2024-06-04 15:09:34,790 INFO L175 Difference]: Start difference. First operand has 160 places, 103 transitions, 874 flow. Second operand 12 states and 131 transitions. [2024-06-04 15:09:34,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 121 transitions, 1176 flow [2024-06-04 15:09:34,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 121 transitions, 1118 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-04 15:09:34,834 INFO L231 Difference]: Finished difference. Result has 158 places, 99 transitions, 824 flow [2024-06-04 15:09:34,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=818, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=824, PETRI_PLACES=158, PETRI_TRANSITIONS=99} [2024-06-04 15:09:34,835 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 127 predicate places. [2024-06-04 15:09:34,835 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 99 transitions, 824 flow [2024-06-04 15:09:34,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:34,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:34,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:34,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-04 15:09:34,836 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:09:34,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:34,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1637339419, now seen corresponding path program 47 times [2024-06-04 15:09:34,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:34,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814439362] [2024-06-04 15:09:34,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:34,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:34,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:35,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:35,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:35,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814439362] [2024-06-04 15:09:35,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814439362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:35,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:35,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:09:35,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796866957] [2024-06-04 15:09:35,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:35,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:09:35,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:35,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:09:35,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:09:35,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:09:35,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 99 transitions, 824 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:35,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:35,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:09:35,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:36,362 INFO L124 PetriNetUnfolderBase]: 290/591 cut-off events. [2024-06-04 15:09:36,363 INFO L125 PetriNetUnfolderBase]: For 44100/44100 co-relation queries the response was YES. [2024-06-04 15:09:36,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3867 conditions, 591 events. 290/591 cut-off events. For 44100/44100 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2750 event pairs, 75 based on Foata normal form. 8/597 useless extension candidates. Maximal degree in co-relation 3804. Up to 273 conditions per place. [2024-06-04 15:09:36,366 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 71 selfloop transitions, 41 changer transitions 10/124 dead transitions. [2024-06-04 15:09:36,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 124 transitions, 1266 flow [2024-06-04 15:09:36,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:09:36,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:09:36,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-04 15:09:36,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-06-04 15:09:36,367 INFO L175 Difference]: Start difference. First operand has 158 places, 99 transitions, 824 flow. Second operand 12 states and 143 transitions. [2024-06-04 15:09:36,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 124 transitions, 1266 flow [2024-06-04 15:09:36,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 124 transitions, 1214 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-04 15:09:36,430 INFO L231 Difference]: Finished difference. Result has 153 places, 96 transitions, 841 flow [2024-06-04 15:09:36,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=841, PETRI_PLACES=153, PETRI_TRANSITIONS=96} [2024-06-04 15:09:36,430 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 122 predicate places. [2024-06-04 15:09:36,430 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 96 transitions, 841 flow [2024-06-04 15:09:36,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:36,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:36,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:36,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-04 15:09:36,431 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:09:36,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:36,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1637195269, now seen corresponding path program 48 times [2024-06-04 15:09:36,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:36,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721888999] [2024-06-04 15:09:36,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:36,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:37,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:37,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:37,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721888999] [2024-06-04 15:09:37,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721888999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:37,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:37,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:09:37,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704601577] [2024-06-04 15:09:37,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:37,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:09:37,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:37,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:09:37,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:09:37,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:09:37,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 96 transitions, 841 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:37,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:37,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:09:37,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:37,974 INFO L124 PetriNetUnfolderBase]: 280/573 cut-off events. [2024-06-04 15:09:37,975 INFO L125 PetriNetUnfolderBase]: For 42363/42363 co-relation queries the response was YES. [2024-06-04 15:09:37,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3819 conditions, 573 events. 280/573 cut-off events. For 42363/42363 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2655 event pairs, 71 based on Foata normal form. 8/579 useless extension candidates. Maximal degree in co-relation 3758. Up to 410 conditions per place. [2024-06-04 15:09:37,978 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 62 selfloop transitions, 38 changer transitions 13/115 dead transitions. [2024-06-04 15:09:37,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 115 transitions, 1133 flow [2024-06-04 15:09:37,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:09:37,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:09:37,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-04 15:09:37,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-04 15:09:37,979 INFO L175 Difference]: Start difference. First operand has 153 places, 96 transitions, 841 flow. Second operand 12 states and 136 transitions. [2024-06-04 15:09:37,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 115 transitions, 1133 flow [2024-06-04 15:09:38,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 115 transitions, 1055 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 15:09:38,032 INFO L231 Difference]: Finished difference. Result has 150 places, 91 transitions, 797 flow [2024-06-04 15:09:38,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=763, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=797, PETRI_PLACES=150, PETRI_TRANSITIONS=91} [2024-06-04 15:09:38,032 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 119 predicate places. [2024-06-04 15:09:38,032 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 91 transitions, 797 flow [2024-06-04 15:09:38,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:38,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:38,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:38,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-04 15:09:38,033 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:09:38,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:38,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1555483977, now seen corresponding path program 49 times [2024-06-04 15:09:38,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:38,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522446286] [2024-06-04 15:09:38,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:38,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:38,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:38,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:38,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:38,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522446286] [2024-06-04 15:09:38,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522446286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:38,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:38,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:09:38,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073302788] [2024-06-04 15:09:38,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:38,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:09:38,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:38,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:09:38,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:09:39,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:09:39,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 91 transitions, 797 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:39,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:39,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:09:39,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:39,429 INFO L124 PetriNetUnfolderBase]: 249/508 cut-off events. [2024-06-04 15:09:39,429 INFO L125 PetriNetUnfolderBase]: For 31448/31448 co-relation queries the response was YES. [2024-06-04 15:09:39,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3189 conditions, 508 events. 249/508 cut-off events. For 31448/31448 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2257 event pairs, 53 based on Foata normal form. 8/514 useless extension candidates. Maximal degree in co-relation 3130. Up to 350 conditions per place. [2024-06-04 15:09:39,431 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 62 selfloop transitions, 29 changer transitions 17/110 dead transitions. [2024-06-04 15:09:39,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 110 transitions, 1077 flow [2024-06-04 15:09:39,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:09:39,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:09:39,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-04 15:09:39,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-04 15:09:39,432 INFO L175 Difference]: Start difference. First operand has 150 places, 91 transitions, 797 flow. Second operand 12 states and 135 transitions. [2024-06-04 15:09:39,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 110 transitions, 1077 flow [2024-06-04 15:09:39,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 110 transitions, 985 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-04 15:09:39,464 INFO L231 Difference]: Finished difference. Result has 142 places, 85 transitions, 723 flow [2024-06-04 15:09:39,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=723, PETRI_PLACES=142, PETRI_TRANSITIONS=85} [2024-06-04 15:09:39,465 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 111 predicate places. [2024-06-04 15:09:39,465 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 85 transitions, 723 flow [2024-06-04 15:09:39,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:39,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:39,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:39,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-04 15:09:39,465 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:09:39,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:39,466 INFO L85 PathProgramCache]: Analyzing trace with hash 253585395, now seen corresponding path program 6 times [2024-06-04 15:09:39,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:39,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169258786] [2024-06-04 15:09:39,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:39,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:39,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:40,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:40,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:40,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169258786] [2024-06-04 15:09:40,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169258786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:40,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:40,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:09:40,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842148078] [2024-06-04 15:09:40,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:40,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:09:40,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:40,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:09:40,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:09:40,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:09:40,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 85 transitions, 723 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:40,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:40,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:09:40,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:40,825 INFO L124 PetriNetUnfolderBase]: 234/471 cut-off events. [2024-06-04 15:09:40,825 INFO L125 PetriNetUnfolderBase]: For 21868/21868 co-relation queries the response was YES. [2024-06-04 15:09:40,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2945 conditions, 471 events. 234/471 cut-off events. For 21868/21868 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2013 event pairs, 57 based on Foata normal form. 2/471 useless extension candidates. Maximal degree in co-relation 2890. Up to 420 conditions per place. [2024-06-04 15:09:40,828 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 78 selfloop transitions, 21 changer transitions 0/101 dead transitions. [2024-06-04 15:09:40,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 101 transitions, 997 flow [2024-06-04 15:09:40,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:09:40,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:09:40,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-04 15:09:40,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-04 15:09:40,829 INFO L175 Difference]: Start difference. First operand has 142 places, 85 transitions, 723 flow. Second operand 11 states and 119 transitions. [2024-06-04 15:09:40,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 101 transitions, 997 flow [2024-06-04 15:09:40,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 101 transitions, 923 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-04 15:09:40,852 INFO L231 Difference]: Finished difference. Result has 131 places, 88 transitions, 741 flow [2024-06-04 15:09:40,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=741, PETRI_PLACES=131, PETRI_TRANSITIONS=88} [2024-06-04 15:09:40,852 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 100 predicate places. [2024-06-04 15:09:40,852 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 88 transitions, 741 flow [2024-06-04 15:09:40,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:40,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:40,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:40,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-04 15:09:40,853 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:09:40,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:40,853 INFO L85 PathProgramCache]: Analyzing trace with hash 245960759, now seen corresponding path program 50 times [2024-06-04 15:09:40,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:40,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596989561] [2024-06-04 15:09:40,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:40,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:41,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:41,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:41,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596989561] [2024-06-04 15:09:41,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596989561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:41,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:41,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:09:41,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509680067] [2024-06-04 15:09:41,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:41,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:09:41,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:41,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:09:41,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:09:41,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:09:41,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 88 transitions, 741 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:41,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:41,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:09:41,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:42,328 INFO L124 PetriNetUnfolderBase]: 246/499 cut-off events. [2024-06-04 15:09:42,328 INFO L125 PetriNetUnfolderBase]: For 20086/20086 co-relation queries the response was YES. [2024-06-04 15:09:42,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2890 conditions, 499 events. 246/499 cut-off events. For 20086/20086 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2175 event pairs, 49 based on Foata normal form. 8/505 useless extension candidates. Maximal degree in co-relation 2840. Up to 231 conditions per place. [2024-06-04 15:09:42,331 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 65 selfloop transitions, 37 changer transitions 7/111 dead transitions. [2024-06-04 15:09:42,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 111 transitions, 1107 flow [2024-06-04 15:09:42,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:09:42,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:09:42,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-04 15:09:42,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-04 15:09:42,332 INFO L175 Difference]: Start difference. First operand has 131 places, 88 transitions, 741 flow. Second operand 12 states and 139 transitions. [2024-06-04 15:09:42,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 111 transitions, 1107 flow [2024-06-04 15:09:42,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 111 transitions, 1047 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-04 15:09:42,351 INFO L231 Difference]: Finished difference. Result has 135 places, 86 transitions, 740 flow [2024-06-04 15:09:42,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=740, PETRI_PLACES=135, PETRI_TRANSITIONS=86} [2024-06-04 15:09:42,352 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 104 predicate places. [2024-06-04 15:09:42,352 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 86 transitions, 740 flow [2024-06-04 15:09:42,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:42,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:42,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:42,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-04 15:09:42,352 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:09:42,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:42,353 INFO L85 PathProgramCache]: Analyzing trace with hash -258278187, now seen corresponding path program 7 times [2024-06-04 15:09:42,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:42,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600678763] [2024-06-04 15:09:42,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:42,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:42,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:43,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:43,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:43,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600678763] [2024-06-04 15:09:43,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600678763] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:43,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:43,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:09:43,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305222789] [2024-06-04 15:09:43,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:43,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:09:43,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:43,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:09:43,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:09:43,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:09:43,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 86 transitions, 740 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:43,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:43,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:09:43,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:43,570 INFO L124 PetriNetUnfolderBase]: 232/469 cut-off events. [2024-06-04 15:09:43,570 INFO L125 PetriNetUnfolderBase]: For 17699/17699 co-relation queries the response was YES. [2024-06-04 15:09:43,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2830 conditions, 469 events. 232/469 cut-off events. For 17699/17699 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2004 event pairs, 59 based on Foata normal form. 2/469 useless extension candidates. Maximal degree in co-relation 2780. Up to 422 conditions per place. [2024-06-04 15:09:43,573 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 81 selfloop transitions, 17 changer transitions 0/100 dead transitions. [2024-06-04 15:09:43,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 100 transitions, 980 flow [2024-06-04 15:09:43,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:09:43,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:09:43,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-04 15:09:43,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-04 15:09:43,574 INFO L175 Difference]: Start difference. First operand has 135 places, 86 transitions, 740 flow. Second operand 11 states and 115 transitions. [2024-06-04 15:09:43,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 100 transitions, 980 flow [2024-06-04 15:09:43,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 100 transitions, 910 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 15:09:43,595 INFO L231 Difference]: Finished difference. Result has 133 places, 87 transitions, 726 flow [2024-06-04 15:09:43,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=726, PETRI_PLACES=133, PETRI_TRANSITIONS=87} [2024-06-04 15:09:43,595 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 102 predicate places. [2024-06-04 15:09:43,595 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 87 transitions, 726 flow [2024-06-04 15:09:43,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:43,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:43,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:43,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-04 15:09:43,596 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:09:43,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:43,596 INFO L85 PathProgramCache]: Analyzing trace with hash 511873365, now seen corresponding path program 8 times [2024-06-04 15:09:43,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:43,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487937599] [2024-06-04 15:09:43,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:43,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:43,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:44,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:44,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:44,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487937599] [2024-06-04 15:09:44,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487937599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:44,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:44,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:09:44,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420912719] [2024-06-04 15:09:44,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:44,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:09:44,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:44,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:09:44,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:09:44,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:09:44,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 87 transitions, 726 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:44,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:44,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:09:44,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:44,841 INFO L124 PetriNetUnfolderBase]: 236/477 cut-off events. [2024-06-04 15:09:44,842 INFO L125 PetriNetUnfolderBase]: For 16815/16815 co-relation queries the response was YES. [2024-06-04 15:09:44,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2833 conditions, 477 events. 236/477 cut-off events. For 16815/16815 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2069 event pairs, 61 based on Foata normal form. 2/477 useless extension candidates. Maximal degree in co-relation 2784. Up to 424 conditions per place. [2024-06-04 15:09:44,844 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 76 selfloop transitions, 23 changer transitions 0/101 dead transitions. [2024-06-04 15:09:44,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 101 transitions, 974 flow [2024-06-04 15:09:44,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:09:44,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:09:44,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-04 15:09:44,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3352272727272727 [2024-06-04 15:09:44,845 INFO L175 Difference]: Start difference. First operand has 133 places, 87 transitions, 726 flow. Second operand 11 states and 118 transitions. [2024-06-04 15:09:44,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 101 transitions, 974 flow [2024-06-04 15:09:44,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 101 transitions, 928 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-04 15:09:44,865 INFO L231 Difference]: Finished difference. Result has 135 places, 88 transitions, 751 flow [2024-06-04 15:09:44,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=751, PETRI_PLACES=135, PETRI_TRANSITIONS=88} [2024-06-04 15:09:44,865 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 104 predicate places. [2024-06-04 15:09:44,865 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 88 transitions, 751 flow [2024-06-04 15:09:44,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:44,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:44,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:44,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-04 15:09:44,866 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:09:44,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:44,866 INFO L85 PathProgramCache]: Analyzing trace with hash -258595317, now seen corresponding path program 9 times [2024-06-04 15:09:44,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:44,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85217946] [2024-06-04 15:09:44,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:44,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:44,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:45,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:45,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:45,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85217946] [2024-06-04 15:09:45,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85217946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:45,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:45,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:09:45,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126984491] [2024-06-04 15:09:45,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:45,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:09:45,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:45,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:09:45,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:09:45,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:09:45,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 88 transitions, 751 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:45,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:45,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:09:45,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:46,103 INFO L124 PetriNetUnfolderBase]: 240/485 cut-off events. [2024-06-04 15:09:46,103 INFO L125 PetriNetUnfolderBase]: For 17866/17866 co-relation queries the response was YES. [2024-06-04 15:09:46,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2910 conditions, 485 events. 240/485 cut-off events. For 17866/17866 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2123 event pairs, 63 based on Foata normal form. 2/485 useless extension candidates. Maximal degree in co-relation 2860. Up to 416 conditions per place. [2024-06-04 15:09:46,106 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 77 selfloop transitions, 23 changer transitions 0/102 dead transitions. [2024-06-04 15:09:46,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 102 transitions, 1001 flow [2024-06-04 15:09:46,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:09:46,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:09:46,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-04 15:09:46,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-04 15:09:46,107 INFO L175 Difference]: Start difference. First operand has 135 places, 88 transitions, 751 flow. Second operand 11 states and 119 transitions. [2024-06-04 15:09:46,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 102 transitions, 1001 flow [2024-06-04 15:09:46,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 102 transitions, 942 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-04 15:09:46,130 INFO L231 Difference]: Finished difference. Result has 137 places, 89 transitions, 764 flow [2024-06-04 15:09:46,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=764, PETRI_PLACES=137, PETRI_TRANSITIONS=89} [2024-06-04 15:09:46,130 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 106 predicate places. [2024-06-04 15:09:46,130 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 89 transitions, 764 flow [2024-06-04 15:09:46,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:46,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:46,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:46,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-04 15:09:46,131 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:09:46,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:46,131 INFO L85 PathProgramCache]: Analyzing trace with hash 253594695, now seen corresponding path program 10 times [2024-06-04 15:09:46,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:46,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282054317] [2024-06-04 15:09:46,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:46,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:46,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:47,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:47,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:47,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282054317] [2024-06-04 15:09:47,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282054317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:47,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:47,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:09:47,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129849733] [2024-06-04 15:09:47,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:47,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:09:47,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:47,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:09:47,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:09:47,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:09:47,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 89 transitions, 764 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:47,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:47,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:09:47,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:47,320 INFO L124 PetriNetUnfolderBase]: 244/493 cut-off events. [2024-06-04 15:09:47,321 INFO L125 PetriNetUnfolderBase]: For 19023/19023 co-relation queries the response was YES. [2024-06-04 15:09:47,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2977 conditions, 493 events. 244/493 cut-off events. For 19023/19023 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2171 event pairs, 63 based on Foata normal form. 2/493 useless extension candidates. Maximal degree in co-relation 2926. Up to 419 conditions per place. [2024-06-04 15:09:47,323 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 79 selfloop transitions, 23 changer transitions 0/104 dead transitions. [2024-06-04 15:09:47,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 104 transitions, 1094 flow [2024-06-04 15:09:47,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:09:47,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:09:47,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-04 15:09:47,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-04 15:09:47,324 INFO L175 Difference]: Start difference. First operand has 137 places, 89 transitions, 764 flow. Second operand 11 states and 120 transitions. [2024-06-04 15:09:47,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 104 transitions, 1094 flow [2024-06-04 15:09:47,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 104 transitions, 1032 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-04 15:09:47,346 INFO L231 Difference]: Finished difference. Result has 139 places, 90 transitions, 774 flow [2024-06-04 15:09:47,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=774, PETRI_PLACES=139, PETRI_TRANSITIONS=90} [2024-06-04 15:09:47,346 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 108 predicate places. [2024-06-04 15:09:47,346 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 90 transitions, 774 flow [2024-06-04 15:09:47,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:47,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:47,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:47,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-04 15:09:47,347 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:09:47,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:47,347 INFO L85 PathProgramCache]: Analyzing trace with hash -267809323, now seen corresponding path program 51 times [2024-06-04 15:09:47,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:47,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641404613] [2024-06-04 15:09:47,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:47,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:47,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:48,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:48,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:48,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641404613] [2024-06-04 15:09:48,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641404613] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:48,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:48,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:09:48,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703132997] [2024-06-04 15:09:48,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:48,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:09:48,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:48,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:09:48,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:09:48,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:09:48,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 90 transitions, 774 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:48,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:48,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:09:48,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:48,640 INFO L124 PetriNetUnfolderBase]: 250/511 cut-off events. [2024-06-04 15:09:48,640 INFO L125 PetriNetUnfolderBase]: For 25272/25272 co-relation queries the response was YES. [2024-06-04 15:09:48,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2748 conditions, 511 events. 250/511 cut-off events. For 25272/25272 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2309 event pairs, 59 based on Foata normal form. 18/527 useless extension candidates. Maximal degree in co-relation 2696. Up to 381 conditions per place. [2024-06-04 15:09:48,642 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 73 selfloop transitions, 20 changer transitions 14/109 dead transitions. [2024-06-04 15:09:48,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 109 transitions, 1058 flow [2024-06-04 15:09:48,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:09:48,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:09:48,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-04 15:09:48,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3411458333333333 [2024-06-04 15:09:48,643 INFO L175 Difference]: Start difference. First operand has 139 places, 90 transitions, 774 flow. Second operand 12 states and 131 transitions. [2024-06-04 15:09:48,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 109 transitions, 1058 flow [2024-06-04 15:09:48,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 109 transitions, 983 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-04 15:09:48,667 INFO L231 Difference]: Finished difference. Result has 142 places, 84 transitions, 681 flow [2024-06-04 15:09:48,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=681, PETRI_PLACES=142, PETRI_TRANSITIONS=84} [2024-06-04 15:09:48,668 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 111 predicate places. [2024-06-04 15:09:48,668 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 84 transitions, 681 flow [2024-06-04 15:09:48,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:48,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:48,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:48,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-04 15:09:48,668 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:09:48,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:48,669 INFO L85 PathProgramCache]: Analyzing trace with hash 246176085, now seen corresponding path program 11 times [2024-06-04 15:09:48,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:48,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292658024] [2024-06-04 15:09:48,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:48,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:48,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:49,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:49,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:49,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292658024] [2024-06-04 15:09:49,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292658024] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:49,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:49,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:09:49,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612642592] [2024-06-04 15:09:49,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:49,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:09:49,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:49,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:09:49,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:09:49,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:09:49,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 84 transitions, 681 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:49,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:49,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:09:49,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:49,977 INFO L124 PetriNetUnfolderBase]: 204/421 cut-off events. [2024-06-04 15:09:49,977 INFO L125 PetriNetUnfolderBase]: For 13461/13461 co-relation queries the response was YES. [2024-06-04 15:09:49,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2223 conditions, 421 events. 204/421 cut-off events. For 13461/13461 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1787 event pairs, 48 based on Foata normal form. 2/421 useless extension candidates. Maximal degree in co-relation 2171. Up to 370 conditions per place. [2024-06-04 15:09:49,979 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 75 selfloop transitions, 21 changer transitions 0/98 dead transitions. [2024-06-04 15:09:49,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 98 transitions, 909 flow [2024-06-04 15:09:49,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:09:49,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:09:49,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-04 15:09:49,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-04 15:09:49,980 INFO L175 Difference]: Start difference. First operand has 142 places, 84 transitions, 681 flow. Second operand 11 states and 120 transitions. [2024-06-04 15:09:49,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 98 transitions, 909 flow [2024-06-04 15:09:50,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 98 transitions, 812 flow, removed 12 selfloop flow, removed 15 redundant places. [2024-06-04 15:09:50,002 INFO L231 Difference]: Finished difference. Result has 135 places, 84 transitions, 630 flow [2024-06-04 15:09:50,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=630, PETRI_PLACES=135, PETRI_TRANSITIONS=84} [2024-06-04 15:09:50,003 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 104 predicate places. [2024-06-04 15:09:50,003 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 84 transitions, 630 flow [2024-06-04 15:09:50,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:50,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:50,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:50,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-04 15:09:50,003 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:09:50,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:50,004 INFO L85 PathProgramCache]: Analyzing trace with hash 253317989, now seen corresponding path program 52 times [2024-06-04 15:09:50,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:50,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679880210] [2024-06-04 15:09:50,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:50,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:50,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:50,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:50,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:50,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679880210] [2024-06-04 15:09:50,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679880210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:50,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:50,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:09:50,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653005080] [2024-06-04 15:09:50,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:50,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:09:50,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:50,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:09:50,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:09:51,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:09:51,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 84 transitions, 630 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:51,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:51,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:09:51,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:51,328 INFO L124 PetriNetUnfolderBase]: 234/487 cut-off events. [2024-06-04 15:09:51,328 INFO L125 PetriNetUnfolderBase]: For 21945/21945 co-relation queries the response was YES. [2024-06-04 15:09:51,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2315 conditions, 487 events. 234/487 cut-off events. For 21945/21945 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2193 event pairs, 58 based on Foata normal form. 16/501 useless extension candidates. Maximal degree in co-relation 2267. Up to 362 conditions per place. [2024-06-04 15:09:51,330 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 70 selfloop transitions, 17 changer transitions 16/105 dead transitions. [2024-06-04 15:09:51,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 105 transitions, 918 flow [2024-06-04 15:09:51,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:09:51,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:09:51,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-04 15:09:51,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463541666666667 [2024-06-04 15:09:51,331 INFO L175 Difference]: Start difference. First operand has 135 places, 84 transitions, 630 flow. Second operand 12 states and 133 transitions. [2024-06-04 15:09:51,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 105 transitions, 918 flow [2024-06-04 15:09:51,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 105 transitions, 836 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-04 15:09:51,349 INFO L231 Difference]: Finished difference. Result has 136 places, 80 transitions, 559 flow [2024-06-04 15:09:51,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=559, PETRI_PLACES=136, PETRI_TRANSITIONS=80} [2024-06-04 15:09:51,349 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 105 predicate places. [2024-06-04 15:09:51,350 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 80 transitions, 559 flow [2024-06-04 15:09:51,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:51,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:51,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:51,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-04 15:09:51,350 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:09:51,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:51,350 INFO L85 PathProgramCache]: Analyzing trace with hash 245966339, now seen corresponding path program 53 times [2024-06-04 15:09:51,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:51,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147810693] [2024-06-04 15:09:51,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:51,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:51,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:52,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:52,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:52,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147810693] [2024-06-04 15:09:52,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147810693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:52,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:52,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:09:52,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660370967] [2024-06-04 15:09:52,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:52,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:09:52,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:52,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:09:52,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:09:52,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:09:52,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 80 transitions, 559 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:52,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:52,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:09:52,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:52,589 INFO L124 PetriNetUnfolderBase]: 206/435 cut-off events. [2024-06-04 15:09:52,589 INFO L125 PetriNetUnfolderBase]: For 18763/18763 co-relation queries the response was YES. [2024-06-04 15:09:52,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2079 conditions, 435 events. 206/435 cut-off events. For 18763/18763 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1920 event pairs, 48 based on Foata normal form. 10/443 useless extension candidates. Maximal degree in co-relation 2029. Up to 313 conditions per place. [2024-06-04 15:09:52,591 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 61 selfloop transitions, 25 changer transitions 12/100 dead transitions. [2024-06-04 15:09:52,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 100 transitions, 823 flow [2024-06-04 15:09:52,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:09:52,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:09:52,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-04 15:09:52,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-04 15:09:52,592 INFO L175 Difference]: Start difference. First operand has 136 places, 80 transitions, 559 flow. Second operand 12 states and 136 transitions. [2024-06-04 15:09:52,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 100 transitions, 823 flow [2024-06-04 15:09:52,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 100 transitions, 781 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 15:09:52,611 INFO L231 Difference]: Finished difference. Result has 132 places, 76 transitions, 537 flow [2024-06-04 15:09:52,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=537, PETRI_PLACES=132, PETRI_TRANSITIONS=76} [2024-06-04 15:09:52,611 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 101 predicate places. [2024-06-04 15:09:52,611 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 76 transitions, 537 flow [2024-06-04 15:09:52,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:52,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:52,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:52,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-04 15:09:52,612 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:09:52,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:52,612 INFO L85 PathProgramCache]: Analyzing trace with hash 246168149, now seen corresponding path program 54 times [2024-06-04 15:09:52,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:52,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242789426] [2024-06-04 15:09:52,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:52,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:52,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:53,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:53,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:53,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242789426] [2024-06-04 15:09:53,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242789426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:53,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:53,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:09:53,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992158806] [2024-06-04 15:09:53,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:53,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:09:53,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:53,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:09:53,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:09:53,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:09:53,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 76 transitions, 537 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:53,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:53,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:09:53,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:53,781 INFO L124 PetriNetUnfolderBase]: 168/361 cut-off events. [2024-06-04 15:09:53,781 INFO L125 PetriNetUnfolderBase]: For 11050/11050 co-relation queries the response was YES. [2024-06-04 15:09:53,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1455 conditions, 361 events. 168/361 cut-off events. For 11050/11050 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1503 event pairs, 33 based on Foata normal form. 10/369 useless extension candidates. Maximal degree in co-relation 1407. Up to 274 conditions per place. [2024-06-04 15:09:53,782 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 66 selfloop transitions, 15 changer transitions 11/94 dead transitions. [2024-06-04 15:09:53,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 94 transitions, 771 flow [2024-06-04 15:09:53,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:09:53,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:09:53,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-04 15:09:53,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3385416666666667 [2024-06-04 15:09:53,783 INFO L175 Difference]: Start difference. First operand has 132 places, 76 transitions, 537 flow. Second operand 12 states and 130 transitions. [2024-06-04 15:09:53,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 94 transitions, 771 flow [2024-06-04 15:09:53,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 94 transitions, 706 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-04 15:09:53,793 INFO L231 Difference]: Finished difference. Result has 128 places, 72 transitions, 466 flow [2024-06-04 15:09:53,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=466, PETRI_PLACES=128, PETRI_TRANSITIONS=72} [2024-06-04 15:09:53,793 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 97 predicate places. [2024-06-04 15:09:53,794 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 72 transitions, 466 flow [2024-06-04 15:09:53,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:53,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:53,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:53,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-04 15:09:53,794 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:09:53,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:53,794 INFO L85 PathProgramCache]: Analyzing trace with hash -30576826, now seen corresponding path program 1 times [2024-06-04 15:09:53,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:53,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453469246] [2024-06-04 15:09:53,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:53,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:53,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:55,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:55,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:55,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453469246] [2024-06-04 15:09:55,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453469246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:55,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:55,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 15:09:55,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102642613] [2024-06-04 15:09:55,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:55,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 15:09:55,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:55,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 15:09:55,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-04 15:09:55,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:09:55,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 72 transitions, 466 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:55,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:55,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:09:55,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:55,446 INFO L124 PetriNetUnfolderBase]: 150/331 cut-off events. [2024-06-04 15:09:55,447 INFO L125 PetriNetUnfolderBase]: For 7948/7948 co-relation queries the response was YES. [2024-06-04 15:09:55,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1264 conditions, 331 events. 150/331 cut-off events. For 7948/7948 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1347 event pairs, 28 based on Foata normal form. 6/335 useless extension candidates. Maximal degree in co-relation 1218. Up to 192 conditions per place. [2024-06-04 15:09:55,448 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 51 selfloop transitions, 12 changer transitions 26/91 dead transitions. [2024-06-04 15:09:55,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 91 transitions, 692 flow [2024-06-04 15:09:55,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 15:09:55,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 15:09:55,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 134 transitions. [2024-06-04 15:09:55,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32211538461538464 [2024-06-04 15:09:55,450 INFO L175 Difference]: Start difference. First operand has 128 places, 72 transitions, 466 flow. Second operand 13 states and 134 transitions. [2024-06-04 15:09:55,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 91 transitions, 692 flow [2024-06-04 15:09:55,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 91 transitions, 635 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-04 15:09:55,459 INFO L231 Difference]: Finished difference. Result has 123 places, 61 transitions, 387 flow [2024-06-04 15:09:55,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=387, PETRI_PLACES=123, PETRI_TRANSITIONS=61} [2024-06-04 15:09:55,460 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 92 predicate places. [2024-06-04 15:09:55,460 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 61 transitions, 387 flow [2024-06-04 15:09:55,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:55,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:55,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:55,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-04 15:09:55,460 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:09:55,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:55,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1600527806, now seen corresponding path program 2 times [2024-06-04 15:09:55,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:55,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385152492] [2024-06-04 15:09:55,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:55,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:55,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:56,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:56,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:56,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385152492] [2024-06-04 15:09:56,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385152492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:56,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:56,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 15:09:56,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007289493] [2024-06-04 15:09:56,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:56,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 15:09:56,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:56,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 15:09:56,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-04 15:09:56,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:09:56,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 61 transitions, 387 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:56,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:56,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:09:56,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:57,159 INFO L124 PetriNetUnfolderBase]: 130/284 cut-off events. [2024-06-04 15:09:57,160 INFO L125 PetriNetUnfolderBase]: For 7906/7906 co-relation queries the response was YES. [2024-06-04 15:09:57,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1076 conditions, 284 events. 130/284 cut-off events. For 7906/7906 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1108 event pairs, 25 based on Foata normal form. 6/289 useless extension candidates. Maximal degree in co-relation 1032. Up to 183 conditions per place. [2024-06-04 15:09:57,161 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 51 selfloop transitions, 14 changer transitions 10/77 dead transitions. [2024-06-04 15:09:57,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 77 transitions, 575 flow [2024-06-04 15:09:57,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:09:57,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:09:57,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-04 15:09:57,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255208333333333 [2024-06-04 15:09:57,162 INFO L175 Difference]: Start difference. First operand has 123 places, 61 transitions, 387 flow. Second operand 12 states and 125 transitions. [2024-06-04 15:09:57,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 77 transitions, 575 flow [2024-06-04 15:09:57,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 77 transitions, 533 flow, removed 7 selfloop flow, removed 14 redundant places. [2024-06-04 15:09:57,169 INFO L231 Difference]: Finished difference. Result has 105 places, 57 transitions, 357 flow [2024-06-04 15:09:57,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=357, PETRI_PLACES=105, PETRI_TRANSITIONS=57} [2024-06-04 15:09:57,170 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 74 predicate places. [2024-06-04 15:09:57,170 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 57 transitions, 357 flow [2024-06-04 15:09:57,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:57,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:57,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:57,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-04 15:09:57,170 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:09:57,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:57,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1986019142, now seen corresponding path program 3 times [2024-06-04 15:09:57,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:57,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368161313] [2024-06-04 15:09:57,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:57,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:57,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:58,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:58,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:58,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368161313] [2024-06-04 15:09:58,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368161313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:58,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:58,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 15:09:58,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458779370] [2024-06-04 15:09:58,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:58,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 15:09:58,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:58,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 15:09:58,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-04 15:09:58,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:09:58,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 57 transitions, 357 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:58,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:58,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:09:58,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:58,900 INFO L124 PetriNetUnfolderBase]: 118/260 cut-off events. [2024-06-04 15:09:58,900 INFO L125 PetriNetUnfolderBase]: For 5520/5520 co-relation queries the response was YES. [2024-06-04 15:09:58,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 972 conditions, 260 events. 118/260 cut-off events. For 5520/5520 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 970 event pairs, 23 based on Foata normal form. 6/265 useless extension candidates. Maximal degree in co-relation 934. Up to 156 conditions per place. [2024-06-04 15:09:58,901 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 43 selfloop transitions, 10 changer transitions 19/74 dead transitions. [2024-06-04 15:09:58,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 74 transitions, 541 flow [2024-06-04 15:09:58,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 15:09:58,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 15:09:58,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 129 transitions. [2024-06-04 15:09:58,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31009615384615385 [2024-06-04 15:09:58,902 INFO L175 Difference]: Start difference. First operand has 105 places, 57 transitions, 357 flow. Second operand 13 states and 129 transitions. [2024-06-04 15:09:58,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 74 transitions, 541 flow [2024-06-04 15:09:58,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 74 transitions, 507 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-04 15:09:58,908 INFO L231 Difference]: Finished difference. Result has 101 places, 50 transitions, 310 flow [2024-06-04 15:09:58,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=310, PETRI_PLACES=101, PETRI_TRANSITIONS=50} [2024-06-04 15:09:58,909 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 70 predicate places. [2024-06-04 15:09:58,909 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 50 transitions, 310 flow [2024-06-04 15:09:58,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:58,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:58,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:58,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-04 15:09:58,910 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:09:58,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:58,910 INFO L85 PathProgramCache]: Analyzing trace with hash -148390108, now seen corresponding path program 4 times [2024-06-04 15:09:58,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:58,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613308536] [2024-06-04 15:09:58,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:58,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:58,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:10:00,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:10:00,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:10:00,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613308536] [2024-06-04 15:10:00,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613308536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:10:00,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:10:00,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 15:10:00,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159618112] [2024-06-04 15:10:00,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:10:00,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 15:10:00,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:10:00,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 15:10:00,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-04 15:10:00,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:10:00,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 50 transitions, 310 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:10:00,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:10:00,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:10:00,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:10:00,856 INFO L124 PetriNetUnfolderBase]: 103/227 cut-off events. [2024-06-04 15:10:00,856 INFO L125 PetriNetUnfolderBase]: For 4810/4810 co-relation queries the response was YES. [2024-06-04 15:10:00,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 854 conditions, 227 events. 103/227 cut-off events. For 4810/4810 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 791 event pairs, 19 based on Foata normal form. 6/232 useless extension candidates. Maximal degree in co-relation 818. Up to 157 conditions per place. [2024-06-04 15:10:00,857 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 39 selfloop transitions, 10 changer transitions 14/65 dead transitions. [2024-06-04 15:10:00,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 65 transitions, 468 flow [2024-06-04 15:10:00,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:10:00,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:10:00,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-04 15:10:00,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3072916666666667 [2024-06-04 15:10:00,858 INFO L175 Difference]: Start difference. First operand has 101 places, 50 transitions, 310 flow. Second operand 12 states and 118 transitions. [2024-06-04 15:10:00,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 65 transitions, 468 flow [2024-06-04 15:10:00,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 65 transitions, 436 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-04 15:10:00,862 INFO L231 Difference]: Finished difference. Result has 89 places, 46 transitions, 282 flow [2024-06-04 15:10:00,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=282, PETRI_PLACES=89, PETRI_TRANSITIONS=46} [2024-06-04 15:10:00,863 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 58 predicate places. [2024-06-04 15:10:00,863 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 46 transitions, 282 flow [2024-06-04 15:10:00,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:10:00,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:10:00,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:10:00,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-04 15:10:00,863 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:10:00,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:10:00,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1620974874, now seen corresponding path program 5 times [2024-06-04 15:10:00,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:10:00,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175077574] [2024-06-04 15:10:00,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:10:00,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:10:00,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:10:02,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:10:02,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:10:02,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175077574] [2024-06-04 15:10:02,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175077574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:10:02,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:10:02,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 15:10:02,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675644227] [2024-06-04 15:10:02,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:10:02,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 15:10:02,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:10:02,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 15:10:02,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-04 15:10:02,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:10:02,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 46 transitions, 282 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:10:02,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:10:02,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:10:02,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:10:02,571 INFO L124 PetriNetUnfolderBase]: 89/201 cut-off events. [2024-06-04 15:10:02,572 INFO L125 PetriNetUnfolderBase]: For 3260/3260 co-relation queries the response was YES. [2024-06-04 15:10:02,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 751 conditions, 201 events. 89/201 cut-off events. For 3260/3260 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 655 event pairs, 19 based on Foata normal form. 6/206 useless extension candidates. Maximal degree in co-relation 720. Up to 120 conditions per place. [2024-06-04 15:10:02,572 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 35 selfloop transitions, 8 changer transitions 16/61 dead transitions. [2024-06-04 15:10:02,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 61 transitions, 436 flow [2024-06-04 15:10:02,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:10:02,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:10:02,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-04 15:10:02,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3072916666666667 [2024-06-04 15:10:02,573 INFO L175 Difference]: Start difference. First operand has 89 places, 46 transitions, 282 flow. Second operand 12 states and 118 transitions. [2024-06-04 15:10:02,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 61 transitions, 436 flow [2024-06-04 15:10:02,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 61 transitions, 408 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 15:10:02,577 INFO L231 Difference]: Finished difference. Result has 83 places, 40 transitions, 237 flow [2024-06-04 15:10:02,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=237, PETRI_PLACES=83, PETRI_TRANSITIONS=40} [2024-06-04 15:10:02,577 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 52 predicate places. [2024-06-04 15:10:02,577 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 40 transitions, 237 flow [2024-06-04 15:10:02,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:10:02,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:10:02,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:10:02,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-04 15:10:02,578 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:10:02,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:10:02,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1633762106, now seen corresponding path program 6 times [2024-06-04 15:10:02,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:10:02,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152367512] [2024-06-04 15:10:02,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:10:02,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:10:02,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:10:04,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:10:04,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:10:04,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152367512] [2024-06-04 15:10:04,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152367512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:10:04,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:10:04,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 15:10:04,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525284564] [2024-06-04 15:10:04,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:10:04,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 15:10:04,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:10:04,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 15:10:04,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-04 15:10:04,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:10:04,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 40 transitions, 237 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:10:04,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:10:04,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:10:04,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:10:04,592 INFO L124 PetriNetUnfolderBase]: 78/176 cut-off events. [2024-06-04 15:10:04,592 INFO L125 PetriNetUnfolderBase]: For 2478/2478 co-relation queries the response was YES. [2024-06-04 15:10:04,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 648 conditions, 176 events. 78/176 cut-off events. For 2478/2478 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 545 event pairs, 17 based on Foata normal form. 6/181 useless extension candidates. Maximal degree in co-relation 620. Up to 100 conditions per place. [2024-06-04 15:10:04,593 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 28 selfloop transitions, 12 changer transitions 13/55 dead transitions. [2024-06-04 15:10:04,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 55 transitions, 379 flow [2024-06-04 15:10:04,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 15:10:04,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 15:10:04,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 122 transitions. [2024-06-04 15:10:04,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2932692307692308 [2024-06-04 15:10:04,594 INFO L175 Difference]: Start difference. First operand has 83 places, 40 transitions, 237 flow. Second operand 13 states and 122 transitions. [2024-06-04 15:10:04,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 55 transitions, 379 flow [2024-06-04 15:10:04,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 55 transitions, 353 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-04 15:10:04,596 INFO L231 Difference]: Finished difference. Result has 75 places, 35 transitions, 204 flow [2024-06-04 15:10:04,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=204, PETRI_PLACES=75, PETRI_TRANSITIONS=35} [2024-06-04 15:10:04,597 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 44 predicate places. [2024-06-04 15:10:04,597 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 35 transitions, 204 flow [2024-06-04 15:10:04,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:10:04,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:10:04,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:10:04,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-04 15:10:04,597 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:10:04,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:10:04,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1159113748, now seen corresponding path program 7 times [2024-06-04 15:10:04,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:10:04,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195894887] [2024-06-04 15:10:04,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:10:04,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:10:04,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:10:05,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:10:05,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:10:05,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195894887] [2024-06-04 15:10:05,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195894887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:10:05,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:10:05,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 15:10:05,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283569371] [2024-06-04 15:10:05,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:10:05,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 15:10:05,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:10:05,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 15:10:05,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-04 15:10:06,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:10:06,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 35 transitions, 204 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:10:06,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:10:06,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:10:06,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:10:06,316 INFO L124 PetriNetUnfolderBase]: 65/153 cut-off events. [2024-06-04 15:10:06,316 INFO L125 PetriNetUnfolderBase]: For 1588/1588 co-relation queries the response was YES. [2024-06-04 15:10:06,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 153 events. 65/153 cut-off events. For 1588/1588 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 439 event pairs, 6 based on Foata normal form. 6/158 useless extension candidates. Maximal degree in co-relation 523. Up to 73 conditions per place. [2024-06-04 15:10:06,317 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 28 selfloop transitions, 10 changer transitions 10/50 dead transitions. [2024-06-04 15:10:06,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 50 transitions, 334 flow [2024-06-04 15:10:06,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:10:06,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:10:06,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 116 transitions. [2024-06-04 15:10:06,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3020833333333333 [2024-06-04 15:10:06,318 INFO L175 Difference]: Start difference. First operand has 75 places, 35 transitions, 204 flow. Second operand 12 states and 116 transitions. [2024-06-04 15:10:06,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 50 transitions, 334 flow [2024-06-04 15:10:06,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 50 transitions, 300 flow, removed 3 selfloop flow, removed 14 redundant places. [2024-06-04 15:10:06,320 INFO L231 Difference]: Finished difference. Result has 68 places, 31 transitions, 174 flow [2024-06-04 15:10:06,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=174, PETRI_PLACES=68, PETRI_TRANSITIONS=31} [2024-06-04 15:10:06,320 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 37 predicate places. [2024-06-04 15:10:06,320 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 31 transitions, 174 flow [2024-06-04 15:10:06,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:10:06,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:10:06,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:10:06,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-04 15:10:06,321 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:10:06,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:10:06,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1139466946, now seen corresponding path program 8 times [2024-06-04 15:10:06,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:10:06,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156609845] [2024-06-04 15:10:06,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:10:06,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:10:06,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:10:07,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:10:07,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:10:07,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156609845] [2024-06-04 15:10:07,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156609845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:10:07,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:10:07,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 15:10:07,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541207222] [2024-06-04 15:10:07,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:10:07,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 15:10:07,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:10:07,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 15:10:07,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-04 15:10:07,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:10:07,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 31 transitions, 174 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:10:07,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:10:07,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:10:07,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:10:08,137 INFO L124 PetriNetUnfolderBase]: 53/129 cut-off events. [2024-06-04 15:10:08,137 INFO L125 PetriNetUnfolderBase]: For 1212/1212 co-relation queries the response was YES. [2024-06-04 15:10:08,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 461 conditions, 129 events. 53/129 cut-off events. For 1212/1212 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 334 event pairs, 15 based on Foata normal form. 6/134 useless extension candidates. Maximal degree in co-relation 440. Up to 60 conditions per place. [2024-06-04 15:10:08,138 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 21 selfloop transitions, 8 changer transitions 14/45 dead transitions. [2024-06-04 15:10:08,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 45 transitions, 292 flow [2024-06-04 15:10:08,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:10:08,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:10:08,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 115 transitions. [2024-06-04 15:10:08,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2994791666666667 [2024-06-04 15:10:08,138 INFO L175 Difference]: Start difference. First operand has 68 places, 31 transitions, 174 flow. Second operand 12 states and 115 transitions. [2024-06-04 15:10:08,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 45 transitions, 292 flow [2024-06-04 15:10:08,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 45 transitions, 266 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-04 15:10:08,140 INFO L231 Difference]: Finished difference. Result has 63 places, 26 transitions, 139 flow [2024-06-04 15:10:08,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=139, PETRI_PLACES=63, PETRI_TRANSITIONS=26} [2024-06-04 15:10:08,140 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 32 predicate places. [2024-06-04 15:10:08,140 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 26 transitions, 139 flow [2024-06-04 15:10:08,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:10:08,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:10:08,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:10:08,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-04 15:10:08,141 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:10:08,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:10:08,141 INFO L85 PathProgramCache]: Analyzing trace with hash -490688698, now seen corresponding path program 9 times [2024-06-04 15:10:08,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:10:08,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715385699] [2024-06-04 15:10:08,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:10:08,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:10:08,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:10:09,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:10:09,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:10:09,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715385699] [2024-06-04 15:10:09,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715385699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:10:09,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:10:09,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:10:09,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280112257] [2024-06-04 15:10:09,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:10:09,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:10:09,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:10:09,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:10:09,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:10:09,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:10:09,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 26 transitions, 139 flow. Second operand has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:10:09,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:10:09,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:10:09,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:10:09,425 INFO L124 PetriNetUnfolderBase]: 28/74 cut-off events. [2024-06-04 15:10:09,425 INFO L125 PetriNetUnfolderBase]: For 480/480 co-relation queries the response was YES. [2024-06-04 15:10:09,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 74 events. 28/74 cut-off events. For 480/480 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 114 event pairs, 0 based on Foata normal form. 6/79 useless extension candidates. Maximal degree in co-relation 212. Up to 24 conditions per place. [2024-06-04 15:10:09,426 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 0 selfloop transitions, 0 changer transitions 35/35 dead transitions. [2024-06-04 15:10:09,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 35 transitions, 199 flow [2024-06-04 15:10:09,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:10:09,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:10:09,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 104 transitions. [2024-06-04 15:10:09,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2708333333333333 [2024-06-04 15:10:09,426 INFO L175 Difference]: Start difference. First operand has 63 places, 26 transitions, 139 flow. Second operand 12 states and 104 transitions. [2024-06-04 15:10:09,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 35 transitions, 199 flow [2024-06-04 15:10:09,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 35 transitions, 163 flow, removed 1 selfloop flow, removed 15 redundant places. [2024-06-04 15:10:09,427 INFO L231 Difference]: Finished difference. Result has 50 places, 0 transitions, 0 flow [2024-06-04 15:10:09,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=50, PETRI_TRANSITIONS=0} [2024-06-04 15:10:09,427 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 19 predicate places. [2024-06-04 15:10:09,428 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 0 transitions, 0 flow [2024-06-04 15:10:09,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:10:09,436 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-04 15:10:09,436 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-04 15:10:09,437 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-04 15:10:09,437 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-04 15:10:09,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-04 15:10:09,437 INFO L445 BasicCegarLoop]: Path program histogram: [54, 26, 21, 16, 15, 11, 10, 9, 9, 6, 6, 5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:10:09,455 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-04 15:10:09,455 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-04 15:10:09,461 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-04 15:10:09,471 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-04 15:10:09,472 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.06 03:10:09 BasicIcfg [2024-06-04 15:10:09,472 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-04 15:10:09,473 INFO L158 Benchmark]: Toolchain (without parser) took 355840.76ms. Allocated memory was 153.1MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 76.6MB in the beginning and 911.7MB in the end (delta: -835.1MB). Peak memory consumption was 257.6MB. Max. memory is 16.1GB. [2024-06-04 15:10:09,474 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 109.1MB. Free memory is still 69.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 15:10:09,474 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 153.1MB. Free memory was 124.1MB in the beginning and 124.0MB in the end (delta: 158.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 15:10:09,475 INFO L158 Benchmark]: CACSL2BoogieTranslator took 613.97ms. Allocated memory is still 153.1MB. Free memory was 76.5MB in the beginning and 98.6MB in the end (delta: -22.1MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. [2024-06-04 15:10:09,475 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.13ms. Allocated memory is still 153.1MB. Free memory was 98.6MB in the beginning and 95.9MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-04 15:10:09,475 INFO L158 Benchmark]: Boogie Preprocessor took 69.14ms. Allocated memory is still 153.1MB. Free memory was 95.9MB in the beginning and 92.3MB in the end (delta: 3.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-04 15:10:09,475 INFO L158 Benchmark]: RCFGBuilder took 611.16ms. Allocated memory is still 153.1MB. Free memory was 92.3MB in the beginning and 113.9MB in the end (delta: -21.6MB). Peak memory consumption was 50.9MB. Max. memory is 16.1GB. [2024-06-04 15:10:09,475 INFO L158 Benchmark]: TraceAbstraction took 354472.84ms. Allocated memory was 153.1MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 113.1MB in the beginning and 911.7MB in the end (delta: -798.6MB). Peak memory consumption was 292.5MB. Max. memory is 16.1GB. [2024-06-04 15:10:09,476 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.16ms. Allocated memory is still 109.1MB. Free memory is still 69.6MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.15ms. Allocated memory is still 153.1MB. Free memory was 124.1MB in the beginning and 124.0MB in the end (delta: 158.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 613.97ms. Allocated memory is still 153.1MB. Free memory was 76.5MB in the beginning and 98.6MB in the end (delta: -22.1MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.13ms. Allocated memory is still 153.1MB. Free memory was 98.6MB in the beginning and 95.9MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 69.14ms. Allocated memory is still 153.1MB. Free memory was 95.9MB in the beginning and 92.3MB in the end (delta: 3.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 611.16ms. Allocated memory is still 153.1MB. Free memory was 92.3MB in the beginning and 113.9MB in the end (delta: -21.6MB). Peak memory consumption was 50.9MB. Max. memory is 16.1GB. * TraceAbstraction took 354472.84ms. Allocated memory was 153.1MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 113.1MB in the beginning and 911.7MB in the end (delta: -798.6MB). Peak memory consumption was 292.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 820]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 821]: 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, 51 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: 354.3s, OverallIterations: 214, TraceHistogramMax: 1, PathProgramHistogramMax: 54, EmptinessCheckTime: 0.0s, AutomataDifference: 165.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15224 SdHoareTripleChecker+Valid, 54.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13088 mSDsluCounter, 7857 SdHoareTripleChecker+Invalid, 47.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6866 mSDsCounter, 3802 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 94652 IncrementalHoareTripleChecker+Invalid, 98454 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3802 mSolverCounterUnsat, 991 mSDtfsCounter, 94652 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2621 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2620 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6343 ImplicationChecksByTransitivity, 71.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3252occurred in iteration=133, InterpolantAutomatonStates: 2273, 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: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 185.5s InterpolantComputationTime, 3720 NumberOfCodeBlocks, 3720 NumberOfCodeBlocksAsserted, 214 NumberOfCheckSat, 3506 ConstructedInterpolants, 0 QuantifiedInterpolants, 161015 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 214 InterpolantComputations, 214 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! [2024-06-04 15:10:09,516 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