./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.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/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i ./goblint.2024-05-21_14-57-05.files/protection/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-bcb38a6-m [2024-06-04 15:15:03,822 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 15:15:03,886 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 15:15:03,891 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 15:15:03,892 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 15:15:03,915 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 15:15:03,916 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 15:15:03,916 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 15:15:03,916 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 15:15:03,919 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 15:15:03,919 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 15:15:03,920 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 15:15:03,920 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 15:15:03,921 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 15:15:03,921 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 15:15:03,922 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 15:15:03,922 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 15:15:03,922 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 15:15:03,922 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 15:15:03,922 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 15:15:03,922 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 15:15:03,923 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 15:15:03,923 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 15:15:03,923 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 15:15:03,923 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 15:15:03,923 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 15:15:03,924 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 15:15:03,924 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 15:15:03,924 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 15:15:03,924 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 15:15:03,925 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 15:15:03,925 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 15:15:03,925 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 15:15:03,925 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 15:15:03,926 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 15:15:03,926 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 15:15:03,926 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 15:15:03,926 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 15:15:03,926 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 15:15:03,926 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 15:15:03,926 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 15:15:03,927 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 15:15:03,927 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 15:15:03,927 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 15:15:04,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 15:15:04,209 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 15:15:04,211 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 15:15:04,212 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 15:15:04,213 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 15:15:04,214 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-04 15:15:05,198 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 15:15:05,402 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 15:15:05,403 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-04 15:15:05,414 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff5901a79/b81f7d69b9da419eafa92f0c8b9e5fd3/FLAG474e92a40 [2024-06-04 15:15:05,425 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff5901a79/b81f7d69b9da419eafa92f0c8b9e5fd3 [2024-06-04 15:15:05,427 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 15:15:05,427 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 15:15:05,428 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml [2024-06-04 15:15:05,541 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 15:15:05,542 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 15:15:05,543 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 15:15:05,543 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 15:15:05,547 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 15:15:05,547 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 03:15:05" (1/2) ... [2024-06-04 15:15:05,548 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ef426b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:15:05, skipping insertion in model container [2024-06-04 15:15:05,548 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 03:15:05" (1/2) ... [2024-06-04 15:15:05,550 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@69e49c38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:15:05, skipping insertion in model container [2024-06-04 15:15:05,550 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:15:05" (2/2) ... [2024-06-04 15:15:05,550 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ef426b3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:15:05, skipping insertion in model container [2024-06-04 15:15:05,550 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:15:05" (2/2) ... [2024-06-04 15:15:05,551 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 15:15:05,598 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 15:15:05,600 INFO L97 edCorrectnessWitness]: Location invariant before [L805-L805] (((((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) [2024-06-04 15:15:05,600 INFO L97 edCorrectnessWitness]: Location invariant before [L806-L806] (((((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) [2024-06-04 15:15:05,600 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 15:15:05,600 INFO L106 edCorrectnessWitness]: ghost_update [L803-L803] multithreaded = 1; [2024-06-04 15:15:05,637 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 15:15:05,938 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 15:15:05,954 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-04 15:15:06,069 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 15:15:06,111 INFO L206 MainTranslator]: Completed translation [2024-06-04 15:15:06,112 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:15:06 WrapperNode [2024-06-04 15:15:06,112 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 15:15:06,113 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 15:15:06,113 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 15:15:06,113 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 15:15:06,120 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:15:06" (1/1) ... [2024-06-04 15:15:06,144 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:15:06" (1/1) ... [2024-06-04 15:15:06,166 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 139 [2024-06-04 15:15:06,167 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 15:15:06,167 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 15:15:06,168 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 15:15:06,168 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 15:15:06,179 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:15:06" (1/1) ... [2024-06-04 15:15:06,179 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:15:06" (1/1) ... [2024-06-04 15:15:06,181 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:15:06" (1/1) ... [2024-06-04 15:15:06,206 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 15:15:06,206 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:15:06" (1/1) ... [2024-06-04 15:15:06,206 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:15:06" (1/1) ... [2024-06-04 15:15:06,216 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:15:06" (1/1) ... [2024-06-04 15:15:06,217 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:15:06" (1/1) ... [2024-06-04 15:15:06,228 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:15:06" (1/1) ... [2024-06-04 15:15:06,229 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:15:06" (1/1) ... [2024-06-04 15:15:06,232 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 15:15:06,232 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 15:15:06,233 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 15:15:06,233 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 15:15:06,233 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:15:06" (1/1) ... [2024-06-04 15:15:06,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 15:15:06,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 15:15:06,263 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 15:15:06,300 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 15:15:06,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-04 15:15:06,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 15:15:06,361 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-04 15:15:06,361 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-04 15:15:06,361 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-04 15:15:06,361 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-04 15:15:06,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 15:15:06,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-04 15:15:06,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 15:15:06,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 15:15:06,381 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 15:15:06,508 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 15:15:06,510 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 15:15:06,797 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 15:15:06,797 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 15:15:06,946 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 15:15:06,946 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-04 15:15:06,948 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 03:15:06 BoogieIcfgContainer [2024-06-04 15:15:06,948 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 15:15:06,950 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 15:15:06,951 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 15:15:06,953 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 15:15:06,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 03:15:05" (1/4) ... [2024-06-04 15:15:06,954 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a7c3514 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 03:15:06, skipping insertion in model container [2024-06-04 15:15:06,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:15:05" (2/4) ... [2024-06-04 15:15:06,955 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a7c3514 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 03:15:06, skipping insertion in model container [2024-06-04 15:15:06,955 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:15:06" (3/4) ... [2024-06-04 15:15:06,959 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a7c3514 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 03:15:06, skipping insertion in model container [2024-06-04 15:15:06,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 03:15:06" (4/4) ... [2024-06-04 15:15:06,960 INFO L112 eAbstractionObserver]: Analyzing ICFG mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-04 15:15:06,974 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 15:15:06,974 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-04 15:15:06,974 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 15:15:07,031 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-04 15:15:07,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-04 15:15:07,100 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-04 15:15:07,101 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 15:15:07,103 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 41 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 15:15:07,103 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-04 15:15:07,106 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-04 15:15:07,117 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 15:15:07,124 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;@2fdb890e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 15:15:07,124 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-04 15:15:07,128 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 15:15:07,128 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-04 15:15:07,128 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 15:15:07,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:07,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-04 15:15:07,130 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 15:15:07,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:07,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1639526218, now seen corresponding path program 1 times [2024-06-04 15:15:07,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:07,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602101236] [2024-06-04 15:15:07,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:07,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:07,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:08,051 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 15:15:08,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:08,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602101236] [2024-06-04 15:15:08,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602101236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:08,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:08,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-04 15:15:08,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439863249] [2024-06-04 15:15:08,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:08,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 15:15:08,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:08,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 15:15:08,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 15:15:08,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:15:08,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:08,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:08,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:15:08,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:08,217 INFO L124 PetriNetUnfolderBase]: 162/321 cut-off events. [2024-06-04 15:15:08,218 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-04 15:15:08,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 634 conditions, 321 events. 162/321 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1193 event pairs, 97 based on Foata normal form. 1/310 useless extension candidates. Maximal degree in co-relation 620. Up to 288 conditions per place. [2024-06-04 15:15:08,223 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 23 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-04 15:15:08,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 121 flow [2024-06-04 15:15:08,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 15:15:08,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 15:15:08,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-06-04 15:15:08,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-04 15:15:08,233 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 52 transitions. [2024-06-04 15:15:08,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 121 flow [2024-06-04 15:15:08,235 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 15:15:08,237 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-04 15:15:08,238 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 15:15:08,241 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-04 15:15:08,241 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-04 15:15:08,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:08,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:08,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:08,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 15:15:08,242 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 15:15:08,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:08,243 INFO L85 PathProgramCache]: Analyzing trace with hash -668275543, now seen corresponding path program 1 times [2024-06-04 15:15:08,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:08,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591711880] [2024-06-04 15:15:08,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:08,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:08,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:08,759 INFO 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 15:15:08,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:08,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591711880] [2024-06-04 15:15:08,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591711880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:08,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:08,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 15:15:08,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4870919] [2024-06-04 15:15:08,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:08,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 15:15:08,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:08,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 15:15:08,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-04 15:15:08,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:15:08,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:08,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:08,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:15:08,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:08,908 INFO L124 PetriNetUnfolderBase]: 186/349 cut-off events. [2024-06-04 15:15:08,908 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2024-06-04 15:15:08,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 793 conditions, 349 events. 186/349 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1264 event pairs, 94 based on Foata normal form. 2/344 useless extension candidates. Maximal degree in co-relation 778. Up to 319 conditions per place. [2024-06-04 15:15:08,913 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 28 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-06-04 15:15:08,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 165 flow [2024-06-04 15:15:08,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 15:15:08,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 15:15:08,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2024-06-04 15:15:08,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921875 [2024-06-04 15:15:08,917 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 63 transitions. [2024-06-04 15:15:08,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 165 flow [2024-06-04 15:15:08,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 162 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-04 15:15:08,920 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-04 15:15:08,920 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 15:15:08,921 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-04 15:15:08,921 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-04 15:15:08,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:08,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:08,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:08,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 15:15:08,922 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 15:15:08,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:08,922 INFO L85 PathProgramCache]: Analyzing trace with hash 758295539, now seen corresponding path program 1 times [2024-06-04 15:15:08,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:08,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324295191] [2024-06-04 15:15:08,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:08,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:09,495 INFO 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 15:15:09,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:09,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324295191] [2024-06-04 15:15:09,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324295191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:09,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:09,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 15:15:09,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384680881] [2024-06-04 15:15:09,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:09,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-04 15:15:09,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:09,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-04 15:15:09,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-04 15:15:09,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:15:09,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 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 15:15:09,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:09,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:15:09,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:09,627 INFO L124 PetriNetUnfolderBase]: 180/341 cut-off events. [2024-06-04 15:15:09,628 INFO L125 PetriNetUnfolderBase]: For 193/193 co-relation queries the response was YES. [2024-06-04 15:15:09,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 853 conditions, 341 events. 180/341 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1220 event pairs, 52 based on Foata normal form. 4/340 useless extension candidates. Maximal degree in co-relation 836. Up to 291 conditions per place. [2024-06-04 15:15:09,630 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 33 selfloop transitions, 7 changer transitions 0/43 dead transitions. [2024-06-04 15:15:09,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 43 transitions, 217 flow [2024-06-04 15:15:09,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 15:15:09,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 15:15:09,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2024-06-04 15:15:09,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48125 [2024-06-04 15:15:09,633 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 77 transitions. [2024-06-04 15:15:09,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 43 transitions, 217 flow [2024-06-04 15:15:09,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 43 transitions, 208 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-04 15:15:09,635 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 121 flow [2024-06-04 15:15:09,636 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=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-06-04 15:15:09,637 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-06-04 15:15:09,637 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 121 flow [2024-06-04 15:15:09,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 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 15:15:09,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:09,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:09,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-04 15:15:09,638 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 15:15:09,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:09,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1422397774, now seen corresponding path program 1 times [2024-06-04 15:15:09,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:09,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158513023] [2024-06-04 15:15:09,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:09,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:09,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:10,506 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 15:15:10,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:10,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158513023] [2024-06-04 15:15:10,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158513023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:10,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:10,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:15:10,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981609385] [2024-06-04 15:15:10,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:10,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:15:10,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:10,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:15:10,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:15:10,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:15:10,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 121 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:10,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:10,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:15:10,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:10,734 INFO L124 PetriNetUnfolderBase]: 176/331 cut-off events. [2024-06-04 15:15:10,735 INFO L125 PetriNetUnfolderBase]: For 311/311 co-relation queries the response was YES. [2024-06-04 15:15:10,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 903 conditions, 331 events. 176/331 cut-off events. For 311/311 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1158 event pairs, 30 based on Foata normal form. 4/328 useless extension candidates. Maximal degree in co-relation 885. Up to 265 conditions per place. [2024-06-04 15:15:10,737 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 33 selfloop transitions, 8 changer transitions 0/44 dead transitions. [2024-06-04 15:15:10,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 231 flow [2024-06-04 15:15:10,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:15:10,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:15:10,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 85 transitions. [2024-06-04 15:15:10,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4427083333333333 [2024-06-04 15:15:10,738 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 121 flow. Second operand 6 states and 85 transitions. [2024-06-04 15:15:10,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 231 flow [2024-06-04 15:15:10,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 44 transitions, 216 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-04 15:15:10,740 INFO L231 Difference]: Finished difference. Result has 40 places, 29 transitions, 118 flow [2024-06-04 15:15:10,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=118, PETRI_PLACES=40, PETRI_TRANSITIONS=29} [2024-06-04 15:15:10,741 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2024-06-04 15:15:10,741 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 29 transitions, 118 flow [2024-06-04 15:15:10,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:10,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:10,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:10,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-04 15:15:10,742 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 15:15:10,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:10,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1867651097, now seen corresponding path program 1 times [2024-06-04 15:15:10,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:10,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746979641] [2024-06-04 15:15:10,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:10,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:10,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:11,313 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 15:15:11,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:11,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746979641] [2024-06-04 15:15:11,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746979641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:11,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:11,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 15:15:11,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883294411] [2024-06-04 15:15:11,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:11,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 15:15:11,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:11,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 15:15:11,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-04 15:15:11,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 15:15:11,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 29 transitions, 118 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 15:15:11,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:11,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 15:15:11,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:11,486 INFO L124 PetriNetUnfolderBase]: 147/295 cut-off events. [2024-06-04 15:15:11,486 INFO L125 PetriNetUnfolderBase]: For 377/377 co-relation queries the response was YES. [2024-06-04 15:15:11,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 823 conditions, 295 events. 147/295 cut-off events. For 377/377 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1059 event pairs, 53 based on Foata normal form. 1/289 useless extension candidates. Maximal degree in co-relation 804. Up to 259 conditions per place. [2024-06-04 15:15:11,488 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 26 selfloop transitions, 6 changer transitions 0/36 dead transitions. [2024-06-04 15:15:11,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 36 transitions, 200 flow [2024-06-04 15:15:11,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 15:15:11,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 15:15:11,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 64 transitions. [2024-06-04 15:15:11,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-04 15:15:11,489 INFO L175 Difference]: Start difference. First operand has 40 places, 29 transitions, 118 flow. Second operand 5 states and 64 transitions. [2024-06-04 15:15:11,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 36 transitions, 200 flow [2024-06-04 15:15:11,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 36 transitions, 180 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-04 15:15:11,491 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 125 flow [2024-06-04 15:15:11,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=125, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2024-06-04 15:15:11,492 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2024-06-04 15:15:11,492 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 125 flow [2024-06-04 15:15:11,492 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 15:15:11,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:11,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:11,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-04 15:15:11,493 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 15:15:11,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:11,493 INFO L85 PathProgramCache]: Analyzing trace with hash -2062607691, now seen corresponding path program 1 times [2024-06-04 15:15:11,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:11,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538543844] [2024-06-04 15:15:11,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:11,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:11,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:12,218 INFO 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 15:15:12,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:12,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538543844] [2024-06-04 15:15:12,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538543844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:12,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:12,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:15:12,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643021613] [2024-06-04 15:15:12,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:12,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:15:12,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:12,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:15:12,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:15:12,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:15:12,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 125 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 15:15:12,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:12,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:15:12,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:12,420 INFO L124 PetriNetUnfolderBase]: 172/330 cut-off events. [2024-06-04 15:15:12,421 INFO L125 PetriNetUnfolderBase]: For 581/581 co-relation queries the response was YES. [2024-06-04 15:15:12,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 974 conditions, 330 events. 172/330 cut-off events. For 581/581 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1177 event pairs, 64 based on Foata normal form. 1/330 useless extension candidates. Maximal degree in co-relation 953. Up to 298 conditions per place. [2024-06-04 15:15:12,436 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 28 selfloop transitions, 8 changer transitions 0/39 dead transitions. [2024-06-04 15:15:12,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 39 transitions, 219 flow [2024-06-04 15:15:12,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:15:12,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:15:12,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2024-06-04 15:15:12,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-04 15:15:12,437 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 125 flow. Second operand 6 states and 69 transitions. [2024-06-04 15:15:12,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 39 transitions, 219 flow [2024-06-04 15:15:12,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 39 transitions, 208 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-04 15:15:12,439 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 147 flow [2024-06-04 15:15:12,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=147, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2024-06-04 15:15:12,440 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2024-06-04 15:15:12,440 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 147 flow [2024-06-04 15:15:12,440 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 15:15:12,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:12,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:12,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-04 15:15:12,441 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 15:15:12,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:12,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1868618978, now seen corresponding path program 1 times [2024-06-04 15:15:12,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:12,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108563101] [2024-06-04 15:15:12,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:12,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:12,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:12,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:15:12,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:12,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108563101] [2024-06-04 15:15:12,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108563101] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:12,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:12,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:15:12,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094681140] [2024-06-04 15:15:12,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:12,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:15:12,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:12,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:15:12,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:15:13,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:15:13,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 147 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 15:15:13,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:13,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:15:13,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:13,176 INFO L124 PetriNetUnfolderBase]: 188/349 cut-off events. [2024-06-04 15:15:13,176 INFO L125 PetriNetUnfolderBase]: For 952/952 co-relation queries the response was YES. [2024-06-04 15:15:13,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1133 conditions, 349 events. 188/349 cut-off events. For 952/952 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1223 event pairs, 71 based on Foata normal form. 1/349 useless extension candidates. Maximal degree in co-relation 1111. Up to 311 conditions per place. [2024-06-04 15:15:13,178 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 32 selfloop transitions, 8 changer transitions 0/44 dead transitions. [2024-06-04 15:15:13,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 44 transitions, 257 flow [2024-06-04 15:15:13,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:15:13,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:15:13,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 72 transitions. [2024-06-04 15:15:13,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 15:15:13,180 INFO L175 Difference]: Start difference. First operand has 44 places, 33 transitions, 147 flow. Second operand 6 states and 72 transitions. [2024-06-04 15:15:13,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 44 transitions, 257 flow [2024-06-04 15:15:13,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 44 transitions, 240 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-04 15:15:13,182 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 163 flow [2024-06-04 15:15:13,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=130, 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=163, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2024-06-04 15:15:13,182 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 15 predicate places. [2024-06-04 15:15:13,182 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 163 flow [2024-06-04 15:15:13,183 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 15:15:13,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:13,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:13,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-04 15:15:13,183 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 15:15:13,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:13,184 INFO L85 PathProgramCache]: Analyzing trace with hash 705309622, now seen corresponding path program 2 times [2024-06-04 15:15:13,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:13,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206561785] [2024-06-04 15:15:13,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:13,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:13,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:13,713 INFO 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 15:15:13,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:13,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206561785] [2024-06-04 15:15:13,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206561785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:13,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:13,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:15:13,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322899524] [2024-06-04 15:15:13,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:13,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:15:13,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:13,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:15:13,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:15:13,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:15:13,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 163 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 15:15:13,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:13,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:15:13,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:13,908 INFO L124 PetriNetUnfolderBase]: 186/347 cut-off events. [2024-06-04 15:15:13,908 INFO L125 PetriNetUnfolderBase]: For 1247/1250 co-relation queries the response was YES. [2024-06-04 15:15:13,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1197 conditions, 347 events. 186/347 cut-off events. For 1247/1250 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1214 event pairs, 75 based on Foata normal form. 3/348 useless extension candidates. Maximal degree in co-relation 1174. Up to 302 conditions per place. [2024-06-04 15:15:13,910 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 28 selfloop transitions, 11 changer transitions 0/43 dead transitions. [2024-06-04 15:15:13,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 43 transitions, 267 flow [2024-06-04 15:15:13,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:15:13,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:15:13,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2024-06-04 15:15:13,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2024-06-04 15:15:13,911 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 163 flow. Second operand 6 states and 71 transitions. [2024-06-04 15:15:13,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 43 transitions, 267 flow [2024-06-04 15:15:13,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 43 transitions, 250 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-04 15:15:13,913 INFO L231 Difference]: Finished difference. Result has 48 places, 37 transitions, 189 flow [2024-06-04 15:15:13,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=146, 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=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=189, PETRI_PLACES=48, PETRI_TRANSITIONS=37} [2024-06-04 15:15:13,914 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2024-06-04 15:15:13,914 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 37 transitions, 189 flow [2024-06-04 15:15:13,914 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 15:15:13,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:13,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:13,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-04 15:15:13,915 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 15:15:13,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:13,915 INFO L85 PathProgramCache]: Analyzing trace with hash 483672518, now seen corresponding path program 1 times [2024-06-04 15:15:13,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:13,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505465734] [2024-06-04 15:15:13,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:13,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:13,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:14,567 INFO 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 15:15:14,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:14,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505465734] [2024-06-04 15:15:14,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505465734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:14,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:14,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:15:14,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515403308] [2024-06-04 15:15:14,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:14,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:15:14,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:14,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:15:14,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:15:14,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:15:14,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 37 transitions, 189 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 15:15:14,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:14,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:15:14,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:14,727 INFO L124 PetriNetUnfolderBase]: 171/324 cut-off events. [2024-06-04 15:15:14,728 INFO L125 PetriNetUnfolderBase]: For 1225/1225 co-relation queries the response was YES. [2024-06-04 15:15:14,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1158 conditions, 324 events. 171/324 cut-off events. For 1225/1225 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1139 event pairs, 62 based on Foata normal form. 1/324 useless extension candidates. Maximal degree in co-relation 1134. Up to 294 conditions per place. [2024-06-04 15:15:14,730 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 33 selfloop transitions, 10 changer transitions 0/46 dead transitions. [2024-06-04 15:15:14,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 46 transitions, 301 flow [2024-06-04 15:15:14,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:15:14,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:15:14,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-04 15:15:14,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3482142857142857 [2024-06-04 15:15:14,731 INFO L175 Difference]: Start difference. First operand has 48 places, 37 transitions, 189 flow. Second operand 7 states and 78 transitions. [2024-06-04 15:15:14,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 46 transitions, 301 flow [2024-06-04 15:15:14,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 46 transitions, 274 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-04 15:15:14,733 INFO L231 Difference]: Finished difference. Result has 51 places, 39 transitions, 201 flow [2024-06-04 15:15:14,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=201, PETRI_PLACES=51, PETRI_TRANSITIONS=39} [2024-06-04 15:15:14,734 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 20 predicate places. [2024-06-04 15:15:14,734 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 39 transitions, 201 flow [2024-06-04 15:15:14,734 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 15:15:14,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:14,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:14,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-04 15:15:14,735 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 15:15:14,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:14,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1931449946, now seen corresponding path program 1 times [2024-06-04 15:15:14,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:14,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342753053] [2024-06-04 15:15:14,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:14,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:14,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:15,419 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 15:15:15,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:15,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342753053] [2024-06-04 15:15:15,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342753053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:15,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:15,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:15:15,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962282694] [2024-06-04 15:15:15,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:15,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:15:15,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:15,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:15:15,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:15:15,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:15:15,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 39 transitions, 201 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 15:15:15,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:15,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:15:15,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:15,672 INFO L124 PetriNetUnfolderBase]: 188/350 cut-off events. [2024-06-04 15:15:15,673 INFO L125 PetriNetUnfolderBase]: For 1837/1837 co-relation queries the response was YES. [2024-06-04 15:15:15,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1331 conditions, 350 events. 188/350 cut-off events. For 1837/1837 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1219 event pairs, 49 based on Foata normal form. 2/351 useless extension candidates. Maximal degree in co-relation 1306. Up to 291 conditions per place. [2024-06-04 15:15:15,675 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 41 selfloop transitions, 12 changer transitions 0/57 dead transitions. [2024-06-04 15:15:15,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 57 transitions, 359 flow [2024-06-04 15:15:15,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:15:15,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:15:15,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-06-04 15:15:15,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38392857142857145 [2024-06-04 15:15:15,676 INFO L175 Difference]: Start difference. First operand has 51 places, 39 transitions, 201 flow. Second operand 7 states and 86 transitions. [2024-06-04 15:15:15,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 57 transitions, 359 flow [2024-06-04 15:15:15,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 57 transitions, 336 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-04 15:15:15,679 INFO L231 Difference]: Finished difference. Result has 54 places, 43 transitions, 234 flow [2024-06-04 15:15:15,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=178, 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=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=234, PETRI_PLACES=54, PETRI_TRANSITIONS=43} [2024-06-04 15:15:15,682 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 23 predicate places. [2024-06-04 15:15:15,684 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 43 transitions, 234 flow [2024-06-04 15:15:15,684 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 15:15:15,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:15,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:15,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-04 15:15:15,685 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 15:15:15,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:15,685 INFO L85 PathProgramCache]: Analyzing trace with hash 2102272346, now seen corresponding path program 2 times [2024-06-04 15:15:15,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:15,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667431331] [2024-06-04 15:15:15,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:15,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:15,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:16,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:15:16,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:16,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667431331] [2024-06-04 15:15:16,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667431331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:16,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:16,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:15:16,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341072919] [2024-06-04 15:15:16,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:16,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:15:16,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:16,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:15:16,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:15:16,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:15:16,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 43 transitions, 234 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 15:15:16,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:16,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:15:16,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:16,531 INFO L124 PetriNetUnfolderBase]: 199/368 cut-off events. [2024-06-04 15:15:16,531 INFO L125 PetriNetUnfolderBase]: For 2340/2340 co-relation queries the response was YES. [2024-06-04 15:15:16,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1524 conditions, 368 events. 199/368 cut-off events. For 2340/2340 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1298 event pairs, 49 based on Foata normal form. 2/369 useless extension candidates. Maximal degree in co-relation 1497. Up to 296 conditions per place. [2024-06-04 15:15:16,533 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 40 selfloop transitions, 16 changer transitions 0/60 dead transitions. [2024-06-04 15:15:16,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 60 transitions, 432 flow [2024-06-04 15:15:16,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:15:16,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:15:16,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-06-04 15:15:16,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38839285714285715 [2024-06-04 15:15:16,534 INFO L175 Difference]: Start difference. First operand has 54 places, 43 transitions, 234 flow. Second operand 7 states and 87 transitions. [2024-06-04 15:15:16,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 60 transitions, 432 flow [2024-06-04 15:15:16,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 60 transitions, 412 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-04 15:15:16,537 INFO L231 Difference]: Finished difference. Result has 58 places, 47 transitions, 287 flow [2024-06-04 15:15:16,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=287, PETRI_PLACES=58, PETRI_TRANSITIONS=47} [2024-06-04 15:15:16,538 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 27 predicate places. [2024-06-04 15:15:16,538 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 47 transitions, 287 flow [2024-06-04 15:15:16,538 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 15:15:16,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:16,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:16,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-04 15:15:16,538 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 15:15:16,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:16,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1931570102, now seen corresponding path program 1 times [2024-06-04 15:15:16,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:16,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006133528] [2024-06-04 15:15:16,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:16,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:16,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:17,117 INFO 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 15:15:17,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:17,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006133528] [2024-06-04 15:15:17,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006133528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:17,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:17,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:15:17,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301263488] [2024-06-04 15:15:17,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:17,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:15:17,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:17,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:15:17,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:15:17,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:15:17,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 47 transitions, 287 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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 15:15:17,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:17,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:15:17,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:17,311 INFO L124 PetriNetUnfolderBase]: 216/387 cut-off events. [2024-06-04 15:15:17,312 INFO L125 PetriNetUnfolderBase]: For 2783/2783 co-relation queries the response was YES. [2024-06-04 15:15:17,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1686 conditions, 387 events. 216/387 cut-off events. For 2783/2783 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1334 event pairs, 51 based on Foata normal form. 1/387 useless extension candidates. Maximal degree in co-relation 1658. Up to 363 conditions per place. [2024-06-04 15:15:17,314 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 47 selfloop transitions, 10 changer transitions 0/59 dead transitions. [2024-06-04 15:15:17,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 59 transitions, 437 flow [2024-06-04 15:15:17,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:15:17,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:15:17,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 75 transitions. [2024-06-04 15:15:17,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33482142857142855 [2024-06-04 15:15:17,315 INFO L175 Difference]: Start difference. First operand has 58 places, 47 transitions, 287 flow. Second operand 7 states and 75 transitions. [2024-06-04 15:15:17,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 59 transitions, 437 flow [2024-06-04 15:15:17,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 59 transitions, 415 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-04 15:15:17,319 INFO L231 Difference]: Finished difference. Result has 62 places, 49 transitions, 306 flow [2024-06-04 15:15:17,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=306, PETRI_PLACES=62, PETRI_TRANSITIONS=49} [2024-06-04 15:15:17,319 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 31 predicate places. [2024-06-04 15:15:17,319 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 49 transitions, 306 flow [2024-06-04 15:15:17,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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 15:15:17,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:17,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:17,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-04 15:15:17,320 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 15:15:17,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:17,320 INFO L85 PathProgramCache]: Analyzing trace with hash 2108701622, now seen corresponding path program 2 times [2024-06-04 15:15:17,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:17,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239213488] [2024-06-04 15:15:17,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:17,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:17,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:17,941 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 15:15:17,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:17,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239213488] [2024-06-04 15:15:17,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239213488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:17,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:17,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:15:17,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196043204] [2024-06-04 15:15:17,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:17,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:15:17,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:17,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:15:17,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:15:17,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:15:17,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 49 transitions, 306 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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 15:15:17,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:17,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:15:17,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:18,109 INFO L124 PetriNetUnfolderBase]: 219/393 cut-off events. [2024-06-04 15:15:18,109 INFO L125 PetriNetUnfolderBase]: For 3257/3263 co-relation queries the response was YES. [2024-06-04 15:15:18,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1783 conditions, 393 events. 219/393 cut-off events. For 3257/3263 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1360 event pairs, 55 based on Foata normal form. 5/396 useless extension candidates. Maximal degree in co-relation 1753. Up to 352 conditions per place. [2024-06-04 15:15:18,115 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 42 selfloop transitions, 17 changer transitions 0/61 dead transitions. [2024-06-04 15:15:18,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 61 transitions, 498 flow [2024-06-04 15:15:18,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:15:18,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:15:18,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 77 transitions. [2024-06-04 15:15:18,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 15:15:18,116 INFO L175 Difference]: Start difference. First operand has 62 places, 49 transitions, 306 flow. Second operand 7 states and 77 transitions. [2024-06-04 15:15:18,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 61 transitions, 498 flow [2024-06-04 15:15:18,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 61 transitions, 473 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-04 15:15:18,120 INFO L231 Difference]: Finished difference. Result has 64 places, 53 transitions, 356 flow [2024-06-04 15:15:18,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=356, PETRI_PLACES=64, PETRI_TRANSITIONS=53} [2024-06-04 15:15:18,121 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 33 predicate places. [2024-06-04 15:15:18,121 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 53 transitions, 356 flow [2024-06-04 15:15:18,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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 15:15:18,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:18,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:18,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-04 15:15:18,122 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 15:15:18,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:18,122 INFO L85 PathProgramCache]: Analyzing trace with hash 2108701436, now seen corresponding path program 3 times [2024-06-04 15:15:18,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:18,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789127158] [2024-06-04 15:15:18,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:18,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:18,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:18,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:15:18,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:18,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789127158] [2024-06-04 15:15:18,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789127158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:18,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:18,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:15:18,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497562373] [2024-06-04 15:15:18,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:18,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:15:18,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:18,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:15:18,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:15:18,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:15:18,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 53 transitions, 356 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 15:15:18,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:18,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:15:18,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:18,945 INFO L124 PetriNetUnfolderBase]: 202/375 cut-off events. [2024-06-04 15:15:18,945 INFO L125 PetriNetUnfolderBase]: For 3807/3810 co-relation queries the response was YES. [2024-06-04 15:15:18,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1754 conditions, 375 events. 202/375 cut-off events. For 3807/3810 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1330 event pairs, 58 based on Foata normal form. 2/374 useless extension candidates. Maximal degree in co-relation 1723. Up to 285 conditions per place. [2024-06-04 15:15:18,948 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 38 selfloop transitions, 20 changer transitions 0/65 dead transitions. [2024-06-04 15:15:18,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 65 transitions, 544 flow [2024-06-04 15:15:18,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:15:18,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:15:18,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-06-04 15:15:18,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38392857142857145 [2024-06-04 15:15:18,949 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 356 flow. Second operand 7 states and 86 transitions. [2024-06-04 15:15:18,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 65 transitions, 544 flow [2024-06-04 15:15:18,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 65 transitions, 518 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-04 15:15:18,952 INFO L231 Difference]: Finished difference. Result has 68 places, 55 transitions, 399 flow [2024-06-04 15:15:18,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=399, PETRI_PLACES=68, PETRI_TRANSITIONS=55} [2024-06-04 15:15:18,953 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 37 predicate places. [2024-06-04 15:15:18,953 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 55 transitions, 399 flow [2024-06-04 15:15:18,953 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 15:15:18,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:18,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:18,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-04 15:15:18,954 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 15:15:18,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:18,954 INFO L85 PathProgramCache]: Analyzing trace with hash 2108938772, now seen corresponding path program 3 times [2024-06-04 15:15:18,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:18,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90000478] [2024-06-04 15:15:18,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:18,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:19,579 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 15:15:19,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:19,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90000478] [2024-06-04 15:15:19,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90000478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:19,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:19,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:15:19,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108569178] [2024-06-04 15:15:19,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:19,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:15:19,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:19,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:15:19,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:15:19,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:15:19,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 55 transitions, 399 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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 15:15:19,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:19,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:15:19,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:19,737 INFO L124 PetriNetUnfolderBase]: 213/384 cut-off events. [2024-06-04 15:15:19,737 INFO L125 PetriNetUnfolderBase]: For 4096/4102 co-relation queries the response was YES. [2024-06-04 15:15:19,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1879 conditions, 384 events. 213/384 cut-off events. For 4096/4102 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1343 event pairs, 54 based on Foata normal form. 5/387 useless extension candidates. Maximal degree in co-relation 1846. Up to 344 conditions per place. [2024-06-04 15:15:19,740 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 42 selfloop transitions, 18 changer transitions 0/62 dead transitions. [2024-06-04 15:15:19,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 62 transitions, 535 flow [2024-06-04 15:15:19,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:15:19,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:15:19,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 75 transitions. [2024-06-04 15:15:19,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33482142857142855 [2024-06-04 15:15:19,741 INFO L175 Difference]: Start difference. First operand has 68 places, 55 transitions, 399 flow. Second operand 7 states and 75 transitions. [2024-06-04 15:15:19,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 62 transitions, 535 flow [2024-06-04 15:15:19,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 62 transitions, 472 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-04 15:15:19,745 INFO L231 Difference]: Finished difference. Result has 70 places, 55 transitions, 377 flow [2024-06-04 15:15:19,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=377, PETRI_PLACES=70, PETRI_TRANSITIONS=55} [2024-06-04 15:15:19,745 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 39 predicate places. [2024-06-04 15:15:19,745 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 55 transitions, 377 flow [2024-06-04 15:15:19,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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 15:15:19,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:19,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:19,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-04 15:15:19,746 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 15:15:19,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:19,746 INFO L85 PathProgramCache]: Analyzing trace with hash -400972409, now seen corresponding path program 1 times [2024-06-04 15:15:19,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:19,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266996173] [2024-06-04 15:15:19,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:19,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:19,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:20,579 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 15:15:20,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:20,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266996173] [2024-06-04 15:15:20,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266996173] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:20,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:20,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:15:20,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537753550] [2024-06-04 15:15:20,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:20,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:15:20,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:20,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:15:20,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:15:20,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:15:20,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 55 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 15:15:20,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:20,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:15:20,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:20,899 INFO L124 PetriNetUnfolderBase]: 229/423 cut-off events. [2024-06-04 15:15:20,899 INFO L125 PetriNetUnfolderBase]: For 4627/4627 co-relation queries the response was YES. [2024-06-04 15:15:20,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2036 conditions, 423 events. 229/423 cut-off events. For 4627/4627 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1578 event pairs, 47 based on Foata normal form. 1/423 useless extension candidates. Maximal degree in co-relation 2002. Up to 336 conditions per place. [2024-06-04 15:15:20,903 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 55 selfloop transitions, 21 changer transitions 0/83 dead transitions. [2024-06-04 15:15:20,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 83 transitions, 677 flow [2024-06-04 15:15:20,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:15:20,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:15:20,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-04 15:15:20,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-04 15:15:20,904 INFO L175 Difference]: Start difference. First operand has 70 places, 55 transitions, 377 flow. Second operand 8 states and 98 transitions. [2024-06-04 15:15:20,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 83 transitions, 677 flow [2024-06-04 15:15:20,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 83 transitions, 632 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-04 15:15:20,922 INFO L231 Difference]: Finished difference. Result has 74 places, 68 transitions, 508 flow [2024-06-04 15:15:20,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=508, PETRI_PLACES=74, PETRI_TRANSITIONS=68} [2024-06-04 15:15:20,922 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 43 predicate places. [2024-06-04 15:15:20,923 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 68 transitions, 508 flow [2024-06-04 15:15:20,923 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 15:15:20,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:20,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:20,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-04 15:15:20,923 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 15:15:20,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:20,924 INFO L85 PathProgramCache]: Analyzing trace with hash -450276355, now seen corresponding path program 2 times [2024-06-04 15:15:20,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:20,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544536730] [2024-06-04 15:15:20,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:20,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:20,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:21,819 INFO 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 15:15:21,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:21,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544536730] [2024-06-04 15:15:21,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544536730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:21,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:21,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:15:21,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111739020] [2024-06-04 15:15:21,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:21,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:15:21,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:21,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:15:21,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:15:21,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:15:21,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 68 transitions, 508 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:21,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:21,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:15:21,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:22,130 INFO L124 PetriNetUnfolderBase]: 228/421 cut-off events. [2024-06-04 15:15:22,130 INFO L125 PetriNetUnfolderBase]: For 5135/5135 co-relation queries the response was YES. [2024-06-04 15:15:22,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2106 conditions, 421 events. 228/421 cut-off events. For 5135/5135 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1574 event pairs, 50 based on Foata normal form. 1/421 useless extension candidates. Maximal degree in co-relation 2069. Up to 321 conditions per place. [2024-06-04 15:15:22,133 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 49 selfloop transitions, 25 changer transitions 0/81 dead transitions. [2024-06-04 15:15:22,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 81 transitions, 696 flow [2024-06-04 15:15:22,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:15:22,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:15:22,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-06-04 15:15:22,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38392857142857145 [2024-06-04 15:15:22,134 INFO L175 Difference]: Start difference. First operand has 74 places, 68 transitions, 508 flow. Second operand 7 states and 86 transitions. [2024-06-04 15:15:22,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 81 transitions, 696 flow [2024-06-04 15:15:22,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 81 transitions, 662 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-04 15:15:22,140 INFO L231 Difference]: Finished difference. Result has 78 places, 68 transitions, 540 flow [2024-06-04 15:15:22,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=540, PETRI_PLACES=78, PETRI_TRANSITIONS=68} [2024-06-04 15:15:22,140 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 47 predicate places. [2024-06-04 15:15:22,140 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 68 transitions, 540 flow [2024-06-04 15:15:22,141 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 15:15:22,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:22,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:22,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-04 15:15:22,141 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 15:15:22,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:22,141 INFO L85 PathProgramCache]: Analyzing trace with hash -450185990, now seen corresponding path program 1 times [2024-06-04 15:15:22,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:22,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463667754] [2024-06-04 15:15:22,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:22,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:22,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:22,741 INFO 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 15:15:22,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:22,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463667754] [2024-06-04 15:15:22,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463667754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:22,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:22,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:15:22,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157241651] [2024-06-04 15:15:22,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:22,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:15:22,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:22,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:15:22,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:15:22,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:15:22,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 68 transitions, 540 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:22,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:22,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:15:22,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:22,999 INFO L124 PetriNetUnfolderBase]: 246/443 cut-off events. [2024-06-04 15:15:22,999 INFO L125 PetriNetUnfolderBase]: For 5920/5920 co-relation queries the response was YES. [2024-06-04 15:15:23,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2270 conditions, 443 events. 246/443 cut-off events. For 5920/5920 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1619 event pairs, 50 based on Foata normal form. 2/444 useless extension candidates. Maximal degree in co-relation 2232. Up to 359 conditions per place. [2024-06-04 15:15:23,002 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 59 selfloop transitions, 24 changer transitions 0/85 dead transitions. [2024-06-04 15:15:23,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 85 transitions, 770 flow [2024-06-04 15:15:23,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:15:23,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:15:23,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-04 15:15:23,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34765625 [2024-06-04 15:15:23,003 INFO L175 Difference]: Start difference. First operand has 78 places, 68 transitions, 540 flow. Second operand 8 states and 89 transitions. [2024-06-04 15:15:23,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 85 transitions, 770 flow [2024-06-04 15:15:23,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 85 transitions, 712 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-04 15:15:23,009 INFO L231 Difference]: Finished difference. Result has 80 places, 70 transitions, 558 flow [2024-06-04 15:15:23,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=558, PETRI_PLACES=80, PETRI_TRANSITIONS=70} [2024-06-04 15:15:23,009 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 49 predicate places. [2024-06-04 15:15:23,010 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 70 transitions, 558 flow [2024-06-04 15:15:23,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:23,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:23,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:23,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-04 15:15:23,010 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 15:15:23,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:23,011 INFO L85 PathProgramCache]: Analyzing trace with hash 745934754, now seen corresponding path program 2 times [2024-06-04 15:15:23,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:23,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445296829] [2024-06-04 15:15:23,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:23,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:23,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:23,639 INFO 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 15:15:23,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:23,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445296829] [2024-06-04 15:15:23,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445296829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:23,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:23,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:15:23,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608306126] [2024-06-04 15:15:23,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:23,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:15:23,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:23,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:15:23,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:15:23,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:15:23,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 70 transitions, 558 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:23,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:23,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:15:23,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:23,885 INFO L124 PetriNetUnfolderBase]: 267/477 cut-off events. [2024-06-04 15:15:23,885 INFO L125 PetriNetUnfolderBase]: For 6650/6650 co-relation queries the response was YES. [2024-06-04 15:15:23,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2526 conditions, 477 events. 267/477 cut-off events. For 6650/6650 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1782 event pairs, 58 based on Foata normal form. 2/478 useless extension candidates. Maximal degree in co-relation 2487. Up to 348 conditions per place. [2024-06-04 15:15:23,889 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 57 selfloop transitions, 32 changer transitions 0/91 dead transitions. [2024-06-04 15:15:23,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 91 transitions, 912 flow [2024-06-04 15:15:23,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:15:23,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:15:23,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-04 15:15:23,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36328125 [2024-06-04 15:15:23,890 INFO L175 Difference]: Start difference. First operand has 80 places, 70 transitions, 558 flow. Second operand 8 states and 93 transitions. [2024-06-04 15:15:23,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 91 transitions, 912 flow [2024-06-04 15:15:23,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 91 transitions, 854 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-04 15:15:23,897 INFO L231 Difference]: Finished difference. Result has 82 places, 76 transitions, 639 flow [2024-06-04 15:15:23,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=639, PETRI_PLACES=82, PETRI_TRANSITIONS=76} [2024-06-04 15:15:23,897 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 51 predicate places. [2024-06-04 15:15:23,897 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 76 transitions, 639 flow [2024-06-04 15:15:23,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:23,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:23,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:23,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-04 15:15:23,898 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 15:15:23,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:23,899 INFO L85 PathProgramCache]: Analyzing trace with hash -250867483, now seen corresponding path program 1 times [2024-06-04 15:15:23,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:23,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338606471] [2024-06-04 15:15:23,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:23,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:23,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:24,514 INFO 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 15:15:24,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:24,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338606471] [2024-06-04 15:15:24,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338606471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:24,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:24,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:15:24,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833471133] [2024-06-04 15:15:24,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:24,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:15:24,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:24,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:15:24,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:15:24,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:15:24,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 76 transitions, 639 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:24,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:24,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:15:24,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:24,715 INFO L124 PetriNetUnfolderBase]: 270/482 cut-off events. [2024-06-04 15:15:24,716 INFO L125 PetriNetUnfolderBase]: For 7337/7337 co-relation queries the response was YES. [2024-06-04 15:15:24,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2618 conditions, 482 events. 270/482 cut-off events. For 7337/7337 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1803 event pairs, 56 based on Foata normal form. 1/482 useless extension candidates. Maximal degree in co-relation 2578. Up to 448 conditions per place. [2024-06-04 15:15:24,719 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 73 selfloop transitions, 14 changer transitions 0/89 dead transitions. [2024-06-04 15:15:24,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 89 transitions, 859 flow [2024-06-04 15:15:24,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:15:24,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:15:24,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 83 transitions. [2024-06-04 15:15:24,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32421875 [2024-06-04 15:15:24,720 INFO L175 Difference]: Start difference. First operand has 82 places, 76 transitions, 639 flow. Second operand 8 states and 83 transitions. [2024-06-04 15:15:24,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 89 transitions, 859 flow [2024-06-04 15:15:24,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 89 transitions, 822 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-04 15:15:24,727 INFO L231 Difference]: Finished difference. Result has 87 places, 78 transitions, 653 flow [2024-06-04 15:15:24,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=653, PETRI_PLACES=87, PETRI_TRANSITIONS=78} [2024-06-04 15:15:24,728 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 56 predicate places. [2024-06-04 15:15:24,728 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 78 transitions, 653 flow [2024-06-04 15:15:24,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:24,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:24,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:24,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-04 15:15:24,729 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 15:15:24,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:24,729 INFO L85 PathProgramCache]: Analyzing trace with hash -250867700, now seen corresponding path program 3 times [2024-06-04 15:15:24,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:24,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522712050] [2024-06-04 15:15:24,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:24,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:24,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:25,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:15:25,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:25,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522712050] [2024-06-04 15:15:25,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522712050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:25,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:25,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:15:25,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064853946] [2024-06-04 15:15:25,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:25,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:15:25,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:25,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:15:25,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:15:25,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:15:25,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 78 transitions, 653 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:25,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:25,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:15:25,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:25,582 INFO L124 PetriNetUnfolderBase]: 266/476 cut-off events. [2024-06-04 15:15:25,582 INFO L125 PetriNetUnfolderBase]: For 7627/7627 co-relation queries the response was YES. [2024-06-04 15:15:25,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2622 conditions, 476 events. 266/476 cut-off events. For 7627/7627 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1786 event pairs, 54 based on Foata normal form. 2/477 useless extension candidates. Maximal degree in co-relation 2580. Up to 350 conditions per place. [2024-06-04 15:15:25,586 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 54 selfloop transitions, 36 changer transitions 0/92 dead transitions. [2024-06-04 15:15:25,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 92 transitions, 911 flow [2024-06-04 15:15:25,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:15:25,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:15:25,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-04 15:15:25,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35546875 [2024-06-04 15:15:25,587 INFO L175 Difference]: Start difference. First operand has 87 places, 78 transitions, 653 flow. Second operand 8 states and 91 transitions. [2024-06-04 15:15:25,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 92 transitions, 911 flow [2024-06-04 15:15:25,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 92 transitions, 862 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-04 15:15:25,598 INFO L231 Difference]: Finished difference. Result has 89 places, 78 transitions, 681 flow [2024-06-04 15:15:25,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=681, PETRI_PLACES=89, PETRI_TRANSITIONS=78} [2024-06-04 15:15:25,598 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 58 predicate places. [2024-06-04 15:15:25,598 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 78 transitions, 681 flow [2024-06-04 15:15:25,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:25,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:25,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:25,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-04 15:15:25,599 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 15:15:25,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:25,600 INFO L85 PathProgramCache]: Analyzing trace with hash 945242124, now seen corresponding path program 4 times [2024-06-04 15:15:25,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:25,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983919820] [2024-06-04 15:15:25,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:25,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:25,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:26,214 INFO 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 15:15:26,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:26,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983919820] [2024-06-04 15:15:26,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983919820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:26,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:26,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:15:26,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995749557] [2024-06-04 15:15:26,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:26,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:15:26,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:26,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:15:26,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:15:26,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:15:26,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 78 transitions, 681 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:26,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:26,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:15:26,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:26,439 INFO L124 PetriNetUnfolderBase]: 282/503 cut-off events. [2024-06-04 15:15:26,440 INFO L125 PetriNetUnfolderBase]: For 9075/9081 co-relation queries the response was YES. [2024-06-04 15:15:26,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2873 conditions, 503 events. 282/503 cut-off events. For 9075/9081 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1894 event pairs, 67 based on Foata normal form. 2/500 useless extension candidates. Maximal degree in co-relation 2830. Up to 329 conditions per place. [2024-06-04 15:15:26,443 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 54 selfloop transitions, 43 changer transitions 0/99 dead transitions. [2024-06-04 15:15:26,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 99 transitions, 1115 flow [2024-06-04 15:15:26,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:15:26,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:15:26,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-04 15:15:26,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 15:15:26,445 INFO L175 Difference]: Start difference. First operand has 89 places, 78 transitions, 681 flow. Second operand 8 states and 96 transitions. [2024-06-04 15:15:26,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 99 transitions, 1115 flow [2024-06-04 15:15:26,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 99 transitions, 1050 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-04 15:15:26,455 INFO L231 Difference]: Finished difference. Result has 91 places, 84 transitions, 789 flow [2024-06-04 15:15:26,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=789, PETRI_PLACES=91, PETRI_TRANSITIONS=84} [2024-06-04 15:15:26,455 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 60 predicate places. [2024-06-04 15:15:26,455 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 84 transitions, 789 flow [2024-06-04 15:15:26,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:26,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:26,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:26,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-04 15:15:26,456 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 15:15:26,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:26,456 INFO L85 PathProgramCache]: Analyzing trace with hash 945242341, now seen corresponding path program 2 times [2024-06-04 15:15:26,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:26,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386914254] [2024-06-04 15:15:26,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:26,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:26,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:27,070 INFO 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 15:15:27,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:27,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386914254] [2024-06-04 15:15:27,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386914254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:27,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:27,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:15:27,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803413252] [2024-06-04 15:15:27,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:27,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:15:27,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:27,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:15:27,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:15:27,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:15:27,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 84 transitions, 789 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:27,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:27,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:15:27,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:27,219 INFO L124 PetriNetUnfolderBase]: 285/508 cut-off events. [2024-06-04 15:15:27,219 INFO L125 PetriNetUnfolderBase]: For 9781/9787 co-relation queries the response was YES. [2024-06-04 15:15:27,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2992 conditions, 508 events. 285/508 cut-off events. For 9781/9787 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1934 event pairs, 61 based on Foata normal form. 5/510 useless extension candidates. Maximal degree in co-relation 2948. Up to 446 conditions per place. [2024-06-04 15:15:27,224 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 74 selfloop transitions, 24 changer transitions 0/100 dead transitions. [2024-06-04 15:15:27,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 100 transitions, 1099 flow [2024-06-04 15:15:27,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:15:27,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:15:27,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-04 15:15:27,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33984375 [2024-06-04 15:15:27,225 INFO L175 Difference]: Start difference. First operand has 91 places, 84 transitions, 789 flow. Second operand 8 states and 87 transitions. [2024-06-04 15:15:27,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 100 transitions, 1099 flow [2024-06-04 15:15:27,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 100 transitions, 1001 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-04 15:15:27,236 INFO L231 Difference]: Finished difference. Result has 96 places, 90 transitions, 805 flow [2024-06-04 15:15:27,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=805, PETRI_PLACES=96, PETRI_TRANSITIONS=90} [2024-06-04 15:15:27,237 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 65 predicate places. [2024-06-04 15:15:27,237 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 90 transitions, 805 flow [2024-06-04 15:15:27,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:27,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:27,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:27,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-04 15:15:27,238 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 15:15:27,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:27,238 INFO L85 PathProgramCache]: Analyzing trace with hash 945236544, now seen corresponding path program 5 times [2024-06-04 15:15:27,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:27,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357100359] [2024-06-04 15:15:27,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:27,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:27,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:27,754 INFO 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 15:15:27,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:27,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357100359] [2024-06-04 15:15:27,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357100359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:27,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:27,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:15:27,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722860407] [2024-06-04 15:15:27,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:27,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:15:27,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:27,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:15:27,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:15:27,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:15:27,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 90 transitions, 805 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:27,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:27,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:15:27,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:27,942 INFO L124 PetriNetUnfolderBase]: 281/502 cut-off events. [2024-06-04 15:15:27,942 INFO L125 PetriNetUnfolderBase]: For 10076/10082 co-relation queries the response was YES. [2024-06-04 15:15:27,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2911 conditions, 502 events. 281/502 cut-off events. For 10076/10082 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1901 event pairs, 67 based on Foata normal form. 2/499 useless extension candidates. Maximal degree in co-relation 2865. Up to 331 conditions per place. [2024-06-04 15:15:27,948 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 57 selfloop transitions, 44 changer transitions 0/103 dead transitions. [2024-06-04 15:15:27,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 103 transitions, 1131 flow [2024-06-04 15:15:27,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:15:27,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:15:27,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-04 15:15:27,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36328125 [2024-06-04 15:15:27,950 INFO L175 Difference]: Start difference. First operand has 96 places, 90 transitions, 805 flow. Second operand 8 states and 93 transitions. [2024-06-04 15:15:27,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 103 transitions, 1131 flow [2024-06-04 15:15:27,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 103 transitions, 1092 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-04 15:15:27,964 INFO L231 Difference]: Finished difference. Result has 101 places, 90 transitions, 859 flow [2024-06-04 15:15:27,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=859, PETRI_PLACES=101, PETRI_TRANSITIONS=90} [2024-06-04 15:15:27,965 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 70 predicate places. [2024-06-04 15:15:27,965 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 90 transitions, 859 flow [2024-06-04 15:15:27,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:27,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:27,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:27,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-04 15:15:27,966 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 15:15:27,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:27,967 INFO L85 PathProgramCache]: Analyzing trace with hash 952593991, now seen corresponding path program 3 times [2024-06-04 15:15:27,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:27,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935641100] [2024-06-04 15:15:27,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:27,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:27,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:28,595 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 15:15:28,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:28,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935641100] [2024-06-04 15:15:28,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935641100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:28,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:28,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:15:28,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276703580] [2024-06-04 15:15:28,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:28,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:15:28,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:28,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:15:28,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:15:28,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:15:28,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 90 transitions, 859 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:28,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:28,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:15:28,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:28,791 INFO L124 PetriNetUnfolderBase]: 284/507 cut-off events. [2024-06-04 15:15:28,791 INFO L125 PetriNetUnfolderBase]: For 10758/10764 co-relation queries the response was YES. [2024-06-04 15:15:28,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3054 conditions, 507 events. 284/507 cut-off events. For 10758/10764 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1929 event pairs, 60 based on Foata normal form. 5/509 useless extension candidates. Maximal degree in co-relation 3006. Up to 444 conditions per place. [2024-06-04 15:15:28,795 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 73 selfloop transitions, 27 changer transitions 0/102 dead transitions. [2024-06-04 15:15:28,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 102 transitions, 1155 flow [2024-06-04 15:15:28,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:15:28,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:15:28,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-04 15:15:28,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-04 15:15:28,797 INFO L175 Difference]: Start difference. First operand has 101 places, 90 transitions, 859 flow. Second operand 8 states and 86 transitions. [2024-06-04 15:15:28,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 102 transitions, 1155 flow [2024-06-04 15:15:28,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 102 transitions, 1069 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-04 15:15:28,809 INFO L231 Difference]: Finished difference. Result has 103 places, 92 transitions, 854 flow [2024-06-04 15:15:28,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=773, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=854, PETRI_PLACES=103, PETRI_TRANSITIONS=92} [2024-06-04 15:15:28,809 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 72 predicate places. [2024-06-04 15:15:28,809 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 92 transitions, 854 flow [2024-06-04 15:15:28,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:28,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:28,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:28,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-04 15:15:28,811 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 15:15:28,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:28,812 INFO L85 PathProgramCache]: Analyzing trace with hash 952593774, now seen corresponding path program 6 times [2024-06-04 15:15:28,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:28,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596771817] [2024-06-04 15:15:28,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:28,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:28,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:29,437 INFO 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 15:15:29,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:29,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596771817] [2024-06-04 15:15:29,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596771817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:29,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:29,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:15:29,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091720201] [2024-06-04 15:15:29,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:29,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:15:29,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:29,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:15:29,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:15:29,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:15:29,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 92 transitions, 854 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:29,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:29,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:15:29,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:29,641 INFO L124 PetriNetUnfolderBase]: 280/501 cut-off events. [2024-06-04 15:15:29,642 INFO L125 PetriNetUnfolderBase]: For 11194/11200 co-relation queries the response was YES. [2024-06-04 15:15:29,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2962 conditions, 501 events. 280/501 cut-off events. For 11194/11200 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1883 event pairs, 62 based on Foata normal form. 2/498 useless extension candidates. Maximal degree in co-relation 2913. Up to 333 conditions per place. [2024-06-04 15:15:29,652 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 53 selfloop transitions, 49 changer transitions 0/104 dead transitions. [2024-06-04 15:15:29,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 104 transitions, 1140 flow [2024-06-04 15:15:29,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:15:29,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:15:29,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-04 15:15:29,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35546875 [2024-06-04 15:15:29,656 INFO L175 Difference]: Start difference. First operand has 103 places, 92 transitions, 854 flow. Second operand 8 states and 91 transitions. [2024-06-04 15:15:29,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 104 transitions, 1140 flow [2024-06-04 15:15:29,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 104 transitions, 1071 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-04 15:15:29,668 INFO L231 Difference]: Finished difference. Result has 106 places, 92 transitions, 888 flow [2024-06-04 15:15:29,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=785, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=888, PETRI_PLACES=106, PETRI_TRANSITIONS=92} [2024-06-04 15:15:29,669 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 75 predicate places. [2024-06-04 15:15:29,669 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 92 transitions, 888 flow [2024-06-04 15:15:29,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:29,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:29,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:29,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-04 15:15:29,670 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 15:15:29,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:29,670 INFO L85 PathProgramCache]: Analyzing trace with hash 952860901, now seen corresponding path program 4 times [2024-06-04 15:15:29,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:29,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604485408] [2024-06-04 15:15:29,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:29,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:29,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:30,319 INFO 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 15:15:30,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:30,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604485408] [2024-06-04 15:15:30,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604485408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:30,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:30,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:15:30,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052567850] [2024-06-04 15:15:30,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:30,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:15:30,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:30,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:15:30,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:15:30,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:15:30,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 92 transitions, 888 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:30,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:30,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:15:30,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:30,529 INFO L124 PetriNetUnfolderBase]: 278/498 cut-off events. [2024-06-04 15:15:30,529 INFO L125 PetriNetUnfolderBase]: For 11439/11445 co-relation queries the response was YES. [2024-06-04 15:15:30,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3001 conditions, 498 events. 278/498 cut-off events. For 11439/11445 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1892 event pairs, 59 based on Foata normal form. 5/500 useless extension candidates. Maximal degree in co-relation 2951. Up to 436 conditions per place. [2024-06-04 15:15:30,532 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 70 selfloop transitions, 29 changer transitions 0/101 dead transitions. [2024-06-04 15:15:30,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 101 transitions, 1112 flow [2024-06-04 15:15:30,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:15:30,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:15:30,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-04 15:15:30,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-04 15:15:30,534 INFO L175 Difference]: Start difference. First operand has 106 places, 92 transitions, 888 flow. Second operand 8 states and 84 transitions. [2024-06-04 15:15:30,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 101 transitions, 1112 flow [2024-06-04 15:15:30,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 101 transitions, 986 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-04 15:15:30,545 INFO L231 Difference]: Finished difference. Result has 106 places, 92 transitions, 825 flow [2024-06-04 15:15:30,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=825, PETRI_PLACES=106, PETRI_TRANSITIONS=92} [2024-06-04 15:15:30,545 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 75 predicate places. [2024-06-04 15:15:30,545 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 92 transitions, 825 flow [2024-06-04 15:15:30,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:30,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:30,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:30,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-04 15:15:30,546 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 15:15:30,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:30,547 INFO L85 PathProgramCache]: Analyzing trace with hash 952870821, now seen corresponding path program 1 times [2024-06-04 15:15:30,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:30,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608150921] [2024-06-04 15:15:30,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:30,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:30,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:31,301 INFO 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 15:15:31,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:31,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608150921] [2024-06-04 15:15:31,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608150921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:31,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:31,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:15:31,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068055898] [2024-06-04 15:15:31,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:31,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:15:31,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:31,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:15:31,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:15:31,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:15:31,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 92 transitions, 825 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:31,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:31,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:15:31,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:31,557 INFO L124 PetriNetUnfolderBase]: 276/494 cut-off events. [2024-06-04 15:15:31,572 INFO L125 PetriNetUnfolderBase]: For 11661/11661 co-relation queries the response was YES. [2024-06-04 15:15:31,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2916 conditions, 494 events. 276/494 cut-off events. For 11661/11661 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1886 event pairs, 62 based on Foata normal form. 1/494 useless extension candidates. Maximal degree in co-relation 2865. Up to 467 conditions per place. [2024-06-04 15:15:31,576 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 87 selfloop transitions, 14 changer transitions 0/103 dead transitions. [2024-06-04 15:15:31,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 103 transitions, 1061 flow [2024-06-04 15:15:31,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:15:31,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:15:31,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-06-04 15:15:31,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3055555555555556 [2024-06-04 15:15:31,577 INFO L175 Difference]: Start difference. First operand has 106 places, 92 transitions, 825 flow. Second operand 9 states and 88 transitions. [2024-06-04 15:15:31,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 103 transitions, 1061 flow [2024-06-04 15:15:31,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 103 transitions, 1010 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-04 15:15:31,606 INFO L231 Difference]: Finished difference. Result has 109 places, 94 transitions, 823 flow [2024-06-04 15:15:31,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=774, PETRI_DIFFERENCE_MINUEND_PLACES=100, 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=823, PETRI_PLACES=109, PETRI_TRANSITIONS=94} [2024-06-04 15:15:31,610 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 78 predicate places. [2024-06-04 15:15:31,611 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 94 transitions, 823 flow [2024-06-04 15:15:31,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:31,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:31,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:31,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-04 15:15:31,611 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 15:15:31,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:31,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1073724223, now seen corresponding path program 1 times [2024-06-04 15:15:31,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:31,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696223769] [2024-06-04 15:15:31,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:31,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:31,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:32,631 INFO 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 15:15:32,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:32,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696223769] [2024-06-04 15:15:32,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696223769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:32,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:32,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:15:32,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116772154] [2024-06-04 15:15:32,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:32,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:15:32,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:32,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:15:32,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:15:32,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:15:32,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 94 transitions, 823 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 15:15:32,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:32,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:15:32,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:33,035 INFO L124 PetriNetUnfolderBase]: 264/486 cut-off events. [2024-06-04 15:15:33,035 INFO L125 PetriNetUnfolderBase]: For 13264/13266 co-relation queries the response was YES. [2024-06-04 15:15:33,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2946 conditions, 486 events. 264/486 cut-off events. For 13264/13266 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1929 event pairs, 33 based on Foata normal form. 2/484 useless extension candidates. Maximal degree in co-relation 2894. Up to 363 conditions per place. [2024-06-04 15:15:33,038 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 77 selfloop transitions, 19 changer transitions 0/110 dead transitions. [2024-06-04 15:15:33,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 110 transitions, 1071 flow [2024-06-04 15:15:33,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:15:33,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:15:33,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-04 15:15:33,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36328125 [2024-06-04 15:15:33,040 INFO L175 Difference]: Start difference. First operand has 109 places, 94 transitions, 823 flow. Second operand 8 states and 93 transitions. [2024-06-04 15:15:33,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 110 transitions, 1071 flow [2024-06-04 15:15:33,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 110 transitions, 990 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-04 15:15:33,076 INFO L231 Difference]: Finished difference. Result has 107 places, 95 transitions, 800 flow [2024-06-04 15:15:33,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=800, PETRI_PLACES=107, PETRI_TRANSITIONS=95} [2024-06-04 15:15:33,078 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 76 predicate places. [2024-06-04 15:15:33,078 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 95 transitions, 800 flow [2024-06-04 15:15:33,079 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 15:15:33,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:33,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:33,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-04 15:15:33,079 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 15:15:33,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:33,080 INFO L85 PathProgramCache]: Analyzing trace with hash 808275481, now seen corresponding path program 2 times [2024-06-04 15:15:33,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:33,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293920992] [2024-06-04 15:15:33,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:33,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:33,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:33,831 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 15:15:33,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:33,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293920992] [2024-06-04 15:15:33,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293920992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:33,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:33,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:15:33,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346803341] [2024-06-04 15:15:33,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:33,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:15:33,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:33,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:15:33,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:15:33,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:15:33,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 95 transitions, 800 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 15:15:33,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:33,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:15:33,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:34,191 INFO L124 PetriNetUnfolderBase]: 263/489 cut-off events. [2024-06-04 15:15:34,193 INFO L125 PetriNetUnfolderBase]: For 13839/13839 co-relation queries the response was YES. [2024-06-04 15:15:34,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2957 conditions, 489 events. 263/489 cut-off events. For 13839/13839 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1953 event pairs, 48 based on Foata normal form. 2/490 useless extension candidates. Maximal degree in co-relation 2905. Up to 364 conditions per place. [2024-06-04 15:15:34,210 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 71 selfloop transitions, 26 changer transitions 0/111 dead transitions. [2024-06-04 15:15:34,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 111 transitions, 1054 flow [2024-06-04 15:15:34,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:15:34,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:15:34,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-04 15:15:34,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37109375 [2024-06-04 15:15:34,211 INFO L175 Difference]: Start difference. First operand has 107 places, 95 transitions, 800 flow. Second operand 8 states and 95 transitions. [2024-06-04 15:15:34,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 111 transitions, 1054 flow [2024-06-04 15:15:34,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 111 transitions, 1006 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-04 15:15:34,237 INFO L231 Difference]: Finished difference. Result has 109 places, 96 transitions, 829 flow [2024-06-04 15:15:34,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=752, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=829, PETRI_PLACES=109, PETRI_TRANSITIONS=96} [2024-06-04 15:15:34,237 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 78 predicate places. [2024-06-04 15:15:34,237 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 96 transitions, 829 flow [2024-06-04 15:15:34,238 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 15:15:34,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:34,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:34,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-04 15:15:34,238 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 15:15:34,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:34,238 INFO L85 PathProgramCache]: Analyzing trace with hash 694771895, now seen corresponding path program 1 times [2024-06-04 15:15:34,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:34,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097890112] [2024-06-04 15:15:34,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:34,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:34,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:34,950 INFO 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 15:15:34,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:34,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097890112] [2024-06-04 15:15:34,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097890112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:34,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:34,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:15:34,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194857570] [2024-06-04 15:15:34,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:34,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:15:34,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:34,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:15:34,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:15:35,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:15:35,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 96 transitions, 829 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:35,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:35,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:15:35,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:35,267 INFO L124 PetriNetUnfolderBase]: 282/507 cut-off events. [2024-06-04 15:15:35,268 INFO L125 PetriNetUnfolderBase]: For 14105/14105 co-relation queries the response was YES. [2024-06-04 15:15:35,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3043 conditions, 507 events. 282/507 cut-off events. For 14105/14105 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1950 event pairs, 50 based on Foata normal form. 1/507 useless extension candidates. Maximal degree in co-relation 2990. Up to 410 conditions per place. [2024-06-04 15:15:35,271 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 80 selfloop transitions, 29 changer transitions 0/111 dead transitions. [2024-06-04 15:15:35,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 111 transitions, 1093 flow [2024-06-04 15:15:35,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:15:35,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:15:35,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-04 15:15:35,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34765625 [2024-06-04 15:15:35,272 INFO L175 Difference]: Start difference. First operand has 109 places, 96 transitions, 829 flow. Second operand 8 states and 89 transitions. [2024-06-04 15:15:35,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 111 transitions, 1093 flow [2024-06-04 15:15:35,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 111 transitions, 1024 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-04 15:15:35,286 INFO L231 Difference]: Finished difference. Result has 111 places, 96 transitions, 828 flow [2024-06-04 15:15:35,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=828, PETRI_PLACES=111, PETRI_TRANSITIONS=96} [2024-06-04 15:15:35,286 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 80 predicate places. [2024-06-04 15:15:35,286 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 96 transitions, 828 flow [2024-06-04 15:15:35,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:35,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:35,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:35,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-04 15:15:35,287 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 15:15:35,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:35,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1070862303, now seen corresponding path program 1 times [2024-06-04 15:15:35,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:35,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887009672] [2024-06-04 15:15:35,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:35,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:35,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:35,887 INFO 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 15:15:35,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:35,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887009672] [2024-06-04 15:15:35,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887009672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:35,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:35,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:15:35,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631795161] [2024-06-04 15:15:35,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:35,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:15:35,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:35,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:15:35,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:15:35,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:15:35,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 96 transitions, 828 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:35,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:35,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:15:35,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:36,171 INFO L124 PetriNetUnfolderBase]: 288/517 cut-off events. [2024-06-04 15:15:36,171 INFO L125 PetriNetUnfolderBase]: For 15361/15361 co-relation queries the response was YES. [2024-06-04 15:15:36,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3104 conditions, 517 events. 288/517 cut-off events. For 15361/15361 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2007 event pairs, 48 based on Foata normal form. 2/518 useless extension candidates. Maximal degree in co-relation 3050. Up to 425 conditions per place. [2024-06-04 15:15:36,175 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 87 selfloop transitions, 26 changer transitions 0/115 dead transitions. [2024-06-04 15:15:36,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 115 transitions, 1126 flow [2024-06-04 15:15:36,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:15:36,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:15:36,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-04 15:15:36,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-04 15:15:36,176 INFO L175 Difference]: Start difference. First operand has 111 places, 96 transitions, 828 flow. Second operand 9 states and 98 transitions. [2024-06-04 15:15:36,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 115 transitions, 1126 flow [2024-06-04 15:15:36,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 115 transitions, 1039 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-04 15:15:36,191 INFO L231 Difference]: Finished difference. Result has 112 places, 98 transitions, 822 flow [2024-06-04 15:15:36,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=822, PETRI_PLACES=112, PETRI_TRANSITIONS=98} [2024-06-04 15:15:36,192 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 81 predicate places. [2024-06-04 15:15:36,192 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 98 transitions, 822 flow [2024-06-04 15:15:36,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:36,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:36,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:36,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-04 15:15:36,193 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 15:15:36,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:36,193 INFO L85 PathProgramCache]: Analyzing trace with hash 813043901, now seen corresponding path program 2 times [2024-06-04 15:15:36,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:36,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137498664] [2024-06-04 15:15:36,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:36,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:36,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:36,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:15:36,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:36,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137498664] [2024-06-04 15:15:36,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137498664] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:36,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:36,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:15:36,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307370668] [2024-06-04 15:15:36,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:36,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:15:36,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:36,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:15:36,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:15:36,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:15:36,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 98 transitions, 822 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:36,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:36,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:15:36,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:37,030 INFO L124 PetriNetUnfolderBase]: 304/543 cut-off events. [2024-06-04 15:15:37,030 INFO L125 PetriNetUnfolderBase]: For 17427/17427 co-relation queries the response was YES. [2024-06-04 15:15:37,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3331 conditions, 543 events. 304/543 cut-off events. For 17427/17427 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2130 event pairs, 51 based on Foata normal form. 2/544 useless extension candidates. Maximal degree in co-relation 3276. Up to 384 conditions per place. [2024-06-04 15:15:37,034 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 73 selfloop transitions, 43 changer transitions 0/118 dead transitions. [2024-06-04 15:15:37,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 118 transitions, 1210 flow [2024-06-04 15:15:37,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:15:37,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:15:37,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-04 15:15:37,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-04 15:15:37,035 INFO L175 Difference]: Start difference. First operand has 112 places, 98 transitions, 822 flow. Second operand 9 states and 101 transitions. [2024-06-04 15:15:37,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 118 transitions, 1210 flow [2024-06-04 15:15:37,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 118 transitions, 1145 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-04 15:15:37,055 INFO L231 Difference]: Finished difference. Result has 114 places, 102 transitions, 900 flow [2024-06-04 15:15:37,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=757, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=900, PETRI_PLACES=114, PETRI_TRANSITIONS=102} [2024-06-04 15:15:37,056 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 83 predicate places. [2024-06-04 15:15:37,057 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 102 transitions, 900 flow [2024-06-04 15:15:37,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:37,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:37,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:37,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-04 15:15:37,057 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 15:15:37,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:37,058 INFO L85 PathProgramCache]: Analyzing trace with hash 812859451, now seen corresponding path program 3 times [2024-06-04 15:15:37,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:37,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185784416] [2024-06-04 15:15:37,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:37,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:37,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:37,910 INFO 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 15:15:37,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:37,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185784416] [2024-06-04 15:15:37,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185784416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:37,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:37,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:15:37,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820484821] [2024-06-04 15:15:37,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:37,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:15:37,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:37,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:15:37,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:15:37,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:15:37,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 102 transitions, 900 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 15:15:37,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:37,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:15:37,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:38,195 INFO L124 PetriNetUnfolderBase]: 286/529 cut-off events. [2024-06-04 15:15:38,195 INFO L125 PetriNetUnfolderBase]: For 18975/18975 co-relation queries the response was YES. [2024-06-04 15:15:38,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3367 conditions, 529 events. 286/529 cut-off events. For 18975/18975 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2154 event pairs, 50 based on Foata normal form. 2/530 useless extension candidates. Maximal degree in co-relation 3311. Up to 398 conditions per place. [2024-06-04 15:15:38,198 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 74 selfloop transitions, 28 changer transitions 0/116 dead transitions. [2024-06-04 15:15:38,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 116 transitions, 1158 flow [2024-06-04 15:15:38,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:15:38,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:15:38,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-04 15:15:38,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37109375 [2024-06-04 15:15:38,217 INFO L175 Difference]: Start difference. First operand has 114 places, 102 transitions, 900 flow. Second operand 8 states and 95 transitions. [2024-06-04 15:15:38,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 116 transitions, 1158 flow [2024-06-04 15:15:38,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 116 transitions, 1083 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-04 15:15:38,238 INFO L231 Difference]: Finished difference. Result has 117 places, 103 transitions, 905 flow [2024-06-04 15:15:38,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=825, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=905, PETRI_PLACES=117, PETRI_TRANSITIONS=103} [2024-06-04 15:15:38,238 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 86 predicate places. [2024-06-04 15:15:38,239 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 103 transitions, 905 flow [2024-06-04 15:15:38,239 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 15:15:38,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:38,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:38,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-04 15:15:38,239 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 15:15:38,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:38,240 INFO L85 PathProgramCache]: Analyzing trace with hash 812864411, now seen corresponding path program 3 times [2024-06-04 15:15:38,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:38,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163126617] [2024-06-04 15:15:38,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:38,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:38,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:38,812 INFO 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 15:15:38,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:38,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163126617] [2024-06-04 15:15:38,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163126617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:38,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:38,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:15:38,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239282234] [2024-06-04 15:15:38,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:38,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:15:38,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:38,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:15:38,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:15:38,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:15:38,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 103 transitions, 905 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:38,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:38,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:15:38,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:39,079 INFO L124 PetriNetUnfolderBase]: 319/569 cut-off events. [2024-06-04 15:15:39,079 INFO L125 PetriNetUnfolderBase]: For 20447/20447 co-relation queries the response was YES. [2024-06-04 15:15:39,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3633 conditions, 569 events. 319/569 cut-off events. For 20447/20447 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2269 event pairs, 58 based on Foata normal form. 2/570 useless extension candidates. Maximal degree in co-relation 3575. Up to 404 conditions per place. [2024-06-04 15:15:39,083 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 82 selfloop transitions, 40 changer transitions 0/124 dead transitions. [2024-06-04 15:15:39,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 124 transitions, 1377 flow [2024-06-04 15:15:39,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:15:39,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:15:39,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-04 15:15:39,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-04 15:15:39,104 INFO L175 Difference]: Start difference. First operand has 117 places, 103 transitions, 905 flow. Second operand 9 states and 104 transitions. [2024-06-04 15:15:39,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 124 transitions, 1377 flow [2024-06-04 15:15:39,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 124 transitions, 1307 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-04 15:15:39,130 INFO L231 Difference]: Finished difference. Result has 120 places, 107 transitions, 968 flow [2024-06-04 15:15:39,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=968, PETRI_PLACES=120, PETRI_TRANSITIONS=107} [2024-06-04 15:15:39,131 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 89 predicate places. [2024-06-04 15:15:39,131 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 107 transitions, 968 flow [2024-06-04 15:15:39,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:39,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:39,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:39,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-04 15:15:39,132 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 15:15:39,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:39,132 INFO L85 PathProgramCache]: Analyzing trace with hash 813044149, now seen corresponding path program 1 times [2024-06-04 15:15:39,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:39,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354321250] [2024-06-04 15:15:39,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:39,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:39,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:39,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:15:39,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:39,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354321250] [2024-06-04 15:15:39,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354321250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:39,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:39,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:15:39,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436745630] [2024-06-04 15:15:39,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:39,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:15:39,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:39,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:15:39,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:15:39,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:15:39,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 107 transitions, 968 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:39,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:39,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:15:39,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:40,008 INFO L124 PetriNetUnfolderBase]: 322/574 cut-off events. [2024-06-04 15:15:40,009 INFO L125 PetriNetUnfolderBase]: For 20964/20964 co-relation queries the response was YES. [2024-06-04 15:15:40,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3702 conditions, 574 events. 322/574 cut-off events. For 20964/20964 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2312 event pairs, 58 based on Foata normal form. 1/574 useless extension candidates. Maximal degree in co-relation 3643. Up to 537 conditions per place. [2024-06-04 15:15:40,014 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 103 selfloop transitions, 16 changer transitions 0/121 dead transitions. [2024-06-04 15:15:40,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 121 transitions, 1260 flow [2024-06-04 15:15:40,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:15:40,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:15:40,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-06-04 15:15:40,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3159722222222222 [2024-06-04 15:15:40,015 INFO L175 Difference]: Start difference. First operand has 120 places, 107 transitions, 968 flow. Second operand 9 states and 91 transitions. [2024-06-04 15:15:40,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 121 transitions, 1260 flow [2024-06-04 15:15:40,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 121 transitions, 1197 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-04 15:15:40,038 INFO L231 Difference]: Finished difference. Result has 124 places, 109 transitions, 966 flow [2024-06-04 15:15:40,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=966, PETRI_PLACES=124, PETRI_TRANSITIONS=109} [2024-06-04 15:15:40,039 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 93 predicate places. [2024-06-04 15:15:40,039 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 109 transitions, 966 flow [2024-06-04 15:15:40,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:40,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:40,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:40,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-04 15:15:40,039 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 15:15:40,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:40,040 INFO L85 PathProgramCache]: Analyzing trace with hash -955398153, now seen corresponding path program 4 times [2024-06-04 15:15:40,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:40,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835996161] [2024-06-04 15:15:40,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:40,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:40,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:40,665 INFO 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 15:15:40,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:40,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835996161] [2024-06-04 15:15:40,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835996161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:40,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:40,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:15:40,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973823919] [2024-06-04 15:15:40,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:40,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:15:40,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:40,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:15:40,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:15:40,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:15:40,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 109 transitions, 966 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:40,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:40,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:15:40,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:40,952 INFO L124 PetriNetUnfolderBase]: 318/568 cut-off events. [2024-06-04 15:15:40,952 INFO L125 PetriNetUnfolderBase]: For 21165/21165 co-relation queries the response was YES. [2024-06-04 15:15:40,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3604 conditions, 568 events. 318/568 cut-off events. For 21165/21165 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2266 event pairs, 50 based on Foata normal form. 2/569 useless extension candidates. Maximal degree in co-relation 3544. Up to 406 conditions per place. [2024-06-04 15:15:40,956 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 79 selfloop transitions, 44 changer transitions 0/125 dead transitions. [2024-06-04 15:15:40,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 125 transitions, 1328 flow [2024-06-04 15:15:40,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:15:40,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:15:40,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-04 15:15:40,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-04 15:15:40,958 INFO L175 Difference]: Start difference. First operand has 124 places, 109 transitions, 966 flow. Second operand 9 states and 102 transitions. [2024-06-04 15:15:40,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 125 transitions, 1328 flow [2024-06-04 15:15:40,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 125 transitions, 1269 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-04 15:15:40,990 INFO L231 Difference]: Finished difference. Result has 126 places, 109 transitions, 1000 flow [2024-06-04 15:15:40,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=907, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1000, PETRI_PLACES=126, PETRI_TRANSITIONS=109} [2024-06-04 15:15:40,990 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 95 predicate places. [2024-06-04 15:15:40,990 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 109 transitions, 1000 flow [2024-06-04 15:15:40,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:40,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:40,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:40,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-04 15:15:40,991 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 15:15:40,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:40,991 INFO L85 PathProgramCache]: Analyzing trace with hash 900395469, now seen corresponding path program 5 times [2024-06-04 15:15:40,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:40,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930648129] [2024-06-04 15:15:40,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:40,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:40,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:41,646 INFO 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 15:15:41,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:41,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930648129] [2024-06-04 15:15:41,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930648129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:41,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:41,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:15:41,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164693698] [2024-06-04 15:15:41,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:41,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:15:41,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:41,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:15:41,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:15:41,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:15:41,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 109 transitions, 1000 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:41,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:41,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:15:41,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:41,870 INFO L124 PetriNetUnfolderBase]: 334/595 cut-off events. [2024-06-04 15:15:41,870 INFO L125 PetriNetUnfolderBase]: For 24088/24094 co-relation queries the response was YES. [2024-06-04 15:15:41,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3895 conditions, 595 events. 334/595 cut-off events. For 24088/24094 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2410 event pairs, 67 based on Foata normal form. 2/592 useless extension candidates. Maximal degree in co-relation 3834. Up to 343 conditions per place. [2024-06-04 15:15:41,875 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 73 selfloop transitions, 57 changer transitions 0/132 dead transitions. [2024-06-04 15:15:41,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 132 transitions, 1608 flow [2024-06-04 15:15:41,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:15:41,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:15:41,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-04 15:15:41,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 15:15:41,876 INFO L175 Difference]: Start difference. First operand has 126 places, 109 transitions, 1000 flow. Second operand 9 states and 108 transitions. [2024-06-04 15:15:41,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 132 transitions, 1608 flow [2024-06-04 15:15:41,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 132 transitions, 1531 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-04 15:15:41,905 INFO L231 Difference]: Finished difference. Result has 128 places, 115 transitions, 1130 flow [2024-06-04 15:15:41,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=923, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1130, PETRI_PLACES=128, PETRI_TRANSITIONS=115} [2024-06-04 15:15:41,905 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 97 predicate places. [2024-06-04 15:15:41,905 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 115 transitions, 1130 flow [2024-06-04 15:15:41,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:41,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:41,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:41,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-04 15:15:41,906 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 15:15:41,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:41,906 INFO L85 PathProgramCache]: Analyzing trace with hash 900395717, now seen corresponding path program 2 times [2024-06-04 15:15:41,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:41,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603699625] [2024-06-04 15:15:41,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:41,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:41,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:42,587 INFO 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 15:15:42,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:42,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603699625] [2024-06-04 15:15:42,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603699625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:42,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:42,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:15:42,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774545777] [2024-06-04 15:15:42,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:42,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:15:42,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:42,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:15:42,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:15:42,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:15:42,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 115 transitions, 1130 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:42,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:42,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:15:42,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:42,765 INFO L124 PetriNetUnfolderBase]: 337/600 cut-off events. [2024-06-04 15:15:42,766 INFO L125 PetriNetUnfolderBase]: For 24848/24854 co-relation queries the response was YES. [2024-06-04 15:15:42,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4032 conditions, 600 events. 337/600 cut-off events. For 24848/24854 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2450 event pairs, 63 based on Foata normal form. 5/602 useless extension candidates. Maximal degree in co-relation 3970. Up to 521 conditions per place. [2024-06-04 15:15:42,769 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 98 selfloop transitions, 30 changer transitions 0/130 dead transitions. [2024-06-04 15:15:42,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 130 transitions, 1538 flow [2024-06-04 15:15:42,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:15:42,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:15:42,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-04 15:15:42,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-04 15:15:42,771 INFO L175 Difference]: Start difference. First operand has 128 places, 115 transitions, 1130 flow. Second operand 9 states and 97 transitions. [2024-06-04 15:15:42,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 130 transitions, 1538 flow [2024-06-04 15:15:42,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 130 transitions, 1416 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-04 15:15:42,797 INFO L231 Difference]: Finished difference. Result has 132 places, 119 transitions, 1125 flow [2024-06-04 15:15:42,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1008, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1125, PETRI_PLACES=132, PETRI_TRANSITIONS=119} [2024-06-04 15:15:42,797 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 101 predicate places. [2024-06-04 15:15:42,798 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 119 transitions, 1125 flow [2024-06-04 15:15:42,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:42,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:42,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:42,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-04 15:15:42,798 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 15:15:42,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:42,799 INFO L85 PathProgramCache]: Analyzing trace with hash -762263729, now seen corresponding path program 6 times [2024-06-04 15:15:42,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:42,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740946747] [2024-06-04 15:15:42,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:42,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:42,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:43,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:15:43,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:43,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740946747] [2024-06-04 15:15:43,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740946747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:43,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:43,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:15:43,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459322768] [2024-06-04 15:15:43,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:43,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:15:43,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:43,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:15:43,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:15:43,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:15:43,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 119 transitions, 1125 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:43,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:43,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:15:43,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:43,745 INFO L124 PetriNetUnfolderBase]: 343/610 cut-off events. [2024-06-04 15:15:43,745 INFO L125 PetriNetUnfolderBase]: For 26513/26519 co-relation queries the response was YES. [2024-06-04 15:15:43,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4039 conditions, 610 events. 343/610 cut-off events. For 26513/26519 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2500 event pairs, 67 based on Foata normal form. 2/607 useless extension candidates. Maximal degree in co-relation 3976. Up to 354 conditions per place. [2024-06-04 15:15:43,749 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 78 selfloop transitions, 58 changer transitions 0/138 dead transitions. [2024-06-04 15:15:43,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 138 transitions, 1697 flow [2024-06-04 15:15:43,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:15:43,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:15:43,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-04 15:15:43,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3784722222222222 [2024-06-04 15:15:43,751 INFO L175 Difference]: Start difference. First operand has 132 places, 119 transitions, 1125 flow. Second operand 9 states and 109 transitions. [2024-06-04 15:15:43,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 138 transitions, 1697 flow [2024-06-04 15:15:43,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 138 transitions, 1650 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-04 15:15:43,779 INFO L231 Difference]: Finished difference. Result has 136 places, 121 transitions, 1223 flow [2024-06-04 15:15:43,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1078, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1223, PETRI_PLACES=136, PETRI_TRANSITIONS=121} [2024-06-04 15:15:43,780 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 105 predicate places. [2024-06-04 15:15:43,780 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 121 transitions, 1223 flow [2024-06-04 15:15:43,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:43,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:43,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:43,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-04 15:15:43,780 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 15:15:43,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:43,781 INFO L85 PathProgramCache]: Analyzing trace with hash -762441669, now seen corresponding path program 4 times [2024-06-04 15:15:43,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:43,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103877255] [2024-06-04 15:15:43,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:43,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:44,644 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 15:15:44,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:44,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103877255] [2024-06-04 15:15:44,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103877255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:44,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:44,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:15:44,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134020436] [2024-06-04 15:15:44,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:44,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:15:44,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:44,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:15:44,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:15:44,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:15:44,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 121 transitions, 1223 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 15:15:44,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:44,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:15:44,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:44,889 INFO L124 PetriNetUnfolderBase]: 309/570 cut-off events. [2024-06-04 15:15:44,889 INFO L125 PetriNetUnfolderBase]: For 26933/26943 co-relation queries the response was YES. [2024-06-04 15:15:44,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3955 conditions, 570 events. 309/570 cut-off events. For 26933/26943 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2425 event pairs, 55 based on Foata normal form. 2/563 useless extension candidates. Maximal degree in co-relation 3890. Up to 426 conditions per place. [2024-06-04 15:15:44,892 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 86 selfloop transitions, 32 changer transitions 0/132 dead transitions. [2024-06-04 15:15:44,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 132 transitions, 1489 flow [2024-06-04 15:15:44,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:15:44,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:15:44,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-04 15:15:44,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-04 15:15:44,894 INFO L175 Difference]: Start difference. First operand has 136 places, 121 transitions, 1223 flow. Second operand 8 states and 94 transitions. [2024-06-04 15:15:44,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 132 transitions, 1489 flow [2024-06-04 15:15:44,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 132 transitions, 1368 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-04 15:15:44,926 INFO L231 Difference]: Finished difference. Result has 138 places, 121 transitions, 1170 flow [2024-06-04 15:15:44,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1102, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1170, PETRI_PLACES=138, PETRI_TRANSITIONS=121} [2024-06-04 15:15:44,927 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 107 predicate places. [2024-06-04 15:15:44,927 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 121 transitions, 1170 flow [2024-06-04 15:15:44,927 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 15:15:44,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:44,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:44,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-04 15:15:44,927 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 15:15:44,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:44,928 INFO L85 PathProgramCache]: Analyzing trace with hash -762436709, now seen corresponding path program 7 times [2024-06-04 15:15:44,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:44,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093468283] [2024-06-04 15:15:44,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:44,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:44,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:45,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:15:45,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:45,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093468283] [2024-06-04 15:15:45,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093468283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:45,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:45,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:15:45,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374373247] [2024-06-04 15:15:45,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:45,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:15:45,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:45,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:15:45,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:15:45,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:15:45,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 121 transitions, 1170 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:45,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:45,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:15:45,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:45,778 INFO L124 PetriNetUnfolderBase]: 336/599 cut-off events. [2024-06-04 15:15:45,778 INFO L125 PetriNetUnfolderBase]: For 26086/26092 co-relation queries the response was YES. [2024-06-04 15:15:45,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3936 conditions, 599 events. 336/599 cut-off events. For 26086/26092 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2457 event pairs, 68 based on Foata normal form. 2/596 useless extension candidates. Maximal degree in co-relation 3870. Up to 346 conditions per place. [2024-06-04 15:15:45,783 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 73 selfloop transitions, 61 changer transitions 0/136 dead transitions. [2024-06-04 15:15:45,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 136 transitions, 1640 flow [2024-06-04 15:15:45,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:15:45,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:15:45,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-04 15:15:45,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-04 15:15:45,784 INFO L175 Difference]: Start difference. First operand has 138 places, 121 transitions, 1170 flow. Second operand 9 states and 105 transitions. [2024-06-04 15:15:45,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 136 transitions, 1640 flow [2024-06-04 15:15:45,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 136 transitions, 1523 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-04 15:15:45,820 INFO L231 Difference]: Finished difference. Result has 140 places, 121 transitions, 1180 flow [2024-06-04 15:15:45,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1053, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1180, PETRI_PLACES=140, PETRI_TRANSITIONS=121} [2024-06-04 15:15:45,821 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 109 predicate places. [2024-06-04 15:15:45,822 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 121 transitions, 1180 flow [2024-06-04 15:15:45,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:45,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:45,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:45,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-04 15:15:45,828 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 15:15:45,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:45,830 INFO L85 PathProgramCache]: Analyzing trace with hash -534356069, now seen corresponding path program 8 times [2024-06-04 15:15:45,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:45,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776977110] [2024-06-04 15:15:45,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:45,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:45,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:46,494 INFO 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 15:15:46,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:46,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776977110] [2024-06-04 15:15:46,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776977110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:46,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:46,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:15:46,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494760176] [2024-06-04 15:15:46,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:46,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:15:46,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:46,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:15:46,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:15:46,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:15:46,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 121 transitions, 1180 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:46,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:46,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:15:46,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:46,721 INFO L124 PetriNetUnfolderBase]: 352/625 cut-off events. [2024-06-04 15:15:46,722 INFO L125 PetriNetUnfolderBase]: For 29041/29047 co-relation queries the response was YES. [2024-06-04 15:15:46,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4200 conditions, 625 events. 352/625 cut-off events. For 29041/29047 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2559 event pairs, 60 based on Foata normal form. 2/622 useless extension candidates. Maximal degree in co-relation 4133. Up to 361 conditions per place. [2024-06-04 15:15:46,726 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 72 selfloop transitions, 68 changer transitions 0/142 dead transitions. [2024-06-04 15:15:46,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 142 transitions, 1814 flow [2024-06-04 15:15:46,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:15:46,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:15:46,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-04 15:15:46,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2024-06-04 15:15:46,727 INFO L175 Difference]: Start difference. First operand has 140 places, 121 transitions, 1180 flow. Second operand 9 states and 107 transitions. [2024-06-04 15:15:46,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 142 transitions, 1814 flow [2024-06-04 15:15:46,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 142 transitions, 1664 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-04 15:15:46,763 INFO L231 Difference]: Finished difference. Result has 140 places, 125 transitions, 1231 flow [2024-06-04 15:15:46,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1038, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1231, PETRI_PLACES=140, PETRI_TRANSITIONS=125} [2024-06-04 15:15:46,764 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 109 predicate places. [2024-06-04 15:15:46,764 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 125 transitions, 1231 flow [2024-06-04 15:15:46,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:46,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:46,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:46,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-04 15:15:46,765 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 15:15:46,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:46,765 INFO L85 PathProgramCache]: Analyzing trace with hash -534355821, now seen corresponding path program 3 times [2024-06-04 15:15:46,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:46,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354192451] [2024-06-04 15:15:46,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:46,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:46,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:47,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:15:47,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:47,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354192451] [2024-06-04 15:15:47,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354192451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:47,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:47,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:15:47,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324187885] [2024-06-04 15:15:47,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:47,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:15:47,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:47,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:15:47,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:15:47,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:15:47,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 125 transitions, 1231 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:47,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:47,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:15:47,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:47,746 INFO L124 PetriNetUnfolderBase]: 355/630 cut-off events. [2024-06-04 15:15:47,746 INFO L125 PetriNetUnfolderBase]: For 29521/29527 co-relation queries the response was YES. [2024-06-04 15:15:47,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4210 conditions, 630 events. 355/630 cut-off events. For 29521/29527 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2613 event pairs, 66 based on Foata normal form. 5/632 useless extension candidates. Maximal degree in co-relation 4143. Up to 550 conditions per place. [2024-06-04 15:15:47,750 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 103 selfloop transitions, 33 changer transitions 0/138 dead transitions. [2024-06-04 15:15:47,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 138 transitions, 1645 flow [2024-06-04 15:15:47,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:15:47,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:15:47,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-04 15:15:47,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 15:15:47,752 INFO L175 Difference]: Start difference. First operand has 140 places, 125 transitions, 1231 flow. Second operand 9 states and 96 transitions. [2024-06-04 15:15:47,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 138 transitions, 1645 flow [2024-06-04 15:15:47,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 138 transitions, 1493 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-04 15:15:47,792 INFO L231 Difference]: Finished difference. Result has 143 places, 127 transitions, 1178 flow [2024-06-04 15:15:47,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1079, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1178, PETRI_PLACES=143, PETRI_TRANSITIONS=127} [2024-06-04 15:15:47,792 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 112 predicate places. [2024-06-04 15:15:47,792 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 127 transitions, 1178 flow [2024-06-04 15:15:47,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:47,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:47,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:47,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-04 15:15:47,793 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 15:15:47,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:47,793 INFO L85 PathProgramCache]: Analyzing trace with hash -534362579, now seen corresponding path program 9 times [2024-06-04 15:15:47,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:47,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043662877] [2024-06-04 15:15:47,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:47,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:47,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:48,432 INFO 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 15:15:48,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:48,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043662877] [2024-06-04 15:15:48,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043662877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:48,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:48,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:15:48,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598025137] [2024-06-04 15:15:48,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:48,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:15:48,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:48,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:15:48,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:15:48,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:15:48,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 127 transitions, 1178 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:48,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:48,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:15:48,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:48,678 INFO L124 PetriNetUnfolderBase]: 351/624 cut-off events. [2024-06-04 15:15:48,678 INFO L125 PetriNetUnfolderBase]: For 29609/29615 co-relation queries the response was YES. [2024-06-04 15:15:48,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4011 conditions, 624 events. 351/624 cut-off events. For 29609/29615 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2582 event pairs, 60 based on Foata normal form. 2/621 useless extension candidates. Maximal degree in co-relation 3943. Up to 363 conditions per place. [2024-06-04 15:15:48,681 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 71 selfloop transitions, 69 changer transitions 0/142 dead transitions. [2024-06-04 15:15:48,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 142 transitions, 1672 flow [2024-06-04 15:15:48,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:15:48,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:15:48,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-04 15:15:48,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-04 15:15:48,683 INFO L175 Difference]: Start difference. First operand has 143 places, 127 transitions, 1178 flow. Second operand 9 states and 104 transitions. [2024-06-04 15:15:48,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 142 transitions, 1672 flow [2024-06-04 15:15:48,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 142 transitions, 1570 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-04 15:15:48,734 INFO L231 Difference]: Finished difference. Result has 145 places, 127 transitions, 1219 flow [2024-06-04 15:15:48,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1076, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1219, PETRI_PLACES=145, PETRI_TRANSITIONS=127} [2024-06-04 15:15:48,734 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 114 predicate places. [2024-06-04 15:15:48,735 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 127 transitions, 1219 flow [2024-06-04 15:15:48,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:48,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:48,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:48,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-04 15:15:48,735 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 15:15:48,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:48,736 INFO L85 PathProgramCache]: Analyzing trace with hash -534125429, now seen corresponding path program 10 times [2024-06-04 15:15:48,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:48,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066884830] [2024-06-04 15:15:48,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:48,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:48,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:49,378 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 15:15:49,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:49,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066884830] [2024-06-04 15:15:49,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066884830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:49,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:49,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:15:49,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315719972] [2024-06-04 15:15:49,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:49,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:15:49,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:49,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:15:49,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:15:49,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:15:49,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 127 transitions, 1219 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:49,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:49,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:15:49,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:49,588 INFO L124 PetriNetUnfolderBase]: 347/618 cut-off events. [2024-06-04 15:15:49,588 INFO L125 PetriNetUnfolderBase]: For 29135/29141 co-relation queries the response was YES. [2024-06-04 15:15:49,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3998 conditions, 618 events. 347/618 cut-off events. For 29135/29141 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2550 event pairs, 55 based on Foata normal form. 2/615 useless extension candidates. Maximal degree in co-relation 3929. Up to 360 conditions per place. [2024-06-04 15:15:49,592 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 63 selfloop transitions, 76 changer transitions 0/141 dead transitions. [2024-06-04 15:15:49,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 141 transitions, 1625 flow [2024-06-04 15:15:49,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:15:49,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:15:49,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-04 15:15:49,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-04 15:15:49,593 INFO L175 Difference]: Start difference. First operand has 145 places, 127 transitions, 1219 flow. Second operand 9 states and 102 transitions. [2024-06-04 15:15:49,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 141 transitions, 1625 flow [2024-06-04 15:15:49,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 141 transitions, 1459 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-04 15:15:49,633 INFO L231 Difference]: Finished difference. Result has 146 places, 127 transitions, 1210 flow [2024-06-04 15:15:49,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1053, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1210, PETRI_PLACES=146, PETRI_TRANSITIONS=127} [2024-06-04 15:15:49,633 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 115 predicate places. [2024-06-04 15:15:49,633 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 127 transitions, 1210 flow [2024-06-04 15:15:49,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:49,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:49,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:49,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-04 15:15:49,634 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 15:15:49,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:49,634 INFO L85 PathProgramCache]: Analyzing trace with hash -526081611, now seen corresponding path program 4 times [2024-06-04 15:15:49,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:49,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64003349] [2024-06-04 15:15:49,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:49,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:49,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:50,220 INFO 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 15:15:50,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:50,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64003349] [2024-06-04 15:15:50,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64003349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:50,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:50,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:15:50,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456743771] [2024-06-04 15:15:50,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:50,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:15:50,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:50,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:15:50,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:15:50,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:15:50,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 127 transitions, 1210 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:50,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:50,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:15:50,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:50,393 INFO L124 PetriNetUnfolderBase]: 350/623 cut-off events. [2024-06-04 15:15:50,393 INFO L125 PetriNetUnfolderBase]: For 29229/29235 co-relation queries the response was YES. [2024-06-04 15:15:50,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4064 conditions, 623 events. 350/623 cut-off events. For 29229/29235 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2579 event pairs, 64 based on Foata normal form. 5/625 useless extension candidates. Maximal degree in co-relation 3994. Up to 542 conditions per place. [2024-06-04 15:15:50,397 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 101 selfloop transitions, 37 changer transitions 0/140 dead transitions. [2024-06-04 15:15:50,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 140 transitions, 1634 flow [2024-06-04 15:15:50,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:15:50,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:15:50,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-04 15:15:50,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3298611111111111 [2024-06-04 15:15:50,398 INFO L175 Difference]: Start difference. First operand has 146 places, 127 transitions, 1210 flow. Second operand 9 states and 95 transitions. [2024-06-04 15:15:50,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 140 transitions, 1634 flow [2024-06-04 15:15:50,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 140 transitions, 1466 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-04 15:15:50,438 INFO L231 Difference]: Finished difference. Result has 146 places, 129 transitions, 1149 flow [2024-06-04 15:15:50,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1042, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1149, PETRI_PLACES=146, PETRI_TRANSITIONS=129} [2024-06-04 15:15:50,439 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 115 predicate places. [2024-06-04 15:15:50,439 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 129 transitions, 1149 flow [2024-06-04 15:15:50,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:50,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:50,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:50,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-04 15:15:50,440 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 15:15:50,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:50,441 INFO L85 PathProgramCache]: Analyzing trace with hash -534116811, now seen corresponding path program 5 times [2024-06-04 15:15:50,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:50,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192204546] [2024-06-04 15:15:50,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:50,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:50,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:51,047 INFO 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 15:15:51,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:51,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192204546] [2024-06-04 15:15:51,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192204546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:51,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:51,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:15:51,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087510340] [2024-06-04 15:15:51,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:51,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:15:51,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:51,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:15:51,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:15:51,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:15:51,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 129 transitions, 1149 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:51,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:51,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:15:51,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:51,291 INFO L124 PetriNetUnfolderBase]: 348/619 cut-off events. [2024-06-04 15:15:51,292 INFO L125 PetriNetUnfolderBase]: For 29145/29145 co-relation queries the response was YES. [2024-06-04 15:15:51,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3900 conditions, 619 events. 348/619 cut-off events. For 29145/29145 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2564 event pairs, 68 based on Foata normal form. 1/619 useless extension candidates. Maximal degree in co-relation 3829. Up to 592 conditions per place. [2024-06-04 15:15:51,296 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 122 selfloop transitions, 14 changer transitions 0/138 dead transitions. [2024-06-04 15:15:51,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 138 transitions, 1443 flow [2024-06-04 15:15:51,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:15:51,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:15:51,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-06-04 15:15:51,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3055555555555556 [2024-06-04 15:15:51,297 INFO L175 Difference]: Start difference. First operand has 146 places, 129 transitions, 1149 flow. Second operand 9 states and 88 transitions. [2024-06-04 15:15:51,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 138 transitions, 1443 flow [2024-06-04 15:15:51,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 138 transitions, 1330 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-04 15:15:51,341 INFO L231 Difference]: Finished difference. Result has 148 places, 129 transitions, 1069 flow [2024-06-04 15:15:51,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1036, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1069, PETRI_PLACES=148, PETRI_TRANSITIONS=129} [2024-06-04 15:15:51,341 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 117 predicate places. [2024-06-04 15:15:51,341 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 129 transitions, 1069 flow [2024-06-04 15:15:51,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:51,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:51,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:51,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-04 15:15:51,342 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 15:15:51,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:51,342 INFO L85 PathProgramCache]: Analyzing trace with hash -525774029, now seen corresponding path program 1 times [2024-06-04 15:15:51,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:51,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520086999] [2024-06-04 15:15:51,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:51,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:51,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:52,167 INFO 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 15:15:52,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:52,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520086999] [2024-06-04 15:15:52,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520086999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:52,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:52,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:15:52,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188545044] [2024-06-04 15:15:52,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:52,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:15:52,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:52,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:15:52,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:15:52,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:15:52,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 129 transitions, 1069 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:52,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:52,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:15:52,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:52,431 INFO L124 PetriNetUnfolderBase]: 345/614 cut-off events. [2024-06-04 15:15:52,431 INFO L125 PetriNetUnfolderBase]: For 29183/29183 co-relation queries the response was YES. [2024-06-04 15:15:52,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3732 conditions, 614 events. 345/614 cut-off events. For 29183/29183 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2521 event pairs, 67 based on Foata normal form. 2/615 useless extension candidates. Maximal degree in co-relation 3660. Up to 581 conditions per place. [2024-06-04 15:15:52,435 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 123 selfloop transitions, 15 changer transitions 0/140 dead transitions. [2024-06-04 15:15:52,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 140 transitions, 1371 flow [2024-06-04 15:15:52,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:15:52,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:15:52,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 95 transitions. [2024-06-04 15:15:52,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.296875 [2024-06-04 15:15:52,436 INFO L175 Difference]: Start difference. First operand has 148 places, 129 transitions, 1069 flow. Second operand 10 states and 95 transitions. [2024-06-04 15:15:52,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 140 transitions, 1371 flow [2024-06-04 15:15:52,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 140 transitions, 1338 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-04 15:15:52,484 INFO L231 Difference]: Finished difference. Result has 150 places, 129 transitions, 1070 flow [2024-06-04 15:15:52,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1036, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1070, PETRI_PLACES=150, PETRI_TRANSITIONS=129} [2024-06-04 15:15:52,484 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 119 predicate places. [2024-06-04 15:15:52,485 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 129 transitions, 1070 flow [2024-06-04 15:15:52,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:52,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:52,485 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 15:15:52,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-04 15:15:52,485 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 15:15:52,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:52,486 INFO L85 PathProgramCache]: Analyzing trace with hash 61215939, now seen corresponding path program 1 times [2024-06-04 15:15:52,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:52,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628388200] [2024-06-04 15:15:52,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:52,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:52,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:53,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:15:53,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:53,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628388200] [2024-06-04 15:15:53,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628388200] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:53,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:53,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:15:53,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617782988] [2024-06-04 15:15:53,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:53,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:15:53,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:53,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:15:53,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:15:53,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:15:53,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 129 transitions, 1070 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:53,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:53,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:15:53,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:53,560 INFO L124 PetriNetUnfolderBase]: 349/622 cut-off events. [2024-06-04 15:15:53,560 INFO L125 PetriNetUnfolderBase]: For 30372/30372 co-relation queries the response was YES. [2024-06-04 15:15:53,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3797 conditions, 622 events. 349/622 cut-off events. For 30372/30372 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2582 event pairs, 41 based on Foata normal form. 2/623 useless extension candidates. Maximal degree in co-relation 3724. Up to 524 conditions per place. [2024-06-04 15:15:53,563 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 125 selfloop transitions, 20 changer transitions 0/147 dead transitions. [2024-06-04 15:15:53,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 147 transitions, 1418 flow [2024-06-04 15:15:53,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:15:53,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:15:53,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-04 15:15:53,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3263888888888889 [2024-06-04 15:15:53,565 INFO L175 Difference]: Start difference. First operand has 150 places, 129 transitions, 1070 flow. Second operand 9 states and 94 transitions. [2024-06-04 15:15:53,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 147 transitions, 1418 flow [2024-06-04 15:15:53,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 147 transitions, 1380 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-04 15:15:53,615 INFO L231 Difference]: Finished difference. Result has 151 places, 130 transitions, 1090 flow [2024-06-04 15:15:53,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1032, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1090, PETRI_PLACES=151, PETRI_TRANSITIONS=130} [2024-06-04 15:15:53,616 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 120 predicate places. [2024-06-04 15:15:53,616 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 130 transitions, 1090 flow [2024-06-04 15:15:53,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:53,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:53,616 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 15:15:53,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-04 15:15:53,617 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 15:15:53,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:53,617 INFO L85 PathProgramCache]: Analyzing trace with hash 63089889, now seen corresponding path program 2 times [2024-06-04 15:15:53,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:53,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198756169] [2024-06-04 15:15:53,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:53,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:53,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:54,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:15:54,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:54,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198756169] [2024-06-04 15:15:54,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198756169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:54,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:54,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:15:54,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51745098] [2024-06-04 15:15:54,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:54,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:15:54,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:54,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:15:54,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:15:54,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:15:54,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 130 transitions, 1090 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:54,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:54,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:15:54,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:54,712 INFO L124 PetriNetUnfolderBase]: 360/643 cut-off events. [2024-06-04 15:15:54,713 INFO L125 PetriNetUnfolderBase]: For 34084/34084 co-relation queries the response was YES. [2024-06-04 15:15:54,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4037 conditions, 643 events. 360/643 cut-off events. For 34084/34084 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2719 event pairs, 57 based on Foata normal form. 2/644 useless extension candidates. Maximal degree in co-relation 3963. Up to 515 conditions per place. [2024-06-04 15:15:54,716 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 120 selfloop transitions, 28 changer transitions 0/150 dead transitions. [2024-06-04 15:15:54,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 150 transitions, 1562 flow [2024-06-04 15:15:54,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:15:54,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:15:54,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-04 15:15:54,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 15:15:54,717 INFO L175 Difference]: Start difference. First operand has 151 places, 130 transitions, 1090 flow. Second operand 9 states and 99 transitions. [2024-06-04 15:15:54,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 150 transitions, 1562 flow [2024-06-04 15:15:54,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 150 transitions, 1514 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-04 15:15:54,774 INFO L231 Difference]: Finished difference. Result has 153 places, 132 transitions, 1132 flow [2024-06-04 15:15:54,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1042, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1132, PETRI_PLACES=153, PETRI_TRANSITIONS=132} [2024-06-04 15:15:54,775 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 122 predicate places. [2024-06-04 15:15:54,775 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 132 transitions, 1132 flow [2024-06-04 15:15:54,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:54,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:54,775 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 15:15:54,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-04 15:15:54,776 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 15:15:54,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:54,776 INFO L85 PathProgramCache]: Analyzing trace with hash 63093609, now seen corresponding path program 3 times [2024-06-04 15:15:54,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:54,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266425989] [2024-06-04 15:15:54,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:54,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:54,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:55,538 INFO 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 15:15:55,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:55,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266425989] [2024-06-04 15:15:55,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266425989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:55,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:55,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:15:55,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268722147] [2024-06-04 15:15:55,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:55,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:15:55,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:55,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:15:55,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:15:55,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:15:55,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 132 transitions, 1132 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:55,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:55,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:15:55,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:55,876 INFO L124 PetriNetUnfolderBase]: 357/638 cut-off events. [2024-06-04 15:15:55,876 INFO L125 PetriNetUnfolderBase]: For 33322/33322 co-relation queries the response was YES. [2024-06-04 15:15:55,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3954 conditions, 638 events. 357/638 cut-off events. For 33322/33322 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2684 event pairs, 56 based on Foata normal form. 2/639 useless extension candidates. Maximal degree in co-relation 3879. Up to 533 conditions per place. [2024-06-04 15:15:55,880 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 117 selfloop transitions, 30 changer transitions 0/149 dead transitions. [2024-06-04 15:15:55,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 149 transitions, 1476 flow [2024-06-04 15:15:55,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:15:55,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:15:55,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-04 15:15:55,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-04 15:15:55,881 INFO L175 Difference]: Start difference. First operand has 153 places, 132 transitions, 1132 flow. Second operand 9 states and 97 transitions. [2024-06-04 15:15:55,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 149 transitions, 1476 flow [2024-06-04 15:15:55,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 149 transitions, 1417 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-04 15:15:55,946 INFO L231 Difference]: Finished difference. Result has 157 places, 132 transitions, 1138 flow [2024-06-04 15:15:55,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1073, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1138, PETRI_PLACES=157, PETRI_TRANSITIONS=132} [2024-06-04 15:15:55,947 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 126 predicate places. [2024-06-04 15:15:55,947 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 132 transitions, 1138 flow [2024-06-04 15:15:55,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:55,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:55,947 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 15:15:55,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-04 15:15:55,948 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 15:15:55,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:55,948 INFO L85 PathProgramCache]: Analyzing trace with hash -558444856, now seen corresponding path program 1 times [2024-06-04 15:15:55,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:55,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328389070] [2024-06-04 15:15:55,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:55,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:55,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:56,647 INFO 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 15:15:56,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:56,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328389070] [2024-06-04 15:15:56,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328389070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:56,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:56,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:15:56,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246059999] [2024-06-04 15:15:56,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:56,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:15:56,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:56,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:15:56,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:15:56,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:15:56,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 132 transitions, 1138 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:56,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:56,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:15:56,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:56,888 INFO L124 PetriNetUnfolderBase]: 355/635 cut-off events. [2024-06-04 15:15:56,888 INFO L125 PetriNetUnfolderBase]: For 31933/31933 co-relation queries the response was YES. [2024-06-04 15:15:56,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3920 conditions, 635 events. 355/635 cut-off events. For 31933/31933 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2676 event pairs, 55 based on Foata normal form. 1/635 useless extension candidates. Maximal degree in co-relation 3843. Up to 527 conditions per place. [2024-06-04 15:15:56,892 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 114 selfloop transitions, 33 changer transitions 0/149 dead transitions. [2024-06-04 15:15:56,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 149 transitions, 1484 flow [2024-06-04 15:15:56,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:15:56,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:15:56,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-04 15:15:56,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-04 15:15:56,893 INFO L175 Difference]: Start difference. First operand has 157 places, 132 transitions, 1138 flow. Second operand 9 states and 98 transitions. [2024-06-04 15:15:56,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 149 transitions, 1484 flow [2024-06-04 15:15:56,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 149 transitions, 1411 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-04 15:15:56,955 INFO L231 Difference]: Finished difference. Result has 158 places, 132 transitions, 1139 flow [2024-06-04 15:15:56,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1065, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1139, PETRI_PLACES=158, PETRI_TRANSITIONS=132} [2024-06-04 15:15:56,955 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 127 predicate places. [2024-06-04 15:15:56,955 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 132 transitions, 1139 flow [2024-06-04 15:15:56,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:56,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:56,956 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 15:15:56,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-04 15:15:56,956 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 15:15:56,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:56,956 INFO L85 PathProgramCache]: Analyzing trace with hash -554719989, now seen corresponding path program 1 times [2024-06-04 15:15:56,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:56,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962300527] [2024-06-04 15:15:56,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:56,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:56,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:57,586 INFO 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 15:15:57,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:57,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962300527] [2024-06-04 15:15:57,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962300527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:57,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:57,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:15:57,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018923941] [2024-06-04 15:15:57,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:57,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:15:57,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:57,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:15:57,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:15:57,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:15:57,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 132 transitions, 1139 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:57,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:57,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:15:57,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:57,846 INFO L124 PetriNetUnfolderBase]: 361/645 cut-off events. [2024-06-04 15:15:57,846 INFO L125 PetriNetUnfolderBase]: For 34407/34407 co-relation queries the response was YES. [2024-06-04 15:15:57,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3992 conditions, 645 events. 361/645 cut-off events. For 34407/34407 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2730 event pairs, 53 based on Foata normal form. 2/646 useless extension candidates. Maximal degree in co-relation 3914. Up to 545 conditions per place. [2024-06-04 15:15:57,851 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 123 selfloop transitions, 28 changer transitions 0/153 dead transitions. [2024-06-04 15:15:57,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 153 transitions, 1523 flow [2024-06-04 15:15:57,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:15:57,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:15:57,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-04 15:15:57,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-04 15:15:57,852 INFO L175 Difference]: Start difference. First operand has 158 places, 132 transitions, 1139 flow. Second operand 10 states and 107 transitions. [2024-06-04 15:15:57,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 153 transitions, 1523 flow [2024-06-04 15:15:57,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 153 transitions, 1404 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 15:15:57,937 INFO L231 Difference]: Finished difference. Result has 158 places, 134 transitions, 1109 flow [2024-06-04 15:15:57,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1020, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1109, PETRI_PLACES=158, PETRI_TRANSITIONS=134} [2024-06-04 15:15:57,938 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 127 predicate places. [2024-06-04 15:15:57,938 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 134 transitions, 1109 flow [2024-06-04 15:15:57,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:57,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:57,938 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 15:15:57,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-04 15:15:57,939 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 15:15:57,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:57,939 INFO L85 PathProgramCache]: Analyzing trace with hash -410835411, now seen corresponding path program 4 times [2024-06-04 15:15:57,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:57,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710898549] [2024-06-04 15:15:57,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:57,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:57,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:58,816 INFO 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 15:15:58,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:58,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710898549] [2024-06-04 15:15:58,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710898549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:58,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:58,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:15:58,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758068952] [2024-06-04 15:15:58,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:58,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:15:58,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:58,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:15:58,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:15:58,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:15:58,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 134 transitions, 1109 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:58,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:58,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:15:58,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:59,104 INFO L124 PetriNetUnfolderBase]: 365/653 cut-off events. [2024-06-04 15:15:59,105 INFO L125 PetriNetUnfolderBase]: For 35765/35765 co-relation queries the response was YES. [2024-06-04 15:15:59,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4043 conditions, 653 events. 365/653 cut-off events. For 35765/35765 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2774 event pairs, 52 based on Foata normal form. 2/654 useless extension candidates. Maximal degree in co-relation 3964. Up to 522 conditions per place. [2024-06-04 15:15:59,109 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 111 selfloop transitions, 37 changer transitions 0/150 dead transitions. [2024-06-04 15:15:59,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 150 transitions, 1463 flow [2024-06-04 15:15:59,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:15:59,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:15:59,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-04 15:15:59,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-04 15:15:59,113 INFO L175 Difference]: Start difference. First operand has 158 places, 134 transitions, 1109 flow. Second operand 9 states and 98 transitions. [2024-06-04 15:15:59,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 150 transitions, 1463 flow [2024-06-04 15:15:59,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 150 transitions, 1390 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-04 15:15:59,198 INFO L231 Difference]: Finished difference. Result has 159 places, 135 transitions, 1132 flow [2024-06-04 15:15:59,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1036, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1132, PETRI_PLACES=159, PETRI_TRANSITIONS=135} [2024-06-04 15:15:59,199 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 128 predicate places. [2024-06-04 15:15:59,199 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 135 transitions, 1132 flow [2024-06-04 15:15:59,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:59,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:59,199 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 15:15:59,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-04 15:15:59,200 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 15:15:59,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:59,200 INFO L85 PathProgramCache]: Analyzing trace with hash -571155607, now seen corresponding path program 5 times [2024-06-04 15:15:59,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:59,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809043507] [2024-06-04 15:15:59,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:59,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:59,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:00,080 INFO 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 15:16:00,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:00,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809043507] [2024-06-04 15:16:00,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809043507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:00,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:00,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:16:00,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536749643] [2024-06-04 15:16:00,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:00,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:16:00,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:00,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:16:00,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:16:00,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:16:00,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 135 transitions, 1132 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:00,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:00,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:16:00,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:00,446 INFO L124 PetriNetUnfolderBase]: 369/661 cut-off events. [2024-06-04 15:16:00,447 INFO L125 PetriNetUnfolderBase]: For 37335/37335 co-relation queries the response was YES. [2024-06-04 15:16:00,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4112 conditions, 661 events. 369/661 cut-off events. For 37335/37335 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2834 event pairs, 56 based on Foata normal form. 2/662 useless extension candidates. Maximal degree in co-relation 4032. Up to 530 conditions per place. [2024-06-04 15:16:00,466 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 116 selfloop transitions, 33 changer transitions 0/151 dead transitions. [2024-06-04 15:16:00,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 151 transitions, 1490 flow [2024-06-04 15:16:00,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:16:00,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:16:00,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-04 15:16:00,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 15:16:00,476 INFO L175 Difference]: Start difference. First operand has 159 places, 135 transitions, 1132 flow. Second operand 9 states and 99 transitions. [2024-06-04 15:16:00,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 151 transitions, 1490 flow [2024-06-04 15:16:00,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 151 transitions, 1404 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-04 15:16:00,569 INFO L231 Difference]: Finished difference. Result has 161 places, 136 transitions, 1136 flow [2024-06-04 15:16:00,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1046, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1136, PETRI_PLACES=161, PETRI_TRANSITIONS=136} [2024-06-04 15:16:00,569 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 130 predicate places. [2024-06-04 15:16:00,570 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 136 transitions, 1136 flow [2024-06-04 15:16:00,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:00,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:00,570 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 15:16:00,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-04 15:16:00,570 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 15:16:00,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:00,571 INFO L85 PathProgramCache]: Analyzing trace with hash -571005505, now seen corresponding path program 2 times [2024-06-04 15:16:00,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:00,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424969157] [2024-06-04 15:16:00,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:00,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:01,261 INFO 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 15:16:01,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:01,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424969157] [2024-06-04 15:16:01,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424969157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:01,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:01,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:16:01,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079186737] [2024-06-04 15:16:01,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:01,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:16:01,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:01,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:16:01,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:16:01,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:16:01,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 136 transitions, 1136 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:01,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:01,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:16:01,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:01,603 INFO L124 PetriNetUnfolderBase]: 415/735 cut-off events. [2024-06-04 15:16:01,615 INFO L125 PetriNetUnfolderBase]: For 50586/50586 co-relation queries the response was YES. [2024-06-04 15:16:01,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4913 conditions, 735 events. 415/735 cut-off events. For 50586/50586 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3212 event pairs, 68 based on Foata normal form. 2/736 useless extension candidates. Maximal degree in co-relation 4832. Up to 496 conditions per place. [2024-06-04 15:16:01,621 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 117 selfloop transitions, 45 changer transitions 0/164 dead transitions. [2024-06-04 15:16:01,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 164 transitions, 1846 flow [2024-06-04 15:16:01,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:16:01,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:16:01,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-04 15:16:01,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-04 15:16:01,623 INFO L175 Difference]: Start difference. First operand has 161 places, 136 transitions, 1136 flow. Second operand 10 states and 117 transitions. [2024-06-04 15:16:01,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 164 transitions, 1846 flow [2024-06-04 15:16:01,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 164 transitions, 1766 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-04 15:16:01,733 INFO L231 Difference]: Finished difference. Result has 166 places, 144 transitions, 1302 flow [2024-06-04 15:16:01,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1056, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1302, PETRI_PLACES=166, PETRI_TRANSITIONS=144} [2024-06-04 15:16:01,735 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 135 predicate places. [2024-06-04 15:16:01,735 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 144 transitions, 1302 flow [2024-06-04 15:16:01,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:01,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:01,735 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 15:16:01,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-04 15:16:01,736 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 15:16:01,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:01,736 INFO L85 PathProgramCache]: Analyzing trace with hash -565643125, now seen corresponding path program 3 times [2024-06-04 15:16:01,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:01,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656148473] [2024-06-04 15:16:01,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:01,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:01,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:02,438 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 15:16:02,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:02,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656148473] [2024-06-04 15:16:02,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656148473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:02,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:02,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:16:02,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90997937] [2024-06-04 15:16:02,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:02,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:16:02,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:02,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:16:02,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:16:02,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:16:02,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 144 transitions, 1302 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:02,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:02,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:16:02,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:02,725 INFO L124 PetriNetUnfolderBase]: 421/745 cut-off events. [2024-06-04 15:16:02,725 INFO L125 PetriNetUnfolderBase]: For 52719/52719 co-relation queries the response was YES. [2024-06-04 15:16:02,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5175 conditions, 745 events. 421/745 cut-off events. For 52719/52719 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3265 event pairs, 57 based on Foata normal form. 2/746 useless extension candidates. Maximal degree in co-relation 5091. Up to 498 conditions per place. [2024-06-04 15:16:02,730 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 114 selfloop transitions, 50 changer transitions 0/166 dead transitions. [2024-06-04 15:16:02,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 166 transitions, 1957 flow [2024-06-04 15:16:02,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:16:02,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:16:02,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-04 15:16:02,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-04 15:16:02,731 INFO L175 Difference]: Start difference. First operand has 166 places, 144 transitions, 1302 flow. Second operand 10 states and 116 transitions. [2024-06-04 15:16:02,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 166 transitions, 1957 flow [2024-06-04 15:16:02,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 166 transitions, 1906 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-04 15:16:02,833 INFO L231 Difference]: Finished difference. Result has 171 places, 146 transitions, 1391 flow [2024-06-04 15:16:02,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1253, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1391, PETRI_PLACES=171, PETRI_TRANSITIONS=146} [2024-06-04 15:16:02,834 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 140 predicate places. [2024-06-04 15:16:02,834 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 146 transitions, 1391 flow [2024-06-04 15:16:02,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:02,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:02,834 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 15:16:02,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-04 15:16:02,835 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 15:16:02,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:02,835 INFO L85 PathProgramCache]: Analyzing trace with hash -565433596, now seen corresponding path program 1 times [2024-06-04 15:16:02,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:02,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089671473] [2024-06-04 15:16:02,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:02,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:02,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:03,661 INFO 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 15:16:03,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:03,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089671473] [2024-06-04 15:16:03,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089671473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:03,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:03,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:16:03,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646721176] [2024-06-04 15:16:03,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:03,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:16:03,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:03,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:16:03,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:16:03,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:16:03,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 146 transitions, 1391 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:03,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:03,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:16:03,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:03,959 INFO L124 PetriNetUnfolderBase]: 417/740 cut-off events. [2024-06-04 15:16:03,960 INFO L125 PetriNetUnfolderBase]: For 51270/51270 co-relation queries the response was YES. [2024-06-04 15:16:03,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5102 conditions, 740 events. 417/740 cut-off events. For 51270/51270 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3236 event pairs, 59 based on Foata normal form. 3/742 useless extension candidates. Maximal degree in co-relation 5016. Up to 506 conditions per place. [2024-06-04 15:16:03,965 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 105 selfloop transitions, 60 changer transitions 0/167 dead transitions. [2024-06-04 15:16:03,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 167 transitions, 1947 flow [2024-06-04 15:16:03,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:16:03,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:16:03,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-04 15:16:03,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-04 15:16:03,966 INFO L175 Difference]: Start difference. First operand has 171 places, 146 transitions, 1391 flow. Second operand 10 states and 112 transitions. [2024-06-04 15:16:03,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 167 transitions, 1947 flow [2024-06-04 15:16:04,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 167 transitions, 1842 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-04 15:16:04,085 INFO L231 Difference]: Finished difference. Result has 175 places, 149 transitions, 1498 flow [2024-06-04 15:16:04,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1289, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1498, PETRI_PLACES=175, PETRI_TRANSITIONS=149} [2024-06-04 15:16:04,085 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 144 predicate places. [2024-06-04 15:16:04,085 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 149 transitions, 1498 flow [2024-06-04 15:16:04,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:04,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:04,086 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 15:16:04,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-04 15:16:04,086 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 15:16:04,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:04,087 INFO L85 PathProgramCache]: Analyzing trace with hash -571159327, now seen corresponding path program 6 times [2024-06-04 15:16:04,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:04,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348189069] [2024-06-04 15:16:04,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:04,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:04,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:04,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:16:04,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:04,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348189069] [2024-06-04 15:16:04,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348189069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:04,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:04,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:16:04,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345448281] [2024-06-04 15:16:04,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:04,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:16:04,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:04,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:16:04,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:16:04,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:16:04,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 149 transitions, 1498 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:04,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:04,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:16:04,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:05,112 INFO L124 PetriNetUnfolderBase]: 421/748 cut-off events. [2024-06-04 15:16:05,112 INFO L125 PetriNetUnfolderBase]: For 51584/51584 co-relation queries the response was YES. [2024-06-04 15:16:05,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5275 conditions, 748 events. 421/748 cut-off events. For 51584/51584 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3282 event pairs, 65 based on Foata normal form. 2/749 useless extension candidates. Maximal degree in co-relation 5187. Up to 597 conditions per place. [2024-06-04 15:16:05,118 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 128 selfloop transitions, 35 changer transitions 0/165 dead transitions. [2024-06-04 15:16:05,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 165 transitions, 1884 flow [2024-06-04 15:16:05,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:16:05,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:16:05,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-04 15:16:05,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 15:16:05,119 INFO L175 Difference]: Start difference. First operand has 175 places, 149 transitions, 1498 flow. Second operand 9 states and 99 transitions. [2024-06-04 15:16:05,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 165 transitions, 1884 flow [2024-06-04 15:16:05,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 165 transitions, 1746 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-04 15:16:05,233 INFO L231 Difference]: Finished difference. Result has 177 places, 150 transitions, 1456 flow [2024-06-04 15:16:05,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1360, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1456, PETRI_PLACES=177, PETRI_TRANSITIONS=150} [2024-06-04 15:16:05,234 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 146 predicate places. [2024-06-04 15:16:05,234 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 150 transitions, 1456 flow [2024-06-04 15:16:05,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:05,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:05,235 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 15:16:05,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-04 15:16:05,235 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 15:16:05,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:05,235 INFO L85 PathProgramCache]: Analyzing trace with hash -565441315, now seen corresponding path program 4 times [2024-06-04 15:16:05,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:05,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280968549] [2024-06-04 15:16:05,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:05,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:05,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:05,764 INFO 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 15:16:05,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:05,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280968549] [2024-06-04 15:16:05,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280968549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:05,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:05,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:16:05,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746506949] [2024-06-04 15:16:05,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:05,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:16:05,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:05,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:16:05,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:16:05,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:16:05,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 150 transitions, 1456 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:05,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:05,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:16:05,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:06,035 INFO L124 PetriNetUnfolderBase]: 427/758 cut-off events. [2024-06-04 15:16:06,036 INFO L125 PetriNetUnfolderBase]: For 53697/53697 co-relation queries the response was YES. [2024-06-04 15:16:06,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5291 conditions, 758 events. 427/758 cut-off events. For 53697/53697 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3335 event pairs, 60 based on Foata normal form. 2/759 useless extension candidates. Maximal degree in co-relation 5202. Up to 507 conditions per place. [2024-06-04 15:16:06,043 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 113 selfloop transitions, 56 changer transitions 0/171 dead transitions. [2024-06-04 15:16:06,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 171 transitions, 2120 flow [2024-06-04 15:16:06,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:16:06,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:16:06,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-04 15:16:06,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-04 15:16:06,045 INFO L175 Difference]: Start difference. First operand has 177 places, 150 transitions, 1456 flow. Second operand 10 states and 115 transitions. [2024-06-04 15:16:06,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 171 transitions, 2120 flow [2024-06-04 15:16:06,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 171 transitions, 2034 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-04 15:16:06,205 INFO L231 Difference]: Finished difference. Result has 180 places, 152 transitions, 1523 flow [2024-06-04 15:16:06,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1370, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1523, PETRI_PLACES=180, PETRI_TRANSITIONS=152} [2024-06-04 15:16:06,206 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 149 predicate places. [2024-06-04 15:16:06,206 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 152 transitions, 1523 flow [2024-06-04 15:16:06,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:06,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:06,206 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 15:16:06,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-04 15:16:06,207 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 15:16:06,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:06,207 INFO L85 PathProgramCache]: Analyzing trace with hash -565433875, now seen corresponding path program 5 times [2024-06-04 15:16:06,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:06,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260249242] [2024-06-04 15:16:06,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:06,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:06,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:06,732 INFO 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 15:16:06,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:06,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260249242] [2024-06-04 15:16:06,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260249242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:06,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:06,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:16:06,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69416269] [2024-06-04 15:16:06,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:06,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:16:06,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:06,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:16:06,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:16:06,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:16:06,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 152 transitions, 1523 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:06,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:06,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:16:06,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:06,968 INFO L124 PetriNetUnfolderBase]: 418/744 cut-off events. [2024-06-04 15:16:06,969 INFO L125 PetriNetUnfolderBase]: For 51871/51871 co-relation queries the response was YES. [2024-06-04 15:16:06,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5033 conditions, 744 events. 418/744 cut-off events. For 51871/51871 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3262 event pairs, 58 based on Foata normal form. 4/747 useless extension candidates. Maximal degree in co-relation 4943. Up to 502 conditions per place. [2024-06-04 15:16:06,974 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 109 selfloop transitions, 59 changer transitions 0/170 dead transitions. [2024-06-04 15:16:06,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 170 transitions, 2031 flow [2024-06-04 15:16:06,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:16:06,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:16:06,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-04 15:16:06,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-04 15:16:06,976 INFO L175 Difference]: Start difference. First operand has 180 places, 152 transitions, 1523 flow. Second operand 10 states and 113 transitions. [2024-06-04 15:16:06,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 170 transitions, 2031 flow [2024-06-04 15:16:07,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 170 transitions, 1886 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-04 15:16:07,110 INFO L231 Difference]: Finished difference. Result has 183 places, 152 transitions, 1504 flow [2024-06-04 15:16:07,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1378, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1504, PETRI_PLACES=183, PETRI_TRANSITIONS=152} [2024-06-04 15:16:07,110 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 152 predicate places. [2024-06-04 15:16:07,110 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 152 transitions, 1504 flow [2024-06-04 15:16:07,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:07,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:07,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:16:07,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-04 15:16:07,111 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 15:16:07,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:07,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1350551373, now seen corresponding path program 7 times [2024-06-04 15:16:07,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:07,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120472393] [2024-06-04 15:16:07,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:07,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:07,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:07,955 INFO 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 15:16:07,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:07,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120472393] [2024-06-04 15:16:07,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120472393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:07,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:07,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:16:07,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676056863] [2024-06-04 15:16:07,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:07,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:16:07,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:07,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:16:07,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:16:08,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:16:08,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 152 transitions, 1504 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:08,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:08,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:16:08,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:08,272 INFO L124 PetriNetUnfolderBase]: 422/753 cut-off events. [2024-06-04 15:16:08,272 INFO L125 PetriNetUnfolderBase]: For 49852/49858 co-relation queries the response was YES. [2024-06-04 15:16:08,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5097 conditions, 753 events. 422/753 cut-off events. For 49852/49858 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3325 event pairs, 62 based on Foata normal form. 2/750 useless extension candidates. Maximal degree in co-relation 5006. Up to 580 conditions per place. [2024-06-04 15:16:08,288 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 119 selfloop transitions, 45 changer transitions 0/166 dead transitions. [2024-06-04 15:16:08,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 166 transitions, 1890 flow [2024-06-04 15:16:08,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:16:08,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:16:08,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-04 15:16:08,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 15:16:08,302 INFO L175 Difference]: Start difference. First operand has 183 places, 152 transitions, 1504 flow. Second operand 9 states and 99 transitions. [2024-06-04 15:16:08,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 166 transitions, 1890 flow [2024-06-04 15:16:08,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 166 transitions, 1783 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-04 15:16:08,427 INFO L231 Difference]: Finished difference. Result has 184 places, 153 transitions, 1515 flow [2024-06-04 15:16:08,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1397, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1515, PETRI_PLACES=184, PETRI_TRANSITIONS=153} [2024-06-04 15:16:08,427 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 153 predicate places. [2024-06-04 15:16:08,427 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 153 transitions, 1515 flow [2024-06-04 15:16:08,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:08,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:08,428 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 15:16:08,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-04 15:16:08,428 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 15:16:08,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:08,428 INFO L85 PathProgramCache]: Analyzing trace with hash 2134113505, now seen corresponding path program 8 times [2024-06-04 15:16:08,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:08,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262530601] [2024-06-04 15:16:08,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:08,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:08,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:09,179 INFO 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 15:16:09,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:09,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262530601] [2024-06-04 15:16:09,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262530601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:09,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:09,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:16:09,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551685938] [2024-06-04 15:16:09,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:09,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:16:09,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:09,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:16:09,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:16:09,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:16:09,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 153 transitions, 1515 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:09,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:09,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:16:09,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:09,470 INFO L124 PetriNetUnfolderBase]: 426/761 cut-off events. [2024-06-04 15:16:09,470 INFO L125 PetriNetUnfolderBase]: For 51652/51658 co-relation queries the response was YES. [2024-06-04 15:16:09,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5166 conditions, 761 events. 426/761 cut-off events. For 51652/51658 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3373 event pairs, 62 based on Foata normal form. 2/758 useless extension candidates. Maximal degree in co-relation 5074. Up to 563 conditions per place. [2024-06-04 15:16:09,476 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 119 selfloop transitions, 47 changer transitions 0/168 dead transitions. [2024-06-04 15:16:09,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 168 transitions, 2031 flow [2024-06-04 15:16:09,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:16:09,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:16:09,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-04 15:16:09,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-04 15:16:09,477 INFO L175 Difference]: Start difference. First operand has 184 places, 153 transitions, 1515 flow. Second operand 9 states and 100 transitions. [2024-06-04 15:16:09,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 168 transitions, 2031 flow [2024-06-04 15:16:09,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 168 transitions, 1923 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-04 15:16:09,601 INFO L231 Difference]: Finished difference. Result has 186 places, 154 transitions, 1529 flow [2024-06-04 15:16:09,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1407, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1529, PETRI_PLACES=186, PETRI_TRANSITIONS=154} [2024-06-04 15:16:09,602 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 155 predicate places. [2024-06-04 15:16:09,602 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 154 transitions, 1529 flow [2024-06-04 15:16:09,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:09,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:09,603 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 15:16:09,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-04 15:16:09,603 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 15:16:09,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:09,603 INFO L85 PathProgramCache]: Analyzing trace with hash 2134267327, now seen corresponding path program 6 times [2024-06-04 15:16:09,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:09,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342804616] [2024-06-04 15:16:09,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:09,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:10,175 INFO 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 15:16:10,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:10,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342804616] [2024-06-04 15:16:10,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342804616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:10,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:10,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:16:10,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557738097] [2024-06-04 15:16:10,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:10,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:16:10,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:10,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:16:10,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:16:10,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:16:10,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 154 transitions, 1529 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:10,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:10,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:16:10,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:10,442 INFO L124 PetriNetUnfolderBase]: 442/787 cut-off events. [2024-06-04 15:16:10,442 INFO L125 PetriNetUnfolderBase]: For 57126/57132 co-relation queries the response was YES. [2024-06-04 15:16:10,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5435 conditions, 787 events. 442/787 cut-off events. For 57126/57132 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3531 event pairs, 77 based on Foata normal form. 2/784 useless extension candidates. Maximal degree in co-relation 5342. Up to 349 conditions per place. [2024-06-04 15:16:10,447 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 104 selfloop transitions, 75 changer transitions 0/181 dead transitions. [2024-06-04 15:16:10,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 181 transitions, 2445 flow [2024-06-04 15:16:10,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:16:10,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:16:10,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-04 15:16:10,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-04 15:16:10,449 INFO L175 Difference]: Start difference. First operand has 186 places, 154 transitions, 1529 flow. Second operand 10 states and 123 transitions. [2024-06-04 15:16:10,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 181 transitions, 2445 flow [2024-06-04 15:16:10,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 181 transitions, 2321 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-04 15:16:10,565 INFO L231 Difference]: Finished difference. Result has 190 places, 162 transitions, 1714 flow [2024-06-04 15:16:10,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1405, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1714, PETRI_PLACES=190, PETRI_TRANSITIONS=162} [2024-06-04 15:16:10,565 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 159 predicate places. [2024-06-04 15:16:10,565 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 162 transitions, 1714 flow [2024-06-04 15:16:10,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:10,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:10,566 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 15:16:10,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-04 15:16:10,566 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 15:16:10,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:10,566 INFO L85 PathProgramCache]: Analyzing trace with hash 2139838957, now seen corresponding path program 7 times [2024-06-04 15:16:10,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:10,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913628165] [2024-06-04 15:16:10,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:10,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:10,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:11,270 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 15:16:11,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:11,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913628165] [2024-06-04 15:16:11,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913628165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:11,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:11,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:16:11,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086250526] [2024-06-04 15:16:11,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:11,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:16:11,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:11,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:16:11,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:16:11,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:16:11,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 162 transitions, 1714 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:11,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:11,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:16:11,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:11,589 INFO L124 PetriNetUnfolderBase]: 481/851 cut-off events. [2024-06-04 15:16:11,589 INFO L125 PetriNetUnfolderBase]: For 73195/73201 co-relation queries the response was YES. [2024-06-04 15:16:11,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6260 conditions, 851 events. 481/851 cut-off events. For 73195/73201 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3861 event pairs, 83 based on Foata normal form. 4/850 useless extension candidates. Maximal degree in co-relation 6166. Up to 375 conditions per place. [2024-06-04 15:16:11,595 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 111 selfloop transitions, 76 changer transitions 0/189 dead transitions. [2024-06-04 15:16:11,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 189 transitions, 2673 flow [2024-06-04 15:16:11,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:16:11,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:16:11,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-04 15:16:11,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-04 15:16:11,597 INFO L175 Difference]: Start difference. First operand has 190 places, 162 transitions, 1714 flow. Second operand 10 states and 124 transitions. [2024-06-04 15:16:11,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 189 transitions, 2673 flow [2024-06-04 15:16:11,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 189 transitions, 2446 flow, removed 49 selfloop flow, removed 8 redundant places. [2024-06-04 15:16:11,749 INFO L231 Difference]: Finished difference. Result has 193 places, 169 transitions, 1795 flow [2024-06-04 15:16:11,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1519, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1795, PETRI_PLACES=193, PETRI_TRANSITIONS=169} [2024-06-04 15:16:11,750 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 162 predicate places. [2024-06-04 15:16:11,750 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 169 transitions, 1795 flow [2024-06-04 15:16:11,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:11,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:11,750 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 15:16:11,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-04 15:16:11,751 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 15:16:11,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:11,751 INFO L85 PathProgramCache]: Analyzing trace with hash 2139623755, now seen corresponding path program 9 times [2024-06-04 15:16:11,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:11,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362920539] [2024-06-04 15:16:11,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:11,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:11,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:12,638 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 15:16:12,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:12,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362920539] [2024-06-04 15:16:12,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362920539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:12,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:12,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:16:12,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991551416] [2024-06-04 15:16:12,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:12,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:16:12,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:12,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:16:12,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:16:12,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:16:12,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 169 transitions, 1795 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:12,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:12,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:16:12,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:12,932 INFO L124 PetriNetUnfolderBase]: 485/859 cut-off events. [2024-06-04 15:16:12,933 INFO L125 PetriNetUnfolderBase]: For 71339/71345 co-relation queries the response was YES. [2024-06-04 15:16:12,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6195 conditions, 859 events. 485/859 cut-off events. For 71339/71345 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3912 event pairs, 64 based on Foata normal form. 2/856 useless extension candidates. Maximal degree in co-relation 6101. Up to 686 conditions per place. [2024-06-04 15:16:12,939 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 138 selfloop transitions, 44 changer transitions 0/184 dead transitions. [2024-06-04 15:16:12,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 184 transitions, 2218 flow [2024-06-04 15:16:12,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:16:12,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:16:12,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-04 15:16:12,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-04 15:16:12,940 INFO L175 Difference]: Start difference. First operand has 193 places, 169 transitions, 1795 flow. Second operand 9 states and 101 transitions. [2024-06-04 15:16:12,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 184 transitions, 2218 flow [2024-06-04 15:16:13,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 184 transitions, 2068 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-04 15:16:13,092 INFO L231 Difference]: Finished difference. Result has 196 places, 170 transitions, 1758 flow [2024-06-04 15:16:13,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1645, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1758, PETRI_PLACES=196, PETRI_TRANSITIONS=170} [2024-06-04 15:16:13,093 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 165 predicate places. [2024-06-04 15:16:13,093 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 170 transitions, 1758 flow [2024-06-04 15:16:13,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:13,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:13,093 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 15:16:13,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-04 15:16:13,094 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 15:16:13,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:13,094 INFO L85 PathProgramCache]: Analyzing trace with hash 2139629707, now seen corresponding path program 8 times [2024-06-04 15:16:13,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:13,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424366163] [2024-06-04 15:16:13,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:13,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:13,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:13,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:16:13,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:13,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424366163] [2024-06-04 15:16:13,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424366163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:13,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:13,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:16:13,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627402108] [2024-06-04 15:16:13,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:13,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:16:13,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:13,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:16:13,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:16:13,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:16:13,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 170 transitions, 1758 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:13,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:13,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:16:13,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:14,109 INFO L124 PetriNetUnfolderBase]: 491/869 cut-off events. [2024-06-04 15:16:14,109 INFO L125 PetriNetUnfolderBase]: For 73232/73238 co-relation queries the response was YES. [2024-06-04 15:16:14,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6162 conditions, 869 events. 491/869 cut-off events. For 73232/73238 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3985 event pairs, 86 based on Foata normal form. 2/866 useless extension candidates. Maximal degree in co-relation 6067. Up to 385 conditions per place. [2024-06-04 15:16:14,116 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 115 selfloop transitions, 76 changer transitions 0/193 dead transitions. [2024-06-04 15:16:14,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 193 transitions, 2772 flow [2024-06-04 15:16:14,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:16:14,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:16:14,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-04 15:16:14,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-04 15:16:14,117 INFO L175 Difference]: Start difference. First operand has 196 places, 170 transitions, 1758 flow. Second operand 10 states and 127 transitions. [2024-06-04 15:16:14,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 193 transitions, 2772 flow [2024-06-04 15:16:14,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 193 transitions, 2670 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-04 15:16:14,268 INFO L231 Difference]: Finished difference. Result has 199 places, 173 transitions, 1863 flow [2024-06-04 15:16:14,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1656, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1863, PETRI_PLACES=199, PETRI_TRANSITIONS=173} [2024-06-04 15:16:14,269 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 168 predicate places. [2024-06-04 15:16:14,269 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 173 transitions, 1863 flow [2024-06-04 15:16:14,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:14,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:14,269 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 15:16:14,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-04 15:16:14,269 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 15:16:14,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:14,270 INFO L85 PathProgramCache]: Analyzing trace with hash 614832575, now seen corresponding path program 9 times [2024-06-04 15:16:14,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:14,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186344678] [2024-06-04 15:16:14,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:14,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:14,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:14,840 INFO 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 15:16:14,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:14,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186344678] [2024-06-04 15:16:14,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186344678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:14,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:14,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:16:14,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243549322] [2024-06-04 15:16:14,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:14,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:16:14,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:14,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:16:14,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:16:14,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:16:14,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 173 transitions, 1863 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:14,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:14,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:16:14,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:15,115 INFO L124 PetriNetUnfolderBase]: 542/951 cut-off events. [2024-06-04 15:16:15,115 INFO L125 PetriNetUnfolderBase]: For 95905/95911 co-relation queries the response was YES. [2024-06-04 15:16:15,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7389 conditions, 951 events. 542/951 cut-off events. For 95905/95911 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4416 event pairs, 75 based on Foata normal form. 2/948 useless extension candidates. Maximal degree in co-relation 7293. Up to 414 conditions per place. [2024-06-04 15:16:15,123 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 114 selfloop transitions, 87 changer transitions 0/203 dead transitions. [2024-06-04 15:16:15,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 203 transitions, 3035 flow [2024-06-04 15:16:15,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:16:15,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:16:15,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-04 15:16:15,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-04 15:16:15,124 INFO L175 Difference]: Start difference. First operand has 199 places, 173 transitions, 1863 flow. Second operand 10 states and 125 transitions. [2024-06-04 15:16:15,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 203 transitions, 3035 flow [2024-06-04 15:16:15,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 203 transitions, 2878 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-04 15:16:15,319 INFO L231 Difference]: Finished difference. Result has 205 places, 182 transitions, 2071 flow [2024-06-04 15:16:15,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1718, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2071, PETRI_PLACES=205, PETRI_TRANSITIONS=182} [2024-06-04 15:16:15,320 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 174 predicate places. [2024-06-04 15:16:15,320 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 182 transitions, 2071 flow [2024-06-04 15:16:15,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:15,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:15,320 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 15:16:15,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-04 15:16:15,321 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 15:16:15,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:15,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1287477527, now seen corresponding path program 10 times [2024-06-04 15:16:15,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:15,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130744740] [2024-06-04 15:16:15,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:15,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:15,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:15,970 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 15:16:15,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:15,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130744740] [2024-06-04 15:16:15,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130744740] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:15,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:15,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:16:15,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704452138] [2024-06-04 15:16:15,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:15,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:16:15,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:15,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:16:15,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:16:16,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:16:16,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 182 transitions, 2071 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:16,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:16,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:16:16,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:16,278 INFO L124 PetriNetUnfolderBase]: 538/945 cut-off events. [2024-06-04 15:16:16,278 INFO L125 PetriNetUnfolderBase]: For 94123/94129 co-relation queries the response was YES. [2024-06-04 15:16:16,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7356 conditions, 945 events. 538/945 cut-off events. For 94123/94129 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4397 event pairs, 94 based on Foata normal form. 2/942 useless extension candidates. Maximal degree in co-relation 7257. Up to 413 conditions per place. [2024-06-04 15:16:16,285 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 117 selfloop transitions, 82 changer transitions 0/201 dead transitions. [2024-06-04 15:16:16,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 201 transitions, 2931 flow [2024-06-04 15:16:16,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:16:16,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:16:16,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-04 15:16:16,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-04 15:16:16,287 INFO L175 Difference]: Start difference. First operand has 205 places, 182 transitions, 2071 flow. Second operand 10 states and 125 transitions. [2024-06-04 15:16:16,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 201 transitions, 2931 flow [2024-06-04 15:16:16,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 201 transitions, 2741 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-04 15:16:16,497 INFO L231 Difference]: Finished difference. Result has 210 places, 182 transitions, 2050 flow [2024-06-04 15:16:16,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1881, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2050, PETRI_PLACES=210, PETRI_TRANSITIONS=182} [2024-06-04 15:16:16,498 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 179 predicate places. [2024-06-04 15:16:16,498 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 182 transitions, 2050 flow [2024-06-04 15:16:16,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:16,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:16,498 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 15:16:16,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-04 15:16:16,499 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 15:16:16,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:16,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1481209175, now seen corresponding path program 10 times [2024-06-04 15:16:16,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:16,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121770224] [2024-06-04 15:16:16,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:16,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:16,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:17,433 INFO 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 15:16:17,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:17,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121770224] [2024-06-04 15:16:17,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121770224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:17,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:17,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:16:17,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843985113] [2024-06-04 15:16:17,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:17,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:16:17,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:17,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:16:17,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:16:17,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:16:17,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 182 transitions, 2050 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:17,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:17,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:16:17,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:17,733 INFO L124 PetriNetUnfolderBase]: 535/940 cut-off events. [2024-06-04 15:16:17,733 INFO L125 PetriNetUnfolderBase]: For 92093/92099 co-relation queries the response was YES. [2024-06-04 15:16:17,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7179 conditions, 940 events. 535/940 cut-off events. For 92093/92099 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4352 event pairs, 72 based on Foata normal form. 2/937 useless extension candidates. Maximal degree in co-relation 7079. Up to 767 conditions per place. [2024-06-04 15:16:17,740 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 143 selfloop transitions, 50 changer transitions 0/195 dead transitions. [2024-06-04 15:16:17,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 195 transitions, 2472 flow [2024-06-04 15:16:17,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:16:17,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:16:17,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-04 15:16:17,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-04 15:16:17,742 INFO L175 Difference]: Start difference. First operand has 210 places, 182 transitions, 2050 flow. Second operand 9 states and 98 transitions. [2024-06-04 15:16:17,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 195 transitions, 2472 flow [2024-06-04 15:16:17,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 195 transitions, 2297 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-04 15:16:17,963 INFO L231 Difference]: Finished difference. Result has 211 places, 182 transitions, 1979 flow [2024-06-04 15:16:17,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1875, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1979, PETRI_PLACES=211, PETRI_TRANSITIONS=182} [2024-06-04 15:16:17,963 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 180 predicate places. [2024-06-04 15:16:17,963 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 182 transitions, 1979 flow [2024-06-04 15:16:17,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:17,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:17,964 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 15:16:17,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-04 15:16:17,964 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 15:16:17,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:17,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1287485246, now seen corresponding path program 2 times [2024-06-04 15:16:17,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:17,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115290328] [2024-06-04 15:16:17,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:17,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:17,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:18,845 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 15:16:18,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:18,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115290328] [2024-06-04 15:16:18,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115290328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:18,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:18,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:16:18,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184974983] [2024-06-04 15:16:18,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:18,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:16:18,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:18,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:16:18,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:16:18,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:16:18,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 182 transitions, 1979 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:18,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:18,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:16:18,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:19,186 INFO L124 PetriNetUnfolderBase]: 527/926 cut-off events. [2024-06-04 15:16:19,186 INFO L125 PetriNetUnfolderBase]: For 88909/88909 co-relation queries the response was YES. [2024-06-04 15:16:19,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6812 conditions, 926 events. 527/926 cut-off events. For 88909/88909 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4322 event pairs, 80 based on Foata normal form. 3/925 useless extension candidates. Maximal degree in co-relation 6711. Up to 514 conditions per place. [2024-06-04 15:16:19,193 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 115 selfloop transitions, 90 changer transitions 0/207 dead transitions. [2024-06-04 15:16:19,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 207 transitions, 2808 flow [2024-06-04 15:16:19,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:16:19,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:16:19,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-04 15:16:19,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-04 15:16:19,194 INFO L175 Difference]: Start difference. First operand has 211 places, 182 transitions, 1979 flow. Second operand 11 states and 129 transitions. [2024-06-04 15:16:19,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 207 transitions, 2808 flow [2024-06-04 15:16:19,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 207 transitions, 2636 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-04 15:16:19,380 INFO L231 Difference]: Finished difference. Result has 216 places, 187 transitions, 2107 flow [2024-06-04 15:16:19,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1809, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2107, PETRI_PLACES=216, PETRI_TRANSITIONS=187} [2024-06-04 15:16:19,380 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 185 predicate places. [2024-06-04 15:16:19,380 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 187 transitions, 2107 flow [2024-06-04 15:16:19,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:19,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:19,381 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 15:16:19,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-04 15:16:19,381 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 15:16:19,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:19,381 INFO L85 PathProgramCache]: Analyzing trace with hash 614630765, now seen corresponding path program 11 times [2024-06-04 15:16:19,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:19,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613610372] [2024-06-04 15:16:19,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:19,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:19,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:20,079 INFO 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 15:16:20,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:20,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613610372] [2024-06-04 15:16:20,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613610372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:20,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:20,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:16:20,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405295320] [2024-06-04 15:16:20,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:20,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:16:20,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:20,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:16:20,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:16:20,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:16:20,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 187 transitions, 2107 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:20,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:20,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:16:20,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:20,376 INFO L124 PetriNetUnfolderBase]: 523/921 cut-off events. [2024-06-04 15:16:20,376 INFO L125 PetriNetUnfolderBase]: For 84350/84356 co-relation queries the response was YES. [2024-06-04 15:16:20,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6794 conditions, 921 events. 523/921 cut-off events. For 84350/84356 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4262 event pairs, 72 based on Foata normal form. 2/918 useless extension candidates. Maximal degree in co-relation 6689. Up to 400 conditions per place. [2024-06-04 15:16:20,383 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 107 selfloop transitions, 97 changer transitions 0/206 dead transitions. [2024-06-04 15:16:20,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 206 transitions, 3015 flow [2024-06-04 15:16:20,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:16:20,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:16:20,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-04 15:16:20,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-04 15:16:20,385 INFO L175 Difference]: Start difference. First operand has 216 places, 187 transitions, 2107 flow. Second operand 10 states and 122 transitions. [2024-06-04 15:16:20,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 206 transitions, 3015 flow [2024-06-04 15:16:20,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 206 transitions, 2848 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-04 15:16:20,586 INFO L231 Difference]: Finished difference. Result has 218 places, 188 transitions, 2163 flow [2024-06-04 15:16:20,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1943, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2163, PETRI_PLACES=218, PETRI_TRANSITIONS=188} [2024-06-04 15:16:20,586 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 187 predicate places. [2024-06-04 15:16:20,586 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 188 transitions, 2163 flow [2024-06-04 15:16:20,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:20,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:20,587 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 15:16:20,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-04 15:16:20,587 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 15:16:20,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:20,587 INFO L85 PathProgramCache]: Analyzing trace with hash 880537295, now seen corresponding path program 12 times [2024-06-04 15:16:20,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:20,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873402862] [2024-06-04 15:16:20,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:20,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:20,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:21,278 INFO 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 15:16:21,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:21,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873402862] [2024-06-04 15:16:21,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873402862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:21,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:21,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:16:21,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246282193] [2024-06-04 15:16:21,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:21,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:16:21,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:21,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:16:21,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:16:21,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:16:21,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 188 transitions, 2163 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:21,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:21,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:16:21,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:21,655 INFO L124 PetriNetUnfolderBase]: 552/968 cut-off events. [2024-06-04 15:16:21,656 INFO L125 PetriNetUnfolderBase]: For 99535/99535 co-relation queries the response was YES. [2024-06-04 15:16:21,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7374 conditions, 968 events. 552/968 cut-off events. For 99535/99535 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4545 event pairs, 101 based on Foata normal form. 4/971 useless extension candidates. Maximal degree in co-relation 7267. Up to 907 conditions per place. [2024-06-04 15:16:21,663 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 184 selfloop transitions, 21 changer transitions 0/207 dead transitions. [2024-06-04 15:16:21,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 207 transitions, 2889 flow [2024-06-04 15:16:21,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:16:21,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:16:21,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-04 15:16:21,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.321875 [2024-06-04 15:16:21,665 INFO L175 Difference]: Start difference. First operand has 218 places, 188 transitions, 2163 flow. Second operand 10 states and 103 transitions. [2024-06-04 15:16:21,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 207 transitions, 2889 flow [2024-06-04 15:16:21,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 207 transitions, 2579 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-04 15:16:21,911 INFO L231 Difference]: Finished difference. Result has 219 places, 195 transitions, 2066 flow [2024-06-04 15:16:21,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1874, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2066, PETRI_PLACES=219, PETRI_TRANSITIONS=195} [2024-06-04 15:16:21,912 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 188 predicate places. [2024-06-04 15:16:21,912 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 195 transitions, 2066 flow [2024-06-04 15:16:21,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:21,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:21,912 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 15:16:21,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-04 15:16:21,913 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 15:16:21,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:21,913 INFO L85 PathProgramCache]: Analyzing trace with hash 880864004, now seen corresponding path program 3 times [2024-06-04 15:16:21,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:21,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420416234] [2024-06-04 15:16:21,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:21,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:21,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:22,793 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 15:16:22,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:22,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420416234] [2024-06-04 15:16:22,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420416234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:22,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:22,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:16:22,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077566995] [2024-06-04 15:16:22,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:22,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:16:22,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:22,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:16:22,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:16:22,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:16:22,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 195 transitions, 2066 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:22,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:22,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:16:22,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:23,158 INFO L124 PetriNetUnfolderBase]: 548/961 cut-off events. [2024-06-04 15:16:23,158 INFO L125 PetriNetUnfolderBase]: For 91001/91001 co-relation queries the response was YES. [2024-06-04 15:16:23,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7014 conditions, 961 events. 548/961 cut-off events. For 91001/91001 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4524 event pairs, 104 based on Foata normal form. 1/961 useless extension candidates. Maximal degree in co-relation 6906. Up to 926 conditions per place. [2024-06-04 15:16:23,166 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 186 selfloop transitions, 18 changer transitions 0/206 dead transitions. [2024-06-04 15:16:23,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 206 transitions, 2507 flow [2024-06-04 15:16:23,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:16:23,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:16:23,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 104 transitions. [2024-06-04 15:16:23,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29545454545454547 [2024-06-04 15:16:23,167 INFO L175 Difference]: Start difference. First operand has 219 places, 195 transitions, 2066 flow. Second operand 11 states and 104 transitions. [2024-06-04 15:16:23,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 206 transitions, 2507 flow [2024-06-04 15:16:23,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 206 transitions, 2427 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-04 15:16:23,429 INFO L231 Difference]: Finished difference. Result has 223 places, 196 transitions, 2041 flow [2024-06-04 15:16:23,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1987, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2041, PETRI_PLACES=223, PETRI_TRANSITIONS=196} [2024-06-04 15:16:23,429 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 192 predicate places. [2024-06-04 15:16:23,430 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 196 transitions, 2041 flow [2024-06-04 15:16:23,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:23,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:23,430 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 15:16:23,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-04 15:16:23,430 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 15:16:23,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:23,431 INFO L85 PathProgramCache]: Analyzing trace with hash 871333085, now seen corresponding path program 13 times [2024-06-04 15:16:23,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:23,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595356827] [2024-06-04 15:16:23,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:23,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:23,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:23,989 INFO 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 15:16:23,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:23,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595356827] [2024-06-04 15:16:23,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595356827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:23,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:23,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:16:23,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722802451] [2024-06-04 15:16:23,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:23,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:16:23,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:23,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:16:23,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:16:24,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:16:24,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 196 transitions, 2041 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:24,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:24,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:16:24,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:24,308 INFO L124 PetriNetUnfolderBase]: 554/972 cut-off events. [2024-06-04 15:16:24,308 INFO L125 PetriNetUnfolderBase]: For 97165/97171 co-relation queries the response was YES. [2024-06-04 15:16:24,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7069 conditions, 972 events. 554/972 cut-off events. For 97165/97171 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4582 event pairs, 62 based on Foata normal form. 2/969 useless extension candidates. Maximal degree in co-relation 6960. Up to 421 conditions per place. [2024-06-04 15:16:24,316 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 105 selfloop transitions, 109 changer transitions 0/216 dead transitions. [2024-06-04 15:16:24,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 216 transitions, 3009 flow [2024-06-04 15:16:24,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:16:24,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:16:24,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-04 15:16:24,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-04 15:16:24,317 INFO L175 Difference]: Start difference. First operand has 223 places, 196 transitions, 2041 flow. Second operand 10 states and 121 transitions. [2024-06-04 15:16:24,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 216 transitions, 3009 flow [2024-06-04 15:16:24,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 216 transitions, 2961 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-04 15:16:24,544 INFO L231 Difference]: Finished difference. Result has 224 places, 198 transitions, 2262 flow [2024-06-04 15:16:24,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1993, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2262, PETRI_PLACES=224, PETRI_TRANSITIONS=198} [2024-06-04 15:16:24,545 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 193 predicate places. [2024-06-04 15:16:24,545 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 198 transitions, 2262 flow [2024-06-04 15:16:24,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:24,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:24,545 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 15:16:24,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-04 15:16:24,546 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 15:16:24,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:24,546 INFO L85 PathProgramCache]: Analyzing trace with hash 873966301, now seen corresponding path program 14 times [2024-06-04 15:16:24,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:24,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512198604] [2024-06-04 15:16:24,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:24,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:25,088 INFO 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 15:16:25,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:25,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512198604] [2024-06-04 15:16:25,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512198604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:25,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:25,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:16:25,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958560380] [2024-06-04 15:16:25,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:25,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:16:25,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:25,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:16:25,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:16:25,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:16:25,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 198 transitions, 2262 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:25,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:25,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:16:25,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:25,420 INFO L124 PetriNetUnfolderBase]: 548/964 cut-off events. [2024-06-04 15:16:25,421 INFO L125 PetriNetUnfolderBase]: For 94140/94146 co-relation queries the response was YES. [2024-06-04 15:16:25,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7010 conditions, 964 events. 548/964 cut-off events. For 94140/94146 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4545 event pairs, 68 based on Foata normal form. 4/963 useless extension candidates. Maximal degree in co-relation 6900. Up to 420 conditions per place. [2024-06-04 15:16:25,430 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 109 selfloop transitions, 105 changer transitions 0/216 dead transitions. [2024-06-04 15:16:25,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 216 transitions, 3190 flow [2024-06-04 15:16:25,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:16:25,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:16:25,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-04 15:16:25,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-04 15:16:25,437 INFO L175 Difference]: Start difference. First operand has 224 places, 198 transitions, 2262 flow. Second operand 10 states and 122 transitions. [2024-06-04 15:16:25,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 216 transitions, 3190 flow [2024-06-04 15:16:25,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 216 transitions, 2863 flow, removed 37 selfloop flow, removed 10 redundant places. [2024-06-04 15:16:25,651 INFO L231 Difference]: Finished difference. Result has 224 places, 198 transitions, 2153 flow [2024-06-04 15:16:25,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1935, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2153, PETRI_PLACES=224, PETRI_TRANSITIONS=198} [2024-06-04 15:16:25,652 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 193 predicate places. [2024-06-04 15:16:25,652 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 198 transitions, 2153 flow [2024-06-04 15:16:25,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:25,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:25,652 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 15:16:25,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-04 15:16:25,653 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 15:16:25,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:25,653 INFO L85 PathProgramCache]: Analyzing trace with hash 871340804, now seen corresponding path program 4 times [2024-06-04 15:16:25,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:25,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323418136] [2024-06-04 15:16:25,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:25,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:25,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:26,602 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 15:16:26,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:26,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323418136] [2024-06-04 15:16:26,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323418136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:26,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:26,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:16:26,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616608178] [2024-06-04 15:16:26,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:26,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:16:26,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:26,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:16:26,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:16:26,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:16:26,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 198 transitions, 2153 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:26,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:26,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:16:26,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:26,885 INFO L124 PetriNetUnfolderBase]: 544/957 cut-off events. [2024-06-04 15:16:26,886 INFO L125 PetriNetUnfolderBase]: For 85124/85130 co-relation queries the response was YES. [2024-06-04 15:16:26,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6762 conditions, 957 events. 544/957 cut-off events. For 85124/85130 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4510 event pairs, 97 based on Foata normal form. 5/959 useless extension candidates. Maximal degree in co-relation 6653. Up to 874 conditions per place. [2024-06-04 15:16:26,893 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 168 selfloop transitions, 39 changer transitions 0/209 dead transitions. [2024-06-04 15:16:26,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 209 transitions, 2608 flow [2024-06-04 15:16:26,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:16:26,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:16:26,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-04 15:16:26,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31875 [2024-06-04 15:16:26,895 INFO L175 Difference]: Start difference. First operand has 224 places, 198 transitions, 2153 flow. Second operand 10 states and 102 transitions. [2024-06-04 15:16:26,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 209 transitions, 2608 flow [2024-06-04 15:16:27,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 209 transitions, 2364 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-04 15:16:27,122 INFO L231 Difference]: Finished difference. Result has 225 places, 199 transitions, 2006 flow [2024-06-04 15:16:27,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1912, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2006, PETRI_PLACES=225, PETRI_TRANSITIONS=199} [2024-06-04 15:16:27,123 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 194 predicate places. [2024-06-04 15:16:27,123 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 199 transitions, 2006 flow [2024-06-04 15:16:27,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:27,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:27,123 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 15:16:27,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-04 15:16:27,123 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 15:16:27,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:27,124 INFO L85 PathProgramCache]: Analyzing trace with hash 614840015, now seen corresponding path program 15 times [2024-06-04 15:16:27,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:27,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130656922] [2024-06-04 15:16:27,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:27,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:27,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:27,678 INFO 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 15:16:27,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:27,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130656922] [2024-06-04 15:16:27,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130656922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:27,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:27,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:16:27,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836620732] [2024-06-04 15:16:27,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:27,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:16:27,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:27,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:16:27,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:16:27,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:16:27,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 199 transitions, 2006 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:27,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:27,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:16:27,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:27,954 INFO L124 PetriNetUnfolderBase]: 538/949 cut-off events. [2024-06-04 15:16:27,954 INFO L125 PetriNetUnfolderBase]: For 84360/84366 co-relation queries the response was YES. [2024-06-04 15:16:27,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6205 conditions, 949 events. 538/949 cut-off events. For 84360/84366 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4461 event pairs, 74 based on Foata normal form. 4/948 useless extension candidates. Maximal degree in co-relation 6096. Up to 415 conditions per place. [2024-06-04 15:16:27,962 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 116 selfloop transitions, 99 changer transitions 0/217 dead transitions. [2024-06-04 15:16:27,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 217 transitions, 2948 flow [2024-06-04 15:16:27,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:16:27,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:16:27,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-04 15:16:27,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-04 15:16:27,964 INFO L175 Difference]: Start difference. First operand has 225 places, 199 transitions, 2006 flow. Second operand 10 states and 123 transitions. [2024-06-04 15:16:27,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 217 transitions, 2948 flow [2024-06-04 15:16:28,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 217 transitions, 2821 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-04 15:16:28,147 INFO L231 Difference]: Finished difference. Result has 227 places, 199 transitions, 2085 flow [2024-06-04 15:16:28,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1879, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2085, PETRI_PLACES=227, PETRI_TRANSITIONS=199} [2024-06-04 15:16:28,148 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 196 predicate places. [2024-06-04 15:16:28,148 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 199 transitions, 2085 flow [2024-06-04 15:16:28,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:28,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:28,148 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 15:16:28,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-04 15:16:28,149 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 15:16:28,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:28,149 INFO L85 PathProgramCache]: Analyzing trace with hash 614840294, now seen corresponding path program 5 times [2024-06-04 15:16:28,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:28,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750088677] [2024-06-04 15:16:28,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:28,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:28,934 INFO 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 15:16:28,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:28,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750088677] [2024-06-04 15:16:28,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750088677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:28,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:28,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:16:28,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516972838] [2024-06-04 15:16:28,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:28,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:16:28,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:28,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:16:28,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:16:28,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:16:28,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 199 transitions, 2085 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:28,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:28,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:16:28,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:29,178 INFO L124 PetriNetUnfolderBase]: 534/942 cut-off events. [2024-06-04 15:16:29,179 INFO L125 PetriNetUnfolderBase]: For 74796/74802 co-relation queries the response was YES. [2024-06-04 15:16:29,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6234 conditions, 942 events. 534/942 cut-off events. For 74796/74802 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4438 event pairs, 92 based on Foata normal form. 5/944 useless extension candidates. Maximal degree in co-relation 6124. Up to 859 conditions per place. [2024-06-04 15:16:29,187 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 171 selfloop transitions, 37 changer transitions 0/210 dead transitions. [2024-06-04 15:16:29,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 210 transitions, 2540 flow [2024-06-04 15:16:29,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:16:29,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:16:29,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-04 15:16:29,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.321875 [2024-06-04 15:16:29,188 INFO L175 Difference]: Start difference. First operand has 227 places, 199 transitions, 2085 flow. Second operand 10 states and 103 transitions. [2024-06-04 15:16:29,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 210 transitions, 2540 flow [2024-06-04 15:16:29,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 210 transitions, 2340 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-04 15:16:29,354 INFO L231 Difference]: Finished difference. Result has 229 places, 200 transitions, 1976 flow [2024-06-04 15:16:29,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1886, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1976, PETRI_PLACES=229, PETRI_TRANSITIONS=200} [2024-06-04 15:16:29,354 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 198 predicate places. [2024-06-04 15:16:29,354 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 200 transitions, 1976 flow [2024-06-04 15:16:29,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:29,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:29,355 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 15:16:29,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-04 15:16:29,355 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 15:16:29,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:29,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1340228856, now seen corresponding path program 1 times [2024-06-04 15:16:29,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:29,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489276437] [2024-06-04 15:16:29,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:29,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:29,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:30,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:16:30,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:30,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489276437] [2024-06-04 15:16:30,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489276437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:30,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:30,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:16:30,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274278347] [2024-06-04 15:16:30,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:30,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:16:30,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:30,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:16:30,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:16:30,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:16:30,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 200 transitions, 1976 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:16:30,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:30,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:16:30,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:30,474 INFO L124 PetriNetUnfolderBase]: 538/949 cut-off events. [2024-06-04 15:16:30,474 INFO L125 PetriNetUnfolderBase]: For 79184/79184 co-relation queries the response was YES. [2024-06-04 15:16:30,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6125 conditions, 949 events. 538/949 cut-off events. For 79184/79184 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4479 event pairs, 69 based on Foata normal form. 2/950 useless extension candidates. Maximal degree in co-relation 6014. Up to 843 conditions per place. [2024-06-04 15:16:30,482 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 195 selfloop transitions, 22 changer transitions 0/219 dead transitions. [2024-06-04 15:16:30,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 219 transitions, 2469 flow [2024-06-04 15:16:30,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:16:30,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:16:30,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-04 15:16:30,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31875 [2024-06-04 15:16:30,483 INFO L175 Difference]: Start difference. First operand has 229 places, 200 transitions, 1976 flow. Second operand 10 states and 102 transitions. [2024-06-04 15:16:30,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 219 transitions, 2469 flow [2024-06-04 15:16:30,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 219 transitions, 2382 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-04 15:16:30,667 INFO L231 Difference]: Finished difference. Result has 231 places, 201 transitions, 1949 flow [2024-06-04 15:16:30,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1889, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1949, PETRI_PLACES=231, PETRI_TRANSITIONS=201} [2024-06-04 15:16:30,668 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 200 predicate places. [2024-06-04 15:16:30,668 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 201 transitions, 1949 flow [2024-06-04 15:16:30,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:16:30,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:30,669 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 15:16:30,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-04 15:16:30,669 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 15:16:30,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:30,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1955908214, now seen corresponding path program 1 times [2024-06-04 15:16:30,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:30,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419092749] [2024-06-04 15:16:30,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:30,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:30,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:31,450 INFO 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 15:16:31,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:31,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419092749] [2024-06-04 15:16:31,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419092749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:31,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:31,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:16:31,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166678242] [2024-06-04 15:16:31,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:31,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:16:31,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:31,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:16:31,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:16:31,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:16:31,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 201 transitions, 1949 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:16:31,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:31,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:16:31,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:31,874 INFO L124 PetriNetUnfolderBase]: 535/944 cut-off events. [2024-06-04 15:16:31,875 INFO L125 PetriNetUnfolderBase]: For 74556/74556 co-relation queries the response was YES. [2024-06-04 15:16:31,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6016 conditions, 944 events. 535/944 cut-off events. For 74556/74556 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4473 event pairs, 80 based on Foata normal form. 1/944 useless extension candidates. Maximal degree in co-relation 5904. Up to 825 conditions per place. [2024-06-04 15:16:31,882 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 179 selfloop transitions, 38 changer transitions 0/219 dead transitions. [2024-06-04 15:16:31,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 219 transitions, 2440 flow [2024-06-04 15:16:31,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:16:31,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:16:31,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-04 15:16:31,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-04 15:16:31,883 INFO L175 Difference]: Start difference. First operand has 231 places, 201 transitions, 1949 flow. Second operand 10 states and 107 transitions. [2024-06-04 15:16:31,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 219 transitions, 2440 flow [2024-06-04 15:16:32,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 219 transitions, 2378 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-04 15:16:32,055 INFO L231 Difference]: Finished difference. Result has 233 places, 201 transitions, 1971 flow [2024-06-04 15:16:32,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1887, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1971, PETRI_PLACES=233, PETRI_TRANSITIONS=201} [2024-06-04 15:16:32,055 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 202 predicate places. [2024-06-04 15:16:32,055 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 201 transitions, 1971 flow [2024-06-04 15:16:32,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:16:32,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:32,056 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 15:16:32,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-04 15:16:32,056 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 15:16:32,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:32,056 INFO L85 PathProgramCache]: Analyzing trace with hash -998567836, now seen corresponding path program 2 times [2024-06-04 15:16:32,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:32,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805846207] [2024-06-04 15:16:32,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:32,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:32,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:32,878 INFO 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 15:16:32,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:32,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805846207] [2024-06-04 15:16:32,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805846207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:32,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:32,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:16:32,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819250399] [2024-06-04 15:16:32,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:32,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:16:32,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:32,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:16:32,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:16:32,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:16:32,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 201 transitions, 1971 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:16:32,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:32,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:16:32,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:33,272 INFO L124 PetriNetUnfolderBase]: 539/952 cut-off events. [2024-06-04 15:16:33,273 INFO L125 PetriNetUnfolderBase]: For 80026/80026 co-relation queries the response was YES. [2024-06-04 15:16:33,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6095 conditions, 952 events. 539/952 cut-off events. For 80026/80026 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4517 event pairs, 82 based on Foata normal form. 2/953 useless extension candidates. Maximal degree in co-relation 5982. Up to 836 conditions per place. [2024-06-04 15:16:33,280 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 183 selfloop transitions, 35 changer transitions 0/220 dead transitions. [2024-06-04 15:16:33,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 220 transitions, 2474 flow [2024-06-04 15:16:33,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:16:33,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:16:33,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-04 15:16:33,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-04 15:16:33,281 INFO L175 Difference]: Start difference. First operand has 233 places, 201 transitions, 1971 flow. Second operand 10 states and 106 transitions. [2024-06-04 15:16:33,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 220 transitions, 2474 flow [2024-06-04 15:16:33,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 220 transitions, 2289 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-04 15:16:33,464 INFO L231 Difference]: Finished difference. Result has 230 places, 202 transitions, 1875 flow [2024-06-04 15:16:33,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1786, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1875, PETRI_PLACES=230, PETRI_TRANSITIONS=202} [2024-06-04 15:16:33,465 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 199 predicate places. [2024-06-04 15:16:33,465 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 202 transitions, 1875 flow [2024-06-04 15:16:33,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:16:33,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:33,465 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 15:16:33,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-04 15:16:33,466 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 15:16:33,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:33,466 INFO L85 PathProgramCache]: Analyzing trace with hash -998572486, now seen corresponding path program 3 times [2024-06-04 15:16:33,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:33,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127910284] [2024-06-04 15:16:33,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:33,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:33,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:34,319 INFO 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 15:16:34,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:34,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127910284] [2024-06-04 15:16:34,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127910284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:34,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:34,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:16:34,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669071481] [2024-06-04 15:16:34,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:34,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:16:34,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:34,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:16:34,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:16:34,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:16:34,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 202 transitions, 1875 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:16:34,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:34,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:16:34,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:34,762 INFO L124 PetriNetUnfolderBase]: 578/1021 cut-off events. [2024-06-04 15:16:34,763 INFO L125 PetriNetUnfolderBase]: For 81980/81980 co-relation queries the response was YES. [2024-06-04 15:16:34,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6353 conditions, 1021 events. 578/1021 cut-off events. For 81980/81980 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4937 event pairs, 92 based on Foata normal form. 2/1019 useless extension candidates. Maximal degree in co-relation 6240. Up to 908 conditions per place. [2024-06-04 15:16:34,772 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 202 selfloop transitions, 32 changer transitions 0/236 dead transitions. [2024-06-04 15:16:34,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 236 transitions, 2601 flow [2024-06-04 15:16:34,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:16:34,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:16:34,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-04 15:16:34,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-04 15:16:34,788 INFO L175 Difference]: Start difference. First operand has 230 places, 202 transitions, 1875 flow. Second operand 11 states and 115 transitions. [2024-06-04 15:16:34,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 236 transitions, 2601 flow [2024-06-04 15:16:35,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 236 transitions, 2487 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-04 15:16:35,019 INFO L231 Difference]: Finished difference. Result has 238 places, 217 transitions, 2085 flow [2024-06-04 15:16:35,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1798, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2085, PETRI_PLACES=238, PETRI_TRANSITIONS=217} [2024-06-04 15:16:35,020 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 207 predicate places. [2024-06-04 15:16:35,020 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 217 transitions, 2085 flow [2024-06-04 15:16:35,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:16:35,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:35,021 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 15:16:35,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-04 15:16:35,021 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 15:16:35,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:35,021 INFO L85 PathProgramCache]: Analyzing trace with hash -2115016520, now seen corresponding path program 4 times [2024-06-04 15:16:35,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:35,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893436456] [2024-06-04 15:16:35,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:35,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:35,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:35,724 INFO 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 15:16:35,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:35,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893436456] [2024-06-04 15:16:35,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893436456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:35,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:35,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:16:35,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520615067] [2024-06-04 15:16:35,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:35,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:16:35,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:35,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:16:35,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:16:35,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:16:35,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 217 transitions, 2085 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:16:35,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:35,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:16:35,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:36,112 INFO L124 PetriNetUnfolderBase]: 623/1104 cut-off events. [2024-06-04 15:16:36,112 INFO L125 PetriNetUnfolderBase]: For 91174/91174 co-relation queries the response was YES. [2024-06-04 15:16:36,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6956 conditions, 1104 events. 623/1104 cut-off events. For 91174/91174 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5538 event pairs, 117 based on Foata normal form. 2/1105 useless extension candidates. Maximal degree in co-relation 6837. Up to 964 conditions per place. [2024-06-04 15:16:36,121 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 217 selfloop transitions, 34 changer transitions 0/253 dead transitions. [2024-06-04 15:16:36,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 253 transitions, 2966 flow [2024-06-04 15:16:36,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:16:36,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:16:36,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-04 15:16:36,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-04 15:16:36,123 INFO L175 Difference]: Start difference. First operand has 238 places, 217 transitions, 2085 flow. Second operand 11 states and 119 transitions. [2024-06-04 15:16:36,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 253 transitions, 2966 flow [2024-06-04 15:16:36,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 253 transitions, 2904 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-04 15:16:36,384 INFO L231 Difference]: Finished difference. Result has 249 places, 229 transitions, 2286 flow [2024-06-04 15:16:36,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2025, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2286, PETRI_PLACES=249, PETRI_TRANSITIONS=229} [2024-06-04 15:16:36,385 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 218 predicate places. [2024-06-04 15:16:36,385 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 229 transitions, 2286 flow [2024-06-04 15:16:36,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:16:36,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:36,386 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 15:16:36,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-04 15:16:36,386 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 15:16:36,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:36,386 INFO L85 PathProgramCache]: Analyzing trace with hash -495068332, now seen corresponding path program 5 times [2024-06-04 15:16:36,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:36,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490403729] [2024-06-04 15:16:36,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:36,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:36,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:37,174 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 15:16:37,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:37,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490403729] [2024-06-04 15:16:37,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490403729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:37,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:37,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:16:37,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888070096] [2024-06-04 15:16:37,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:37,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:16:37,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:37,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:16:37,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:16:37,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:16:37,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 229 transitions, 2286 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:16:37,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:37,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:16:37,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:37,561 INFO L124 PetriNetUnfolderBase]: 620/1099 cut-off events. [2024-06-04 15:16:37,561 INFO L125 PetriNetUnfolderBase]: For 86592/86592 co-relation queries the response was YES. [2024-06-04 15:16:37,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6880 conditions, 1099 events. 620/1099 cut-off events. For 86592/86592 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5529 event pairs, 119 based on Foata normal form. 2/1100 useless extension candidates. Maximal degree in co-relation 6756. Up to 986 conditions per place. [2024-06-04 15:16:37,570 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 216 selfloop transitions, 34 changer transitions 0/252 dead transitions. [2024-06-04 15:16:37,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 252 transitions, 2862 flow [2024-06-04 15:16:37,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:16:37,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:16:37,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-04 15:16:37,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-04 15:16:37,572 INFO L175 Difference]: Start difference. First operand has 249 places, 229 transitions, 2286 flow. Second operand 11 states and 117 transitions. [2024-06-04 15:16:37,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 252 transitions, 2862 flow [2024-06-04 15:16:37,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 252 transitions, 2798 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-04 15:16:37,825 INFO L231 Difference]: Finished difference. Result has 257 places, 230 transitions, 2307 flow [2024-06-04 15:16:37,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2222, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2307, PETRI_PLACES=257, PETRI_TRANSITIONS=230} [2024-06-04 15:16:37,826 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-04 15:16:37,826 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 230 transitions, 2307 flow [2024-06-04 15:16:37,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:16:37,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:37,827 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 15:16:37,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-04 15:16:37,827 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 15:16:37,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:37,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1146697794, now seen corresponding path program 6 times [2024-06-04 15:16:37,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:37,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964440821] [2024-06-04 15:16:37,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:37,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:37,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:38,698 INFO 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 15:16:38,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:38,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964440821] [2024-06-04 15:16:38,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964440821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:38,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:38,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:16:38,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279432696] [2024-06-04 15:16:38,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:38,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:16:38,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:38,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:16:38,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:16:38,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:16:38,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 230 transitions, 2307 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:16:38,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:38,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:16:38,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:39,156 INFO L124 PetriNetUnfolderBase]: 639/1136 cut-off events. [2024-06-04 15:16:39,156 INFO L125 PetriNetUnfolderBase]: For 95930/95930 co-relation queries the response was YES. [2024-06-04 15:16:39,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7262 conditions, 1136 events. 639/1136 cut-off events. For 95930/95930 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5768 event pairs, 102 based on Foata normal form. 2/1137 useless extension candidates. Maximal degree in co-relation 7135. Up to 996 conditions per place. [2024-06-04 15:16:39,167 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 222 selfloop transitions, 33 changer transitions 0/257 dead transitions. [2024-06-04 15:16:39,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 257 transitions, 3108 flow [2024-06-04 15:16:39,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:16:39,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:16:39,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-04 15:16:39,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-04 15:16:39,168 INFO L175 Difference]: Start difference. First operand has 257 places, 230 transitions, 2307 flow. Second operand 11 states and 120 transitions. [2024-06-04 15:16:39,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 257 transitions, 3108 flow [2024-06-04 15:16:39,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 257 transitions, 3000 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-04 15:16:39,461 INFO L231 Difference]: Finished difference. Result has 260 places, 234 transitions, 2333 flow [2024-06-04 15:16:39,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2199, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2333, PETRI_PLACES=260, PETRI_TRANSITIONS=234} [2024-06-04 15:16:39,461 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 229 predicate places. [2024-06-04 15:16:39,461 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 234 transitions, 2333 flow [2024-06-04 15:16:39,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:16:39,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:39,462 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 15:16:39,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-04 15:16:39,462 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 15:16:39,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:39,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1611440560, now seen corresponding path program 7 times [2024-06-04 15:16:39,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:39,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755680059] [2024-06-04 15:16:39,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:39,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:39,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:40,441 INFO 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 15:16:40,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:40,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755680059] [2024-06-04 15:16:40,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755680059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:40,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:40,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:16:40,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708968565] [2024-06-04 15:16:40,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:40,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:16:40,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:40,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:16:40,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:16:40,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:16:40,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 234 transitions, 2333 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:16:40,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:40,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:16:40,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:40,875 INFO L124 PetriNetUnfolderBase]: 636/1131 cut-off events. [2024-06-04 15:16:40,876 INFO L125 PetriNetUnfolderBase]: For 90781/90781 co-relation queries the response was YES. [2024-06-04 15:16:40,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7075 conditions, 1131 events. 636/1131 cut-off events. For 90781/90781 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5740 event pairs, 99 based on Foata normal form. 2/1132 useless extension candidates. Maximal degree in co-relation 6947. Up to 1018 conditions per place. [2024-06-04 15:16:40,886 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 221 selfloop transitions, 33 changer transitions 0/256 dead transitions. [2024-06-04 15:16:40,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 256 transitions, 2915 flow [2024-06-04 15:16:40,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:16:40,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:16:40,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-04 15:16:40,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3352272727272727 [2024-06-04 15:16:40,894 INFO L175 Difference]: Start difference. First operand has 260 places, 234 transitions, 2333 flow. Second operand 11 states and 118 transitions. [2024-06-04 15:16:40,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 256 transitions, 2915 flow [2024-06-04 15:16:41,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 256 transitions, 2811 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-04 15:16:41,197 INFO L231 Difference]: Finished difference. Result has 264 places, 234 transitions, 2299 flow [2024-06-04 15:16:41,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2229, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2299, PETRI_PLACES=264, PETRI_TRANSITIONS=234} [2024-06-04 15:16:41,198 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 233 predicate places. [2024-06-04 15:16:41,198 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 234 transitions, 2299 flow [2024-06-04 15:16:41,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:16:41,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:41,198 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 15:16:41,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-04 15:16:41,199 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 15:16:41,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:41,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1965781648, now seen corresponding path program 8 times [2024-06-04 15:16:41,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:41,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156851223] [2024-06-04 15:16:41,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:41,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:41,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:42,024 INFO 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 15:16:42,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:42,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156851223] [2024-06-04 15:16:42,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156851223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:42,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:42,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:16:42,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016855704] [2024-06-04 15:16:42,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:42,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:16:42,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:42,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:16:42,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:16:42,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:16:42,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 234 transitions, 2299 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:16:42,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:42,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:16:42,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:42,533 INFO L124 PetriNetUnfolderBase]: 685/1214 cut-off events. [2024-06-04 15:16:42,533 INFO L125 PetriNetUnfolderBase]: For 92706/92706 co-relation queries the response was YES. [2024-06-04 15:16:42,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7404 conditions, 1214 events. 685/1214 cut-off events. For 92706/92706 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6254 event pairs, 105 based on Foata normal form. 2/1215 useless extension candidates. Maximal degree in co-relation 7276. Up to 1037 conditions per place. [2024-06-04 15:16:42,542 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 221 selfloop transitions, 51 changer transitions 0/274 dead transitions. [2024-06-04 15:16:42,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 274 transitions, 3063 flow [2024-06-04 15:16:42,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:16:42,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:16:42,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-04 15:16:42,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 15:16:42,543 INFO L175 Difference]: Start difference. First operand has 264 places, 234 transitions, 2299 flow. Second operand 11 states and 121 transitions. [2024-06-04 15:16:42,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 274 transitions, 3063 flow [2024-06-04 15:16:42,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 274 transitions, 2983 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 15:16:42,842 INFO L231 Difference]: Finished difference. Result has 269 places, 250 transitions, 2533 flow [2024-06-04 15:16:42,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2219, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2533, PETRI_PLACES=269, PETRI_TRANSITIONS=250} [2024-06-04 15:16:42,843 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 238 predicate places. [2024-06-04 15:16:42,843 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 250 transitions, 2533 flow [2024-06-04 15:16:42,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:16:42,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:42,843 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 15:16:42,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-04 15:16:42,843 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 15:16:42,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:42,844 INFO L85 PathProgramCache]: Analyzing trace with hash 666528310, now seen corresponding path program 9 times [2024-06-04 15:16:42,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:42,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160558254] [2024-06-04 15:16:42,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:42,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:42,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:43,900 INFO 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 15:16:43,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:43,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160558254] [2024-06-04 15:16:43,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160558254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:43,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:43,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:16:43,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094490989] [2024-06-04 15:16:43,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:43,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:16:43,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:43,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:16:43,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:16:43,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:16:43,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 250 transitions, 2533 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:16:43,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:43,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:16:43,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:44,385 INFO L124 PetriNetUnfolderBase]: 693/1230 cut-off events. [2024-06-04 15:16:44,385 INFO L125 PetriNetUnfolderBase]: For 95225/95225 co-relation queries the response was YES. [2024-06-04 15:16:44,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7654 conditions, 1230 events. 693/1230 cut-off events. For 95225/95225 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6354 event pairs, 103 based on Foata normal form. 2/1231 useless extension candidates. Maximal degree in co-relation 7523. Up to 1039 conditions per place. [2024-06-04 15:16:44,397 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 222 selfloop transitions, 52 changer transitions 0/276 dead transitions. [2024-06-04 15:16:44,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 276 transitions, 3189 flow [2024-06-04 15:16:44,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:16:44,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:16:44,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-04 15:16:44,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-04 15:16:44,398 INFO L175 Difference]: Start difference. First operand has 269 places, 250 transitions, 2533 flow. Second operand 11 states and 122 transitions. [2024-06-04 15:16:44,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 276 transitions, 3189 flow [2024-06-04 15:16:44,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 276 transitions, 3112 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-04 15:16:44,705 INFO L231 Difference]: Finished difference. Result has 276 places, 252 transitions, 2597 flow [2024-06-04 15:16:44,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2456, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2597, PETRI_PLACES=276, PETRI_TRANSITIONS=252} [2024-06-04 15:16:44,706 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 245 predicate places. [2024-06-04 15:16:44,706 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 252 transitions, 2597 flow [2024-06-04 15:16:44,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:16:44,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:44,707 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 15:16:44,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-04 15:16:44,707 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 15:16:44,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:44,707 INFO L85 PathProgramCache]: Analyzing trace with hash 843664480, now seen corresponding path program 10 times [2024-06-04 15:16:44,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:44,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749652621] [2024-06-04 15:16:44,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:44,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:44,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:45,487 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 15:16:45,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:45,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749652621] [2024-06-04 15:16:45,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749652621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:45,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:45,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:16:45,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198856996] [2024-06-04 15:16:45,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:45,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:16:45,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:45,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:16:45,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:16:45,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:16:45,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 252 transitions, 2597 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:16:45,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:45,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:16:45,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:45,889 INFO L124 PetriNetUnfolderBase]: 697/1238 cut-off events. [2024-06-04 15:16:45,889 INFO L125 PetriNetUnfolderBase]: For 97836/97836 co-relation queries the response was YES. [2024-06-04 15:16:45,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7754 conditions, 1238 events. 697/1238 cut-off events. For 97836/97836 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6464 event pairs, 95 based on Foata normal form. 2/1239 useless extension candidates. Maximal degree in co-relation 7621. Up to 1061 conditions per place. [2024-06-04 15:16:45,901 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 217 selfloop transitions, 58 changer transitions 0/277 dead transitions. [2024-06-04 15:16:45,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 277 transitions, 3256 flow [2024-06-04 15:16:45,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:16:45,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:16:45,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-04 15:16:45,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-04 15:16:45,906 INFO L175 Difference]: Start difference. First operand has 276 places, 252 transitions, 2597 flow. Second operand 11 states and 119 transitions. [2024-06-04 15:16:45,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 277 transitions, 3256 flow [2024-06-04 15:16:46,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 277 transitions, 3138 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-04 15:16:46,235 INFO L231 Difference]: Finished difference. Result has 281 places, 258 transitions, 2698 flow [2024-06-04 15:16:46,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2479, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2698, PETRI_PLACES=281, PETRI_TRANSITIONS=258} [2024-06-04 15:16:46,236 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 250 predicate places. [2024-06-04 15:16:46,236 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 258 transitions, 2698 flow [2024-06-04 15:16:46,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:16:46,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:46,236 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 15:16:46,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-04 15:16:46,237 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 15:16:46,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:46,237 INFO L85 PathProgramCache]: Analyzing trace with hash 843910744, now seen corresponding path program 1 times [2024-06-04 15:16:46,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:46,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636597859] [2024-06-04 15:16:46,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:46,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:46,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:47,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:16:47,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:47,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636597859] [2024-06-04 15:16:47,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636597859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:47,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:47,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:16:47,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425562998] [2024-06-04 15:16:47,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:47,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:16:47,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:47,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:16:47,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:16:47,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:16:47,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 258 transitions, 2698 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:16:47,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:47,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:16:47,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:47,814 INFO L124 PetriNetUnfolderBase]: 707/1256 cut-off events. [2024-06-04 15:16:47,814 INFO L125 PetriNetUnfolderBase]: For 100020/100020 co-relation queries the response was YES. [2024-06-04 15:16:47,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7961 conditions, 1256 events. 707/1256 cut-off events. For 100020/100020 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6580 event pairs, 164 based on Foata normal form. 2/1257 useless extension candidates. Maximal degree in co-relation 7825. Up to 1212 conditions per place. [2024-06-04 15:16:47,825 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 254 selfloop transitions, 22 changer transitions 0/278 dead transitions. [2024-06-04 15:16:47,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 278 transitions, 3338 flow [2024-06-04 15:16:47,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:16:47,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:16:47,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 116 transitions. [2024-06-04 15:16:47,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3020833333333333 [2024-06-04 15:16:47,826 INFO L175 Difference]: Start difference. First operand has 281 places, 258 transitions, 2698 flow. Second operand 12 states and 116 transitions. [2024-06-04 15:16:47,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 278 transitions, 3338 flow [2024-06-04 15:16:48,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 278 transitions, 3257 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-04 15:16:48,181 INFO L231 Difference]: Finished difference. Result has 290 places, 263 transitions, 2733 flow [2024-06-04 15:16:48,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2617, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2733, PETRI_PLACES=290, PETRI_TRANSITIONS=263} [2024-06-04 15:16:48,182 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 259 predicate places. [2024-06-04 15:16:48,182 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 263 transitions, 2733 flow [2024-06-04 15:16:48,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:16:48,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:48,182 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 15:16:48,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-04 15:16:48,182 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 15:16:48,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:48,183 INFO L85 PathProgramCache]: Analyzing trace with hash 837235390, now seen corresponding path program 11 times [2024-06-04 15:16:48,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:48,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610701657] [2024-06-04 15:16:48,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:48,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:48,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:49,055 INFO 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 15:16:49,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:49,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610701657] [2024-06-04 15:16:49,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610701657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:49,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:49,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:16:49,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813586130] [2024-06-04 15:16:49,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:49,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:16:49,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:49,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:16:49,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:16:49,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:16:49,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 263 transitions, 2733 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:16:49,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:49,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:16:49,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:49,564 INFO L124 PetriNetUnfolderBase]: 711/1264 cut-off events. [2024-06-04 15:16:49,565 INFO L125 PetriNetUnfolderBase]: For 102089/102089 co-relation queries the response was YES. [2024-06-04 15:16:49,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7989 conditions, 1264 events. 711/1264 cut-off events. For 102089/102089 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6637 event pairs, 97 based on Foata normal form. 2/1265 useless extension candidates. Maximal degree in co-relation 7850. Up to 1087 conditions per place. [2024-06-04 15:16:49,577 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 226 selfloop transitions, 55 changer transitions 0/283 dead transitions. [2024-06-04 15:16:49,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 283 transitions, 3376 flow [2024-06-04 15:16:49,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:16:49,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:16:49,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-04 15:16:49,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-04 15:16:49,578 INFO L175 Difference]: Start difference. First operand has 290 places, 263 transitions, 2733 flow. Second operand 11 states and 120 transitions. [2024-06-04 15:16:49,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 283 transitions, 3376 flow [2024-06-04 15:16:49,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 283 transitions, 3277 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-04 15:16:49,993 INFO L231 Difference]: Finished difference. Result has 293 places, 264 transitions, 2776 flow [2024-06-04 15:16:49,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2634, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2776, PETRI_PLACES=293, PETRI_TRANSITIONS=264} [2024-06-04 15:16:49,993 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 262 predicate places. [2024-06-04 15:16:49,993 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 264 transitions, 2776 flow [2024-06-04 15:16:49,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:16:49,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:49,994 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 15:16:49,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-04 15:16:49,994 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 15:16:49,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:49,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1965901618, now seen corresponding path program 12 times [2024-06-04 15:16:49,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:49,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793816949] [2024-06-04 15:16:49,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:49,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:50,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:50,714 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 15:16:50,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:50,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793816949] [2024-06-04 15:16:50,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793816949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:50,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:50,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:16:50,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53000142] [2024-06-04 15:16:50,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:50,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:16:50,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:50,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:16:50,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:16:50,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:16:50,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 264 transitions, 2776 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:50,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:50,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:16:50,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:51,162 INFO L124 PetriNetUnfolderBase]: 734/1309 cut-off events. [2024-06-04 15:16:51,163 INFO L125 PetriNetUnfolderBase]: For 113148/113148 co-relation queries the response was YES. [2024-06-04 15:16:51,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8448 conditions, 1309 events. 734/1309 cut-off events. For 113148/113148 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6965 event pairs, 114 based on Foata normal form. 2/1310 useless extension candidates. Maximal degree in co-relation 8310. Up to 1067 conditions per place. [2024-06-04 15:16:51,180 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 231 selfloop transitions, 56 changer transitions 0/289 dead transitions. [2024-06-04 15:16:51,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 289 transitions, 3653 flow [2024-06-04 15:16:51,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:16:51,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:16:51,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-04 15:16:51,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-04 15:16:51,181 INFO L175 Difference]: Start difference. First operand has 293 places, 264 transitions, 2776 flow. Second operand 11 states and 122 transitions. [2024-06-04 15:16:51,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 289 transitions, 3653 flow [2024-06-04 15:16:51,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 289 transitions, 3530 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-04 15:16:51,558 INFO L231 Difference]: Finished difference. Result has 299 places, 268 transitions, 2852 flow [2024-06-04 15:16:51,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2653, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2852, PETRI_PLACES=299, PETRI_TRANSITIONS=268} [2024-06-04 15:16:51,559 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 268 predicate places. [2024-06-04 15:16:51,559 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 268 transitions, 2852 flow [2024-06-04 15:16:51,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:51,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:51,559 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 15:16:51,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-04 15:16:51,560 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 15:16:51,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:51,560 INFO L85 PathProgramCache]: Analyzing trace with hash 837230740, now seen corresponding path program 13 times [2024-06-04 15:16:51,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:51,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772233072] [2024-06-04 15:16:51,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:51,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:51,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:52,486 INFO 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 15:16:52,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:52,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772233072] [2024-06-04 15:16:52,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772233072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:52,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:52,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:16:52,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187912039] [2024-06-04 15:16:52,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:52,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:16:52,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:52,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:16:52,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:16:52,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:16:52,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 268 transitions, 2852 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:16:52,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:52,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:16:52,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:52,932 INFO L124 PetriNetUnfolderBase]: 731/1304 cut-off events. [2024-06-04 15:16:52,932 INFO L125 PetriNetUnfolderBase]: For 106955/106955 co-relation queries the response was YES. [2024-06-04 15:16:52,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8269 conditions, 1304 events. 731/1304 cut-off events. For 106955/106955 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6943 event pairs, 103 based on Foata normal form. 2/1305 useless extension candidates. Maximal degree in co-relation 8128. Up to 1107 conditions per place. [2024-06-04 15:16:52,945 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 229 selfloop transitions, 57 changer transitions 0/288 dead transitions. [2024-06-04 15:16:52,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 288 transitions, 3480 flow [2024-06-04 15:16:52,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:16:52,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:16:52,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-04 15:16:52,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-04 15:16:52,947 INFO L175 Difference]: Start difference. First operand has 299 places, 268 transitions, 2852 flow. Second operand 11 states and 120 transitions. [2024-06-04 15:16:52,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 288 transitions, 3480 flow [2024-06-04 15:16:53,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 288 transitions, 3375 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-04 15:16:53,355 INFO L231 Difference]: Finished difference. Result has 305 places, 269 transitions, 2876 flow [2024-06-04 15:16:53,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2747, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2876, PETRI_PLACES=305, PETRI_TRANSITIONS=269} [2024-06-04 15:16:53,355 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 274 predicate places. [2024-06-04 15:16:53,356 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 269 transitions, 2876 flow [2024-06-04 15:16:53,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:16:53,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:53,356 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 15:16:53,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-04 15:16:53,356 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 15:16:53,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:53,357 INFO L85 PathProgramCache]: Analyzing trace with hash -636296328, now seen corresponding path program 14 times [2024-06-04 15:16:53,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:53,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205008980] [2024-06-04 15:16:53,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:53,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:53,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:54,199 INFO 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 15:16:54,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:54,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205008980] [2024-06-04 15:16:54,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205008980] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:54,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:54,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:16:54,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095224406] [2024-06-04 15:16:54,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:54,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:16:54,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:54,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:16:54,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:16:54,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:16:54,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 269 transitions, 2876 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:16:54,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:54,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:16:54,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:54,685 INFO L124 PetriNetUnfolderBase]: 735/1312 cut-off events. [2024-06-04 15:16:54,685 INFO L125 PetriNetUnfolderBase]: For 108984/108984 co-relation queries the response was YES. [2024-06-04 15:16:54,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8411 conditions, 1312 events. 735/1312 cut-off events. For 108984/108984 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 7010 event pairs, 131 based on Foata normal form. 2/1313 useless extension candidates. Maximal degree in co-relation 8267. Up to 1017 conditions per place. [2024-06-04 15:16:54,699 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 226 selfloop transitions, 59 changer transitions 0/287 dead transitions. [2024-06-04 15:16:54,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 287 transitions, 3518 flow [2024-06-04 15:16:54,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:16:54,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:16:54,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-04 15:16:54,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-04 15:16:54,700 INFO L175 Difference]: Start difference. First operand has 305 places, 269 transitions, 2876 flow. Second operand 10 states and 108 transitions. [2024-06-04 15:16:54,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 287 transitions, 3518 flow [2024-06-04 15:16:55,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 287 transitions, 3404 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-04 15:16:55,131 INFO L231 Difference]: Finished difference. Result has 307 places, 270 transitions, 2920 flow [2024-06-04 15:16:55,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2762, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2920, PETRI_PLACES=307, PETRI_TRANSITIONS=270} [2024-06-04 15:16:55,132 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 276 predicate places. [2024-06-04 15:16:55,132 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 270 transitions, 2920 flow [2024-06-04 15:16:55,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:16:55,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:55,132 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 15:16:55,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-04 15:16:55,132 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 15:16:55,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:55,133 INFO L85 PathProgramCache]: Analyzing trace with hash 985245378, now seen corresponding path program 15 times [2024-06-04 15:16:55,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:55,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611997320] [2024-06-04 15:16:55,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:55,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:55,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:56,040 INFO 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 15:16:56,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:56,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611997320] [2024-06-04 15:16:56,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611997320] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:56,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:56,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:16:56,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666204687] [2024-06-04 15:16:56,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:56,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:16:56,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:56,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:16:56,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:16:56,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:16:56,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 270 transitions, 2920 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:16:56,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:56,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:16:56,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:56,522 INFO L124 PetriNetUnfolderBase]: 739/1322 cut-off events. [2024-06-04 15:16:56,522 INFO L125 PetriNetUnfolderBase]: For 111776/111776 co-relation queries the response was YES. [2024-06-04 15:16:56,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8543 conditions, 1322 events. 739/1322 cut-off events. For 111776/111776 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7073 event pairs, 98 based on Foata normal form. 2/1323 useless extension candidates. Maximal degree in co-relation 8398. Up to 1055 conditions per place. [2024-06-04 15:16:56,536 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 206 selfloop transitions, 79 changer transitions 0/287 dead transitions. [2024-06-04 15:16:56,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 287 transitions, 3566 flow [2024-06-04 15:16:56,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:16:56,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:16:56,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-04 15:16:56,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-04 15:16:56,538 INFO L175 Difference]: Start difference. First operand has 307 places, 270 transitions, 2920 flow. Second operand 10 states and 109 transitions. [2024-06-04 15:16:56,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 287 transitions, 3566 flow [2024-06-04 15:16:56,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 287 transitions, 3422 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-04 15:16:57,000 INFO L231 Difference]: Finished difference. Result has 307 places, 271 transitions, 2974 flow [2024-06-04 15:16:57,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2776, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2974, PETRI_PLACES=307, PETRI_TRANSITIONS=271} [2024-06-04 15:16:57,000 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 276 predicate places. [2024-06-04 15:16:57,001 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 271 transitions, 2974 flow [2024-06-04 15:16:57,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:16:57,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:57,001 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 15:16:57,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-04 15:16:57,001 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 15:16:57,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:57,002 INFO L85 PathProgramCache]: Analyzing trace with hash 985240728, now seen corresponding path program 16 times [2024-06-04 15:16:57,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:57,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486631974] [2024-06-04 15:16:57,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:57,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:57,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:57,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:16:57,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:57,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486631974] [2024-06-04 15:16:57,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486631974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:57,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:57,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:16:57,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371361285] [2024-06-04 15:16:57,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:57,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:16:57,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:57,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:16:57,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:16:57,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:16:57,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 271 transitions, 2974 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:16:57,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:57,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:16:57,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:58,263 INFO L124 PetriNetUnfolderBase]: 750/1341 cut-off events. [2024-06-04 15:16:58,263 INFO L125 PetriNetUnfolderBase]: For 119222/119222 co-relation queries the response was YES. [2024-06-04 15:16:58,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8916 conditions, 1341 events. 750/1341 cut-off events. For 119222/119222 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7225 event pairs, 99 based on Foata normal form. 2/1342 useless extension candidates. Maximal degree in co-relation 8772. Up to 1033 conditions per place. [2024-06-04 15:16:58,277 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 205 selfloop transitions, 83 changer transitions 0/290 dead transitions. [2024-06-04 15:16:58,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 290 transitions, 3850 flow [2024-06-04 15:16:58,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:16:58,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:16:58,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-04 15:16:58,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 15:16:58,278 INFO L175 Difference]: Start difference. First operand has 307 places, 271 transitions, 2974 flow. Second operand 10 states and 110 transitions. [2024-06-04 15:16:58,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 290 transitions, 3850 flow [2024-06-04 15:16:58,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 290 transitions, 3660 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-04 15:16:58,753 INFO L231 Difference]: Finished difference. Result has 309 places, 273 transitions, 3028 flow [2024-06-04 15:16:58,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2790, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3028, PETRI_PLACES=309, PETRI_TRANSITIONS=273} [2024-06-04 15:16:58,753 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 278 predicate places. [2024-06-04 15:16:58,753 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 273 transitions, 3028 flow [2024-06-04 15:16:58,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:16:58,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:58,754 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 15:16:58,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-04 15:16:58,754 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 15:16:58,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:58,754 INFO L85 PathProgramCache]: Analyzing trace with hash 991674468, now seen corresponding path program 17 times [2024-06-04 15:16:58,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:58,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267464416] [2024-06-04 15:16:58,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:58,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:58,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:59,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:16:59,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:59,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267464416] [2024-06-04 15:16:59,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267464416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:59,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:59,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:16:59,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355742428] [2024-06-04 15:16:59,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:59,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:16:59,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:59,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:16:59,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:16:59,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:16:59,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 273 transitions, 3028 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:16:59,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:59,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:16:59,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:17:00,062 INFO L124 PetriNetUnfolderBase]: 747/1336 cut-off events. [2024-06-04 15:17:00,062 INFO L125 PetriNetUnfolderBase]: For 109960/109960 co-relation queries the response was YES. [2024-06-04 15:17:00,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8655 conditions, 1336 events. 747/1336 cut-off events. For 109960/109960 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7181 event pairs, 98 based on Foata normal form. 2/1337 useless extension candidates. Maximal degree in co-relation 8510. Up to 1071 conditions per place. [2024-06-04 15:17:00,077 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 202 selfloop transitions, 85 changer transitions 0/289 dead transitions. [2024-06-04 15:17:00,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 289 transitions, 3646 flow [2024-06-04 15:17:00,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:17:00,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:17:00,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-04 15:17:00,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-04 15:17:00,078 INFO L175 Difference]: Start difference. First operand has 309 places, 273 transitions, 3028 flow. Second operand 10 states and 108 transitions. [2024-06-04 15:17:00,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 289 transitions, 3646 flow [2024-06-04 15:17:00,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 289 transitions, 3486 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-04 15:17:00,489 INFO L231 Difference]: Finished difference. Result has 311 places, 273 transitions, 3044 flow [2024-06-04 15:17:00,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2868, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3044, PETRI_PLACES=311, PETRI_TRANSITIONS=273} [2024-06-04 15:17:00,489 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 280 predicate places. [2024-06-04 15:17:00,489 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 273 transitions, 3044 flow [2024-06-04 15:17:00,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:17:00,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:17:00,490 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 15:17:00,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-04 15:17:00,504 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 15:17:00,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:17:00,505 INFO L85 PathProgramCache]: Analyzing trace with hash 991920732, now seen corresponding path program 2 times [2024-06-04 15:17:00,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:17:00,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137150072] [2024-06-04 15:17:00,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:17:00,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:17:00,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:17:01,498 INFO 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 15:17:01,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:17:01,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137150072] [2024-06-04 15:17:01,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137150072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:17:01,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:17:01,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:17:01,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124054730] [2024-06-04 15:17:01,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:17:01,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:17:01,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:17:01,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:17:01,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:17:01,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:17:01,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 273 transitions, 3044 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:17:01,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:17:01,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:17:01,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:17:01,956 INFO L124 PetriNetUnfolderBase]: 751/1344 cut-off events. [2024-06-04 15:17:01,957 INFO L125 PetriNetUnfolderBase]: For 109166/109166 co-relation queries the response was YES. [2024-06-04 15:17:01,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8768 conditions, 1344 events. 751/1344 cut-off events. For 109166/109166 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7258 event pairs, 174 based on Foata normal form. 2/1345 useless extension candidates. Maximal degree in co-relation 8623. Up to 1279 conditions per place. [2024-06-04 15:17:01,972 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 254 selfloop transitions, 32 changer transitions 0/288 dead transitions. [2024-06-04 15:17:01,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 288 transitions, 3678 flow [2024-06-04 15:17:01,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:17:01,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:17:01,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-04 15:17:01,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3039772727272727 [2024-06-04 15:17:01,973 INFO L175 Difference]: Start difference. First operand has 311 places, 273 transitions, 3044 flow. Second operand 11 states and 107 transitions. [2024-06-04 15:17:01,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 288 transitions, 3678 flow [2024-06-04 15:17:02,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 288 transitions, 3498 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-04 15:17:02,374 INFO L231 Difference]: Finished difference. Result has 314 places, 275 transitions, 2976 flow [2024-06-04 15:17:02,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2864, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2976, PETRI_PLACES=314, PETRI_TRANSITIONS=275} [2024-06-04 15:17:02,375 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 283 predicate places. [2024-06-04 15:17:02,375 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 275 transitions, 2976 flow [2024-06-04 15:17:02,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:17:02,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:17:02,375 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 15:17:02,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-04 15:17:02,376 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 15:17:02,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:17:02,376 INFO L85 PathProgramCache]: Analyzing trace with hash 814542948, now seen corresponding path program 18 times [2024-06-04 15:17:02,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:17:02,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571703672] [2024-06-04 15:17:02,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:17:02,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:17:02,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:17:03,274 INFO 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 15:17:03,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:17:03,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571703672] [2024-06-04 15:17:03,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571703672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:17:03,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:17:03,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:17:03,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951403022] [2024-06-04 15:17:03,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:17:03,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:17:03,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:17:03,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:17:03,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:17:03,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:17:03,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 275 transitions, 2976 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:17:03,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:17:03,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:17:03,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:17:03,795 INFO L124 PetriNetUnfolderBase]: 755/1352 cut-off events. [2024-06-04 15:17:03,796 INFO L125 PetriNetUnfolderBase]: For 111459/111459 co-relation queries the response was YES. [2024-06-04 15:17:03,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8733 conditions, 1352 events. 755/1352 cut-off events. For 111459/111459 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 7308 event pairs, 116 based on Foata normal form. 2/1353 useless extension candidates. Maximal degree in co-relation 8586. Up to 1087 conditions per place. [2024-06-04 15:17:03,810 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 217 selfloop transitions, 73 changer transitions 0/292 dead transitions. [2024-06-04 15:17:03,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 292 transitions, 3634 flow [2024-06-04 15:17:03,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:17:03,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:17:03,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-04 15:17:03,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 15:17:03,811 INFO L175 Difference]: Start difference. First operand has 314 places, 275 transitions, 2976 flow. Second operand 10 states and 110 transitions. [2024-06-04 15:17:03,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 292 transitions, 3634 flow [2024-06-04 15:17:04,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 292 transitions, 3554 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-04 15:17:04,554 INFO L231 Difference]: Finished difference. Result has 316 places, 276 transitions, 3084 flow [2024-06-04 15:17:04,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2896, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3084, PETRI_PLACES=316, PETRI_TRANSITIONS=276} [2024-06-04 15:17:04,555 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 285 predicate places. [2024-06-04 15:17:04,555 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 276 transitions, 3084 flow [2024-06-04 15:17:04,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:17:04,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:17:04,556 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 15:17:04,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-04 15:17:04,556 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 15:17:04,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:17:04,556 INFO L85 PathProgramCache]: Analyzing trace with hash 814538298, now seen corresponding path program 19 times [2024-06-04 15:17:04,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:17:04,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183332796] [2024-06-04 15:17:04,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:17:04,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:17:04,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:17:05,459 INFO 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 15:17:05,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:17:05,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183332796] [2024-06-04 15:17:05,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183332796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:17:05,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:17:05,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:17:05,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523704969] [2024-06-04 15:17:05,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:17:05,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:17:05,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:17:05,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:17:05,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:17:05,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:17:05,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 276 transitions, 3084 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:17:05,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:17:05,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:17:05,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:17:06,057 INFO L124 PetriNetUnfolderBase]: 759/1360 cut-off events. [2024-06-04 15:17:06,057 INFO L125 PetriNetUnfolderBase]: For 112203/112203 co-relation queries the response was YES. [2024-06-04 15:17:06,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8899 conditions, 1360 events. 759/1360 cut-off events. For 112203/112203 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7376 event pairs, 114 based on Foata normal form. 2/1361 useless extension candidates. Maximal degree in co-relation 8751. Up to 1067 conditions per place. [2024-06-04 15:17:06,070 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 216 selfloop transitions, 75 changer transitions 0/293 dead transitions. [2024-06-04 15:17:06,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 293 transitions, 3744 flow [2024-06-04 15:17:06,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:17:06,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:17:06,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-04 15:17:06,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-04 15:17:06,072 INFO L175 Difference]: Start difference. First operand has 316 places, 276 transitions, 3084 flow. Second operand 10 states and 111 transitions. [2024-06-04 15:17:06,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 293 transitions, 3744 flow [2024-06-04 15:17:06,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 293 transitions, 3568 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-04 15:17:06,550 INFO L231 Difference]: Finished difference. Result has 318 places, 277 transitions, 3102 flow [2024-06-04 15:17:06,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2910, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3102, PETRI_PLACES=318, PETRI_TRANSITIONS=277} [2024-06-04 15:17:06,556 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 287 predicate places. [2024-06-04 15:17:06,556 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 277 transitions, 3102 flow [2024-06-04 15:17:06,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:17:06,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:17:06,557 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 15:17:06,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-04 15:17:06,557 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 15:17:06,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:17:06,557 INFO L85 PathProgramCache]: Analyzing trace with hash 814422978, now seen corresponding path program 20 times [2024-06-04 15:17:06,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:17:06,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212730841] [2024-06-04 15:17:06,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:17:06,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:17:06,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:17:07,379 INFO 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 15:17:07,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:17:07,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212730841] [2024-06-04 15:17:07,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212730841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:17:07,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:17:07,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:17:07,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090427513] [2024-06-04 15:17:07,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:17:07,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:17:07,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:17:07,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:17:07,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:17:07,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:17:07,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 277 transitions, 3102 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:17:07,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:17:07,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:17:07,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:17:07,835 INFO L124 PetriNetUnfolderBase]: 763/1368 cut-off events. [2024-06-04 15:17:07,836 INFO L125 PetriNetUnfolderBase]: For 112396/112396 co-relation queries the response was YES. [2024-06-04 15:17:07,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8944 conditions, 1368 events. 763/1368 cut-off events. For 112396/112396 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7437 event pairs, 118 based on Foata normal form. 2/1369 useless extension candidates. Maximal degree in co-relation 8795. Up to 979 conditions per place. [2024-06-04 15:17:07,850 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 209 selfloop transitions, 83 changer transitions 0/294 dead transitions. [2024-06-04 15:17:07,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 294 transitions, 3762 flow [2024-06-04 15:17:07,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:17:07,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:17:07,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-04 15:17:07,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 15:17:07,854 INFO L175 Difference]: Start difference. First operand has 318 places, 277 transitions, 3102 flow. Second operand 10 states and 110 transitions. [2024-06-04 15:17:07,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 294 transitions, 3762 flow [2024-06-04 15:17:08,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 294 transitions, 3578 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-04 15:17:08,332 INFO L231 Difference]: Finished difference. Result has 319 places, 278 transitions, 3128 flow [2024-06-04 15:17:08,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2920, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3128, PETRI_PLACES=319, PETRI_TRANSITIONS=278} [2024-06-04 15:17:08,332 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 288 predicate places. [2024-06-04 15:17:08,333 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 278 transitions, 3128 flow [2024-06-04 15:17:08,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:17:08,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:17:08,333 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 15:17:08,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-04 15:17:08,333 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 15:17:08,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:17:08,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1250663200, now seen corresponding path program 21 times [2024-06-04 15:17:08,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:17:08,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432956637] [2024-06-04 15:17:08,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:17:08,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:17:08,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:17:09,117 INFO 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 15:17:09,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:17:09,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432956637] [2024-06-04 15:17:09,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432956637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:17:09,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:17:09,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:17:09,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379124282] [2024-06-04 15:17:09,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:17:09,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:17:09,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:17:09,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:17:09,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:17:09,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:17:09,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 278 transitions, 3128 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:17:09,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:17:09,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:17:09,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:17:09,561 INFO L124 PetriNetUnfolderBase]: 767/1376 cut-off events. [2024-06-04 15:17:09,561 INFO L125 PetriNetUnfolderBase]: For 112462/112462 co-relation queries the response was YES. [2024-06-04 15:17:09,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9008 conditions, 1376 events. 767/1376 cut-off events. For 112462/112462 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7490 event pairs, 111 based on Foata normal form. 2/1374 useless extension candidates. Maximal degree in co-relation 8859. Up to 1022 conditions per place. [2024-06-04 15:17:09,576 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 204 selfloop transitions, 88 changer transitions 0/294 dead transitions. [2024-06-04 15:17:09,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 294 transitions, 3790 flow [2024-06-04 15:17:09,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:17:09,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:17:09,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-04 15:17:09,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-04 15:17:09,577 INFO L175 Difference]: Start difference. First operand has 319 places, 278 transitions, 3128 flow. Second operand 10 states and 114 transitions. [2024-06-04 15:17:09,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 294 transitions, 3790 flow [2024-06-04 15:17:10,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 294 transitions, 3590 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-04 15:17:10,027 INFO L231 Difference]: Finished difference. Result has 319 places, 279 transitions, 3146 flow [2024-06-04 15:17:10,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2928, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3146, PETRI_PLACES=319, PETRI_TRANSITIONS=279} [2024-06-04 15:17:10,027 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 288 predicate places. [2024-06-04 15:17:10,027 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 279 transitions, 3146 flow [2024-06-04 15:17:10,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:17:10,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:17:10,028 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 15:17:10,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-04 15:17:10,028 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 15:17:10,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:17:10,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1253284326, now seen corresponding path program 22 times [2024-06-04 15:17:10,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:17:10,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130551563] [2024-06-04 15:17:10,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:17:10,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:17:10,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:17:10,939 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 15:17:10,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:17:10,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130551563] [2024-06-04 15:17:10,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130551563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:17:10,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:17:10,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:17:10,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450252593] [2024-06-04 15:17:10,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:17:10,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:17:10,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:17:10,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:17:10,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:17:11,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:17:11,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 279 transitions, 3146 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:17:11,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:17:11,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:17:11,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:17:11,415 INFO L124 PetriNetUnfolderBase]: 778/1397 cut-off events. [2024-06-04 15:17:11,416 INFO L125 PetriNetUnfolderBase]: For 122434/122434 co-relation queries the response was YES. [2024-06-04 15:17:11,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9360 conditions, 1397 events. 778/1397 cut-off events. For 122434/122434 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7659 event pairs, 112 based on Foata normal form. 2/1395 useless extension candidates. Maximal degree in co-relation 9212. Up to 1020 conditions per place. [2024-06-04 15:17:11,431 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 205 selfloop transitions, 90 changer transitions 0/297 dead transitions. [2024-06-04 15:17:11,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 297 transitions, 4044 flow [2024-06-04 15:17:11,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:17:11,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:17:11,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-04 15:17:11,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-04 15:17:11,432 INFO L175 Difference]: Start difference. First operand has 319 places, 279 transitions, 3146 flow. Second operand 10 states and 115 transitions. [2024-06-04 15:17:11,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 297 transitions, 4044 flow [2024-06-04 15:17:12,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 297 transitions, 3836 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-04 15:17:12,037 INFO L231 Difference]: Finished difference. Result has 321 places, 281 transitions, 3200 flow [2024-06-04 15:17:12,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2938, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3200, PETRI_PLACES=321, PETRI_TRANSITIONS=281} [2024-06-04 15:17:12,038 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 290 predicate places. [2024-06-04 15:17:12,038 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 281 transitions, 3200 flow [2024-06-04 15:17:12,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:17:12,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:17:12,038 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 15:17:12,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-04 15:17:12,039 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 15:17:12,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:17:12,039 INFO L85 PathProgramCache]: Analyzing trace with hash 2101580298, now seen corresponding path program 23 times [2024-06-04 15:17:12,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:17:12,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434512420] [2024-06-04 15:17:12,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:17:12,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:17:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:17:13,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:17:13,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:17:13,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434512420] [2024-06-04 15:17:13,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434512420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:17:13,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:17:13,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:17:13,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072881189] [2024-06-04 15:17:13,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:17:13,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:17:13,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:17:13,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:17:13,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:17:13,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:17:13,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 281 transitions, 3200 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:17:13,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:17:13,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:17:13,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:17:13,441 INFO L124 PetriNetUnfolderBase]: 782/1405 cut-off events. [2024-06-04 15:17:13,442 INFO L125 PetriNetUnfolderBase]: For 125175/125175 co-relation queries the response was YES. [2024-06-04 15:17:13,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9431 conditions, 1405 events. 782/1405 cut-off events. For 125175/125175 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7720 event pairs, 89 based on Foata normal form. 2/1403 useless extension candidates. Maximal degree in co-relation 9282. Up to 1051 conditions per place. [2024-06-04 15:17:13,457 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 183 selfloop transitions, 111 changer transitions 0/296 dead transitions. [2024-06-04 15:17:13,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 296 transitions, 3866 flow [2024-06-04 15:17:13,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:17:13,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:17:13,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-04 15:17:13,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-04 15:17:13,458 INFO L175 Difference]: Start difference. First operand has 321 places, 281 transitions, 3200 flow. Second operand 10 states and 109 transitions. [2024-06-04 15:17:13,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 296 transitions, 3866 flow [2024-06-04 15:17:13,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 296 transitions, 3715 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-04 15:17:13,959 INFO L231 Difference]: Finished difference. Result has 325 places, 282 transitions, 3317 flow [2024-06-04 15:17:13,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3049, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3317, PETRI_PLACES=325, PETRI_TRANSITIONS=282} [2024-06-04 15:17:13,959 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 294 predicate places. [2024-06-04 15:17:13,960 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 282 transitions, 3317 flow [2024-06-04 15:17:13,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:17:13,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:17:13,960 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 15:17:13,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-04 15:17:13,960 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 15:17:13,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:17:13,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1880172842, now seen corresponding path program 1 times [2024-06-04 15:17:13,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:17:13,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662442146] [2024-06-04 15:17:13,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:17:13,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:17:13,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:17:14,715 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 15:17:14,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:17:14,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662442146] [2024-06-04 15:17:14,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662442146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:17:14,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:17:14,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:17:14,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707623491] [2024-06-04 15:17:14,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:17:14,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:17:14,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:17:14,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:17:14,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:17:14,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:17:14,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 282 transitions, 3317 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:17:14,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:17:14,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:17:14,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:17:15,118 INFO L124 PetriNetUnfolderBase]: 778/1399 cut-off events. [2024-06-04 15:17:15,119 INFO L125 PetriNetUnfolderBase]: For 117161/117161 co-relation queries the response was YES. [2024-06-04 15:17:15,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9391 conditions, 1399 events. 778/1399 cut-off events. For 117161/117161 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7706 event pairs, 99 based on Foata normal form. 2/1397 useless extension candidates. Maximal degree in co-relation 9240. Up to 872 conditions per place. [2024-06-04 15:17:15,135 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 176 selfloop transitions, 119 changer transitions 0/297 dead transitions. [2024-06-04 15:17:15,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 297 transitions, 3951 flow [2024-06-04 15:17:15,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:17:15,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:17:15,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-04 15:17:15,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-04 15:17:15,137 INFO L175 Difference]: Start difference. First operand has 325 places, 282 transitions, 3317 flow. Second operand 10 states and 117 transitions. [2024-06-04 15:17:15,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 297 transitions, 3951 flow [2024-06-04 15:17:15,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 297 transitions, 3679 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-04 15:17:15,691 INFO L231 Difference]: Finished difference. Result has 327 places, 282 transitions, 3293 flow [2024-06-04 15:17:15,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3045, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3293, PETRI_PLACES=327, PETRI_TRANSITIONS=282} [2024-06-04 15:17:15,692 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 296 predicate places. [2024-06-04 15:17:15,692 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 282 transitions, 3293 flow [2024-06-04 15:17:15,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:17:15,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:17:15,692 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 15:17:15,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-04 15:17:15,692 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 15:17:15,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:17:15,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1991661260, now seen corresponding path program 24 times [2024-06-04 15:17:15,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:17:15,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901671262] [2024-06-04 15:17:15,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:17:15,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:17:15,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:17:16,495 INFO 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 15:17:16,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:17:16,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901671262] [2024-06-04 15:17:16,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901671262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:17:16,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:17:16,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:17:16,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329786958] [2024-06-04 15:17:16,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:17:16,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:17:16,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:17:16,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:17:16,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:17:16,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:17:16,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 282 transitions, 3293 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:17:16,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:17:16,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:17:16,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:17:16,888 INFO L124 PetriNetUnfolderBase]: 775/1394 cut-off events. [2024-06-04 15:17:16,889 INFO L125 PetriNetUnfolderBase]: For 109393/109393 co-relation queries the response was YES. [2024-06-04 15:17:16,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9100 conditions, 1394 events. 775/1394 cut-off events. For 109393/109393 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7660 event pairs, 111 based on Foata normal form. 2/1392 useless extension candidates. Maximal degree in co-relation 8948. Up to 1040 conditions per place. [2024-06-04 15:17:16,905 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 206 selfloop transitions, 89 changer transitions 0/297 dead transitions. [2024-06-04 15:17:16,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 297 transitions, 3925 flow [2024-06-04 15:17:16,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:17:16,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:17:16,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-04 15:17:16,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-04 15:17:16,906 INFO L175 Difference]: Start difference. First operand has 327 places, 282 transitions, 3293 flow. Second operand 10 states and 113 transitions. [2024-06-04 15:17:16,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 297 transitions, 3925 flow [2024-06-04 15:17:17,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 297 transitions, 3619 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-04 15:17:17,437 INFO L231 Difference]: Finished difference. Result has 327 places, 282 transitions, 3169 flow [2024-06-04 15:17:17,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2987, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3169, PETRI_PLACES=327, PETRI_TRANSITIONS=282} [2024-06-04 15:17:17,437 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 296 predicate places. [2024-06-04 15:17:17,438 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 282 transitions, 3169 flow [2024-06-04 15:17:17,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:17:17,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:17:17,438 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 15:17:17,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-04 15:17:17,438 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 15:17:17,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:17:17,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1961334314, now seen corresponding path program 25 times [2024-06-04 15:17:17,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:17:17,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239842338] [2024-06-04 15:17:17,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:17:17,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:17:17,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:17:18,333 INFO 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 15:17:18,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:17:18,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239842338] [2024-06-04 15:17:18,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239842338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:17:18,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:17:18,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:17:18,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820064806] [2024-06-04 15:17:18,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:17:18,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:17:18,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:17:18,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:17:18,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:17:18,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:17:18,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 282 transitions, 3169 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:17:18,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:17:18,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:17:18,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:17:18,757 INFO L124 PetriNetUnfolderBase]: 779/1402 cut-off events. [2024-06-04 15:17:18,757 INFO L125 PetriNetUnfolderBase]: For 109734/109734 co-relation queries the response was YES. [2024-06-04 15:17:18,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9047 conditions, 1402 events. 779/1402 cut-off events. For 109734/109734 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7720 event pairs, 91 based on Foata normal form. 2/1400 useless extension candidates. Maximal degree in co-relation 8894. Up to 1048 conditions per place. [2024-06-04 15:17:18,772 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 198 selfloop transitions, 98 changer transitions 0/298 dead transitions. [2024-06-04 15:17:18,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 298 transitions, 3845 flow [2024-06-04 15:17:18,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:17:18,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:17:18,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-04 15:17:18,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-04 15:17:18,774 INFO L175 Difference]: Start difference. First operand has 327 places, 282 transitions, 3169 flow. Second operand 10 states and 112 transitions. [2024-06-04 15:17:18,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 298 transitions, 3845 flow [2024-06-04 15:17:19,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 298 transitions, 3661 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-04 15:17:19,213 INFO L231 Difference]: Finished difference. Result has 328 places, 283 transitions, 3229 flow [2024-06-04 15:17:19,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2985, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3229, PETRI_PLACES=328, PETRI_TRANSITIONS=283} [2024-06-04 15:17:19,213 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 297 predicate places. [2024-06-04 15:17:19,213 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 283 transitions, 3229 flow [2024-06-04 15:17:19,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:17:19,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:17:19,214 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 15:17:19,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-04 15:17:19,214 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 15:17:19,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:17:19,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1991907524, now seen corresponding path program 3 times [2024-06-04 15:17:19,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:17:19,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106822653] [2024-06-04 15:17:19,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:17:19,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:17:19,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:17:20,175 INFO 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 15:17:20,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:17:20,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106822653] [2024-06-04 15:17:20,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106822653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:17:20,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:17:20,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:17:20,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919842796] [2024-06-04 15:17:20,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:17:20,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:17:20,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:17:20,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:17:20,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:17:20,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:17:20,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 283 transitions, 3229 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:17:20,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:17:20,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:17:20,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:17:20,646 INFO L124 PetriNetUnfolderBase]: 799/1446 cut-off events. [2024-06-04 15:17:20,647 INFO L125 PetriNetUnfolderBase]: For 160452/160452 co-relation queries the response was YES. [2024-06-04 15:17:20,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9272 conditions, 1446 events. 799/1446 cut-off events. For 160452/160452 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7995 event pairs, 126 based on Foata normal form. 12/1454 useless extension candidates. Maximal degree in co-relation 9118. Up to 867 conditions per place. [2024-06-04 15:17:20,663 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 187 selfloop transitions, 106 changer transitions 10/305 dead transitions. [2024-06-04 15:17:20,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 305 transitions, 3937 flow [2024-06-04 15:17:20,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:17:20,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:17:20,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-04 15:17:20,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-04 15:17:20,664 INFO L175 Difference]: Start difference. First operand has 328 places, 283 transitions, 3229 flow. Second operand 11 states and 130 transitions. [2024-06-04 15:17:20,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 305 transitions, 3937 flow [2024-06-04 15:17:21,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 305 transitions, 3703 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-04 15:17:21,156 INFO L231 Difference]: Finished difference. Result has 331 places, 279 transitions, 3195 flow [2024-06-04 15:17:21,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2995, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3195, PETRI_PLACES=331, PETRI_TRANSITIONS=279} [2024-06-04 15:17:21,157 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 300 predicate places. [2024-06-04 15:17:21,157 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 279 transitions, 3195 flow [2024-06-04 15:17:21,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:17:21,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:17:21,157 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 15:17:21,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-04 15:17:21,157 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 15:17:21,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:17:21,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1814529740, now seen corresponding path program 26 times [2024-06-04 15:17:21,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:17:21,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890748757] [2024-06-04 15:17:21,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:17:21,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:17:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:17:22,054 INFO 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 15:17:22,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:17:22,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890748757] [2024-06-04 15:17:22,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890748757] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:17:22,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:17:22,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:17:22,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466092681] [2024-06-04 15:17:22,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:17:22,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:17:22,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:17:22,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:17:22,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:17:22,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:17:22,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 279 transitions, 3195 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:17:22,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:17:22,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:17:22,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:17:22,517 INFO L124 PetriNetUnfolderBase]: 765/1392 cut-off events. [2024-06-04 15:17:22,517 INFO L125 PetriNetUnfolderBase]: For 114378/114378 co-relation queries the response was YES. [2024-06-04 15:17:22,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9095 conditions, 1392 events. 765/1392 cut-off events. For 114378/114378 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7751 event pairs, 117 based on Foata normal form. 2/1390 useless extension candidates. Maximal degree in co-relation 8940. Up to 1038 conditions per place. [2024-06-04 15:17:22,533 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 201 selfloop transitions, 91 changer transitions 0/294 dead transitions. [2024-06-04 15:17:22,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 294 transitions, 3861 flow [2024-06-04 15:17:22,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:17:22,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:17:22,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-04 15:17:22,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-04 15:17:22,534 INFO L175 Difference]: Start difference. First operand has 331 places, 279 transitions, 3195 flow. Second operand 10 states and 111 transitions. [2024-06-04 15:17:22,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 294 transitions, 3861 flow [2024-06-04 15:17:22,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 294 transitions, 3629 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-04 15:17:22,950 INFO L231 Difference]: Finished difference. Result has 332 places, 280 transitions, 3195 flow [2024-06-04 15:17:22,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2963, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3195, PETRI_PLACES=332, PETRI_TRANSITIONS=280} [2024-06-04 15:17:22,950 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 301 predicate places. [2024-06-04 15:17:22,950 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 280 transitions, 3195 flow [2024-06-04 15:17:22,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:17:22,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:17:22,951 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 15:17:22,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-04 15:17:22,951 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 15:17:22,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:17:22,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1814525090, now seen corresponding path program 27 times [2024-06-04 15:17:22,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:17:22,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921633194] [2024-06-04 15:17:22,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:17:22,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:17:22,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:17:23,861 INFO 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 15:17:23,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:17:23,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921633194] [2024-06-04 15:17:23,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921633194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:17:23,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:17:23,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:17:23,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809374560] [2024-06-04 15:17:23,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:17:23,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:17:23,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:17:23,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:17:23,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:17:23,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:17:23,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 280 transitions, 3195 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:17:23,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:17:23,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:17:23,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:17:24,314 INFO L124 PetriNetUnfolderBase]: 769/1400 cut-off events. [2024-06-04 15:17:24,314 INFO L125 PetriNetUnfolderBase]: For 117390/117390 co-relation queries the response was YES. [2024-06-04 15:17:24,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9158 conditions, 1400 events. 769/1400 cut-off events. For 117390/117390 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7833 event pairs, 113 based on Foata normal form. 2/1398 useless extension candidates. Maximal degree in co-relation 9002. Up to 1032 conditions per place. [2024-06-04 15:17:24,331 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 201 selfloop transitions, 92 changer transitions 0/295 dead transitions. [2024-06-04 15:17:24,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 295 transitions, 3863 flow [2024-06-04 15:17:24,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:17:24,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:17:24,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-04 15:17:24,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-04 15:17:24,332 INFO L175 Difference]: Start difference. First operand has 332 places, 280 transitions, 3195 flow. Second operand 10 states and 112 transitions. [2024-06-04 15:17:24,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 295 transitions, 3863 flow [2024-06-04 15:17:24,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 295 transitions, 3641 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-04 15:17:24,805 INFO L231 Difference]: Finished difference. Result has 334 places, 281 transitions, 3209 flow [2024-06-04 15:17:24,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2973, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3209, PETRI_PLACES=334, PETRI_TRANSITIONS=281} [2024-06-04 15:17:24,805 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 303 predicate places. [2024-06-04 15:17:24,805 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 281 transitions, 3209 flow [2024-06-04 15:17:24,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:17:24,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:17:24,806 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 15:17:24,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-04 15:17:24,806 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 15:17:24,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:17:24,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1322922476, now seen corresponding path program 2 times [2024-06-04 15:17:24,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:17:24,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115271930] [2024-06-04 15:17:24,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:17:24,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:17:24,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:17:25,598 INFO 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 15:17:25,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:17:25,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115271930] [2024-06-04 15:17:25,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115271930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:17:25,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:17:25,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:17:25,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135950003] [2024-06-04 15:17:25,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:17:25,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:17:25,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:17:25,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:17:25,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:17:25,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:17:25,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 281 transitions, 3209 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:17:25,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:17:25,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:17:25,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:17:26,081 INFO L124 PetriNetUnfolderBase]: 765/1394 cut-off events. [2024-06-04 15:17:26,081 INFO L125 PetriNetUnfolderBase]: For 108422/108422 co-relation queries the response was YES. [2024-06-04 15:17:26,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8878 conditions, 1394 events. 765/1394 cut-off events. For 108422/108422 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7784 event pairs, 92 based on Foata normal form. 2/1392 useless extension candidates. Maximal degree in co-relation 8721. Up to 871 conditions per place. [2024-06-04 15:17:26,098 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 167 selfloop transitions, 127 changer transitions 0/296 dead transitions. [2024-06-04 15:17:26,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 296 transitions, 3841 flow [2024-06-04 15:17:26,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:17:26,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:17:26,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-04 15:17:26,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-04 15:17:26,099 INFO L175 Difference]: Start difference. First operand has 334 places, 281 transitions, 3209 flow. Second operand 10 states and 116 transitions. [2024-06-04 15:17:26,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 296 transitions, 3841 flow [2024-06-04 15:17:26,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 296 transitions, 3601 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-04 15:17:26,574 INFO L231 Difference]: Finished difference. Result has 336 places, 281 transitions, 3232 flow [2024-06-04 15:17:26,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2969, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3232, PETRI_PLACES=336, PETRI_TRANSITIONS=281} [2024-06-04 15:17:26,574 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 305 predicate places. [2024-06-04 15:17:26,575 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 281 transitions, 3232 flow [2024-06-04 15:17:26,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:17:26,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:17:26,575 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 15:17:26,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-04 15:17:26,575 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 15:17:26,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:17:26,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1814409770, now seen corresponding path program 28 times [2024-06-04 15:17:26,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:17:26,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909455538] [2024-06-04 15:17:26,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:17:26,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:17:26,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:17:27,427 INFO 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 15:17:27,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:17:27,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909455538] [2024-06-04 15:17:27,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909455538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:17:27,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:17:27,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:17:27,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108044473] [2024-06-04 15:17:27,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:17:27,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:17:27,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:17:27,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:17:27,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:17:27,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:17:27,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 281 transitions, 3232 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:17:27,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:17:27,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:17:27,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:17:27,813 INFO L124 PetriNetUnfolderBase]: 769/1402 cut-off events. [2024-06-04 15:17:27,813 INFO L125 PetriNetUnfolderBase]: For 110534/110534 co-relation queries the response was YES. [2024-06-04 15:17:27,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9009 conditions, 1402 events. 769/1402 cut-off events. For 110534/110534 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7887 event pairs, 117 based on Foata normal form. 2/1400 useless extension candidates. Maximal degree in co-relation 8851. Up to 955 conditions per place. [2024-06-04 15:17:27,830 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 196 selfloop transitions, 99 changer transitions 0/297 dead transitions. [2024-06-04 15:17:27,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 297 transitions, 4112 flow [2024-06-04 15:17:27,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:17:27,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:17:27,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-04 15:17:27,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-04 15:17:27,831 INFO L175 Difference]: Start difference. First operand has 336 places, 281 transitions, 3232 flow. Second operand 10 states and 112 transitions. [2024-06-04 15:17:27,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 297 transitions, 4112 flow [2024-06-04 15:17:28,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 297 transitions, 3835 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-04 15:17:28,344 INFO L231 Difference]: Finished difference. Result has 337 places, 282 transitions, 3207 flow [2024-06-04 15:17:28,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2957, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3207, PETRI_PLACES=337, PETRI_TRANSITIONS=282} [2024-06-04 15:17:28,345 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 306 predicate places. [2024-06-04 15:17:28,345 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 282 transitions, 3207 flow [2024-06-04 15:17:28,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:17:28,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:17:28,345 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 15:17:28,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-04 15:17:28,345 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 15:17:28,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:17:28,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1954905224, now seen corresponding path program 29 times [2024-06-04 15:17:28,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:17:28,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812940269] [2024-06-04 15:17:28,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:17:28,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:17:28,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:17:29,223 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 15:17:29,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:17:29,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812940269] [2024-06-04 15:17:29,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812940269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:17:29,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:17:29,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:17:29,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735525201] [2024-06-04 15:17:29,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:17:29,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:17:29,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:17:29,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:17:29,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:17:29,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:17:29,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 282 transitions, 3207 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:17:29,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:17:29,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:17:29,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:17:29,728 INFO L124 PetriNetUnfolderBase]: 773/1410 cut-off events. [2024-06-04 15:17:29,728 INFO L125 PetriNetUnfolderBase]: For 111764/111764 co-relation queries the response was YES. [2024-06-04 15:17:29,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9048 conditions, 1410 events. 773/1410 cut-off events. For 111764/111764 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 7944 event pairs, 97 based on Foata normal form. 2/1408 useless extension candidates. Maximal degree in co-relation 8889. Up to 1056 conditions per place. [2024-06-04 15:17:29,744 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 196 selfloop transitions, 99 changer transitions 0/297 dead transitions. [2024-06-04 15:17:29,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 297 transitions, 3885 flow [2024-06-04 15:17:29,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:17:29,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:17:29,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-04 15:17:29,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 15:17:29,746 INFO L175 Difference]: Start difference. First operand has 337 places, 282 transitions, 3207 flow. Second operand 10 states and 110 transitions. [2024-06-04 15:17:29,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 297 transitions, 3885 flow [2024-06-04 15:17:30,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 297 transitions, 3587 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-06-04 15:17:30,305 INFO L231 Difference]: Finished difference. Result has 339 places, 283 transitions, 3163 flow [2024-06-04 15:17:30,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2922, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3163, PETRI_PLACES=339, PETRI_TRANSITIONS=283} [2024-06-04 15:17:30,306 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 308 predicate places. [2024-06-04 15:17:30,306 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 283 transitions, 3163 flow [2024-06-04 15:17:30,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:17:30,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:17:30,307 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 15:17:30,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-04 15:17:30,307 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 15:17:30,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:17:30,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1241762740, now seen corresponding path program 4 times [2024-06-04 15:17:30,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:17:30,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750862006] [2024-06-04 15:17:30,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:17:30,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:17:30,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:17:31,162 INFO 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 15:17:31,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:17:31,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750862006] [2024-06-04 15:17:31,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750862006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:17:31,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:17:31,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:17:31,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182658292] [2024-06-04 15:17:31,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:17:31,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:17:31,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:17:31,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:17:31,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:17:31,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:17:31,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 283 transitions, 3163 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:17:31,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:17:31,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:17:31,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:17:31,670 INFO L124 PetriNetUnfolderBase]: 793/1454 cut-off events. [2024-06-04 15:17:31,670 INFO L125 PetriNetUnfolderBase]: For 165418/165418 co-relation queries the response was YES. [2024-06-04 15:17:31,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8985 conditions, 1454 events. 793/1454 cut-off events. For 165418/165418 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 8207 event pairs, 98 based on Foata normal form. 12/1462 useless extension candidates. Maximal degree in co-relation 8826. Up to 883 conditions per place. [2024-06-04 15:17:31,684 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 170 selfloop transitions, 124 changer transitions 9/305 dead transitions. [2024-06-04 15:17:31,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 305 transitions, 3873 flow [2024-06-04 15:17:31,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:17:31,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:17:31,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-04 15:17:31,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-04 15:17:31,685 INFO L175 Difference]: Start difference. First operand has 339 places, 283 transitions, 3163 flow. Second operand 11 states and 128 transitions. [2024-06-04 15:17:31,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 305 transitions, 3873 flow [2024-06-04 15:17:32,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 305 transitions, 3544 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-04 15:17:32,185 INFO L231 Difference]: Finished difference. Result has 340 places, 280 transitions, 3084 flow [2024-06-04 15:17:32,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2838, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3084, PETRI_PLACES=340, PETRI_TRANSITIONS=280} [2024-06-04 15:17:32,186 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 309 predicate places. [2024-06-04 15:17:32,186 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 280 transitions, 3084 flow [2024-06-04 15:17:32,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:17:32,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:17:32,186 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 15:17:32,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-04 15:17:32,187 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 15:17:32,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:17:32,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1526853930, now seen corresponding path program 3 times [2024-06-04 15:17:32,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:17:32,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155446913] [2024-06-04 15:17:32,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:17:32,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:17:32,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:17:33,093 INFO 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 15:17:33,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:17:33,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155446913] [2024-06-04 15:17:33,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155446913] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:17:33,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:17:33,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:17:33,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013147899] [2024-06-04 15:17:33,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:17:33,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:17:33,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:17:33,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:17:33,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:17:33,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:17:33,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 280 transitions, 3084 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:17:33,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:17:33,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:17:33,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:17:33,587 INFO L124 PetriNetUnfolderBase]: 759/1394 cut-off events. [2024-06-04 15:17:33,587 INFO L125 PetriNetUnfolderBase]: For 102471/102471 co-relation queries the response was YES. [2024-06-04 15:17:33,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8340 conditions, 1394 events. 759/1394 cut-off events. For 102471/102471 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 7900 event pairs, 251 based on Foata normal form. 2/1395 useless extension candidates. Maximal degree in co-relation 8182. Up to 1339 conditions per place. [2024-06-04 15:17:33,603 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 267 selfloop transitions, 23 changer transitions 0/292 dead transitions. [2024-06-04 15:17:33,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 292 transitions, 3694 flow [2024-06-04 15:17:33,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:17:33,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:17:33,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-04 15:17:33,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3096590909090909 [2024-06-04 15:17:33,604 INFO L175 Difference]: Start difference. First operand has 340 places, 280 transitions, 3084 flow. Second operand 11 states and 109 transitions. [2024-06-04 15:17:33,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 292 transitions, 3694 flow [2024-06-04 15:17:34,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 292 transitions, 3406 flow, removed 18 selfloop flow, removed 11 redundant places. [2024-06-04 15:17:34,003 INFO L231 Difference]: Finished difference. Result has 340 places, 280 transitions, 2847 flow [2024-06-04 15:17:34,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2796, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2847, PETRI_PLACES=340, PETRI_TRANSITIONS=280} [2024-06-04 15:17:34,004 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 309 predicate places. [2024-06-04 15:17:34,004 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 280 transitions, 2847 flow [2024-06-04 15:17:34,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:17:34,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:17:34,004 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 15:17:34,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-04 15:17:34,005 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 15:17:34,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:17:34,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1608261666, now seen corresponding path program 5 times [2024-06-04 15:17:34,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:17:34,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743897953] [2024-06-04 15:17:34,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:17:34,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:17:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:17:34,915 INFO 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 15:17:34,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:17:34,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743897953] [2024-06-04 15:17:34,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743897953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:17:34,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:17:34,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:17:34,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014964277] [2024-06-04 15:17:34,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:17:34,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:17:34,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:17:34,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:17:34,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:17:35,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:17:35,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 280 transitions, 2847 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:17:35,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:17:35,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:17:35,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:17:35,429 INFO L124 PetriNetUnfolderBase]: 782/1443 cut-off events. [2024-06-04 15:17:35,429 INFO L125 PetriNetUnfolderBase]: For 158995/158995 co-relation queries the response was YES. [2024-06-04 15:17:35,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8244 conditions, 1443 events. 782/1443 cut-off events. For 158995/158995 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8191 event pairs, 255 based on Foata normal form. 12/1454 useless extension candidates. Maximal degree in co-relation 8086. Up to 1351 conditions per place. [2024-06-04 15:17:35,445 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 272 selfloop transitions, 18 changer transitions 8/300 dead transitions. [2024-06-04 15:17:35,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 300 transitions, 3548 flow [2024-06-04 15:17:35,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:17:35,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:17:35,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-04 15:17:35,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-06-04 15:17:35,446 INFO L175 Difference]: Start difference. First operand has 340 places, 280 transitions, 2847 flow. Second operand 11 states and 112 transitions. [2024-06-04 15:17:35,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 300 transitions, 3548 flow [2024-06-04 15:17:35,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 300 transitions, 3489 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-04 15:17:35,873 INFO L231 Difference]: Finished difference. Result has 342 places, 280 transitions, 2861 flow [2024-06-04 15:17:35,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2794, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2861, PETRI_PLACES=342, PETRI_TRANSITIONS=280} [2024-06-04 15:17:35,874 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 311 predicate places. [2024-06-04 15:17:35,874 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 280 transitions, 2861 flow [2024-06-04 15:17:35,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:17:35,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:17:35,888 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 15:17:35,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-04 15:17:35,888 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 15:17:35,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:17:35,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1873501518, now seen corresponding path program 30 times [2024-06-04 15:17:35,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:17:35,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350065025] [2024-06-04 15:17:35,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:17:35,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:17:35,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:17:36,746 INFO 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 15:17:36,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:17:36,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350065025] [2024-06-04 15:17:36,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350065025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:17:36,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:17:36,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:17:36,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563640931] [2024-06-04 15:17:36,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:17:36,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:17:36,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:17:36,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:17:36,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:17:36,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:17:36,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 280 transitions, 2861 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:17:36,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:17:36,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:17:36,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:17:37,221 INFO L124 PetriNetUnfolderBase]: 753/1388 cut-off events. [2024-06-04 15:17:37,222 INFO L125 PetriNetUnfolderBase]: For 94384/94384 co-relation queries the response was YES. [2024-06-04 15:17:37,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7822 conditions, 1388 events. 753/1388 cut-off events. For 94384/94384 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7904 event pairs, 93 based on Foata normal form. 2/1386 useless extension candidates. Maximal degree in co-relation 7662. Up to 1008 conditions per place. [2024-06-04 15:17:37,238 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 190 selfloop transitions, 102 changer transitions 0/294 dead transitions. [2024-06-04 15:17:37,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 294 transitions, 3481 flow [2024-06-04 15:17:37,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:17:37,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:17:37,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-04 15:17:37,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 15:17:37,240 INFO L175 Difference]: Start difference. First operand has 342 places, 280 transitions, 2861 flow. Second operand 10 states and 110 transitions. [2024-06-04 15:17:37,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 294 transitions, 3481 flow [2024-06-04 15:17:37,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 294 transitions, 3398 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-04 15:17:37,661 INFO L231 Difference]: Finished difference. Result has 342 places, 280 transitions, 2986 flow [2024-06-04 15:17:37,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2778, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2986, PETRI_PLACES=342, PETRI_TRANSITIONS=280} [2024-06-04 15:17:37,662 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 311 predicate places. [2024-06-04 15:17:37,662 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 280 transitions, 2986 flow [2024-06-04 15:17:37,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:17:37,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:17:37,662 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 15:17:37,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-04 15:17:37,662 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 15:17:37,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:17:37,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1880181522, now seen corresponding path program 6 times [2024-06-04 15:17:37,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:17:37,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474477833] [2024-06-04 15:17:37,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:17:37,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:17:37,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:17:38,511 INFO 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 15:17:38,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:17:38,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474477833] [2024-06-04 15:17:38,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474477833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:17:38,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:17:38,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:17:38,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976035630] [2024-06-04 15:17:38,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:17:38,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:17:38,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:17:38,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:17:38,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:17:38,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:17:38,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 280 transitions, 2986 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:17:38,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:17:38,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:17:38,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:17:38,974 INFO L124 PetriNetUnfolderBase]: 773/1432 cut-off events. [2024-06-04 15:17:38,974 INFO L125 PetriNetUnfolderBase]: For 150891/150891 co-relation queries the response was YES. [2024-06-04 15:17:38,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8136 conditions, 1432 events. 773/1432 cut-off events. For 150891/150891 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8166 event pairs, 109 based on Foata normal form. 12/1440 useless extension candidates. Maximal degree in co-relation 7976. Up to 857 conditions per place. [2024-06-04 15:17:38,992 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 182 selfloop transitions, 108 changer transitions 10/302 dead transitions. [2024-06-04 15:17:38,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 302 transitions, 3690 flow [2024-06-04 15:17:38,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:17:38,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:17:38,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-04 15:17:38,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-04 15:17:38,993 INFO L175 Difference]: Start difference. First operand has 342 places, 280 transitions, 2986 flow. Second operand 11 states and 129 transitions. [2024-06-04 15:17:38,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 302 transitions, 3690 flow [2024-06-04 15:17:39,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 302 transitions, 3294 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-04 15:17:39,371 INFO L231 Difference]: Finished difference. Result has 342 places, 276 transitions, 2799 flow [2024-06-04 15:17:39,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2590, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2799, PETRI_PLACES=342, PETRI_TRANSITIONS=276} [2024-06-04 15:17:39,371 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 311 predicate places. [2024-06-04 15:17:39,371 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 276 transitions, 2799 flow [2024-06-04 15:17:39,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:17:39,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:17:39,372 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 15:17:39,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-04 15:17:39,372 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 15:17:39,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:17:39,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1618737186, now seen corresponding path program 7 times [2024-06-04 15:17:39,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:17:39,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773526995] [2024-06-04 15:17:39,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:17:39,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:17:39,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:17:40,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:17:40,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:17:40,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773526995] [2024-06-04 15:17:40,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773526995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:17:40,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:17:40,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:17:40,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37421999] [2024-06-04 15:17:40,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:17:40,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:17:40,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:17:40,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:17:40,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:17:40,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:17:40,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 276 transitions, 2799 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:17:40,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:17:40,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:17:40,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:17:41,151 INFO L124 PetriNetUnfolderBase]: 743/1382 cut-off events. [2024-06-04 15:17:41,152 INFO L125 PetriNetUnfolderBase]: For 94551/94551 co-relation queries the response was YES. [2024-06-04 15:17:41,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7649 conditions, 1382 events. 743/1382 cut-off events. For 94551/94551 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 7925 event pairs, 248 based on Foata normal form. 2/1383 useless extension candidates. Maximal degree in co-relation 7489. Up to 1311 conditions per place. [2024-06-04 15:17:41,168 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 266 selfloop transitions, 24 changer transitions 0/292 dead transitions. [2024-06-04 15:17:41,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 292 transitions, 3657 flow [2024-06-04 15:17:41,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:17:41,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:17:41,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 116 transitions. [2024-06-04 15:17:41,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3020833333333333 [2024-06-04 15:17:41,169 INFO L175 Difference]: Start difference. First operand has 342 places, 276 transitions, 2799 flow. Second operand 12 states and 116 transitions. [2024-06-04 15:17:41,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 292 transitions, 3657 flow [2024-06-04 15:17:41,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 292 transitions, 3407 flow, removed 14 selfloop flow, removed 12 redundant places. [2024-06-04 15:17:41,572 INFO L231 Difference]: Finished difference. Result has 342 places, 277 transitions, 2631 flow [2024-06-04 15:17:41,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2549, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2631, PETRI_PLACES=342, PETRI_TRANSITIONS=277} [2024-06-04 15:17:41,573 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 311 predicate places. [2024-06-04 15:17:41,573 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 277 transitions, 2631 flow [2024-06-04 15:17:41,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:17:41,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:17:41,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:17:41,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-04 15:17:41,574 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 15:17:41,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:17:41,574 INFO L85 PathProgramCache]: Analyzing trace with hash -2103409808, now seen corresponding path program 8 times [2024-06-04 15:17:41,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:17:41,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302167435] [2024-06-04 15:17:41,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:17:41,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:17:41,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:17:42,489 INFO 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 15:17:42,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:17:42,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302167435] [2024-06-04 15:17:42,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302167435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:17:42,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:17:42,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:17:42,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153463510] [2024-06-04 15:17:42,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:17:42,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:17:42,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:17:42,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:17:42,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:17:42,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:17:42,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 277 transitions, 2631 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:17:42,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:17:42,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:17:42,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:17:42,938 INFO L124 PetriNetUnfolderBase]: 740/1377 cut-off events. [2024-06-04 15:17:42,939 INFO L125 PetriNetUnfolderBase]: For 83869/83869 co-relation queries the response was YES. [2024-06-04 15:17:42,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7156 conditions, 1377 events. 740/1377 cut-off events. For 83869/83869 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 7905 event pairs, 249 based on Foata normal form. 2/1378 useless extension candidates. Maximal degree in co-relation 6997. Up to 1329 conditions per place. [2024-06-04 15:17:42,956 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 264 selfloop transitions, 23 changer transitions 0/289 dead transitions. [2024-06-04 15:17:42,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 289 transitions, 3231 flow [2024-06-04 15:17:42,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:17:42,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:17:42,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 112 transitions. [2024-06-04 15:17:42,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2916666666666667 [2024-06-04 15:17:42,957 INFO L175 Difference]: Start difference. First operand has 342 places, 277 transitions, 2631 flow. Second operand 12 states and 112 transitions. [2024-06-04 15:17:42,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 289 transitions, 3231 flow [2024-06-04 15:17:43,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 289 transitions, 3066 flow, removed 27 selfloop flow, removed 11 redundant places. [2024-06-04 15:17:43,388 INFO L231 Difference]: Finished difference. Result has 343 places, 277 transitions, 2518 flow [2024-06-04 15:17:43,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2466, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2518, PETRI_PLACES=343, PETRI_TRANSITIONS=277} [2024-06-04 15:17:43,389 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-04 15:17:43,389 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 277 transitions, 2518 flow [2024-06-04 15:17:43,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 15:17:43,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:17:43,389 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 15:17:43,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-04 15:17:43,390 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 15:17:43,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:17:43,390 INFO L85 PathProgramCache]: Analyzing trace with hash -372320314, now seen corresponding path program 1 times [2024-06-04 15:17:43,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:17:43,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115148620] [2024-06-04 15:17:43,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:17:43,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:17:43,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:17:44,231 INFO 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 15:17:44,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:17:44,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115148620] [2024-06-04 15:17:44,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115148620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:17:44,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:17:44,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:17:44,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916217790] [2024-06-04 15:17:44,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:17:44,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:17:44,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:17:44,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:17:44,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:17:44,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:17:44,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 277 transitions, 2518 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:17:44,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:17:44,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:17:44,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:17:44,671 INFO L124 PetriNetUnfolderBase]: 761/1422 cut-off events. [2024-06-04 15:17:44,671 INFO L125 PetriNetUnfolderBase]: For 84970/84970 co-relation queries the response was YES. [2024-06-04 15:17:44,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7093 conditions, 1422 events. 761/1422 cut-off events. For 84970/84970 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 8306 event pairs, 164 based on Foata normal form. 2/1423 useless extension candidates. Maximal degree in co-relation 6935. Up to 1320 conditions per place. [2024-06-04 15:17:44,687 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 277 selfloop transitions, 26 changer transitions 0/305 dead transitions. [2024-06-04 15:17:44,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 305 transitions, 3213 flow [2024-06-04 15:17:44,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:17:44,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:17:44,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 122 transitions. [2024-06-04 15:17:44,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3177083333333333 [2024-06-04 15:17:44,688 INFO L175 Difference]: Start difference. First operand has 343 places, 277 transitions, 2518 flow. Second operand 12 states and 122 transitions. [2024-06-04 15:17:44,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 305 transitions, 3213 flow [2024-06-04 15:17:45,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 305 transitions, 3086 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-04 15:17:45,100 INFO L231 Difference]: Finished difference. Result has 346 places, 282 transitions, 2495 flow [2024-06-04 15:17:45,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2393, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2495, PETRI_PLACES=346, PETRI_TRANSITIONS=282} [2024-06-04 15:17:45,100 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 315 predicate places. [2024-06-04 15:17:45,100 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 282 transitions, 2495 flow [2024-06-04 15:17:45,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:17:45,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:17:45,101 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 15:17:45,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-04 15:17:45,101 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 15:17:45,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:17:45,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1178999546, now seen corresponding path program 2 times [2024-06-04 15:17:45,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:17:45,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70614847] [2024-06-04 15:17:45,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:17:45,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:17:45,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:17:45,944 INFO 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 15:17:45,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:17:45,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70614847] [2024-06-04 15:17:45,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70614847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:17:45,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:17:45,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:17:45,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630197872] [2024-06-04 15:17:45,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:17:45,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:17:45,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:17:45,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:17:45,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:17:46,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:17:46,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 282 transitions, 2495 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:17:46,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:17:46,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:17:46,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:17:46,437 INFO L124 PetriNetUnfolderBase]: 781/1458 cut-off events. [2024-06-04 15:17:46,438 INFO L125 PetriNetUnfolderBase]: For 96088/96088 co-relation queries the response was YES. [2024-06-04 15:17:46,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7459 conditions, 1458 events. 781/1458 cut-off events. For 96088/96088 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 8552 event pairs, 161 based on Foata normal form. 2/1459 useless extension candidates. Maximal degree in co-relation 7297. Up to 1281 conditions per place. [2024-06-04 15:17:46,455 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 275 selfloop transitions, 36 changer transitions 0/313 dead transitions. [2024-06-04 15:17:46,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 313 transitions, 3480 flow [2024-06-04 15:17:46,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:17:46,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:17:46,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-04 15:17:46,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-04 15:17:46,456 INFO L175 Difference]: Start difference. First operand has 346 places, 282 transitions, 2495 flow. Second operand 12 states and 129 transitions. [2024-06-04 15:17:46,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 313 transitions, 3480 flow [2024-06-04 15:17:47,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 313 transitions, 3428 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-04 15:17:47,007 INFO L231 Difference]: Finished difference. Result has 353 places, 288 transitions, 2607 flow [2024-06-04 15:17:47,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2443, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2607, PETRI_PLACES=353, PETRI_TRANSITIONS=288} [2024-06-04 15:17:47,007 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 322 predicate places. [2024-06-04 15:17:47,007 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 288 transitions, 2607 flow [2024-06-04 15:17:47,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:17:47,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:17:47,009 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 15:17:47,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-04 15:17:47,009 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 15:17:47,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:17:47,009 INFO L85 PathProgramCache]: Analyzing trace with hash 85415212, now seen corresponding path program 3 times [2024-06-04 15:17:47,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:17:47,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233036426] [2024-06-04 15:17:47,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:17:47,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:17:47,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:17:47,833 INFO 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 15:17:47,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:17:47,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233036426] [2024-06-04 15:17:47,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233036426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:17:47,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:17:47,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:17:47,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756548751] [2024-06-04 15:17:47,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:17:47,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:17:47,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:17:47,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:17:47,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:17:47,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:17:47,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 288 transitions, 2607 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:17:47,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:17:47,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:17:47,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:17:48,306 INFO L124 PetriNetUnfolderBase]: 792/1479 cut-off events. [2024-06-04 15:17:48,306 INFO L125 PetriNetUnfolderBase]: For 110989/110989 co-relation queries the response was YES. [2024-06-04 15:17:48,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7872 conditions, 1479 events. 792/1479 cut-off events. For 110989/110989 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 8707 event pairs, 174 based on Foata normal form. 2/1480 useless extension candidates. Maximal degree in co-relation 7708. Up to 1350 conditions per place. [2024-06-04 15:17:48,323 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 275 selfloop transitions, 38 changer transitions 0/315 dead transitions. [2024-06-04 15:17:48,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 315 transitions, 3568 flow [2024-06-04 15:17:48,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:17:48,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:17:48,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-04 15:17:48,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3307291666666667 [2024-06-04 15:17:48,325 INFO L175 Difference]: Start difference. First operand has 353 places, 288 transitions, 2607 flow. Second operand 12 states and 127 transitions. [2024-06-04 15:17:48,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 315 transitions, 3568 flow [2024-06-04 15:17:48,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 315 transitions, 3518 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-04 15:17:48,802 INFO L231 Difference]: Finished difference. Result has 359 places, 292 transitions, 2701 flow [2024-06-04 15:17:48,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2561, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2701, PETRI_PLACES=359, PETRI_TRANSITIONS=292} [2024-06-04 15:17:48,802 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2024-06-04 15:17:48,803 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 292 transitions, 2701 flow [2024-06-04 15:17:48,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:17:48,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:17:48,803 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 15:17:48,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-04 15:17:48,803 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 15:17:48,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:17:48,804 INFO L85 PathProgramCache]: Analyzing trace with hash -492374080, now seen corresponding path program 4 times [2024-06-04 15:17:48,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:17:48,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913548406] [2024-06-04 15:17:48,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:17:48,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:17:48,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:17:49,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:17:49,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:17:49,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913548406] [2024-06-04 15:17:49,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913548406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:17:49,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:17:49,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:17:49,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359795776] [2024-06-04 15:17:49,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:17:49,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:17:49,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:17:49,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:17:49,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:17:49,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:17:49,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 292 transitions, 2701 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:17:49,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:17:49,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:17:49,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:17:49,996 INFO L124 PetriNetUnfolderBase]: 789/1474 cut-off events. [2024-06-04 15:17:49,997 INFO L125 PetriNetUnfolderBase]: For 100776/100776 co-relation queries the response was YES. [2024-06-04 15:17:50,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7700 conditions, 1474 events. 789/1474 cut-off events. For 100776/100776 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 8695 event pairs, 166 based on Foata normal form. 2/1475 useless extension candidates. Maximal degree in co-relation 7533. Up to 1321 conditions per place. [2024-06-04 15:17:50,014 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 275 selfloop transitions, 38 changer transitions 0/315 dead transitions. [2024-06-04 15:17:50,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 315 transitions, 3610 flow [2024-06-04 15:17:50,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:17:50,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:17:50,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-04 15:17:50,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 15:17:50,016 INFO L175 Difference]: Start difference. First operand has 359 places, 292 transitions, 2701 flow. Second operand 12 states and 128 transitions. [2024-06-04 15:17:50,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 315 transitions, 3610 flow [2024-06-04 15:17:50,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 315 transitions, 3554 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-04 15:17:50,625 INFO L231 Difference]: Finished difference. Result has 364 places, 292 transitions, 2725 flow [2024-06-04 15:17:50,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2645, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2725, PETRI_PLACES=364, PETRI_TRANSITIONS=292} [2024-06-04 15:17:50,626 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 333 predicate places. [2024-06-04 15:17:50,626 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 292 transitions, 2725 flow [2024-06-04 15:17:50,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:17:50,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:17:50,626 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 15:17:50,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-04 15:17:50,626 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 15:17:50,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:17:50,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1832902152, now seen corresponding path program 5 times [2024-06-04 15:17:50,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:17:50,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315030014] [2024-06-04 15:17:50,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:17:50,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:17:50,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:17:51,341 INFO 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 15:17:51,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:17:51,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315030014] [2024-06-04 15:17:51,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315030014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:17:51,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:17:51,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:17:51,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100494024] [2024-06-04 15:17:51,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:17:51,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:17:51,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:17:51,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:17:51,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:17:51,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:17:51,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 292 transitions, 2725 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:17:51,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:17:51,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:17:51,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:17:51,781 INFO L124 PetriNetUnfolderBase]: 786/1469 cut-off events. [2024-06-04 15:17:51,781 INFO L125 PetriNetUnfolderBase]: For 90078/90078 co-relation queries the response was YES. [2024-06-04 15:17:51,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7521 conditions, 1469 events. 786/1469 cut-off events. For 90078/90078 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 8665 event pairs, 177 based on Foata normal form. 2/1470 useless extension candidates. Maximal degree in co-relation 7352. Up to 1359 conditions per place. [2024-06-04 15:17:51,797 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 274 selfloop transitions, 38 changer transitions 0/314 dead transitions. [2024-06-04 15:17:51,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 314 transitions, 3412 flow [2024-06-04 15:17:51,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:17:51,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:17:51,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-04 15:17:51,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255208333333333 [2024-06-04 15:17:51,799 INFO L175 Difference]: Start difference. First operand has 364 places, 292 transitions, 2725 flow. Second operand 12 states and 125 transitions. [2024-06-04 15:17:51,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 314 transitions, 3412 flow [2024-06-04 15:17:52,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 314 transitions, 3284 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-06-04 15:17:52,235 INFO L231 Difference]: Finished difference. Result has 364 places, 292 transitions, 2678 flow [2024-06-04 15:17:52,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2597, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2678, PETRI_PLACES=364, PETRI_TRANSITIONS=292} [2024-06-04 15:17:52,236 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 333 predicate places. [2024-06-04 15:17:52,236 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 292 transitions, 2678 flow [2024-06-04 15:17:52,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:17:52,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:17:52,236 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 15:17:52,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-04 15:17:52,236 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 15:17:52,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:17:52,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1947851700, now seen corresponding path program 6 times [2024-06-04 15:17:52,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:17:52,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192100507] [2024-06-04 15:17:52,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:17:52,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:17:52,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:17:53,063 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 15:17:53,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:17:53,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192100507] [2024-06-04 15:17:53,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192100507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:17:53,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:17:53,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:17:53,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035966821] [2024-06-04 15:17:53,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:17:53,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:17:53,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:17:53,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:17:53,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:17:53,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:17:53,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 292 transitions, 2678 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:17:53,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:17:53,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:17:53,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:17:53,537 INFO L124 PetriNetUnfolderBase]: 807/1512 cut-off events. [2024-06-04 15:17:53,538 INFO L125 PetriNetUnfolderBase]: For 91511/91511 co-relation queries the response was YES. [2024-06-04 15:17:53,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7580 conditions, 1512 events. 807/1512 cut-off events. For 91511/91511 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 8994 event pairs, 163 based on Foata normal form. 2/1513 useless extension candidates. Maximal degree in co-relation 7411. Up to 1382 conditions per place. [2024-06-04 15:17:53,556 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 289 selfloop transitions, 28 changer transitions 0/319 dead transitions. [2024-06-04 15:17:53,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 319 transitions, 3404 flow [2024-06-04 15:17:53,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:17:53,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:17:53,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 119 transitions. [2024-06-04 15:17:53,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3098958333333333 [2024-06-04 15:17:53,557 INFO L175 Difference]: Start difference. First operand has 364 places, 292 transitions, 2678 flow. Second operand 12 states and 119 transitions. [2024-06-04 15:17:53,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 319 transitions, 3404 flow [2024-06-04 15:17:54,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 319 transitions, 3327 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-04 15:17:54,126 INFO L231 Difference]: Finished difference. Result has 369 places, 297 transitions, 2715 flow [2024-06-04 15:17:54,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2601, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2715, PETRI_PLACES=369, PETRI_TRANSITIONS=297} [2024-06-04 15:17:54,127 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 338 predicate places. [2024-06-04 15:17:54,128 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 297 transitions, 2715 flow [2024-06-04 15:17:54,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:17:54,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:17:54,128 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 15:17:54,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-04 15:17:54,130 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 15:17:54,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:17:54,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1069578124, now seen corresponding path program 1 times [2024-06-04 15:17:54,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:17:54,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114755051] [2024-06-04 15:17:54,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:17:54,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:17:54,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:17:55,112 INFO 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 15:17:55,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:17:55,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114755051] [2024-06-04 15:17:55,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114755051] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:17:55,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:17:55,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:17:55,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287579675] [2024-06-04 15:17:55,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:17:55,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:17:55,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:17:55,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:17:55,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:17:55,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:17:55,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 297 transitions, 2715 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:17:55,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:17:55,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:17:55,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:17:55,736 INFO L124 PetriNetUnfolderBase]: 833/1566 cut-off events. [2024-06-04 15:17:55,737 INFO L125 PetriNetUnfolderBase]: For 144271/144271 co-relation queries the response was YES. [2024-06-04 15:17:55,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7792 conditions, 1566 events. 833/1566 cut-off events. For 144271/144271 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 9363 event pairs, 157 based on Foata normal form. 10/1575 useless extension candidates. Maximal degree in co-relation 7619. Up to 1420 conditions per place. [2024-06-04 15:17:55,756 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 287 selfloop transitions, 31 changer transitions 9/329 dead transitions. [2024-06-04 15:17:55,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 329 transitions, 3494 flow [2024-06-04 15:17:55,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 15:17:55,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 15:17:55,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 137 transitions. [2024-06-04 15:17:55,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3293269230769231 [2024-06-04 15:17:55,757 INFO L175 Difference]: Start difference. First operand has 369 places, 297 transitions, 2715 flow. Second operand 13 states and 137 transitions. [2024-06-04 15:17:55,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 329 transitions, 3494 flow [2024-06-04 15:17:56,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 329 transitions, 3416 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-04 15:17:56,394 INFO L231 Difference]: Finished difference. Result has 377 places, 299 transitions, 2726 flow [2024-06-04 15:17:56,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2638, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2726, PETRI_PLACES=377, PETRI_TRANSITIONS=299} [2024-06-04 15:17:56,395 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 346 predicate places. [2024-06-04 15:17:56,395 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 299 transitions, 2726 flow [2024-06-04 15:17:56,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:17:56,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:17:56,396 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 15:17:56,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-04 15:17:56,396 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 15:17:56,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:17:56,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1411415936, now seen corresponding path program 7 times [2024-06-04 15:17:56,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:17:56,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251873844] [2024-06-04 15:17:56,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:17:56,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:17:56,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:17:57,304 INFO 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 15:17:57,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:17:57,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251873844] [2024-06-04 15:17:57,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251873844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:17:57,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:17:57,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:17:57,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442625164] [2024-06-04 15:17:57,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:17:57,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:17:57,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:17:57,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:17:57,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:17:57,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:17:57,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 299 transitions, 2726 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:17:57,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:17:57,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:17:57,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:17:57,873 INFO L124 PetriNetUnfolderBase]: 828/1559 cut-off events. [2024-06-04 15:17:57,874 INFO L125 PetriNetUnfolderBase]: For 94793/94793 co-relation queries the response was YES. [2024-06-04 15:17:57,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7788 conditions, 1559 events. 828/1559 cut-off events. For 94793/94793 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 9390 event pairs, 157 based on Foata normal form. 2/1560 useless extension candidates. Maximal degree in co-relation 7613. Up to 1457 conditions per place. [2024-06-04 15:17:57,892 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 298 selfloop transitions, 26 changer transitions 0/326 dead transitions. [2024-06-04 15:17:57,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 326 transitions, 3482 flow [2024-06-04 15:17:57,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:17:57,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:17:57,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-04 15:17:57,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3203125 [2024-06-04 15:17:57,894 INFO L175 Difference]: Start difference. First operand has 377 places, 299 transitions, 2726 flow. Second operand 12 states and 123 transitions. [2024-06-04 15:17:57,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 326 transitions, 3482 flow [2024-06-04 15:17:58,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 326 transitions, 3427 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-04 15:17:58,437 INFO L231 Difference]: Finished difference. Result has 386 places, 304 transitions, 2795 flow [2024-06-04 15:17:58,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2673, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2795, PETRI_PLACES=386, PETRI_TRANSITIONS=304} [2024-06-04 15:17:58,438 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 355 predicate places. [2024-06-04 15:17:58,438 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 304 transitions, 2795 flow [2024-06-04 15:17:58,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:17:58,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:17:58,438 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 15:17:58,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-04 15:17:58,439 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 15:17:58,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:17:58,439 INFO L85 PathProgramCache]: Analyzing trace with hash -332560228, now seen corresponding path program 8 times [2024-06-04 15:17:58,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:17:58,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508816689] [2024-06-04 15:17:58,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:17:58,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:17:58,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:17:59,337 INFO 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 15:17:59,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:17:59,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508816689] [2024-06-04 15:17:59,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508816689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:17:59,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:17:59,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:17:59,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389855141] [2024-06-04 15:17:59,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:17:59,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:17:59,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:17:59,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:17:59,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:17:59,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:17:59,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 304 transitions, 2795 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:17:59,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:17:59,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:17:59,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:17:59,881 INFO L124 PetriNetUnfolderBase]: 848/1595 cut-off events. [2024-06-04 15:17:59,881 INFO L125 PetriNetUnfolderBase]: For 108420/108420 co-relation queries the response was YES. [2024-06-04 15:17:59,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8271 conditions, 1595 events. 848/1595 cut-off events. For 108420/108420 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 9632 event pairs, 162 based on Foata normal form. 2/1596 useless extension candidates. Maximal degree in co-relation 8092. Up to 1446 conditions per place. [2024-06-04 15:17:59,900 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 293 selfloop transitions, 37 changer transitions 0/332 dead transitions. [2024-06-04 15:17:59,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 332 transitions, 3831 flow [2024-06-04 15:17:59,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:17:59,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:17:59,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-04 15:17:59,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-04 15:17:59,902 INFO L175 Difference]: Start difference. First operand has 386 places, 304 transitions, 2795 flow. Second operand 12 states and 129 transitions. [2024-06-04 15:17:59,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 332 transitions, 3831 flow [2024-06-04 15:18:00,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 332 transitions, 3759 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-04 15:18:00,433 INFO L231 Difference]: Finished difference. Result has 393 places, 310 transitions, 2907 flow [2024-06-04 15:18:00,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2723, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2907, PETRI_PLACES=393, PETRI_TRANSITIONS=310} [2024-06-04 15:18:00,434 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 362 predicate places. [2024-06-04 15:18:00,434 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 310 transitions, 2907 flow [2024-06-04 15:18:00,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:00,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:18:00,435 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 15:18:00,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-04 15:18:00,435 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 15:18:00,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:18:00,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1184172646, now seen corresponding path program 9 times [2024-06-04 15:18:00,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:18:00,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891947418] [2024-06-04 15:18:00,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:18:00,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:18:00,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:18:01,246 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 15:18:01,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:18:01,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891947418] [2024-06-04 15:18:01,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891947418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:18:01,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:18:01,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:18:01,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885324490] [2024-06-04 15:18:01,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:18:01,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:18:01,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:18:01,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:18:01,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:18:01,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:18:01,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 310 transitions, 2907 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:01,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:18:01,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:18:01,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:18:01,797 INFO L124 PetriNetUnfolderBase]: 852/1603 cut-off events. [2024-06-04 15:18:01,797 INFO L125 PetriNetUnfolderBase]: For 110459/110459 co-relation queries the response was YES. [2024-06-04 15:18:01,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8366 conditions, 1603 events. 852/1603 cut-off events. For 110459/110459 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 9712 event pairs, 164 based on Foata normal form. 2/1604 useless extension candidates. Maximal degree in co-relation 8185. Up to 1474 conditions per place. [2024-06-04 15:18:01,817 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 293 selfloop transitions, 38 changer transitions 0/333 dead transitions. [2024-06-04 15:18:01,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 333 transitions, 3885 flow [2024-06-04 15:18:01,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:18:01,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:18:01,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-04 15:18:01,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 15:18:01,818 INFO L175 Difference]: Start difference. First operand has 393 places, 310 transitions, 2907 flow. Second operand 12 states and 128 transitions. [2024-06-04 15:18:01,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 333 transitions, 3885 flow [2024-06-04 15:18:02,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 333 transitions, 3815 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-04 15:18:02,472 INFO L231 Difference]: Finished difference. Result has 398 places, 311 transitions, 2939 flow [2024-06-04 15:18:02,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2841, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2939, PETRI_PLACES=398, PETRI_TRANSITIONS=311} [2024-06-04 15:18:02,472 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 367 predicate places. [2024-06-04 15:18:02,472 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 311 transitions, 2939 flow [2024-06-04 15:18:02,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:02,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:18:02,473 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 15:18:02,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-04 15:18:02,473 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 15:18:02,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:18:02,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1184167066, now seen corresponding path program 10 times [2024-06-04 15:18:02,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:18:02,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986357031] [2024-06-04 15:18:02,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:18:02,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:18:02,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:18:03,287 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 15:18:03,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:18:03,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986357031] [2024-06-04 15:18:03,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986357031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:18:03,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:18:03,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:18:03,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575177693] [2024-06-04 15:18:03,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:18:03,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:18:03,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:18:03,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:18:03,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:18:03,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:18:03,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 311 transitions, 2939 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:03,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:18:03,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:18:03,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:18:03,869 INFO L124 PetriNetUnfolderBase]: 849/1598 cut-off events. [2024-06-04 15:18:03,870 INFO L125 PetriNetUnfolderBase]: For 98503/98503 co-relation queries the response was YES. [2024-06-04 15:18:03,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8127 conditions, 1598 events. 849/1598 cut-off events. For 98503/98503 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 9676 event pairs, 165 based on Foata normal form. 2/1599 useless extension candidates. Maximal degree in co-relation 7944. Up to 1488 conditions per place. [2024-06-04 15:18:03,890 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 292 selfloop transitions, 38 changer transitions 0/332 dead transitions. [2024-06-04 15:18:03,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 332 transitions, 3661 flow [2024-06-04 15:18:03,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:18:03,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:18:03,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-04 15:18:03,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-04 15:18:03,891 INFO L175 Difference]: Start difference. First operand has 398 places, 311 transitions, 2939 flow. Second operand 12 states and 126 transitions. [2024-06-04 15:18:03,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 332 transitions, 3661 flow [2024-06-04 15:18:04,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 332 transitions, 3550 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-04 15:18:04,547 INFO L231 Difference]: Finished difference. Result has 400 places, 311 transitions, 2909 flow [2024-06-04 15:18:04,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2828, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2909, PETRI_PLACES=400, PETRI_TRANSITIONS=311} [2024-06-04 15:18:04,547 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 369 predicate places. [2024-06-04 15:18:04,547 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 311 transitions, 2909 flow [2024-06-04 15:18:04,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:04,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:18:04,548 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 15:18:04,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-04 15:18:04,548 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 15:18:04,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:18:04,548 INFO L85 PathProgramCache]: Analyzing trace with hash 64496718, now seen corresponding path program 11 times [2024-06-04 15:18:04,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:18:04,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431726684] [2024-06-04 15:18:04,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:18:04,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:18:04,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:18:05,454 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 15:18:05,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:18:05,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431726684] [2024-06-04 15:18:05,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431726684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:18:05,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:18:05,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:18:05,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049818663] [2024-06-04 15:18:05,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:18:05,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:18:05,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:18:05,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:18:05,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:18:05,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:18:05,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 311 transitions, 2909 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:05,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:18:05,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:18:05,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:18:06,001 INFO L124 PetriNetUnfolderBase]: 853/1606 cut-off events. [2024-06-04 15:18:06,001 INFO L125 PetriNetUnfolderBase]: For 100130/100130 co-relation queries the response was YES. [2024-06-04 15:18:06,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8131 conditions, 1606 events. 853/1606 cut-off events. For 100130/100130 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 9761 event pairs, 165 based on Foata normal form. 2/1607 useless extension candidates. Maximal degree in co-relation 7948. Up to 1424 conditions per place. [2024-06-04 15:18:06,066 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 293 selfloop transitions, 38 changer transitions 0/333 dead transitions. [2024-06-04 15:18:06,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 333 transitions, 3649 flow [2024-06-04 15:18:06,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:18:06,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:18:06,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-04 15:18:06,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-04 15:18:06,067 INFO L175 Difference]: Start difference. First operand has 400 places, 311 transitions, 2909 flow. Second operand 12 states and 129 transitions. [2024-06-04 15:18:06,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 333 transitions, 3649 flow [2024-06-04 15:18:06,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 333 transitions, 3551 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-04 15:18:06,733 INFO L231 Difference]: Finished difference. Result has 401 places, 312 transitions, 2915 flow [2024-06-04 15:18:06,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2811, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2915, PETRI_PLACES=401, PETRI_TRANSITIONS=312} [2024-06-04 15:18:06,733 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 370 predicate places. [2024-06-04 15:18:06,733 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 312 transitions, 2915 flow [2024-06-04 15:18:06,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:06,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:18:06,734 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 15:18:06,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-04 15:18:06,734 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 15:18:06,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:18:06,734 INFO L85 PathProgramCache]: Analyzing trace with hash 666383996, now seen corresponding path program 2 times [2024-06-04 15:18:06,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:18:06,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50371380] [2024-06-04 15:18:06,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:18:06,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:18:06,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:18:07,627 INFO 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 15:18:07,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:18:07,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50371380] [2024-06-04 15:18:07,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50371380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:18:07,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:18:07,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:18:07,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309792061] [2024-06-04 15:18:07,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:18:07,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:18:07,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:18:07,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:18:07,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:18:07,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:18:07,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 312 transitions, 2915 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:07,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:18:07,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:18:07,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:18:08,252 INFO L124 PetriNetUnfolderBase]: 899/1692 cut-off events. [2024-06-04 15:18:08,252 INFO L125 PetriNetUnfolderBase]: For 157636/157636 co-relation queries the response was YES. [2024-06-04 15:18:08,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8452 conditions, 1692 events. 899/1692 cut-off events. For 157636/157636 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 10344 event pairs, 165 based on Foata normal form. 10/1701 useless extension candidates. Maximal degree in co-relation 8268. Up to 1385 conditions per place. [2024-06-04 15:18:08,272 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 260 selfloop transitions, 71 changer transitions 14/347 dead transitions. [2024-06-04 15:18:08,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 347 transitions, 3767 flow [2024-06-04 15:18:08,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:18:08,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:18:08,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-04 15:18:08,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489583333333333 [2024-06-04 15:18:08,273 INFO L175 Difference]: Start difference. First operand has 401 places, 312 transitions, 2915 flow. Second operand 12 states and 134 transitions. [2024-06-04 15:18:08,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 347 transitions, 3767 flow [2024-06-04 15:18:08,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 347 transitions, 3673 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-04 15:18:08,972 INFO L231 Difference]: Finished difference. Result has 405 places, 313 transitions, 2996 flow [2024-06-04 15:18:08,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2821, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2996, PETRI_PLACES=405, PETRI_TRANSITIONS=313} [2024-06-04 15:18:08,972 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 374 predicate places. [2024-06-04 15:18:08,973 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 313 transitions, 2996 flow [2024-06-04 15:18:08,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:08,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:18:08,973 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 15:18:08,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-04 15:18:08,973 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 15:18:08,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:18:08,974 INFO L85 PathProgramCache]: Analyzing trace with hash -812307610, now seen corresponding path program 12 times [2024-06-04 15:18:08,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:18:08,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147068259] [2024-06-04 15:18:08,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:18:08,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:18:08,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:18:09,913 INFO 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 15:18:09,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:18:09,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147068259] [2024-06-04 15:18:09,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147068259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:18:09,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:18:09,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:18:09,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354392504] [2024-06-04 15:18:09,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:18:09,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:18:09,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:18:09,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:18:09,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:18:10,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:18:10,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 313 transitions, 2996 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:10,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:18:10,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:18:10,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:18:10,579 INFO L124 PetriNetUnfolderBase]: 857/1630 cut-off events. [2024-06-04 15:18:10,579 INFO L125 PetriNetUnfolderBase]: For 103545/103545 co-relation queries the response was YES. [2024-06-04 15:18:10,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8328 conditions, 1630 events. 857/1630 cut-off events. For 103545/103545 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 10065 event pairs, 183 based on Foata normal form. 2/1631 useless extension candidates. Maximal degree in co-relation 8141. Up to 1396 conditions per place. [2024-06-04 15:18:10,599 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 278 selfloop transitions, 55 changer transitions 0/335 dead transitions. [2024-06-04 15:18:10,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 335 transitions, 3748 flow [2024-06-04 15:18:10,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:18:10,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:18:10,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-04 15:18:10,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3385416666666667 [2024-06-04 15:18:10,600 INFO L175 Difference]: Start difference. First operand has 405 places, 313 transitions, 2996 flow. Second operand 12 states and 130 transitions. [2024-06-04 15:18:10,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 335 transitions, 3748 flow [2024-06-04 15:18:11,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 335 transitions, 3619 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-04 15:18:11,270 INFO L231 Difference]: Finished difference. Result has 406 places, 314 transitions, 3007 flow [2024-06-04 15:18:11,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2867, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3007, PETRI_PLACES=406, PETRI_TRANSITIONS=314} [2024-06-04 15:18:11,271 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 375 predicate places. [2024-06-04 15:18:11,271 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 314 transitions, 3007 flow [2024-06-04 15:18:11,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:11,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:18:11,271 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 15:18:11,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-04 15:18:11,271 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 15:18:11,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:18:11,272 INFO L85 PathProgramCache]: Analyzing trace with hash -809687414, now seen corresponding path program 13 times [2024-06-04 15:18:11,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:18:11,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449385768] [2024-06-04 15:18:11,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:18:11,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:18:11,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:18:12,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:18:12,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:18:12,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449385768] [2024-06-04 15:18:12,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449385768] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:18:12,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:18:12,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:18:12,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119043944] [2024-06-04 15:18:12,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:18:12,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:18:12,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:18:12,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:18:12,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:18:12,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:18:12,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 314 transitions, 3007 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:12,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:18:12,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:18:12,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:18:12,807 INFO L124 PetriNetUnfolderBase]: 861/1638 cut-off events. [2024-06-04 15:18:12,807 INFO L125 PetriNetUnfolderBase]: For 104161/104161 co-relation queries the response was YES. [2024-06-04 15:18:12,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8374 conditions, 1638 events. 861/1638 cut-off events. For 104161/104161 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 10146 event pairs, 181 based on Foata normal form. 2/1639 useless extension candidates. Maximal degree in co-relation 8187. Up to 1390 conditions per place. [2024-06-04 15:18:12,827 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 278 selfloop transitions, 56 changer transitions 0/336 dead transitions. [2024-06-04 15:18:12,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 336 transitions, 3761 flow [2024-06-04 15:18:12,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:18:12,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:18:12,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-04 15:18:12,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3411458333333333 [2024-06-04 15:18:12,829 INFO L175 Difference]: Start difference. First operand has 406 places, 314 transitions, 3007 flow. Second operand 12 states and 131 transitions. [2024-06-04 15:18:12,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 336 transitions, 3761 flow [2024-06-04 15:18:13,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 336 transitions, 3645 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-04 15:18:13,502 INFO L231 Difference]: Finished difference. Result has 410 places, 315 transitions, 3035 flow [2024-06-04 15:18:13,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2891, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3035, PETRI_PLACES=410, PETRI_TRANSITIONS=315} [2024-06-04 15:18:13,502 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 379 predicate places. [2024-06-04 15:18:13,502 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 315 transitions, 3035 flow [2024-06-04 15:18:13,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:13,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:18:13,503 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 15:18:13,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-04 15:18:13,503 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 15:18:13,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:18:13,503 INFO L85 PathProgramCache]: Analyzing trace with hash 187126200, now seen corresponding path program 14 times [2024-06-04 15:18:13,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:18:13,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088852905] [2024-06-04 15:18:13,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:18:13,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:18:13,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:18:14,450 INFO 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 15:18:14,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:18:14,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088852905] [2024-06-04 15:18:14,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088852905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:18:14,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:18:14,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:18:14,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400327615] [2024-06-04 15:18:14,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:18:14,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:18:14,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:18:14,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:18:14,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:18:14,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:18:14,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 315 transitions, 3035 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:14,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:18:14,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:18:14,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:18:15,194 INFO L124 PetriNetUnfolderBase]: 871/1656 cut-off events. [2024-06-04 15:18:15,195 INFO L125 PetriNetUnfolderBase]: For 105996/105996 co-relation queries the response was YES. [2024-06-04 15:18:15,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8475 conditions, 1656 events. 871/1656 cut-off events. For 105996/105996 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10253 event pairs, 169 based on Foata normal form. 2/1657 useless extension candidates. Maximal degree in co-relation 8287. Up to 1413 conditions per place. [2024-06-04 15:18:15,247 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 275 selfloop transitions, 62 changer transitions 0/339 dead transitions. [2024-06-04 15:18:15,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 339 transitions, 3811 flow [2024-06-04 15:18:15,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:18:15,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:18:15,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-04 15:18:15,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3411458333333333 [2024-06-04 15:18:15,248 INFO L175 Difference]: Start difference. First operand has 410 places, 315 transitions, 3035 flow. Second operand 12 states and 131 transitions. [2024-06-04 15:18:15,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 339 transitions, 3811 flow [2024-06-04 15:18:15,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 339 transitions, 3677 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-04 15:18:15,971 INFO L231 Difference]: Finished difference. Result has 413 places, 318 transitions, 3086 flow [2024-06-04 15:18:15,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2901, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3086, PETRI_PLACES=413, PETRI_TRANSITIONS=318} [2024-06-04 15:18:15,971 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 382 predicate places. [2024-06-04 15:18:15,971 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 318 transitions, 3086 flow [2024-06-04 15:18:15,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:15,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:18:15,972 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 15:18:15,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-04 15:18:15,972 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 15:18:15,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:18:15,972 INFO L85 PathProgramCache]: Analyzing trace with hash -809831564, now seen corresponding path program 15 times [2024-06-04 15:18:15,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:18:15,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247726494] [2024-06-04 15:18:15,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:18:15,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:18:15,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:18:16,805 INFO 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 15:18:16,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:18:16,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247726494] [2024-06-04 15:18:16,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247726494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:18:16,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:18:16,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:18:16,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955837238] [2024-06-04 15:18:16,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:18:16,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:18:16,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:18:16,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:18:16,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:18:16,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:18:16,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 318 transitions, 3086 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:16,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:18:16,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:18:16,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:18:17,379 INFO L124 PetriNetUnfolderBase]: 875/1664 cut-off events. [2024-06-04 15:18:17,379 INFO L125 PetriNetUnfolderBase]: For 107781/107781 co-relation queries the response was YES. [2024-06-04 15:18:17,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8567 conditions, 1664 events. 875/1664 cut-off events. For 107781/107781 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 10320 event pairs, 183 based on Foata normal form. 2/1665 useless extension candidates. Maximal degree in co-relation 8377. Up to 1394 conditions per place. [2024-06-04 15:18:17,398 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 281 selfloop transitions, 57 changer transitions 0/340 dead transitions. [2024-06-04 15:18:17,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 340 transitions, 3850 flow [2024-06-04 15:18:17,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:18:17,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:18:17,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-04 15:18:17,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 15:18:17,399 INFO L175 Difference]: Start difference. First operand has 413 places, 318 transitions, 3086 flow. Second operand 12 states and 132 transitions. [2024-06-04 15:18:17,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 340 transitions, 3850 flow [2024-06-04 15:18:18,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 340 transitions, 3715 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-04 15:18:18,085 INFO L231 Difference]: Finished difference. Result has 417 places, 319 transitions, 3101 flow [2024-06-04 15:18:18,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2951, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3101, PETRI_PLACES=417, PETRI_TRANSITIONS=319} [2024-06-04 15:18:18,086 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 386 predicate places. [2024-06-04 15:18:18,086 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 319 transitions, 3101 flow [2024-06-04 15:18:18,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:18,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:18:18,086 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 15:18:18,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-04 15:18:18,087 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 15:18:18,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:18:18,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1214038350, now seen corresponding path program 16 times [2024-06-04 15:18:18,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:18:18,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458878730] [2024-06-04 15:18:18,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:18:18,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:18:18,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:18:18,900 INFO 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 15:18:18,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:18:18,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458878730] [2024-06-04 15:18:18,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458878730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:18:18,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:18:18,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:18:18,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523491618] [2024-06-04 15:18:18,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:18:18,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:18:18,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:18:18,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:18:18,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:18:18,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:18:18,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 319 transitions, 3101 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:18,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:18:18,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:18:18,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:18:19,495 INFO L124 PetriNetUnfolderBase]: 915/1744 cut-off events. [2024-06-04 15:18:19,495 INFO L125 PetriNetUnfolderBase]: For 199971/199971 co-relation queries the response was YES. [2024-06-04 15:18:19,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10386 conditions, 1744 events. 915/1744 cut-off events. For 199971/199971 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 10823 event pairs, 203 based on Foata normal form. 2/1745 useless extension candidates. Maximal degree in co-relation 10195. Up to 1315 conditions per place. [2024-06-04 15:18:19,519 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 282 selfloop transitions, 63 changer transitions 0/347 dead transitions. [2024-06-04 15:18:19,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 347 transitions, 4187 flow [2024-06-04 15:18:19,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:18:19,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:18:19,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-04 15:18:19,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-04 15:18:19,520 INFO L175 Difference]: Start difference. First operand has 417 places, 319 transitions, 3101 flow. Second operand 12 states and 138 transitions. [2024-06-04 15:18:19,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 347 transitions, 4187 flow [2024-06-04 15:18:20,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 347 transitions, 4047 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-04 15:18:20,661 INFO L231 Difference]: Finished difference. Result has 419 places, 321 transitions, 3157 flow [2024-06-04 15:18:20,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2961, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3157, PETRI_PLACES=419, PETRI_TRANSITIONS=321} [2024-06-04 15:18:20,661 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 388 predicate places. [2024-06-04 15:18:20,661 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 321 transitions, 3157 flow [2024-06-04 15:18:20,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:20,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:18:20,662 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 15:18:20,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-04 15:18:20,662 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 15:18:20,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:18:20,662 INFO L85 PathProgramCache]: Analyzing trace with hash -14203876, now seen corresponding path program 17 times [2024-06-04 15:18:20,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:18:20,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123832050] [2024-06-04 15:18:20,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:18:20,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:18:20,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:18:21,506 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 15:18:21,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:18:21,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123832050] [2024-06-04 15:18:21,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123832050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:18:21,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:18:21,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:18:21,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477094622] [2024-06-04 15:18:21,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:18:21,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:18:21,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:18:21,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:18:21,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:18:21,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:18:21,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 321 transitions, 3157 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:21,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:18:21,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:18:21,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:18:22,042 INFO L124 PetriNetUnfolderBase]: 919/1752 cut-off events. [2024-06-04 15:18:22,042 INFO L125 PetriNetUnfolderBase]: For 203397/203397 co-relation queries the response was YES. [2024-06-04 15:18:22,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10471 conditions, 1752 events. 919/1752 cut-off events. For 203397/203397 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 10902 event pairs, 191 based on Foata normal form. 2/1753 useless extension candidates. Maximal degree in co-relation 10279. Up to 1509 conditions per place. [2024-06-04 15:18:22,066 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 274 selfloop transitions, 67 changer transitions 0/343 dead transitions. [2024-06-04 15:18:22,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 343 transitions, 3935 flow [2024-06-04 15:18:22,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:18:22,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:18:22,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-04 15:18:22,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3385416666666667 [2024-06-04 15:18:22,067 INFO L175 Difference]: Start difference. First operand has 419 places, 321 transitions, 3157 flow. Second operand 12 states and 130 transitions. [2024-06-04 15:18:22,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 343 transitions, 3935 flow [2024-06-04 15:18:23,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 343 transitions, 3823 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-04 15:18:23,131 INFO L231 Difference]: Finished difference. Result has 423 places, 322 transitions, 3219 flow [2024-06-04 15:18:23,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3049, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3219, PETRI_PLACES=423, PETRI_TRANSITIONS=322} [2024-06-04 15:18:23,132 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 392 predicate places. [2024-06-04 15:18:23,132 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 322 transitions, 3219 flow [2024-06-04 15:18:23,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:23,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:18:23,133 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 15:18:23,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-04 15:18:23,133 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 15:18:23,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:18:23,133 INFO L85 PathProgramCache]: Analyzing trace with hash 386422410, now seen corresponding path program 18 times [2024-06-04 15:18:23,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:18:23,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962482464] [2024-06-04 15:18:23,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:18:23,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:18:23,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:18:23,974 INFO 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 15:18:23,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:18:23,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962482464] [2024-06-04 15:18:23,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962482464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:18:23,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:18:23,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:18:23,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644900025] [2024-06-04 15:18:23,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:18:23,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:18:23,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:18:23,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:18:23,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:18:24,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:18:24,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 322 transitions, 3219 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:24,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:18:24,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:18:24,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:18:24,681 INFO L124 PetriNetUnfolderBase]: 930/1773 cut-off events. [2024-06-04 15:18:24,681 INFO L125 PetriNetUnfolderBase]: For 222247/222247 co-relation queries the response was YES. [2024-06-04 15:18:24,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10984 conditions, 1773 events. 930/1773 cut-off events. For 222247/222247 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 11035 event pairs, 190 based on Foata normal form. 2/1774 useless extension candidates. Maximal degree in co-relation 10790. Up to 1442 conditions per place. [2024-06-04 15:18:24,706 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 279 selfloop transitions, 69 changer transitions 0/350 dead transitions. [2024-06-04 15:18:24,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 350 transitions, 4319 flow [2024-06-04 15:18:24,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:18:24,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:18:24,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-04 15:18:24,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-04 15:18:24,707 INFO L175 Difference]: Start difference. First operand has 423 places, 322 transitions, 3219 flow. Second operand 12 states and 136 transitions. [2024-06-04 15:18:24,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 350 transitions, 4319 flow [2024-06-04 15:18:25,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 350 transitions, 4160 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-04 15:18:25,734 INFO L231 Difference]: Finished difference. Result has 426 places, 324 transitions, 3268 flow [2024-06-04 15:18:25,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3060, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3268, PETRI_PLACES=426, PETRI_TRANSITIONS=324} [2024-06-04 15:18:25,735 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 395 predicate places. [2024-06-04 15:18:25,735 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 324 transitions, 3268 flow [2024-06-04 15:18:25,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:25,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:18:25,735 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 15:18:25,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-04 15:18:25,735 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 15:18:25,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:18:25,736 INFO L85 PathProgramCache]: Analyzing trace with hash 184494844, now seen corresponding path program 19 times [2024-06-04 15:18:25,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:18:25,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427376036] [2024-06-04 15:18:25,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:18:25,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:18:25,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:18:26,625 INFO 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 15:18:26,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:18:26,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427376036] [2024-06-04 15:18:26,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427376036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:18:26,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:18:26,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:18:26,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689844286] [2024-06-04 15:18:26,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:18:26,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:18:26,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:18:26,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:18:26,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:18:26,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:18:26,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 324 transitions, 3268 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:26,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:18:26,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:18:26,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:18:27,318 INFO L124 PetriNetUnfolderBase]: 934/1781 cut-off events. [2024-06-04 15:18:27,319 INFO L125 PetriNetUnfolderBase]: For 226063/226063 co-relation queries the response was YES. [2024-06-04 15:18:27,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11063 conditions, 1781 events. 934/1781 cut-off events. For 226063/226063 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 11068 event pairs, 196 based on Foata normal form. 2/1782 useless extension candidates. Maximal degree in co-relation 10868. Up to 1524 conditions per place. [2024-06-04 15:18:27,343 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 281 selfloop transitions, 63 changer transitions 0/346 dead transitions. [2024-06-04 15:18:27,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 346 transitions, 4050 flow [2024-06-04 15:18:27,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:18:27,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:18:27,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-04 15:18:27,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 15:18:27,344 INFO L175 Difference]: Start difference. First operand has 426 places, 324 transitions, 3268 flow. Second operand 12 states and 132 transitions. [2024-06-04 15:18:27,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 346 transitions, 4050 flow [2024-06-04 15:18:28,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 346 transitions, 3930 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-04 15:18:28,420 INFO L231 Difference]: Finished difference. Result has 430 places, 325 transitions, 3314 flow [2024-06-04 15:18:28,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3148, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3314, PETRI_PLACES=430, PETRI_TRANSITIONS=325} [2024-06-04 15:18:28,420 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 399 predicate places. [2024-06-04 15:18:28,420 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 325 transitions, 3314 flow [2024-06-04 15:18:28,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:28,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:18:28,421 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 15:18:28,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-04 15:18:28,421 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 15:18:28,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:18:28,421 INFO L85 PathProgramCache]: Analyzing trace with hash 184350694, now seen corresponding path program 20 times [2024-06-04 15:18:28,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:18:28,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387104524] [2024-06-04 15:18:28,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:18:28,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:18:28,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:18:29,304 INFO 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 15:18:29,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:18:29,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387104524] [2024-06-04 15:18:29,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387104524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:18:29,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:18:29,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:18:29,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910737513] [2024-06-04 15:18:29,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:18:29,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:18:29,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:18:29,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:18:29,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:18:29,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:18:29,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 325 transitions, 3314 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:29,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:18:29,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:18:29,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:18:29,956 INFO L124 PetriNetUnfolderBase]: 931/1776 cut-off events. [2024-06-04 15:18:29,956 INFO L125 PetriNetUnfolderBase]: For 213157/213157 co-relation queries the response was YES. [2024-06-04 15:18:29,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10822 conditions, 1776 events. 931/1776 cut-off events. For 213157/213157 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 11083 event pairs, 193 based on Foata normal form. 2/1777 useless extension candidates. Maximal degree in co-relation 10625. Up to 1403 conditions per place. [2024-06-04 15:18:29,980 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 282 selfloop transitions, 67 changer transitions 0/351 dead transitions. [2024-06-04 15:18:29,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 351 transitions, 4354 flow [2024-06-04 15:18:29,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:18:29,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:18:29,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-04 15:18:29,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-04 15:18:29,982 INFO L175 Difference]: Start difference. First operand has 430 places, 325 transitions, 3314 flow. Second operand 12 states and 137 transitions. [2024-06-04 15:18:29,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 351 transitions, 4354 flow [2024-06-04 15:18:31,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 351 transitions, 4200 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-04 15:18:31,253 INFO L231 Difference]: Finished difference. Result has 432 places, 325 transitions, 3298 flow [2024-06-04 15:18:31,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3160, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3298, PETRI_PLACES=432, PETRI_TRANSITIONS=325} [2024-06-04 15:18:31,265 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 401 predicate places. [2024-06-04 15:18:31,265 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 325 transitions, 3298 flow [2024-06-04 15:18:31,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:31,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:18:31,266 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 15:18:31,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-04 15:18:31,266 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 15:18:31,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:18:31,266 INFO L85 PathProgramCache]: Analyzing trace with hash 393779640, now seen corresponding path program 21 times [2024-06-04 15:18:31,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:18:31,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659893897] [2024-06-04 15:18:31,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:18:31,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:18:31,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:18:32,127 INFO 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 15:18:32,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:18:32,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659893897] [2024-06-04 15:18:32,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659893897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:18:32,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:18:32,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:18:32,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646962454] [2024-06-04 15:18:32,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:18:32,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:18:32,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:18:32,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:18:32,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:18:32,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:18:32,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 325 transitions, 3298 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:32,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:18:32,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:18:32,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:18:32,728 INFO L124 PetriNetUnfolderBase]: 915/1748 cut-off events. [2024-06-04 15:18:32,728 INFO L125 PetriNetUnfolderBase]: For 199759/199759 co-relation queries the response was YES. [2024-06-04 15:18:32,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9167 conditions, 1748 events. 915/1748 cut-off events. For 199759/199759 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 10936 event pairs, 181 based on Foata normal form. 12/1759 useless extension candidates. Maximal degree in co-relation 8969. Up to 1463 conditions per place. [2024-06-04 15:18:32,751 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 271 selfloop transitions, 70 changer transitions 7/350 dead transitions. [2024-06-04 15:18:32,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 350 transitions, 4084 flow [2024-06-04 15:18:32,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:18:32,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:18:32,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-04 15:18:32,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489583333333333 [2024-06-04 15:18:32,752 INFO L175 Difference]: Start difference. First operand has 432 places, 325 transitions, 3298 flow. Second operand 12 states and 134 transitions. [2024-06-04 15:18:32,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 350 transitions, 4084 flow [2024-06-04 15:18:33,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 350 transitions, 3840 flow, removed 27 selfloop flow, removed 12 redundant places. [2024-06-04 15:18:33,695 INFO L231 Difference]: Finished difference. Result has 432 places, 322 transitions, 3168 flow [2024-06-04 15:18:33,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3054, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3168, PETRI_PLACES=432, PETRI_TRANSITIONS=322} [2024-06-04 15:18:33,695 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 401 predicate places. [2024-06-04 15:18:33,695 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 322 transitions, 3168 flow [2024-06-04 15:18:33,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:33,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:18:33,696 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 15:18:33,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-04 15:18:33,696 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 15:18:33,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:18:33,697 INFO L85 PathProgramCache]: Analyzing trace with hash 394056346, now seen corresponding path program 3 times [2024-06-04 15:18:33,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:18:33,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113967467] [2024-06-04 15:18:33,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:18:33,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:18:33,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:18:34,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:18:34,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:18:34,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113967467] [2024-06-04 15:18:34,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113967467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:18:34,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:18:34,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:18:34,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791822189] [2024-06-04 15:18:34,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:18:34,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:18:34,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:18:34,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:18:34,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:18:34,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:18:34,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 322 transitions, 3168 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:34,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:18:34,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:18:34,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:18:35,148 INFO L124 PetriNetUnfolderBase]: 918/1761 cut-off events. [2024-06-04 15:18:35,149 INFO L125 PetriNetUnfolderBase]: For 218215/218215 co-relation queries the response was YES. [2024-06-04 15:18:35,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9746 conditions, 1761 events. 918/1761 cut-off events. For 218215/218215 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 10991 event pairs, 184 based on Foata normal form. 8/1768 useless extension candidates. Maximal degree in co-relation 9548. Up to 1387 conditions per place. [2024-06-04 15:18:35,172 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 272 selfloop transitions, 67 changer transitions 8/349 dead transitions. [2024-06-04 15:18:35,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 349 transitions, 4212 flow [2024-06-04 15:18:35,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:18:35,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:18:35,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-04 15:18:35,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-04 15:18:35,174 INFO L175 Difference]: Start difference. First operand has 432 places, 322 transitions, 3168 flow. Second operand 12 states and 135 transitions. [2024-06-04 15:18:35,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 349 transitions, 4212 flow [2024-06-04 15:18:36,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 349 transitions, 4030 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-04 15:18:36,346 INFO L231 Difference]: Finished difference. Result has 431 places, 319 transitions, 3086 flow [2024-06-04 15:18:36,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2986, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3086, PETRI_PLACES=431, PETRI_TRANSITIONS=319} [2024-06-04 15:18:36,346 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 400 predicate places. [2024-06-04 15:18:36,346 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 319 transitions, 3086 flow [2024-06-04 15:18:36,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:36,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:18:36,347 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 15:18:36,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-04 15:18:36,347 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 15:18:36,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:18:36,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1300976766, now seen corresponding path program 22 times [2024-06-04 15:18:36,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:18:36,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190179012] [2024-06-04 15:18:36,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:18:36,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:18:36,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:18:37,140 INFO 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 15:18:37,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:18:37,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190179012] [2024-06-04 15:18:37,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190179012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:18:37,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:18:37,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:18:37,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543474007] [2024-06-04 15:18:37,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:18:37,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:18:37,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:18:37,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:18:37,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:18:37,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:18:37,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 319 transitions, 3086 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:37,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:18:37,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:18:37,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:18:37,814 INFO L124 PetriNetUnfolderBase]: 903/1728 cut-off events. [2024-06-04 15:18:37,815 INFO L125 PetriNetUnfolderBase]: For 172331/172331 co-relation queries the response was YES. [2024-06-04 15:18:37,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9633 conditions, 1728 events. 903/1728 cut-off events. For 172331/172331 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 10732 event pairs, 199 based on Foata normal form. 2/1729 useless extension candidates. Maximal degree in co-relation 9434. Up to 1495 conditions per place. [2024-06-04 15:18:37,837 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 297 selfloop transitions, 40 changer transitions 0/339 dead transitions. [2024-06-04 15:18:37,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 339 transitions, 3838 flow [2024-06-04 15:18:37,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:18:37,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:18:37,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-04 15:18:37,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-04 15:18:37,838 INFO L175 Difference]: Start difference. First operand has 431 places, 319 transitions, 3086 flow. Second operand 11 states and 110 transitions. [2024-06-04 15:18:37,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 339 transitions, 3838 flow [2024-06-04 15:18:38,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 339 transitions, 3700 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-04 15:18:38,864 INFO L231 Difference]: Finished difference. Result has 426 places, 320 transitions, 3074 flow [2024-06-04 15:18:38,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2948, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3074, PETRI_PLACES=426, PETRI_TRANSITIONS=320} [2024-06-04 15:18:38,865 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 395 predicate places. [2024-06-04 15:18:38,865 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 320 transitions, 3074 flow [2024-06-04 15:18:38,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:38,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:18:38,865 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 15:18:38,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-04 15:18:38,865 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 15:18:38,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:18:38,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1225583230, now seen corresponding path program 23 times [2024-06-04 15:18:38,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:18:38,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430554161] [2024-06-04 15:18:38,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:18:38,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:18:38,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:18:39,699 INFO 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 15:18:39,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:18:39,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430554161] [2024-06-04 15:18:39,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430554161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:18:39,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:18:39,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:18:39,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093838099] [2024-06-04 15:18:39,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:18:39,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:18:39,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:18:39,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:18:39,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:18:39,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:18:39,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 320 transitions, 3074 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:39,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:18:39,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:18:39,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:18:40,306 INFO L124 PetriNetUnfolderBase]: 914/1749 cut-off events. [2024-06-04 15:18:40,307 INFO L125 PetriNetUnfolderBase]: For 189830/189830 co-relation queries the response was YES. [2024-06-04 15:18:40,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10093 conditions, 1749 events. 914/1749 cut-off events. For 189830/189830 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 10920 event pairs, 206 based on Foata normal form. 2/1750 useless extension candidates. Maximal degree in co-relation 9897. Up to 1416 conditions per place. [2024-06-04 15:18:40,329 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 273 selfloop transitions, 67 changer transitions 0/342 dead transitions. [2024-06-04 15:18:40,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 342 transitions, 4136 flow [2024-06-04 15:18:40,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:18:40,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:18:40,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-04 15:18:40,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3352272727272727 [2024-06-04 15:18:40,330 INFO L175 Difference]: Start difference. First operand has 426 places, 320 transitions, 3074 flow. Second operand 11 states and 118 transitions. [2024-06-04 15:18:40,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 342 transitions, 4136 flow [2024-06-04 15:18:41,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 342 transitions, 4008 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-04 15:18:41,383 INFO L231 Difference]: Finished difference. Result has 428 places, 322 transitions, 3168 flow [2024-06-04 15:18:41,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2964, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3168, PETRI_PLACES=428, PETRI_TRANSITIONS=322} [2024-06-04 15:18:41,384 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 397 predicate places. [2024-06-04 15:18:41,384 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 322 transitions, 3168 flow [2024-06-04 15:18:41,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:41,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:18:41,385 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 15:18:41,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-04 15:18:41,385 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 15:18:41,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:18:41,385 INFO L85 PathProgramCache]: Analyzing trace with hash 503608254, now seen corresponding path program 24 times [2024-06-04 15:18:41,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:18:41,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960726378] [2024-06-04 15:18:41,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:18:41,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:18:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:18:42,248 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 15:18:42,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:18:42,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960726378] [2024-06-04 15:18:42,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960726378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:18:42,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:18:42,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:18:42,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483059533] [2024-06-04 15:18:42,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:18:42,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:18:42,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:18:42,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:18:42,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:18:42,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:18:42,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 322 transitions, 3168 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:42,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:18:42,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:18:42,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:18:42,874 INFO L124 PetriNetUnfolderBase]: 918/1757 cut-off events. [2024-06-04 15:18:42,874 INFO L125 PetriNetUnfolderBase]: For 184108/184108 co-relation queries the response was YES. [2024-06-04 15:18:42,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10118 conditions, 1757 events. 918/1757 cut-off events. For 184108/184108 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 10998 event pairs, 217 based on Foata normal form. 2/1758 useless extension candidates. Maximal degree in co-relation 9921. Up to 1492 conditions per place. [2024-06-04 15:18:42,898 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 273 selfloop transitions, 68 changer transitions 0/343 dead transitions. [2024-06-04 15:18:42,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 343 transitions, 4190 flow [2024-06-04 15:18:42,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:18:42,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:18:42,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-04 15:18:42,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-04 15:18:42,899 INFO L175 Difference]: Start difference. First operand has 428 places, 322 transitions, 3168 flow. Second operand 11 states and 117 transitions. [2024-06-04 15:18:42,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 343 transitions, 4190 flow [2024-06-04 15:18:43,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 343 transitions, 4068 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-04 15:18:43,945 INFO L231 Difference]: Finished difference. Result has 430 places, 323 transitions, 3226 flow [2024-06-04 15:18:43,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3054, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3226, PETRI_PLACES=430, PETRI_TRANSITIONS=323} [2024-06-04 15:18:43,945 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 399 predicate places. [2024-06-04 15:18:43,945 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 323 transitions, 3226 flow [2024-06-04 15:18:43,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:43,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:18:43,945 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 15:18:43,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-04 15:18:43,946 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 15:18:43,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:18:43,946 INFO L85 PathProgramCache]: Analyzing trace with hash 503613834, now seen corresponding path program 25 times [2024-06-04 15:18:43,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:18:43,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791910748] [2024-06-04 15:18:43,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:18:43,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:18:43,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:18:44,767 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 15:18:44,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:18:44,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791910748] [2024-06-04 15:18:44,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791910748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:18:44,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:18:44,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:18:44,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868411339] [2024-06-04 15:18:44,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:18:44,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:18:44,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:18:44,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:18:44,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:18:44,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:18:44,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 323 transitions, 3226 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:44,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:18:44,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:18:44,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:18:45,398 INFO L124 PetriNetUnfolderBase]: 915/1752 cut-off events. [2024-06-04 15:18:45,398 INFO L125 PetriNetUnfolderBase]: For 164736/164736 co-relation queries the response was YES. [2024-06-04 15:18:45,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9855 conditions, 1752 events. 915/1752 cut-off events. For 164736/164736 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 10946 event pairs, 225 based on Foata normal form. 2/1753 useless extension candidates. Maximal degree in co-relation 9658. Up to 1538 conditions per place. [2024-06-04 15:18:45,424 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 272 selfloop transitions, 68 changer transitions 0/342 dead transitions. [2024-06-04 15:18:45,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 342 transitions, 3958 flow [2024-06-04 15:18:45,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:18:45,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:18:45,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-04 15:18:45,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-04 15:18:45,425 INFO L175 Difference]: Start difference. First operand has 430 places, 323 transitions, 3226 flow. Second operand 11 states and 115 transitions. [2024-06-04 15:18:45,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 342 transitions, 3958 flow [2024-06-04 15:18:46,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 342 transitions, 3771 flow, removed 22 selfloop flow, removed 11 redundant places. [2024-06-04 15:18:46,484 INFO L231 Difference]: Finished difference. Result has 430 places, 323 transitions, 3187 flow [2024-06-04 15:18:46,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3039, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3187, PETRI_PLACES=430, PETRI_TRANSITIONS=323} [2024-06-04 15:18:46,485 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 399 predicate places. [2024-06-04 15:18:46,485 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 323 transitions, 3187 flow [2024-06-04 15:18:46,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:46,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:18:46,485 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 15:18:46,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-04 15:18:46,485 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 15:18:46,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:18:46,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1229158150, now seen corresponding path program 26 times [2024-06-04 15:18:46,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:18:46,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204986588] [2024-06-04 15:18:46,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:18:46,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:18:46,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:18:47,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:18:47,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:18:47,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204986588] [2024-06-04 15:18:47,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204986588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:18:47,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:18:47,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:18:47,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299001947] [2024-06-04 15:18:47,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:18:47,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:18:47,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:18:47,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:18:47,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:18:47,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:18:47,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 323 transitions, 3187 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:47,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:18:47,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:18:47,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:18:47,897 INFO L124 PetriNetUnfolderBase]: 919/1760 cut-off events. [2024-06-04 15:18:47,897 INFO L125 PetriNetUnfolderBase]: For 162084/162084 co-relation queries the response was YES. [2024-06-04 15:18:47,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9830 conditions, 1760 events. 919/1760 cut-off events. For 162084/162084 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 11021 event pairs, 210 based on Foata normal form. 2/1761 useless extension candidates. Maximal degree in co-relation 9634. Up to 1330 conditions per place. [2024-06-04 15:18:47,923 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 273 selfloop transitions, 68 changer transitions 0/343 dead transitions. [2024-06-04 15:18:47,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 343 transitions, 3945 flow [2024-06-04 15:18:47,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:18:47,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:18:47,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-04 15:18:47,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3352272727272727 [2024-06-04 15:18:47,924 INFO L175 Difference]: Start difference. First operand has 430 places, 323 transitions, 3187 flow. Second operand 11 states and 118 transitions. [2024-06-04 15:18:47,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 343 transitions, 3945 flow [2024-06-04 15:18:49,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 343 transitions, 3789 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-04 15:18:49,024 INFO L231 Difference]: Finished difference. Result has 429 places, 324 transitions, 3207 flow [2024-06-04 15:18:49,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3031, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3207, PETRI_PLACES=429, PETRI_TRANSITIONS=324} [2024-06-04 15:18:49,025 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 398 predicate places. [2024-06-04 15:18:49,025 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 324 transitions, 3207 flow [2024-06-04 15:18:49,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:49,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:18:49,025 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 15:18:49,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-04 15:18:49,026 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 15:18:49,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:18:49,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1940802400, now seen corresponding path program 4 times [2024-06-04 15:18:49,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:18:49,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239062368] [2024-06-04 15:18:49,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:18:49,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:18:49,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:18:49,919 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 15:18:49,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:18:49,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239062368] [2024-06-04 15:18:49,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239062368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:18:49,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:18:49,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:18:49,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384742563] [2024-06-04 15:18:49,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:18:49,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:18:49,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:18:49,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:18:49,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:18:50,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:18:50,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 324 transitions, 3207 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:50,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:18:50,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:18:50,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:18:50,569 INFO L124 PetriNetUnfolderBase]: 935/1796 cut-off events. [2024-06-04 15:18:50,569 INFO L125 PetriNetUnfolderBase]: For 221282/221282 co-relation queries the response was YES. [2024-06-04 15:18:50,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9935 conditions, 1796 events. 935/1796 cut-off events. For 221282/221282 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 11275 event pairs, 180 based on Foata normal form. 10/1805 useless extension candidates. Maximal degree in co-relation 9740. Up to 1365 conditions per place. [2024-06-04 15:18:50,597 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 230 selfloop transitions, 101 changer transitions 13/346 dead transitions. [2024-06-04 15:18:50,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 346 transitions, 3973 flow [2024-06-04 15:18:50,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:18:50,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:18:50,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-04 15:18:50,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-04 15:18:50,599 INFO L175 Difference]: Start difference. First operand has 429 places, 324 transitions, 3207 flow. Second operand 11 states and 123 transitions. [2024-06-04 15:18:50,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 346 transitions, 3973 flow [2024-06-04 15:18:51,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 346 transitions, 3811 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-04 15:18:51,785 INFO L231 Difference]: Finished difference. Result has 430 places, 316 transitions, 3169 flow [2024-06-04 15:18:51,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3045, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3169, PETRI_PLACES=430, PETRI_TRANSITIONS=316} [2024-06-04 15:18:51,786 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 399 predicate places. [2024-06-04 15:18:51,787 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 316 transitions, 3169 flow [2024-06-04 15:18:51,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:51,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:18:51,787 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 15:18:51,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-04 15:18:51,787 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 15:18:51,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:18:51,787 INFO L85 PathProgramCache]: Analyzing trace with hash 875473290, now seen corresponding path program 27 times [2024-06-04 15:18:51,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:18:51,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495533437] [2024-06-04 15:18:51,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:18:51,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:18:51,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:18:52,724 INFO 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 15:18:52,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:18:52,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495533437] [2024-06-04 15:18:52,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495533437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:18:52,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:18:52,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:18:52,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956376621] [2024-06-04 15:18:52,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:18:52,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:18:52,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:18:52,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:18:52,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:18:52,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:18:52,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 316 transitions, 3169 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:52,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:18:52,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:18:52,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:18:53,392 INFO L124 PetriNetUnfolderBase]: 895/1736 cut-off events. [2024-06-04 15:18:53,392 INFO L125 PetriNetUnfolderBase]: For 156789/156789 co-relation queries the response was YES. [2024-06-04 15:18:53,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9709 conditions, 1736 events. 895/1736 cut-off events. For 156789/156789 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 10999 event pairs, 204 based on Foata normal form. 2/1737 useless extension candidates. Maximal degree in co-relation 9514. Up to 1361 conditions per place. [2024-06-04 15:18:53,416 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 252 selfloop transitions, 81 changer transitions 0/335 dead transitions. [2024-06-04 15:18:53,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 335 transitions, 3915 flow [2024-06-04 15:18:53,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:18:53,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:18:53,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-04 15:18:53,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 15:18:53,418 INFO L175 Difference]: Start difference. First operand has 430 places, 316 transitions, 3169 flow. Second operand 11 states and 121 transitions. [2024-06-04 15:18:53,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 335 transitions, 3915 flow [2024-06-04 15:18:54,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 335 transitions, 3703 flow, removed 1 selfloop flow, removed 13 redundant places. [2024-06-04 15:18:54,348 INFO L231 Difference]: Finished difference. Result has 428 places, 317 transitions, 3157 flow [2024-06-04 15:18:54,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2957, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3157, PETRI_PLACES=428, PETRI_TRANSITIONS=317} [2024-06-04 15:18:54,348 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 397 predicate places. [2024-06-04 15:18:54,348 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 317 transitions, 3157 flow [2024-06-04 15:18:54,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:54,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:18:54,349 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 15:18:54,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-04 15:18:54,349 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 15:18:54,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:18:54,349 INFO L85 PathProgramCache]: Analyzing trace with hash 477842756, now seen corresponding path program 28 times [2024-06-04 15:18:54,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:18:54,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729661294] [2024-06-04 15:18:54,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:18:54,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:18:54,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:18:55,196 INFO 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 15:18:55,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:18:55,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729661294] [2024-06-04 15:18:55,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729661294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:18:55,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:18:55,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:18:55,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730804865] [2024-06-04 15:18:55,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:18:55,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:18:55,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:18:55,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:18:55,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:18:55,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:18:55,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 317 transitions, 3157 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:55,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:18:55,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:18:55,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:18:55,899 INFO L124 PetriNetUnfolderBase]: 899/1744 cut-off events. [2024-06-04 15:18:55,899 INFO L125 PetriNetUnfolderBase]: For 157625/157625 co-relation queries the response was YES. [2024-06-04 15:18:55,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9722 conditions, 1744 events. 899/1744 cut-off events. For 157625/157625 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 11059 event pairs, 184 based on Foata normal form. 2/1745 useless extension candidates. Maximal degree in co-relation 9528. Up to 1369 conditions per place. [2024-06-04 15:18:55,928 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 247 selfloop transitions, 87 changer transitions 0/336 dead transitions. [2024-06-04 15:18:55,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 336 transitions, 3907 flow [2024-06-04 15:18:55,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:18:55,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:18:55,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-04 15:18:55,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-04 15:18:55,929 INFO L175 Difference]: Start difference. First operand has 428 places, 317 transitions, 3157 flow. Second operand 11 states and 120 transitions. [2024-06-04 15:18:55,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 336 transitions, 3907 flow [2024-06-04 15:18:57,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 336 transitions, 3719 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-04 15:18:57,027 INFO L231 Difference]: Finished difference. Result has 430 places, 318 transitions, 3183 flow [2024-06-04 15:18:57,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2971, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3183, PETRI_PLACES=430, PETRI_TRANSITIONS=318} [2024-06-04 15:18:57,028 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 399 predicate places. [2024-06-04 15:18:57,028 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 318 transitions, 3183 flow [2024-06-04 15:18:57,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:57,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:18:57,028 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 15:18:57,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-04 15:18:57,028 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 15:18:57,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:18:57,029 INFO L85 PathProgramCache]: Analyzing trace with hash -518970858, now seen corresponding path program 29 times [2024-06-04 15:18:57,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:18:57,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649705725] [2024-06-04 15:18:57,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:18:57,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:18:57,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:18:57,919 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 15:18:57,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:18:57,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649705725] [2024-06-04 15:18:57,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649705725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:18:57,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:18:57,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:18:57,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757368877] [2024-06-04 15:18:57,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:18:57,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:18:57,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:18:57,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:18:57,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:18:58,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:18:58,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 318 transitions, 3183 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:58,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:18:58,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:18:58,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:18:58,529 INFO L124 PetriNetUnfolderBase]: 903/1752 cut-off events. [2024-06-04 15:18:58,529 INFO L125 PetriNetUnfolderBase]: For 157651/157651 co-relation queries the response was YES. [2024-06-04 15:18:58,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9777 conditions, 1752 events. 903/1752 cut-off events. For 157651/157651 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 11125 event pairs, 202 based on Foata normal form. 2/1753 useless extension candidates. Maximal degree in co-relation 9582. Up to 1349 conditions per place. [2024-06-04 15:18:58,552 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 252 selfloop transitions, 83 changer transitions 0/337 dead transitions. [2024-06-04 15:18:58,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 337 transitions, 3933 flow [2024-06-04 15:18:58,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:18:58,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:18:58,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-04 15:18:58,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-04 15:18:58,554 INFO L175 Difference]: Start difference. First operand has 430 places, 318 transitions, 3183 flow. Second operand 11 states and 122 transitions. [2024-06-04 15:18:58,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 337 transitions, 3933 flow [2024-06-04 15:18:59,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 337 transitions, 3729 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-04 15:18:59,577 INFO L231 Difference]: Finished difference. Result has 431 places, 319 transitions, 3185 flow [2024-06-04 15:18:59,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2981, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3185, PETRI_PLACES=431, PETRI_TRANSITIONS=319} [2024-06-04 15:18:59,577 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 400 predicate places. [2024-06-04 15:18:59,577 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 319 transitions, 3185 flow [2024-06-04 15:18:59,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:59,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:18:59,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:18:59,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-04 15:18:59,578 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 15:18:59,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:18:59,578 INFO L85 PathProgramCache]: Analyzing trace with hash 477837176, now seen corresponding path program 30 times [2024-06-04 15:18:59,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:18:59,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082310278] [2024-06-04 15:18:59,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:18:59,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:18:59,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:19:00,423 INFO 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 15:19:00,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:19:00,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082310278] [2024-06-04 15:19:00,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082310278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:19:00,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:19:00,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:19:00,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499028952] [2024-06-04 15:19:00,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:19:00,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:19:00,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:19:00,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:19:00,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:19:00,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:19:00,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 319 transitions, 3185 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:00,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:19:00,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:19:00,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:19:01,116 INFO L124 PetriNetUnfolderBase]: 907/1760 cut-off events. [2024-06-04 15:19:01,117 INFO L125 PetriNetUnfolderBase]: For 157677/157677 co-relation queries the response was YES. [2024-06-04 15:19:01,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9795 conditions, 1760 events. 907/1760 cut-off events. For 157677/157677 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 11218 event pairs, 182 based on Foata normal form. 2/1761 useless extension candidates. Maximal degree in co-relation 9600. Up to 1357 conditions per place. [2024-06-04 15:19:01,159 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 247 selfloop transitions, 89 changer transitions 0/338 dead transitions. [2024-06-04 15:19:01,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 338 transitions, 3937 flow [2024-06-04 15:19:01,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:19:01,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:19:01,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-04 15:19:01,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 15:19:01,163 INFO L175 Difference]: Start difference. First operand has 431 places, 319 transitions, 3185 flow. Second operand 11 states and 121 transitions. [2024-06-04 15:19:01,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 338 transitions, 3937 flow [2024-06-04 15:19:02,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 338 transitions, 3741 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-04 15:19:02,336 INFO L231 Difference]: Finished difference. Result has 432 places, 320 transitions, 3207 flow [2024-06-04 15:19:02,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2991, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3207, PETRI_PLACES=432, PETRI_TRANSITIONS=320} [2024-06-04 15:19:02,337 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 401 predicate places. [2024-06-04 15:19:02,337 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 320 transitions, 3207 flow [2024-06-04 15:19:02,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:02,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:19:02,337 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 15:19:02,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-04 15:19:02,338 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 15:19:02,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:19:02,338 INFO L85 PathProgramCache]: Analyzing trace with hash -519115008, now seen corresponding path program 31 times [2024-06-04 15:19:02,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:19:02,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415449800] [2024-06-04 15:19:02,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:19:02,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:19:02,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:19:03,213 INFO 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 15:19:03,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:19:03,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415449800] [2024-06-04 15:19:03,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415449800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:19:03,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:19:03,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:19:03,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818541233] [2024-06-04 15:19:03,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:19:03,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:19:03,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:19:03,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:19:03,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:19:03,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:19:03,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 320 transitions, 3207 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:03,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:19:03,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:19:03,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:19:03,862 INFO L124 PetriNetUnfolderBase]: 911/1768 cut-off events. [2024-06-04 15:19:03,862 INFO L125 PetriNetUnfolderBase]: For 157725/157725 co-relation queries the response was YES. [2024-06-04 15:19:03,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9845 conditions, 1768 events. 911/1768 cut-off events. For 157725/157725 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 11292 event pairs, 200 based on Foata normal form. 2/1769 useless extension candidates. Maximal degree in co-relation 9650. Up to 1321 conditions per place. [2024-06-04 15:19:03,885 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 252 selfloop transitions, 85 changer transitions 0/339 dead transitions. [2024-06-04 15:19:03,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 339 transitions, 3959 flow [2024-06-04 15:19:03,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:19:03,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:19:03,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-04 15:19:03,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-04 15:19:03,886 INFO L175 Difference]: Start difference. First operand has 432 places, 320 transitions, 3207 flow. Second operand 11 states and 123 transitions. [2024-06-04 15:19:03,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 339 transitions, 3959 flow [2024-06-04 15:19:04,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 339 transitions, 3751 flow, removed 15 selfloop flow, removed 11 redundant places. [2024-06-04 15:19:04,879 INFO L231 Difference]: Finished difference. Result has 432 places, 321 transitions, 3209 flow [2024-06-04 15:19:04,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2999, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3209, PETRI_PLACES=432, PETRI_TRANSITIONS=321} [2024-06-04 15:19:04,880 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 401 predicate places. [2024-06-04 15:19:04,880 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 321 transitions, 3209 flow [2024-06-04 15:19:04,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:04,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:19:04,880 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 15:19:04,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-04 15:19:04,881 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 15:19:04,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:19:04,881 INFO L85 PathProgramCache]: Analyzing trace with hash 684496196, now seen corresponding path program 32 times [2024-06-04 15:19:04,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:19:04,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762806564] [2024-06-04 15:19:04,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:19:04,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:19:04,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:19:05,806 INFO 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 15:19:05,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:19:05,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762806564] [2024-06-04 15:19:05,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762806564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:19:05,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:19:05,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:19:05,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956403205] [2024-06-04 15:19:05,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:19:05,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:19:05,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:19:05,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:19:05,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:19:05,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:19:05,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 321 transitions, 3209 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:05,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:19:05,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:19:05,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:19:06,395 INFO L124 PetriNetUnfolderBase]: 931/1812 cut-off events. [2024-06-04 15:19:06,396 INFO L125 PetriNetUnfolderBase]: For 233805/233805 co-relation queries the response was YES. [2024-06-04 15:19:06,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9984 conditions, 1812 events. 931/1812 cut-off events. For 233805/233805 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 11600 event pairs, 188 based on Foata normal form. 12/1823 useless extension candidates. Maximal degree in co-relation 9790. Up to 1395 conditions per place. [2024-06-04 15:19:06,420 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 233 selfloop transitions, 102 changer transitions 7/344 dead transitions. [2024-06-04 15:19:06,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 344 transitions, 4005 flow [2024-06-04 15:19:06,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:19:06,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:19:06,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-04 15:19:06,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-04 15:19:06,421 INFO L175 Difference]: Start difference. First operand has 432 places, 321 transitions, 3209 flow. Second operand 11 states and 123 transitions. [2024-06-04 15:19:06,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 344 transitions, 4005 flow [2024-06-04 15:19:07,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 344 transitions, 3807 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-04 15:19:07,432 INFO L231 Difference]: Finished difference. Result has 434 places, 319 transitions, 3236 flow [2024-06-04 15:19:07,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3013, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3236, PETRI_PLACES=434, PETRI_TRANSITIONS=319} [2024-06-04 15:19:07,433 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 403 predicate places. [2024-06-04 15:19:07,433 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 319 transitions, 3236 flow [2024-06-04 15:19:07,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:07,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:19:07,433 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 15:19:07,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-04 15:19:07,434 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 15:19:07,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:19:07,434 INFO L85 PathProgramCache]: Analyzing trace with hash 684772902, now seen corresponding path program 5 times [2024-06-04 15:19:07,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:19:07,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388286564] [2024-06-04 15:19:07,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:19:07,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:19:07,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:19:08,145 INFO 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 15:19:08,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:19:08,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388286564] [2024-06-04 15:19:08,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388286564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:19:08,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:19:08,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:19:08,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072423023] [2024-06-04 15:19:08,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:19:08,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:19:08,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:19:08,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:19:08,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:19:08,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:19:08,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 319 transitions, 3236 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:08,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:19:08,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:19:08,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:19:08,733 INFO L124 PetriNetUnfolderBase]: 941/1838 cut-off events. [2024-06-04 15:19:08,734 INFO L125 PetriNetUnfolderBase]: For 264353/264353 co-relation queries the response was YES. [2024-06-04 15:19:08,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11117 conditions, 1838 events. 941/1838 cut-off events. For 264353/264353 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 11735 event pairs, 200 based on Foata normal form. 8/1845 useless extension candidates. Maximal degree in co-relation 10922. Up to 1248 conditions per place. [2024-06-04 15:19:08,758 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 237 selfloop transitions, 97 changer transitions 8/344 dead transitions. [2024-06-04 15:19:08,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 344 transitions, 4282 flow [2024-06-04 15:19:08,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:19:08,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:19:08,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-04 15:19:08,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-04 15:19:08,759 INFO L175 Difference]: Start difference. First operand has 434 places, 319 transitions, 3236 flow. Second operand 11 states and 124 transitions. [2024-06-04 15:19:08,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 344 transitions, 4282 flow [2024-06-04 15:19:10,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 344 transitions, 3978 flow, removed 17 selfloop flow, removed 14 redundant places. [2024-06-04 15:19:10,005 INFO L231 Difference]: Finished difference. Result has 431 places, 316 transitions, 3112 flow [2024-06-04 15:19:10,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2934, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3112, PETRI_PLACES=431, PETRI_TRANSITIONS=316} [2024-06-04 15:19:10,005 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 400 predicate places. [2024-06-04 15:19:10,005 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 316 transitions, 3112 flow [2024-06-04 15:19:10,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:10,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:19:10,006 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 15:19:10,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-04 15:19:10,006 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 15:19:10,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:19:10,006 INFO L85 PathProgramCache]: Analyzing trace with hash -522689928, now seen corresponding path program 33 times [2024-06-04 15:19:10,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:19:10,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321439655] [2024-06-04 15:19:10,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:19:10,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:19:10,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:19:10,923 INFO 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 15:19:10,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:19:10,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321439655] [2024-06-04 15:19:10,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321439655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:19:10,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:19:10,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:19:10,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186432559] [2024-06-04 15:19:10,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:19:10,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:19:10,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:19:10,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:19:10,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:19:11,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:19:11,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 316 transitions, 3112 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:11,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:19:11,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:19:11,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:19:11,527 INFO L124 PetriNetUnfolderBase]: 933/1818 cut-off events. [2024-06-04 15:19:11,527 INFO L125 PetriNetUnfolderBase]: For 234827/234827 co-relation queries the response was YES. [2024-06-04 15:19:11,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11268 conditions, 1818 events. 933/1818 cut-off events. For 234827/234827 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 11568 event pairs, 233 based on Foata normal form. 2/1819 useless extension candidates. Maximal degree in co-relation 11076. Up to 1182 conditions per place. [2024-06-04 15:19:11,553 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 242 selfloop transitions, 93 changer transitions 0/337 dead transitions. [2024-06-04 15:19:11,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 337 transitions, 4144 flow [2024-06-04 15:19:11,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:19:11,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:19:11,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-04 15:19:11,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-04 15:19:11,555 INFO L175 Difference]: Start difference. First operand has 431 places, 316 transitions, 3112 flow. Second operand 11 states and 120 transitions. [2024-06-04 15:19:11,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 337 transitions, 4144 flow [2024-06-04 15:19:12,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 337 transitions, 3952 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-04 15:19:12,883 INFO L231 Difference]: Finished difference. Result has 428 places, 318 transitions, 3188 flow [2024-06-04 15:19:12,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2926, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3188, PETRI_PLACES=428, PETRI_TRANSITIONS=318} [2024-06-04 15:19:12,883 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 397 predicate places. [2024-06-04 15:19:12,884 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 318 transitions, 3188 flow [2024-06-04 15:19:12,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:12,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:19:12,884 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 15:19:12,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-04 15:19:12,884 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 15:19:12,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:19:12,885 INFO L85 PathProgramCache]: Analyzing trace with hash 324209260, now seen corresponding path program 34 times [2024-06-04 15:19:12,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:19:12,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413288809] [2024-06-04 15:19:12,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:19:12,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:19:12,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:19:13,800 INFO 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 15:19:13,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:19:13,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413288809] [2024-06-04 15:19:13,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413288809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:19:13,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:19:13,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:19:13,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44354299] [2024-06-04 15:19:13,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:19:13,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:19:13,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:19:13,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:19:13,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:19:13,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:19:13,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 318 transitions, 3188 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:13,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:19:13,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:19:13,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:19:14,502 INFO L124 PetriNetUnfolderBase]: 937/1826 cut-off events. [2024-06-04 15:19:14,502 INFO L125 PetriNetUnfolderBase]: For 228369/228369 co-relation queries the response was YES. [2024-06-04 15:19:14,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11342 conditions, 1826 events. 937/1826 cut-off events. For 228369/228369 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 11657 event pairs, 209 based on Foata normal form. 2/1827 useless extension candidates. Maximal degree in co-relation 11152. Up to 1330 conditions per place. [2024-06-04 15:19:14,520 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 244 selfloop transitions, 92 changer transitions 0/338 dead transitions. [2024-06-04 15:19:14,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 338 transitions, 4188 flow [2024-06-04 15:19:14,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:19:14,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:19:14,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-04 15:19:14,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-04 15:19:14,522 INFO L175 Difference]: Start difference. First operand has 428 places, 318 transitions, 3188 flow. Second operand 11 states and 119 transitions. [2024-06-04 15:19:14,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 338 transitions, 4188 flow [2024-06-04 15:19:15,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 338 transitions, 4042 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-04 15:19:15,913 INFO L231 Difference]: Finished difference. Result has 431 places, 319 transitions, 3270 flow [2024-06-04 15:19:15,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3050, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3270, PETRI_PLACES=431, PETRI_TRANSITIONS=319} [2024-06-04 15:19:15,913 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 400 predicate places. [2024-06-04 15:19:15,913 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 319 transitions, 3270 flow [2024-06-04 15:19:15,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:15,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:19:15,914 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 15:19:15,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-04 15:19:15,914 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 15:19:15,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:19:15,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1247935780, now seen corresponding path program 35 times [2024-06-04 15:19:15,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:19:15,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887840401] [2024-06-04 15:19:15,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:19:15,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:19:15,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:19:16,780 INFO 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 15:19:16,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:19:16,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887840401] [2024-06-04 15:19:16,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887840401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:19:16,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:19:16,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:19:16,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682622089] [2024-06-04 15:19:16,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:19:16,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:19:16,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:19:16,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:19:16,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:19:16,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:19:16,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 319 transitions, 3270 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:16,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:19:16,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:19:16,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:19:17,438 INFO L124 PetriNetUnfolderBase]: 934/1821 cut-off events. [2024-06-04 15:19:17,439 INFO L125 PetriNetUnfolderBase]: For 212655/212655 co-relation queries the response was YES. [2024-06-04 15:19:17,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11128 conditions, 1821 events. 934/1821 cut-off events. For 212655/212655 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 11629 event pairs, 204 based on Foata normal form. 2/1822 useless extension candidates. Maximal degree in co-relation 10937. Up to 1455 conditions per place. [2024-06-04 15:19:17,462 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 245 selfloop transitions, 91 changer transitions 0/338 dead transitions. [2024-06-04 15:19:17,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 338 transitions, 4024 flow [2024-06-04 15:19:17,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:19:17,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:19:17,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-04 15:19:17,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2024-06-04 15:19:17,463 INFO L175 Difference]: Start difference. First operand has 431 places, 319 transitions, 3270 flow. Second operand 11 states and 116 transitions. [2024-06-04 15:19:17,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 338 transitions, 4024 flow [2024-06-04 15:19:18,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 338 transitions, 3798 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-04 15:19:18,583 INFO L231 Difference]: Finished difference. Result has 432 places, 320 transitions, 3266 flow [2024-06-04 15:19:18,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3046, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3266, PETRI_PLACES=432, PETRI_TRANSITIONS=320} [2024-06-04 15:19:18,584 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 401 predicate places. [2024-06-04 15:19:18,584 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 320 transitions, 3266 flow [2024-06-04 15:19:18,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:18,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:19:18,584 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 15:19:18,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-04 15:19:18,584 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 15:19:18,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:19:18,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1247941360, now seen corresponding path program 36 times [2024-06-04 15:19:18,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:19:18,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637402767] [2024-06-04 15:19:18,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:19:18,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:19:18,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:19:19,470 INFO 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 15:19:19,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:19:19,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637402767] [2024-06-04 15:19:19,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637402767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:19:19,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:19:19,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:19:19,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544272950] [2024-06-04 15:19:19,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:19:19,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:19:19,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:19:19,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:19:19,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:19:19,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:19:19,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 320 transitions, 3266 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:19,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:19:19,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:19:19,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:19:20,183 INFO L124 PetriNetUnfolderBase]: 931/1816 cut-off events. [2024-06-04 15:19:20,184 INFO L125 PetriNetUnfolderBase]: For 197279/197279 co-relation queries the response was YES. [2024-06-04 15:19:20,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10782 conditions, 1816 events. 931/1816 cut-off events. For 197279/197279 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 11583 event pairs, 203 based on Foata normal form. 2/1817 useless extension candidates. Maximal degree in co-relation 10591. Up to 1410 conditions per place. [2024-06-04 15:19:20,208 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 241 selfloop transitions, 95 changer transitions 0/338 dead transitions. [2024-06-04 15:19:20,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 338 transitions, 3986 flow [2024-06-04 15:19:20,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:19:20,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:19:20,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-04 15:19:20,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-04 15:19:20,209 INFO L175 Difference]: Start difference. First operand has 432 places, 320 transitions, 3266 flow. Second operand 11 states and 117 transitions. [2024-06-04 15:19:20,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 338 transitions, 3986 flow [2024-06-04 15:19:21,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 338 transitions, 3762 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-04 15:19:21,381 INFO L231 Difference]: Finished difference. Result has 433 places, 320 transitions, 3238 flow [2024-06-04 15:19:21,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3042, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3238, PETRI_PLACES=433, PETRI_TRANSITIONS=320} [2024-06-04 15:19:21,382 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 402 predicate places. [2024-06-04 15:19:21,382 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 320 transitions, 3238 flow [2024-06-04 15:19:21,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:21,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:19:21,382 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 15:19:21,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-04 15:19:21,382 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 15:19:21,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:19:21,383 INFO L85 PathProgramCache]: Analyzing trace with hash -167687798, now seen corresponding path program 37 times [2024-06-04 15:19:21,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:19:21,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219475169] [2024-06-04 15:19:21,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:19:21,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:19:21,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:19:22,401 INFO 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 15:19:22,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:19:22,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219475169] [2024-06-04 15:19:22,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219475169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:19:22,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:19:22,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:19:22,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624116698] [2024-06-04 15:19:22,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:19:22,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:19:22,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:19:22,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:19:22,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:19:22,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:19:22,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 320 transitions, 3238 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:22,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:19:22,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:19:22,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:19:23,006 INFO L124 PetriNetUnfolderBase]: 935/1824 cut-off events. [2024-06-04 15:19:23,006 INFO L125 PetriNetUnfolderBase]: For 197033/197033 co-relation queries the response was YES. [2024-06-04 15:19:23,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10802 conditions, 1824 events. 935/1824 cut-off events. For 197033/197033 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 11648 event pairs, 196 based on Foata normal form. 2/1822 useless extension candidates. Maximal degree in co-relation 10611. Up to 1238 conditions per place. [2024-06-04 15:19:23,032 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 200 selfloop transitions, 135 changer transitions 0/337 dead transitions. [2024-06-04 15:19:23,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 337 transitions, 3986 flow [2024-06-04 15:19:23,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:19:23,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:19:23,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-04 15:19:23,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-04 15:19:23,033 INFO L175 Difference]: Start difference. First operand has 433 places, 320 transitions, 3238 flow. Second operand 11 states and 122 transitions. [2024-06-04 15:19:23,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 337 transitions, 3986 flow [2024-06-04 15:19:24,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 337 transitions, 3764 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-04 15:19:24,293 INFO L231 Difference]: Finished difference. Result has 433 places, 321 transitions, 3326 flow [2024-06-04 15:19:24,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3016, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3326, PETRI_PLACES=433, PETRI_TRANSITIONS=321} [2024-06-04 15:19:24,293 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 402 predicate places. [2024-06-04 15:19:24,293 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 321 transitions, 3326 flow [2024-06-04 15:19:24,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:24,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:19:24,294 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 15:19:24,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-04 15:19:24,294 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 15:19:24,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:19:24,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1939289938, now seen corresponding path program 38 times [2024-06-04 15:19:24,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:19:24,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708906088] [2024-06-04 15:19:24,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:19:24,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:19:24,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:19:25,281 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 15:19:25,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:19:25,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708906088] [2024-06-04 15:19:25,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708906088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:19:25,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:19:25,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:19:25,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063502251] [2024-06-04 15:19:25,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:19:25,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:19:25,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:19:25,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:19:25,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:19:25,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:19:25,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 321 transitions, 3326 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:25,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:19:25,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:19:25,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:19:25,973 INFO L124 PetriNetUnfolderBase]: 975/1904 cut-off events. [2024-06-04 15:19:25,973 INFO L125 PetriNetUnfolderBase]: For 286457/286457 co-relation queries the response was YES. [2024-06-04 15:19:25,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12713 conditions, 1904 events. 975/1904 cut-off events. For 286457/286457 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 12205 event pairs, 216 based on Foata normal form. 2/1902 useless extension candidates. Maximal degree in co-relation 12522. Up to 1222 conditions per place. [2024-06-04 15:19:26,004 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 205 selfloop transitions, 137 changer transitions 0/344 dead transitions. [2024-06-04 15:19:26,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 344 transitions, 4398 flow [2024-06-04 15:19:26,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:19:26,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:19:26,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-04 15:19:26,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-04 15:19:26,006 INFO L175 Difference]: Start difference. First operand has 433 places, 321 transitions, 3326 flow. Second operand 11 states and 128 transitions. [2024-06-04 15:19:26,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 344 transitions, 4398 flow [2024-06-04 15:19:27,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 344 transitions, 4098 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-04 15:19:27,629 INFO L231 Difference]: Finished difference. Result has 435 places, 323 transitions, 3378 flow [2024-06-04 15:19:27,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3026, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3378, PETRI_PLACES=435, PETRI_TRANSITIONS=323} [2024-06-04 15:19:27,629 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 404 predicate places. [2024-06-04 15:19:27,629 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 323 transitions, 3378 flow [2024-06-04 15:19:27,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:27,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:19:27,630 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 15:19:27,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-04 15:19:27,630 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 15:19:27,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:19:27,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1931932708, now seen corresponding path program 39 times [2024-06-04 15:19:27,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:19:27,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760372642] [2024-06-04 15:19:27,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:19:27,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:19:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:19:28,605 INFO 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 15:19:28,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:19:28,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760372642] [2024-06-04 15:19:28,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760372642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:19:28,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:19:28,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:19:28,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828926216] [2024-06-04 15:19:28,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:19:28,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:19:28,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:19:28,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:19:28,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:19:28,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:19:28,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 323 transitions, 3378 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:28,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:19:28,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:19:28,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:19:29,230 INFO L124 PetriNetUnfolderBase]: 995/1948 cut-off events. [2024-06-04 15:19:29,230 INFO L125 PetriNetUnfolderBase]: For 365948/365948 co-relation queries the response was YES. [2024-06-04 15:19:29,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12908 conditions, 1948 events. 995/1948 cut-off events. For 365948/365948 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 12508 event pairs, 220 based on Foata normal form. 12/1956 useless extension candidates. Maximal degree in co-relation 12716. Up to 1320 conditions per place. [2024-06-04 15:19:29,256 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 207 selfloop transitions, 129 changer transitions 7/345 dead transitions. [2024-06-04 15:19:29,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 345 transitions, 4178 flow [2024-06-04 15:19:29,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:19:29,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:19:29,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-04 15:19:29,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-04 15:19:29,258 INFO L175 Difference]: Start difference. First operand has 435 places, 323 transitions, 3378 flow. Second operand 11 states and 130 transitions. [2024-06-04 15:19:29,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 345 transitions, 4178 flow [2024-06-04 15:19:30,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 345 transitions, 3949 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-04 15:19:30,882 INFO L231 Difference]: Finished difference. Result has 439 places, 321 transitions, 3432 flow [2024-06-04 15:19:30,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3155, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3432, PETRI_PLACES=439, PETRI_TRANSITIONS=321} [2024-06-04 15:19:30,882 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 408 predicate places. [2024-06-04 15:19:30,882 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 321 transitions, 3432 flow [2024-06-04 15:19:30,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:30,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:19:30,883 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 15:19:30,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-04 15:19:30,883 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 15:19:30,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:19:30,884 INFO L85 PathProgramCache]: Analyzing trace with hash 377430778, now seen corresponding path program 6 times [2024-06-04 15:19:30,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:19:30,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368122812] [2024-06-04 15:19:30,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:19:30,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:19:30,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:19:31,641 INFO 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 15:19:31,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:19:31,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368122812] [2024-06-04 15:19:31,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368122812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:19:31,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:19:31,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:19:31,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860232874] [2024-06-04 15:19:31,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:19:31,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:19:31,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:19:31,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:19:31,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:19:31,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:19:31,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 321 transitions, 3432 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:31,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:19:31,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:19:31,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:19:32,258 INFO L124 PetriNetUnfolderBase]: 998/1961 cut-off events. [2024-06-04 15:19:32,258 INFO L125 PetriNetUnfolderBase]: For 383171/383171 co-relation queries the response was YES. [2024-06-04 15:19:32,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13775 conditions, 1961 events. 998/1961 cut-off events. For 383171/383171 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 12621 event pairs, 229 based on Foata normal form. 8/1965 useless extension candidates. Maximal degree in co-relation 13581. Up to 1296 conditions per place. [2024-06-04 15:19:32,287 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 208 selfloop transitions, 126 changer transitions 8/344 dead transitions. [2024-06-04 15:19:32,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 344 transitions, 4442 flow [2024-06-04 15:19:32,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:19:32,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:19:32,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-04 15:19:32,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-04 15:19:32,289 INFO L175 Difference]: Start difference. First operand has 439 places, 321 transitions, 3432 flow. Second operand 11 states and 131 transitions. [2024-06-04 15:19:32,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 344 transitions, 4442 flow [2024-06-04 15:19:34,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 344 transitions, 4153 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-04 15:19:34,138 INFO L231 Difference]: Finished difference. Result has 440 places, 318 transitions, 3379 flow [2024-06-04 15:19:34,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3143, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3379, PETRI_PLACES=440, PETRI_TRANSITIONS=318} [2024-06-04 15:19:34,138 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 409 predicate places. [2024-06-04 15:19:34,138 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 318 transitions, 3379 flow [2024-06-04 15:19:34,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:34,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:19:34,139 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 15:19:34,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-04 15:19:34,139 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 15:19:34,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:19:34,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1369795394, now seen corresponding path program 7 times [2024-06-04 15:19:34,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:19:34,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75345765] [2024-06-04 15:19:34,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:19:34,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:19:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:19:34,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:19:34,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:19:34,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75345765] [2024-06-04 15:19:34,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75345765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:19:34,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:19:34,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:19:34,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818450868] [2024-06-04 15:19:34,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:19:34,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:19:34,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:19:34,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:19:34,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:19:35,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:19:35,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 318 transitions, 3379 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:35,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:19:35,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:19:35,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:19:35,643 INFO L124 PetriNetUnfolderBase]: 1006/1981 cut-off events. [2024-06-04 15:19:35,644 INFO L125 PetriNetUnfolderBase]: For 437489/437489 co-relation queries the response was YES. [2024-06-04 15:19:35,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14534 conditions, 1981 events. 1006/1981 cut-off events. For 437489/437489 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 12779 event pairs, 455 based on Foata normal form. 8/1988 useless extension candidates. Maximal degree in co-relation 14339. Up to 1768 conditions per place. [2024-06-04 15:19:35,669 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 311 selfloop transitions, 17 changer transitions 9/339 dead transitions. [2024-06-04 15:19:35,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 339 transitions, 4385 flow [2024-06-04 15:19:35,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:19:35,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:19:35,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-04 15:19:35,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2024-06-04 15:19:35,671 INFO L175 Difference]: Start difference. First operand has 440 places, 318 transitions, 3379 flow. Second operand 11 states and 116 transitions. [2024-06-04 15:19:35,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 339 transitions, 4385 flow [2024-06-04 15:19:37,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 339 transitions, 4123 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-04 15:19:37,752 INFO L231 Difference]: Finished difference. Result has 437 places, 314 transitions, 3127 flow [2024-06-04 15:19:37,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3123, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3127, PETRI_PLACES=437, PETRI_TRANSITIONS=314} [2024-06-04 15:19:37,753 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 406 predicate places. [2024-06-04 15:19:37,753 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 314 transitions, 3127 flow [2024-06-04 15:19:37,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:37,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:19:37,753 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 15:19:37,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-04 15:19:37,753 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 15:19:37,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:19:37,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1358753504, now seen corresponding path program 8 times [2024-06-04 15:19:37,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:19:37,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383011264] [2024-06-04 15:19:37,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:19:37,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:19:37,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:19:38,497 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 15:19:38,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:19:38,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383011264] [2024-06-04 15:19:38,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383011264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:19:38,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:19:38,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:19:38,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555287981] [2024-06-04 15:19:38,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:19:38,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:19:38,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:19:38,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:19:38,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:19:38,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:19:38,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 314 transitions, 3127 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:38,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:19:38,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:19:38,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:19:39,135 INFO L124 PetriNetUnfolderBase]: 994/1961 cut-off events. [2024-06-04 15:19:39,135 INFO L125 PetriNetUnfolderBase]: For 423262/423262 co-relation queries the response was YES. [2024-06-04 15:19:39,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14104 conditions, 1961 events. 994/1961 cut-off events. For 423262/423262 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 12627 event pairs, 453 based on Foata normal form. 8/1968 useless extension candidates. Maximal degree in co-relation 13925. Up to 1750 conditions per place. [2024-06-04 15:19:39,158 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 309 selfloop transitions, 16 changer transitions 10/337 dead transitions. [2024-06-04 15:19:39,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 337 transitions, 4129 flow [2024-06-04 15:19:39,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:19:39,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:19:39,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-04 15:19:39,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3203125 [2024-06-04 15:19:39,159 INFO L175 Difference]: Start difference. First operand has 437 places, 314 transitions, 3127 flow. Second operand 12 states and 123 transitions. [2024-06-04 15:19:39,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 337 transitions, 4129 flow [2024-06-04 15:19:41,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 337 transitions, 4090 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 15:19:41,075 INFO L231 Difference]: Finished difference. Result has 436 places, 311 transitions, 3110 flow [2024-06-04 15:19:41,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3092, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3110, PETRI_PLACES=436, PETRI_TRANSITIONS=311} [2024-06-04 15:19:41,075 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 405 predicate places. [2024-06-04 15:19:41,076 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 311 transitions, 3110 flow [2024-06-04 15:19:41,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:41,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:19:41,076 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 15:19:41,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-04 15:19:41,076 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 15:19:41,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:19:41,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1369804694, now seen corresponding path program 9 times [2024-06-04 15:19:41,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:19:41,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080812166] [2024-06-04 15:19:41,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:19:41,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:19:41,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:19:41,832 INFO 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 15:19:41,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:19:41,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080812166] [2024-06-04 15:19:41,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080812166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:19:41,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:19:41,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:19:41,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071916254] [2024-06-04 15:19:41,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:19:41,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:19:41,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:19:41,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:19:41,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:19:41,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:19:41,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 311 transitions, 3110 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:41,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:19:41,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:19:41,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:19:42,477 INFO L124 PetriNetUnfolderBase]: 956/1887 cut-off events. [2024-06-04 15:19:42,478 INFO L125 PetriNetUnfolderBase]: For 357866/357866 co-relation queries the response was YES. [2024-06-04 15:19:42,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12349 conditions, 1887 events. 956/1887 cut-off events. For 357866/357866 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 12040 event pairs, 439 based on Foata normal form. 12/1898 useless extension candidates. Maximal degree in co-relation 12171. Up to 1787 conditions per place. [2024-06-04 15:19:42,498 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 299 selfloop transitions, 15 changer transitions 11/327 dead transitions. [2024-06-04 15:19:42,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 327 transitions, 3816 flow [2024-06-04 15:19:42,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:19:42,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:19:42,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 108 transitions. [2024-06-04 15:19:42,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3068181818181818 [2024-06-04 15:19:42,499 INFO L175 Difference]: Start difference. First operand has 436 places, 311 transitions, 3110 flow. Second operand 11 states and 108 transitions. [2024-06-04 15:19:42,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 327 transitions, 3816 flow [2024-06-04 15:19:44,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 327 transitions, 3759 flow, removed 14 selfloop flow, removed 11 redundant places. [2024-06-04 15:19:44,070 INFO L231 Difference]: Finished difference. Result has 432 places, 304 transitions, 3034 flow [2024-06-04 15:19:44,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3053, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3034, PETRI_PLACES=432, PETRI_TRANSITIONS=304} [2024-06-04 15:19:44,071 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 401 predicate places. [2024-06-04 15:19:44,071 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 304 transitions, 3034 flow [2024-06-04 15:19:44,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:44,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:19:44,071 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 15:19:44,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-04 15:19:44,072 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 15:19:44,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:19:44,072 INFO L85 PathProgramCache]: Analyzing trace with hash -799548332, now seen corresponding path program 40 times [2024-06-04 15:19:44,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:19:44,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606448073] [2024-06-04 15:19:44,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:19:44,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:19:44,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:19:44,926 INFO 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 15:19:44,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:19:44,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606448073] [2024-06-04 15:19:44,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606448073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:19:44,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:19:44,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:19:44,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772788130] [2024-06-04 15:19:44,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:19:44,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:19:44,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:19:44,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:19:44,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:19:45,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:19:45,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 304 transitions, 3034 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:45,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:19:45,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:19:45,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:19:45,724 INFO L124 PetriNetUnfolderBase]: 931/1836 cut-off events. [2024-06-04 15:19:45,724 INFO L125 PetriNetUnfolderBase]: For 275992/275992 co-relation queries the response was YES. [2024-06-04 15:19:45,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12111 conditions, 1836 events. 931/1836 cut-off events. For 275992/275992 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 11641 event pairs, 270 based on Foata normal form. 2/1834 useless extension candidates. Maximal degree in co-relation 11935. Up to 1276 conditions per place. [2024-06-04 15:19:45,748 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 214 selfloop transitions, 105 changer transitions 0/321 dead transitions. [2024-06-04 15:19:45,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 321 transitions, 3754 flow [2024-06-04 15:19:45,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:19:45,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:19:45,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-04 15:19:45,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 15:19:45,749 INFO L175 Difference]: Start difference. First operand has 432 places, 304 transitions, 3034 flow. Second operand 11 states and 121 transitions. [2024-06-04 15:19:45,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 321 transitions, 3754 flow [2024-06-04 15:19:47,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 321 transitions, 3706 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-04 15:19:47,393 INFO L231 Difference]: Finished difference. Result has 428 places, 305 transitions, 3240 flow [2024-06-04 15:19:47,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2986, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3240, PETRI_PLACES=428, PETRI_TRANSITIONS=305} [2024-06-04 15:19:47,394 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 397 predicate places. [2024-06-04 15:19:47,394 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 305 transitions, 3240 flow [2024-06-04 15:19:47,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:47,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:19:47,394 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 15:19:47,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-04 15:19:47,395 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 15:19:47,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:19:47,395 INFO L85 PathProgramCache]: Analyzing trace with hash -2107522114, now seen corresponding path program 41 times [2024-06-04 15:19:47,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:19:47,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506742685] [2024-06-04 15:19:47,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:19:47,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:19:47,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:19:48,276 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 15:19:48,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:19:48,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506742685] [2024-06-04 15:19:48,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506742685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:19:48,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:19:48,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:19:48,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561757446] [2024-06-04 15:19:48,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:19:48,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:19:48,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:19:48,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:19:48,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:19:48,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:19:48,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 305 transitions, 3240 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:48,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:19:48,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:19:48,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:19:48,865 INFO L124 PetriNetUnfolderBase]: 935/1844 cut-off events. [2024-06-04 15:19:48,865 INFO L125 PetriNetUnfolderBase]: For 277967/277967 co-relation queries the response was YES. [2024-06-04 15:19:48,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12381 conditions, 1844 events. 935/1844 cut-off events. For 277967/277967 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 11743 event pairs, 270 based on Foata normal form. 2/1842 useless extension candidates. Maximal degree in co-relation 12205. Up to 1270 conditions per place. [2024-06-04 15:19:48,886 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 214 selfloop transitions, 106 changer transitions 0/322 dead transitions. [2024-06-04 15:19:48,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 322 transitions, 3962 flow [2024-06-04 15:19:48,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:19:48,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:19:48,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-04 15:19:48,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-04 15:19:48,887 INFO L175 Difference]: Start difference. First operand has 428 places, 305 transitions, 3240 flow. Second operand 11 states and 122 transitions. [2024-06-04 15:19:48,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 322 transitions, 3962 flow [2024-06-04 15:19:50,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 322 transitions, 3718 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-04 15:19:50,722 INFO L231 Difference]: Finished difference. Result has 430 places, 306 transitions, 3254 flow [2024-06-04 15:19:50,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2996, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3254, PETRI_PLACES=430, PETRI_TRANSITIONS=306} [2024-06-04 15:19:50,724 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 399 predicate places. [2024-06-04 15:19:50,724 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 306 transitions, 3254 flow [2024-06-04 15:19:50,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:50,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:19:50,724 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 15:19:50,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-04 15:19:50,725 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 15:19:50,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:19:50,725 INFO L85 PathProgramCache]: Analyzing trace with hash -904055060, now seen corresponding path program 42 times [2024-06-04 15:19:50,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:19:50,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479148489] [2024-06-04 15:19:50,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:19:50,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:19:50,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:19:51,698 INFO 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 15:19:51,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:19:51,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479148489] [2024-06-04 15:19:51,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479148489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:19:51,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:19:51,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:19:51,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875720611] [2024-06-04 15:19:51,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:19:51,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:19:51,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:19:51,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:19:51,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:19:51,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:19:51,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 306 transitions, 3254 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:51,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:19:51,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:19:51,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:19:52,366 INFO L124 PetriNetUnfolderBase]: 955/1888 cut-off events. [2024-06-04 15:19:52,366 INFO L125 PetriNetUnfolderBase]: For 354982/354982 co-relation queries the response was YES. [2024-06-04 15:19:52,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12570 conditions, 1888 events. 955/1888 cut-off events. For 354982/354982 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 12060 event pairs, 276 based on Foata normal form. 12/1896 useless extension candidates. Maximal degree in co-relation 12393. Up to 1286 conditions per place. [2024-06-04 15:19:52,388 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 221 selfloop transitions, 98 changer transitions 7/328 dead transitions. [2024-06-04 15:19:52,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 328 transitions, 4024 flow [2024-06-04 15:19:52,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:19:52,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:19:52,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-04 15:19:52,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-04 15:19:52,389 INFO L175 Difference]: Start difference. First operand has 430 places, 306 transitions, 3254 flow. Second operand 11 states and 129 transitions. [2024-06-04 15:19:52,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 328 transitions, 4024 flow [2024-06-04 15:19:54,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 328 transitions, 3776 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-04 15:19:54,025 INFO L231 Difference]: Finished difference. Result has 432 places, 304 transitions, 3231 flow [2024-06-04 15:19:54,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3006, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3231, PETRI_PLACES=432, PETRI_TRANSITIONS=304} [2024-06-04 15:19:54,026 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 401 predicate places. [2024-06-04 15:19:54,026 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 304 transitions, 3231 flow [2024-06-04 15:19:54,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:54,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:19:54,026 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 15:19:54,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-04 15:19:54,026 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 15:19:54,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:19:54,027 INFO L85 PathProgramCache]: Analyzing trace with hash 415704472, now seen corresponding path program 43 times [2024-06-04 15:19:54,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:19:54,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10034604] [2024-06-04 15:19:54,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:19:54,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:19:54,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:19:54,916 INFO 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 15:19:54,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:19:54,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10034604] [2024-06-04 15:19:54,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10034604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:19:54,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:19:54,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:19:54,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266935091] [2024-06-04 15:19:54,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:19:54,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:19:54,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:19:54,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:19:54,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:19:55,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:19:55,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 304 transitions, 3231 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:55,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:19:55,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:19:55,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:19:55,626 INFO L124 PetriNetUnfolderBase]: 935/1848 cut-off events. [2024-06-04 15:19:55,626 INFO L125 PetriNetUnfolderBase]: For 287593/287593 co-relation queries the response was YES. [2024-06-04 15:19:55,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12469 conditions, 1848 events. 935/1848 cut-off events. For 287593/287593 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 11763 event pairs, 276 based on Foata normal form. 2/1846 useless extension candidates. Maximal degree in co-relation 12291. Up to 1270 conditions per place. [2024-06-04 15:19:55,649 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 218 selfloop transitions, 101 changer transitions 0/321 dead transitions. [2024-06-04 15:19:55,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 321 transitions, 3953 flow [2024-06-04 15:19:55,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:19:55,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:19:55,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-04 15:19:55,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 15:19:55,651 INFO L175 Difference]: Start difference. First operand has 432 places, 304 transitions, 3231 flow. Second operand 11 states and 121 transitions. [2024-06-04 15:19:55,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 321 transitions, 3953 flow [2024-06-04 15:19:57,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 321 transitions, 3701 flow, removed 20 selfloop flow, removed 11 redundant places. [2024-06-04 15:19:57,454 INFO L231 Difference]: Finished difference. Result has 432 places, 305 transitions, 3231 flow [2024-06-04 15:19:57,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2979, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3231, PETRI_PLACES=432, PETRI_TRANSITIONS=305} [2024-06-04 15:19:57,454 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 401 predicate places. [2024-06-04 15:19:57,455 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 305 transitions, 3231 flow [2024-06-04 15:19:57,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:57,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:19:57,455 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 15:19:57,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-04 15:19:57,455 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 15:19:57,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:19:57,456 INFO L85 PathProgramCache]: Analyzing trace with hash -803272982, now seen corresponding path program 44 times [2024-06-04 15:19:57,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:19:57,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768251447] [2024-06-04 15:19:57,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:19:57,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:19:57,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:19:58,387 INFO 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 15:19:58,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:19:58,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768251447] [2024-06-04 15:19:58,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768251447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:19:58,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:19:58,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:19:58,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613302949] [2024-06-04 15:19:58,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:19:58,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:19:58,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:19:58,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:19:58,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:19:58,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:19:58,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 305 transitions, 3231 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:58,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:19:58,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:19:58,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:19:59,064 INFO L124 PetriNetUnfolderBase]: 968/1915 cut-off events. [2024-06-04 15:19:59,065 INFO L125 PetriNetUnfolderBase]: For 367380/367380 co-relation queries the response was YES. [2024-06-04 15:19:59,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13927 conditions, 1915 events. 968/1915 cut-off events. For 367380/367380 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 12275 event pairs, 289 based on Foata normal form. 2/1913 useless extension candidates. Maximal degree in co-relation 13749. Up to 1099 conditions per place. [2024-06-04 15:19:59,089 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 214 selfloop transitions, 111 changer transitions 0/327 dead transitions. [2024-06-04 15:19:59,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 327 transitions, 4241 flow [2024-06-04 15:19:59,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:19:59,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:19:59,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-04 15:19:59,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-04 15:19:59,090 INFO L175 Difference]: Start difference. First operand has 432 places, 305 transitions, 3231 flow. Second operand 11 states and 127 transitions. [2024-06-04 15:19:59,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 327 transitions, 4241 flow [2024-06-04 15:20:00,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 327 transitions, 4027 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-04 15:20:00,947 INFO L231 Difference]: Finished difference. Result has 435 places, 306 transitions, 3289 flow [2024-06-04 15:20:00,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3017, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3289, PETRI_PLACES=435, PETRI_TRANSITIONS=306} [2024-06-04 15:20:00,956 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 404 predicate places. [2024-06-04 15:20:00,956 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 306 transitions, 3289 flow [2024-06-04 15:20:00,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:20:00,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:20:00,957 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 15:20:00,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-04 15:20:00,957 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 15:20:00,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:20:00,957 INFO L85 PathProgramCache]: Analyzing trace with hash 2096092424, now seen corresponding path program 45 times [2024-06-04 15:20:00,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:20:00,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961756079] [2024-06-04 15:20:00,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:20:00,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:20:00,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:20:01,828 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 15:20:01,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:20:01,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961756079] [2024-06-04 15:20:01,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961756079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:20:01,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:20:01,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:20:01,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254745404] [2024-06-04 15:20:01,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:20:01,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:20:01,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:20:01,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:20:01,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:20:01,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:20:01,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 306 transitions, 3289 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:20:01,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:20:01,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:20:01,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:20:02,409 INFO L124 PetriNetUnfolderBase]: 959/1900 cut-off events. [2024-06-04 15:20:02,409 INFO L125 PetriNetUnfolderBase]: For 373381/373381 co-relation queries the response was YES. [2024-06-04 15:20:02,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12758 conditions, 1900 events. 959/1900 cut-off events. For 373381/373381 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 12227 event pairs, 248 based on Foata normal form. 12/1908 useless extension candidates. Maximal degree in co-relation 12579. Up to 1304 conditions per place. [2024-06-04 15:20:02,432 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 215 selfloop transitions, 104 changer transitions 7/328 dead transitions. [2024-06-04 15:20:02,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 328 transitions, 4065 flow [2024-06-04 15:20:02,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:20:02,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:20:02,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-04 15:20:02,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-04 15:20:02,434 INFO L175 Difference]: Start difference. First operand has 435 places, 306 transitions, 3289 flow. Second operand 11 states and 128 transitions. [2024-06-04 15:20:02,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 328 transitions, 4065 flow [2024-06-04 15:20:04,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 328 transitions, 3746 flow, removed 28 selfloop flow, removed 10 redundant places. [2024-06-04 15:20:04,069 INFO L231 Difference]: Finished difference. Result has 436 places, 304 transitions, 3211 flow [2024-06-04 15:20:04,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2977, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3211, PETRI_PLACES=436, PETRI_TRANSITIONS=304} [2024-06-04 15:20:04,070 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 405 predicate places. [2024-06-04 15:20:04,070 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 304 transitions, 3211 flow [2024-06-04 15:20:04,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:20:04,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:20:04,070 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 15:20:04,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-04 15:20:04,071 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 15:20:04,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:20:04,071 INFO L85 PathProgramCache]: Analyzing trace with hash 197259702, now seen corresponding path program 46 times [2024-06-04 15:20:04,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:20:04,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619008149] [2024-06-04 15:20:04,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:20:04,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:20:04,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:20:04,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:20:04,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:20:04,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619008149] [2024-06-04 15:20:04,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619008149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:20:04,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:20:04,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:20:04,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778595944] [2024-06-04 15:20:04,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:20:04,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:20:04,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:20:04,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:20:04,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:20:04,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:20:04,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 304 transitions, 3211 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:20:04,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:20:04,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:20:04,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:20:05,436 INFO L124 PetriNetUnfolderBase]: 939/1860 cut-off events. [2024-06-04 15:20:05,436 INFO L125 PetriNetUnfolderBase]: For 301800/301800 co-relation queries the response was YES. [2024-06-04 15:20:05,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12425 conditions, 1860 events. 939/1860 cut-off events. For 301800/301800 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 11889 event pairs, 276 based on Foata normal form. 2/1858 useless extension candidates. Maximal degree in co-relation 12247. Up to 1312 conditions per place. [2024-06-04 15:20:05,461 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 227 selfloop transitions, 93 changer transitions 0/322 dead transitions. [2024-06-04 15:20:05,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 322 transitions, 3942 flow [2024-06-04 15:20:05,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:20:05,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:20:05,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-04 15:20:05,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-04 15:20:05,462 INFO L175 Difference]: Start difference. First operand has 436 places, 304 transitions, 3211 flow. Second operand 11 states and 125 transitions. [2024-06-04 15:20:05,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 322 transitions, 3942 flow [2024-06-04 15:20:07,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 322 transitions, 3641 flow, removed 21 selfloop flow, removed 12 redundant places. [2024-06-04 15:20:07,339 INFO L231 Difference]: Finished difference. Result has 435 places, 305 transitions, 3145 flow [2024-06-04 15:20:07,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2912, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3145, PETRI_PLACES=435, PETRI_TRANSITIONS=305} [2024-06-04 15:20:07,340 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 404 predicate places. [2024-06-04 15:20:07,340 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 305 transitions, 3145 flow [2024-06-04 15:20:07,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:20:07,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:20:07,340 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 15:20:07,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-04 15:20:07,341 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 15:20:07,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:20:07,341 INFO L85 PathProgramCache]: Analyzing trace with hash 2088740774, now seen corresponding path program 47 times [2024-06-04 15:20:07,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:20:07,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096479436] [2024-06-04 15:20:07,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:20:07,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:20:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:20:08,374 INFO 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 15:20:08,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:20:08,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096479436] [2024-06-04 15:20:08,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096479436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:20:08,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:20:08,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:20:08,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617809459] [2024-06-04 15:20:08,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:20:08,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:20:08,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:20:08,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:20:08,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:20:08,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:20:08,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 305 transitions, 3145 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:20:08,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:20:08,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:20:08,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:20:09,003 INFO L124 PetriNetUnfolderBase]: 943/1868 cut-off events. [2024-06-04 15:20:09,003 INFO L125 PetriNetUnfolderBase]: For 306415/306415 co-relation queries the response was YES. [2024-06-04 15:20:09,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12389 conditions, 1868 events. 943/1868 cut-off events. For 306415/306415 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 11963 event pairs, 246 based on Foata normal form. 2/1866 useless extension candidates. Maximal degree in co-relation 12211. Up to 1320 conditions per place. [2024-06-04 15:20:09,026 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 218 selfloop transitions, 103 changer transitions 0/323 dead transitions. [2024-06-04 15:20:09,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 323 transitions, 3878 flow [2024-06-04 15:20:09,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:20:09,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:20:09,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-04 15:20:09,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-04 15:20:09,028 INFO L175 Difference]: Start difference. First operand has 435 places, 305 transitions, 3145 flow. Second operand 11 states and 123 transitions. [2024-06-04 15:20:09,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 323 transitions, 3878 flow [2024-06-04 15:20:10,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 323 transitions, 3656 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-04 15:20:10,603 INFO L231 Difference]: Finished difference. Result has 437 places, 306 transitions, 3178 flow [2024-06-04 15:20:10,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2923, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3178, PETRI_PLACES=437, PETRI_TRANSITIONS=306} [2024-06-04 15:20:10,604 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 406 predicate places. [2024-06-04 15:20:10,604 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 306 transitions, 3178 flow [2024-06-04 15:20:10,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:20:10,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:20:10,604 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 15:20:10,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-04 15:20:10,605 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 15:20:10,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:20:10,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1412656656, now seen corresponding path program 48 times [2024-06-04 15:20:10,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:20:10,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417717325] [2024-06-04 15:20:10,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:20:10,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:20:10,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:20:11,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:20:11,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:20:11,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417717325] [2024-06-04 15:20:11,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417717325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:20:11,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:20:11,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:20:11,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455577772] [2024-06-04 15:20:11,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:20:11,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:20:11,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:20:11,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:20:11,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:20:11,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:20:11,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 306 transitions, 3178 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:20:11,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:20:11,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:20:11,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:20:12,105 INFO L124 PetriNetUnfolderBase]: 947/1876 cut-off events. [2024-06-04 15:20:12,105 INFO L125 PetriNetUnfolderBase]: For 311364/311364 co-relation queries the response was YES. [2024-06-04 15:20:12,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12492 conditions, 1876 events. 947/1876 cut-off events. For 311364/311364 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 12007 event pairs, 278 based on Foata normal form. 2/1874 useless extension candidates. Maximal degree in co-relation 12313. Up to 1314 conditions per place. [2024-06-04 15:20:12,130 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 228 selfloop transitions, 94 changer transitions 0/324 dead transitions. [2024-06-04 15:20:12,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 324 transitions, 3913 flow [2024-06-04 15:20:12,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:20:12,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:20:12,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-04 15:20:12,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-04 15:20:12,131 INFO L175 Difference]: Start difference. First operand has 437 places, 306 transitions, 3178 flow. Second operand 11 states and 126 transitions. [2024-06-04 15:20:12,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 324 transitions, 3913 flow [2024-06-04 15:20:13,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 324 transitions, 3669 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-04 15:20:13,758 INFO L231 Difference]: Finished difference. Result has 439 places, 307 transitions, 3173 flow [2024-06-04 15:20:13,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2934, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3173, PETRI_PLACES=439, PETRI_TRANSITIONS=307} [2024-06-04 15:20:13,759 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 408 predicate places. [2024-06-04 15:20:13,759 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 307 transitions, 3173 flow [2024-06-04 15:20:13,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:20:13,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:20:13,759 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 15:20:13,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-04 15:20:13,760 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 15:20:13,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:20:13,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1412512506, now seen corresponding path program 49 times [2024-06-04 15:20:13,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:20:13,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877839434] [2024-06-04 15:20:13,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:20:13,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:20:13,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:20:14,598 INFO 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 15:20:14,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:20:14,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877839434] [2024-06-04 15:20:14,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877839434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:20:14,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:20:14,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:20:14,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508731791] [2024-06-04 15:20:14,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:20:14,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:20:14,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:20:14,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:20:14,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:20:14,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:20:14,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 307 transitions, 3173 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:20:14,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:20:14,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:20:14,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:20:15,236 INFO L124 PetriNetUnfolderBase]: 958/1897 cut-off events. [2024-06-04 15:20:15,237 INFO L125 PetriNetUnfolderBase]: For 333911/333911 co-relation queries the response was YES. [2024-06-04 15:20:15,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12953 conditions, 1897 events. 958/1897 cut-off events. For 333911/333911 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 12203 event pairs, 283 based on Foata normal form. 2/1895 useless extension candidates. Maximal degree in co-relation 12773. Up to 1288 conditions per place. [2024-06-04 15:20:15,261 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 228 selfloop transitions, 97 changer transitions 0/327 dead transitions. [2024-06-04 15:20:15,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 327 transitions, 4219 flow [2024-06-04 15:20:15,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:20:15,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:20:15,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-04 15:20:15,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-04 15:20:15,263 INFO L175 Difference]: Start difference. First operand has 439 places, 307 transitions, 3173 flow. Second operand 11 states and 127 transitions. [2024-06-04 15:20:15,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 327 transitions, 4219 flow [2024-06-04 15:20:16,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 327 transitions, 3991 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-04 15:20:16,900 INFO L231 Difference]: Finished difference. Result has 441 places, 309 transitions, 3239 flow [2024-06-04 15:20:16,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2945, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3239, PETRI_PLACES=441, PETRI_TRANSITIONS=309} [2024-06-04 15:20:16,900 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 410 predicate places. [2024-06-04 15:20:16,900 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 309 transitions, 3239 flow [2024-06-04 15:20:16,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:20:16,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:20:16,900 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 15:20:16,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-04 15:20:16,901 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 15:20:16,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:20:16,901 INFO L85 PathProgramCache]: Analyzing trace with hash 2088735194, now seen corresponding path program 50 times [2024-06-04 15:20:16,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:20:16,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388040629] [2024-06-04 15:20:16,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:20:16,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:20:16,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:20:17,783 INFO 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 15:20:17,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:20:17,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388040629] [2024-06-04 15:20:17,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388040629] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:20:17,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:20:17,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:20:17,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888395669] [2024-06-04 15:20:17,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:20:17,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:20:17,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:20:17,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:20:17,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:20:17,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:20:17,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 309 transitions, 3239 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:20:17,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:20:17,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:20:17,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:20:18,417 INFO L124 PetriNetUnfolderBase]: 962/1905 cut-off events. [2024-06-04 15:20:18,417 INFO L125 PetriNetUnfolderBase]: For 339390/339390 co-relation queries the response was YES. [2024-06-04 15:20:18,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13044 conditions, 1905 events. 962/1905 cut-off events. For 339390/339390 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 12250 event pairs, 251 based on Foata normal form. 2/1903 useless extension candidates. Maximal degree in co-relation 12863. Up to 1337 conditions per place. [2024-06-04 15:20:18,442 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 220 selfloop transitions, 105 changer transitions 0/327 dead transitions. [2024-06-04 15:20:18,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 327 transitions, 3984 flow [2024-06-04 15:20:18,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:20:18,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:20:18,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-04 15:20:18,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-04 15:20:18,444 INFO L175 Difference]: Start difference. First operand has 441 places, 309 transitions, 3239 flow. Second operand 11 states and 124 transitions. [2024-06-04 15:20:18,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 327 transitions, 3984 flow [2024-06-04 15:20:20,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 327 transitions, 3827 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-04 15:20:20,078 INFO L231 Difference]: Finished difference. Result has 445 places, 310 transitions, 3347 flow [2024-06-04 15:20:20,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3082, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3347, PETRI_PLACES=445, PETRI_TRANSITIONS=310} [2024-06-04 15:20:20,078 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 414 predicate places. [2024-06-04 15:20:20,078 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 310 transitions, 3347 flow [2024-06-04 15:20:20,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:20:20,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:20:20,079 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 15:20:20,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-04 15:20:20,079 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 15:20:20,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:20:20,079 INFO L85 PathProgramCache]: Analyzing trace with hash 2096369130, now seen corresponding path program 10 times [2024-06-04 15:20:20,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:20:20,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203747914] [2024-06-04 15:20:20,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:20:20,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:20:20,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:20:20,819 INFO 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 15:20:20,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:20:20,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203747914] [2024-06-04 15:20:20,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203747914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:20:20,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:20:20,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:20:20,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533326023] [2024-06-04 15:20:20,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:20:20,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:20:20,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:20:20,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:20:20,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:20:20,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:20:20,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 310 transitions, 3347 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:20:20,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:20:20,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:20:20,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:20:21,452 INFO L124 PetriNetUnfolderBase]: 996/1979 cut-off events. [2024-06-04 15:20:21,453 INFO L125 PetriNetUnfolderBase]: For 456827/456827 co-relation queries the response was YES. [2024-06-04 15:20:21,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14565 conditions, 1979 events. 996/1979 cut-off events. For 456827/456827 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 12815 event pairs, 269 based on Foata normal form. 8/1983 useless extension candidates. Maximal degree in co-relation 14382. Up to 1331 conditions per place. [2024-06-04 15:20:21,478 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 223 selfloop transitions, 101 changer transitions 8/334 dead transitions. [2024-06-04 15:20:21,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 334 transitions, 4400 flow [2024-06-04 15:20:21,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:20:21,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:20:21,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-04 15:20:21,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-04 15:20:21,479 INFO L175 Difference]: Start difference. First operand has 445 places, 310 transitions, 3347 flow. Second operand 11 states and 129 transitions. [2024-06-04 15:20:21,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 334 transitions, 4400 flow [2024-06-04 15:20:23,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 334 transitions, 4146 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-04 15:20:23,388 INFO L231 Difference]: Finished difference. Result has 447 places, 307 transitions, 3279 flow [2024-06-04 15:20:23,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3093, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3279, PETRI_PLACES=447, PETRI_TRANSITIONS=307} [2024-06-04 15:20:23,389 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 416 predicate places. [2024-06-04 15:20:23,389 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 307 transitions, 3279 flow [2024-06-04 15:20:23,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:20:23,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:20:23,389 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 15:20:23,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-04 15:20:23,390 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 15:20:23,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:20:23,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1611964026, now seen corresponding path program 51 times [2024-06-04 15:20:23,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:20:23,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909143962] [2024-06-04 15:20:23,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:20:23,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:20:23,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:20:24,293 INFO 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 15:20:24,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:20:24,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909143962] [2024-06-04 15:20:24,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909143962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:20:24,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:20:24,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:20:24,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838217919] [2024-06-04 15:20:24,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:20:24,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:20:24,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:20:24,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:20:24,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:20:24,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:20:24,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 307 transitions, 3279 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:20:24,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:20:24,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:20:24,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:20:24,951 INFO L124 PetriNetUnfolderBase]: 981/1946 cut-off events. [2024-06-04 15:20:24,951 INFO L125 PetriNetUnfolderBase]: For 413376/413376 co-relation queries the response was YES. [2024-06-04 15:20:24,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14484 conditions, 1946 events. 981/1946 cut-off events. For 413376/413376 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 12518 event pairs, 301 based on Foata normal form. 2/1944 useless extension candidates. Maximal degree in co-relation 14300. Up to 1401 conditions per place. [2024-06-04 15:20:24,978 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 230 selfloop transitions, 93 changer transitions 0/325 dead transitions. [2024-06-04 15:20:24,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 325 transitions, 4020 flow [2024-06-04 15:20:24,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:20:24,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:20:24,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-04 15:20:24,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-04 15:20:24,979 INFO L175 Difference]: Start difference. First operand has 447 places, 307 transitions, 3279 flow. Second operand 11 states and 122 transitions. [2024-06-04 15:20:24,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 325 transitions, 4020 flow [2024-06-04 15:20:26,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 325 transitions, 3815 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 15:20:26,907 INFO L231 Difference]: Finished difference. Result has 444 places, 308 transitions, 3313 flow [2024-06-04 15:20:26,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3074, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3313, PETRI_PLACES=444, PETRI_TRANSITIONS=308} [2024-06-04 15:20:26,908 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 413 predicate places. [2024-06-04 15:20:26,908 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 308 transitions, 3313 flow [2024-06-04 15:20:26,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:20:26,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:20:26,908 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 15:20:26,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-04 15:20:26,909 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 15:20:26,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:20:26,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1619592382, now seen corresponding path program 11 times [2024-06-04 15:20:26,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:20:26,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516149632] [2024-06-04 15:20:26,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:20:26,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:20:26,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:20:27,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:20:27,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:20:27,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516149632] [2024-06-04 15:20:27,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516149632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:20:27,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:20:27,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:20:27,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337243115] [2024-06-04 15:20:27,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:20:27,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:20:27,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:20:27,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:20:27,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:20:27,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:20:27,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 308 transitions, 3313 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:20:27,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:20:27,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:20:27,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:20:28,324 INFO L124 PetriNetUnfolderBase]: 994/1981 cut-off events. [2024-06-04 15:20:28,325 INFO L125 PetriNetUnfolderBase]: For 471253/471253 co-relation queries the response was YES. [2024-06-04 15:20:28,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14706 conditions, 1981 events. 994/1981 cut-off events. For 471253/471253 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 12800 event pairs, 304 based on Foata normal form. 8/1985 useless extension candidates. Maximal degree in co-relation 14524. Up to 1331 conditions per place. [2024-06-04 15:20:28,350 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 227 selfloop transitions, 92 changer transitions 8/329 dead transitions. [2024-06-04 15:20:28,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 329 transitions, 4283 flow [2024-06-04 15:20:28,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:20:28,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:20:28,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-04 15:20:28,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-04 15:20:28,351 INFO L175 Difference]: Start difference. First operand has 444 places, 308 transitions, 3313 flow. Second operand 11 states and 125 transitions. [2024-06-04 15:20:28,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 329 transitions, 4283 flow [2024-06-04 15:20:30,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 329 transitions, 4057 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-04 15:20:30,159 INFO L231 Difference]: Finished difference. Result has 446 places, 304 transitions, 3239 flow [2024-06-04 15:20:30,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3087, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3239, PETRI_PLACES=446, PETRI_TRANSITIONS=304} [2024-06-04 15:20:30,159 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 415 predicate places. [2024-06-04 15:20:30,159 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 304 transitions, 3239 flow [2024-06-04 15:20:30,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:20:30,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:20:30,160 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 15:20:30,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-04 15:20:30,160 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 15:20:30,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:20:30,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1611958446, now seen corresponding path program 52 times [2024-06-04 15:20:30,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:20:30,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683445448] [2024-06-04 15:20:30,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:20:30,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:20:30,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:20:31,036 INFO 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 15:20:31,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:20:31,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683445448] [2024-06-04 15:20:31,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683445448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:20:31,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:20:31,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:20:31,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399097779] [2024-06-04 15:20:31,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:20:31,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:20:31,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:20:31,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:20:31,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:20:31,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:20:31,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 304 transitions, 3239 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:20:31,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:20:31,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:20:31,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:20:31,635 INFO L124 PetriNetUnfolderBase]: 972/1935 cut-off events. [2024-06-04 15:20:31,636 INFO L125 PetriNetUnfolderBase]: For 410873/410873 co-relation queries the response was YES. [2024-06-04 15:20:31,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14225 conditions, 1935 events. 972/1935 cut-off events. For 410873/410873 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 12433 event pairs, 303 based on Foata normal form. 2/1933 useless extension candidates. Maximal degree in co-relation 14042. Up to 1373 conditions per place. [2024-06-04 15:20:31,662 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 224 selfloop transitions, 94 changer transitions 0/320 dead transitions. [2024-06-04 15:20:31,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 320 transitions, 3917 flow [2024-06-04 15:20:31,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:20:31,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:20:31,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-04 15:20:31,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3352272727272727 [2024-06-04 15:20:31,663 INFO L175 Difference]: Start difference. First operand has 446 places, 304 transitions, 3239 flow. Second operand 11 states and 118 transitions. [2024-06-04 15:20:31,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 320 transitions, 3917 flow [2024-06-04 15:20:33,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 320 transitions, 3618 flow, removed 25 selfloop flow, removed 12 redundant places. [2024-06-04 15:20:33,333 INFO L231 Difference]: Finished difference. Result has 442 places, 304 transitions, 3132 flow [2024-06-04 15:20:33,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2940, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3132, PETRI_PLACES=442, PETRI_TRANSITIONS=304} [2024-06-04 15:20:33,334 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 411 predicate places. [2024-06-04 15:20:33,334 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 304 transitions, 3132 flow [2024-06-04 15:20:33,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:20:33,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:20:33,334 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 15:20:33,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-04 15:20:33,335 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 15:20:33,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:20:33,335 INFO L85 PathProgramCache]: Analyzing trace with hash 472526910, now seen corresponding path program 53 times [2024-06-04 15:20:33,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:20:33,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320634861] [2024-06-04 15:20:33,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:20:33,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:20:33,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:20:34,211 INFO 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 15:20:34,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:20:34,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320634861] [2024-06-04 15:20:34,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320634861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:20:34,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:20:34,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:20:34,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444086153] [2024-06-04 15:20:34,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:20:34,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:20:34,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:20:34,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:20:34,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:20:34,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:20:34,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 304 transitions, 3132 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:20:34,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:20:34,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:20:34,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:20:34,943 INFO L124 PetriNetUnfolderBase]: 969/1930 cut-off events. [2024-06-04 15:20:34,943 INFO L125 PetriNetUnfolderBase]: For 363666/363666 co-relation queries the response was YES. [2024-06-04 15:20:34,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13449 conditions, 1930 events. 969/1930 cut-off events. For 363666/363666 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 12423 event pairs, 274 based on Foata normal form. 2/1928 useless extension candidates. Maximal degree in co-relation 13269. Up to 1388 conditions per place. [2024-06-04 15:20:34,968 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 214 selfloop transitions, 104 changer transitions 0/320 dead transitions. [2024-06-04 15:20:34,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 320 transitions, 3859 flow [2024-06-04 15:20:34,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:20:34,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:20:34,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-04 15:20:34,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32386363636363635 [2024-06-04 15:20:34,969 INFO L175 Difference]: Start difference. First operand has 442 places, 304 transitions, 3132 flow. Second operand 11 states and 114 transitions. [2024-06-04 15:20:34,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 320 transitions, 3859 flow [2024-06-04 15:20:36,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 320 transitions, 3653 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 15:20:36,260 INFO L231 Difference]: Finished difference. Result has 443 places, 305 transitions, 3191 flow [2024-06-04 15:20:36,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2926, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3191, PETRI_PLACES=443, PETRI_TRANSITIONS=305} [2024-06-04 15:20:36,261 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 412 predicate places. [2024-06-04 15:20:36,261 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 305 transitions, 3191 flow [2024-06-04 15:20:36,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:20:36,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:20:36,261 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 15:20:36,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-04 15:20:36,262 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 15:20:36,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:20:36,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1889433404, now seen corresponding path program 54 times [2024-06-04 15:20:36,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:20:36,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684026996] [2024-06-04 15:20:36,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:20:36,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:20:36,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:20:37,084 INFO 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 15:20:37,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:20:37,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684026996] [2024-06-04 15:20:37,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684026996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:20:37,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:20:37,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:20:37,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087325352] [2024-06-04 15:20:37,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:20:37,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:20:37,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:20:37,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:20:37,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:20:37,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:20:37,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 305 transitions, 3191 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:20:37,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:20:37,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:20:37,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:20:37,671 INFO L124 PetriNetUnfolderBase]: 973/1938 cut-off events. [2024-06-04 15:20:37,671 INFO L125 PetriNetUnfolderBase]: For 370669/370669 co-relation queries the response was YES. [2024-06-04 15:20:37,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13620 conditions, 1938 events. 973/1938 cut-off events. For 370669/370669 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 12478 event pairs, 274 based on Foata normal form. 2/1936 useless extension candidates. Maximal degree in co-relation 13439. Up to 1382 conditions per place. [2024-06-04 15:20:37,697 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 214 selfloop transitions, 105 changer transitions 0/321 dead transitions. [2024-06-04 15:20:37,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 321 transitions, 3920 flow [2024-06-04 15:20:37,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:20:37,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:20:37,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-04 15:20:37,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-04 15:20:37,698 INFO L175 Difference]: Start difference. First operand has 443 places, 305 transitions, 3191 flow. Second operand 11 states and 115 transitions. [2024-06-04 15:20:37,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 321 transitions, 3920 flow [2024-06-04 15:20:39,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 321 transitions, 3666 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-04 15:20:39,292 INFO L231 Difference]: Finished difference. Result has 445 places, 306 transitions, 3206 flow [2024-06-04 15:20:39,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2937, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3206, PETRI_PLACES=445, PETRI_TRANSITIONS=306} [2024-06-04 15:20:39,293 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 414 predicate places. [2024-06-04 15:20:39,293 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 306 transitions, 3206 flow [2024-06-04 15:20:39,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:20:39,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:20:39,293 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 15:20:39,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-04 15:20:39,294 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 15:20:39,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:20:39,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1889289254, now seen corresponding path program 55 times [2024-06-04 15:20:39,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:20:39,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149595314] [2024-06-04 15:20:39,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:20:39,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:20:39,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:20:40,254 INFO 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 15:20:40,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:20:40,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149595314] [2024-06-04 15:20:40,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149595314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:20:40,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:20:40,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:20:40,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462400582] [2024-06-04 15:20:40,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:20:40,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:20:40,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:20:40,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:20:40,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:20:40,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:20:40,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 306 transitions, 3206 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:20:40,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:20:40,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:20:40,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:20:40,894 INFO L124 PetriNetUnfolderBase]: 970/1933 cut-off events. [2024-06-04 15:20:40,894 INFO L125 PetriNetUnfolderBase]: For 359776/359776 co-relation queries the response was YES. [2024-06-04 15:20:40,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13269 conditions, 1933 events. 970/1933 cut-off events. For 359776/359776 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 12453 event pairs, 269 based on Foata normal form. 2/1931 useless extension candidates. Maximal degree in co-relation 13087. Up to 1297 conditions per place. [2024-06-04 15:20:40,925 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 206 selfloop transitions, 113 changer transitions 0/321 dead transitions. [2024-06-04 15:20:40,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 321 transitions, 3880 flow [2024-06-04 15:20:40,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:20:40,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:20:40,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-04 15:20:40,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-04 15:20:40,927 INFO L175 Difference]: Start difference. First operand has 445 places, 306 transitions, 3206 flow. Second operand 11 states and 115 transitions. [2024-06-04 15:20:40,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 321 transitions, 3880 flow [2024-06-04 15:20:42,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 321 transitions, 3598 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-04 15:20:42,677 INFO L231 Difference]: Finished difference. Result has 447 places, 306 transitions, 3154 flow [2024-06-04 15:20:42,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2924, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3154, PETRI_PLACES=447, PETRI_TRANSITIONS=306} [2024-06-04 15:20:42,678 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 416 predicate places. [2024-06-04 15:20:42,678 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 306 transitions, 3154 flow [2024-06-04 15:20:42,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:20:42,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:20:42,678 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 15:20:42,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-04 15:20:42,679 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 15:20:42,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:20:42,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1003565323, now seen corresponding path program 1 times [2024-06-04 15:20:42,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:20:42,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564141067] [2024-06-04 15:20:42,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:20:42,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:20:42,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:20:43,607 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 15:20:43,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:20:43,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564141067] [2024-06-04 15:20:43,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564141067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:20:43,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:20:43,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:20:43,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685681019] [2024-06-04 15:20:43,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:20:43,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:20:43,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:20:43,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:20:43,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:20:43,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:20:43,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 306 transitions, 3154 flow. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:20:43,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:20:43,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:20:43,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:20:44,268 INFO L124 PetriNetUnfolderBase]: 978/1953 cut-off events. [2024-06-04 15:20:44,268 INFO L125 PetriNetUnfolderBase]: For 395492/395492 co-relation queries the response was YES. [2024-06-04 15:20:44,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13248 conditions, 1953 events. 978/1953 cut-off events. For 395492/395492 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 12607 event pairs, 290 based on Foata normal form. 6/1958 useless extension candidates. Maximal degree in co-relation 13065. Up to 1781 conditions per place. [2024-06-04 15:20:44,295 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 283 selfloop transitions, 18 changer transitions 27/330 dead transitions. [2024-06-04 15:20:44,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 330 transitions, 3872 flow [2024-06-04 15:20:44,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:20:44,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:20:44,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 122 transitions. [2024-06-04 15:20:44,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3177083333333333 [2024-06-04 15:20:44,296 INFO L175 Difference]: Start difference. First operand has 447 places, 306 transitions, 3154 flow. Second operand 12 states and 122 transitions. [2024-06-04 15:20:44,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 330 transitions, 3872 flow [2024-06-04 15:20:45,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 330 transitions, 3324 flow, removed 15 selfloop flow, removed 13 redundant places. [2024-06-04 15:20:45,993 INFO L231 Difference]: Finished difference. Result has 446 places, 294 transitions, 2533 flow [2024-06-04 15:20:45,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2606, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2533, PETRI_PLACES=446, PETRI_TRANSITIONS=294} [2024-06-04 15:20:45,994 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 415 predicate places. [2024-06-04 15:20:45,994 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 294 transitions, 2533 flow [2024-06-04 15:20:45,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:20:45,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:20:45,994 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 15:20:45,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-04 15:20:45,995 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 15:20:45,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:20:45,995 INFO L85 PathProgramCache]: Analyzing trace with hash 980751795, now seen corresponding path program 2 times [2024-06-04 15:20:45,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:20:45,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194653432] [2024-06-04 15:20:45,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:20:45,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:20:46,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:20:46,938 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 15:20:46,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:20:46,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194653432] [2024-06-04 15:20:46,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194653432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:20:46,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:20:46,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:20:46,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471030446] [2024-06-04 15:20:46,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:20:46,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:20:46,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:20:46,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:20:46,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:20:47,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:20:47,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 294 transitions, 2533 flow. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:20:47,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:20:47,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:20:47,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:20:47,474 INFO L124 PetriNetUnfolderBase]: 930/1861 cut-off events. [2024-06-04 15:20:47,475 INFO L125 PetriNetUnfolderBase]: For 394598/394598 co-relation queries the response was YES. [2024-06-04 15:20:47,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12045 conditions, 1861 events. 930/1861 cut-off events. For 394598/394598 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 11925 event pairs, 252 based on Foata normal form. 6/1866 useless extension candidates. Maximal degree in co-relation 11863. Up to 1387 conditions per place. [2024-06-04 15:20:47,500 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 233 selfloop transitions, 56 changer transitions 26/317 dead transitions. [2024-06-04 15:20:47,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 317 transitions, 3225 flow [2024-06-04 15:20:47,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:20:47,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:20:47,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-04 15:20:47,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3307291666666667 [2024-06-04 15:20:47,501 INFO L175 Difference]: Start difference. First operand has 446 places, 294 transitions, 2533 flow. Second operand 12 states and 127 transitions. [2024-06-04 15:20:47,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 317 transitions, 3225 flow [2024-06-04 15:20:48,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 317 transitions, 3167 flow, removed 11 selfloop flow, removed 16 redundant places. [2024-06-04 15:20:48,925 INFO L231 Difference]: Finished difference. Result has 426 places, 276 transitions, 2409 flow [2024-06-04 15:20:48,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2475, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2409, PETRI_PLACES=426, PETRI_TRANSITIONS=276} [2024-06-04 15:20:48,925 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 395 predicate places. [2024-06-04 15:20:48,926 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 276 transitions, 2409 flow [2024-06-04 15:20:48,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:20:48,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:20:48,926 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 15:20:48,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-04 15:20:48,926 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 15:20:48,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:20:48,927 INFO L85 PathProgramCache]: Analyzing trace with hash 985393425, now seen corresponding path program 3 times [2024-06-04 15:20:48,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:20:48,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386678041] [2024-06-04 15:20:48,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:20:48,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:20:48,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:20:49,831 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 15:20:49,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:20:49,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386678041] [2024-06-04 15:20:49,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386678041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:20:49,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:20:49,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:20:49,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631566503] [2024-06-04 15:20:49,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:20:49,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:20:49,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:20:49,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:20:49,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:20:49,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:20:49,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 276 transitions, 2409 flow. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:20:49,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:20:49,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:20:49,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:20:50,365 INFO L124 PetriNetUnfolderBase]: 855/1720 cut-off events. [2024-06-04 15:20:50,365 INFO L125 PetriNetUnfolderBase]: For 345306/345306 co-relation queries the response was YES. [2024-06-04 15:20:50,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10813 conditions, 1720 events. 855/1720 cut-off events. For 345306/345306 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 10800 event pairs, 237 based on Foata normal form. 6/1725 useless extension candidates. Maximal degree in co-relation 10641. Up to 1400 conditions per place. [2024-06-04 15:20:50,387 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 222 selfloop transitions, 43 changer transitions 32/299 dead transitions. [2024-06-04 15:20:50,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 299 transitions, 3069 flow [2024-06-04 15:20:50,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:20:50,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:20:50,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-04 15:20:50,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-04 15:20:50,388 INFO L175 Difference]: Start difference. First operand has 426 places, 276 transitions, 2409 flow. Second operand 12 states and 126 transitions. [2024-06-04 15:20:50,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 299 transitions, 3069 flow [2024-06-04 15:20:51,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 299 transitions, 2910 flow, removed 11 selfloop flow, removed 17 redundant places. [2024-06-04 15:20:51,685 INFO L231 Difference]: Finished difference. Result has 410 places, 252 transitions, 2090 flow [2024-06-04 15:20:51,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2250, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2090, PETRI_PLACES=410, PETRI_TRANSITIONS=252} [2024-06-04 15:20:51,688 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 379 predicate places. [2024-06-04 15:20:51,688 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 252 transitions, 2090 flow [2024-06-04 15:20:51,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:20:51,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:20:51,688 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 15:20:51,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-04 15:20:51,689 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 15:20:51,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:20:51,689 INFO L85 PathProgramCache]: Analyzing trace with hash 985220445, now seen corresponding path program 4 times [2024-06-04 15:20:51,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:20:51,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743293957] [2024-06-04 15:20:51,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:20:51,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:20:51,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:20:52,666 INFO 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 15:20:52,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:20:52,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743293957] [2024-06-04 15:20:52,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743293957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:20:52,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:20:52,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:20:52,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432487846] [2024-06-04 15:20:52,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:20:52,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:20:52,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:20:52,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:20:52,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:20:52,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:20:52,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 252 transitions, 2090 flow. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:20:52,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:20:52,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:20:52,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:20:53,259 INFO L124 PetriNetUnfolderBase]: 786/1593 cut-off events. [2024-06-04 15:20:53,259 INFO L125 PetriNetUnfolderBase]: For 334278/334278 co-relation queries the response was YES. [2024-06-04 15:20:53,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10029 conditions, 1593 events. 786/1593 cut-off events. For 334278/334278 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 9815 event pairs, 227 based on Foata normal form. 6/1598 useless extension candidates. Maximal degree in co-relation 9861. Up to 1306 conditions per place. [2024-06-04 15:20:53,277 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 206 selfloop transitions, 23 changer transitions 44/275 dead transitions. [2024-06-04 15:20:53,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 275 transitions, 2700 flow [2024-06-04 15:20:53,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:20:53,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:20:53,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 124 transitions. [2024-06-04 15:20:53,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3229166666666667 [2024-06-04 15:20:53,279 INFO L175 Difference]: Start difference. First operand has 410 places, 252 transitions, 2090 flow. Second operand 12 states and 124 transitions. [2024-06-04 15:20:53,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 275 transitions, 2700 flow [2024-06-04 15:20:54,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 275 transitions, 2572 flow, removed 16 selfloop flow, removed 13 redundant places. [2024-06-04 15:20:54,677 INFO L231 Difference]: Finished difference. Result has 390 places, 220 transitions, 1678 flow [2024-06-04 15:20:54,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1962, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1678, PETRI_PLACES=390, PETRI_TRANSITIONS=220} [2024-06-04 15:20:54,678 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 359 predicate places. [2024-06-04 15:20:54,678 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 220 transitions, 1678 flow [2024-06-04 15:20:54,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:20:54,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:20:54,678 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 15:20:54,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-04 15:20:54,678 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 15:20:54,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:20:54,679 INFO L85 PathProgramCache]: Analyzing trace with hash 869929275, now seen corresponding path program 5 times [2024-06-04 15:20:54,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:20:54,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389813854] [2024-06-04 15:20:54,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:20:54,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:20:54,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:20:55,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:20:55,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:20:55,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389813854] [2024-06-04 15:20:55,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389813854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:20:55,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:20:55,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:20:55,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139318240] [2024-06-04 15:20:55,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:20:55,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:20:55,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:20:55,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:20:55,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:20:55,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:20:55,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 220 transitions, 1678 flow. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:20:55,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:20:55,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:20:55,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:20:56,044 INFO L124 PetriNetUnfolderBase]: 694/1413 cut-off events. [2024-06-04 15:20:56,044 INFO L125 PetriNetUnfolderBase]: For 333758/333758 co-relation queries the response was YES. [2024-06-04 15:20:56,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9109 conditions, 1413 events. 694/1413 cut-off events. For 333758/333758 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 8488 event pairs, 215 based on Foata normal form. 6/1418 useless extension candidates. Maximal degree in co-relation 8945. Up to 1200 conditions per place. [2024-06-04 15:20:56,057 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 186 selfloop transitions, 10 changer transitions 45/243 dead transitions. [2024-06-04 15:20:56,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 243 transitions, 2220 flow [2024-06-04 15:20:56,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:20:56,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:20:56,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-04 15:20:56,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3151041666666667 [2024-06-04 15:20:56,058 INFO L175 Difference]: Start difference. First operand has 390 places, 220 transitions, 1678 flow. Second operand 12 states and 121 transitions. [2024-06-04 15:20:56,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 243 transitions, 2220 flow [2024-06-04 15:20:57,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 243 transitions, 2088 flow, removed 25 selfloop flow, removed 14 redundant places. [2024-06-04 15:20:57,289 INFO L231 Difference]: Finished difference. Result has 359 places, 192 transitions, 1292 flow [2024-06-04 15:20:57,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1546, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1292, PETRI_PLACES=359, PETRI_TRANSITIONS=192} [2024-06-04 15:20:57,290 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2024-06-04 15:20:57,290 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 192 transitions, 1292 flow [2024-06-04 15:20:57,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:20:57,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:20:57,290 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 15:20:57,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-04 15:20:57,290 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 15:20:57,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:20:57,291 INFO L85 PathProgramCache]: Analyzing trace with hash 253862117, now seen corresponding path program 6 times [2024-06-04 15:20:57,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:20:57,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950745803] [2024-06-04 15:20:57,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:20:57,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:20:57,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:20:58,274 INFO 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 15:20:58,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:20:58,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950745803] [2024-06-04 15:20:58,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950745803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:20:58,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:20:58,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 15:20:58,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803429953] [2024-06-04 15:20:58,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:20:58,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 15:20:58,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:20:58,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 15:20:58,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-04 15:20:58,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:20:58,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 192 transitions, 1292 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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 15:20:58,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:20:58,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:20:58,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:20:58,724 INFO L124 PetriNetUnfolderBase]: 620/1255 cut-off events. [2024-06-04 15:20:58,724 INFO L125 PetriNetUnfolderBase]: For 333097/333097 co-relation queries the response was YES. [2024-06-04 15:20:58,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8325 conditions, 1255 events. 620/1255 cut-off events. For 333097/333097 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 7340 event pairs, 169 based on Foata normal form. 6/1260 useless extension candidates. Maximal degree in co-relation 8165. Up to 1139 conditions per place. [2024-06-04 15:20:58,739 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 179 selfloop transitions, 10 changer transitions 27/218 dead transitions. [2024-06-04 15:20:58,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 218 transitions, 1786 flow [2024-06-04 15:20:58,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 15:20:58,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 15:20:58,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 126 transitions. [2024-06-04 15:20:58,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30288461538461536 [2024-06-04 15:20:58,740 INFO L175 Difference]: Start difference. First operand has 359 places, 192 transitions, 1292 flow. Second operand 13 states and 126 transitions. [2024-06-04 15:20:58,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 218 transitions, 1786 flow [2024-06-04 15:20:59,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 218 transitions, 1686 flow, removed 17 selfloop flow, removed 22 redundant places. [2024-06-04 15:20:59,666 INFO L231 Difference]: Finished difference. Result has 322 places, 183 transitions, 1146 flow [2024-06-04 15:20:59,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1192, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1146, PETRI_PLACES=322, PETRI_TRANSITIONS=183} [2024-06-04 15:20:59,667 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 291 predicate places. [2024-06-04 15:20:59,667 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 183 transitions, 1146 flow [2024-06-04 15:20:59,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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 15:20:59,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:20:59,667 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 15:20:59,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-04 15:20:59,668 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 15:20:59,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:20:59,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1675572521, now seen corresponding path program 7 times [2024-06-04 15:20:59,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:20:59,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252329707] [2024-06-04 15:20:59,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:20:59,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:20:59,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:21:00,593 INFO 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 15:21:00,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:21:00,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252329707] [2024-06-04 15:21:00,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252329707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:21:00,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:21:00,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:21:00,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303726870] [2024-06-04 15:21:00,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:21:00,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:21:00,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:21:00,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:21:00,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:21:00,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:21:00,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 183 transitions, 1146 flow. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:00,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:21:00,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:21:00,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:21:00,949 INFO L124 PetriNetUnfolderBase]: 592/1193 cut-off events. [2024-06-04 15:21:00,949 INFO L125 PetriNetUnfolderBase]: For 332892/332892 co-relation queries the response was YES. [2024-06-04 15:21:00,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7973 conditions, 1193 events. 592/1193 cut-off events. For 332892/332892 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 6925 event pairs, 178 based on Foata normal form. 6/1198 useless extension candidates. Maximal degree in co-relation 7829. Up to 1103 conditions per place. [2024-06-04 15:21:00,965 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 171 selfloop transitions, 7 changer transitions 21/201 dead transitions. [2024-06-04 15:21:00,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 201 transitions, 1586 flow [2024-06-04 15:21:00,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:21:00,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:21:00,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 105 transitions. [2024-06-04 15:21:00,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29829545454545453 [2024-06-04 15:21:00,966 INFO L175 Difference]: Start difference. First operand has 322 places, 183 transitions, 1146 flow. Second operand 11 states and 105 transitions. [2024-06-04 15:21:00,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 201 transitions, 1586 flow [2024-06-04 15:21:02,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 201 transitions, 1531 flow, removed 6 selfloop flow, removed 18 redundant places. [2024-06-04 15:21:02,146 INFO L231 Difference]: Finished difference. Result has 304 places, 177 transitions, 1080 flow [2024-06-04 15:21:02,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1091, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1080, PETRI_PLACES=304, PETRI_TRANSITIONS=177} [2024-06-04 15:21:02,147 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 273 predicate places. [2024-06-04 15:21:02,147 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 177 transitions, 1080 flow [2024-06-04 15:21:02,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:02,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:21:02,147 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 15:21:02,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-04 15:21:02,147 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 15:21:02,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:21:02,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1567838769, now seen corresponding path program 8 times [2024-06-04 15:21:02,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:21:02,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554401602] [2024-06-04 15:21:02,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:21:02,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:21:02,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:21:02,935 INFO 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 15:21:02,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:21:02,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554401602] [2024-06-04 15:21:02,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554401602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:21:02,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:21:02,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:21:02,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909537140] [2024-06-04 15:21:02,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:21:02,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:21:02,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:21:02,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:21:02,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:21:03,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:21:03,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 177 transitions, 1080 flow. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:03,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:21:03,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:21:03,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:21:03,303 INFO L124 PetriNetUnfolderBase]: 553/1114 cut-off events. [2024-06-04 15:21:03,303 INFO L125 PetriNetUnfolderBase]: For 285296/285296 co-relation queries the response was YES. [2024-06-04 15:21:03,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6962 conditions, 1114 events. 553/1114 cut-off events. For 285296/285296 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 6383 event pairs, 147 based on Foata normal form. 6/1119 useless extension candidates. Maximal degree in co-relation 6825. Up to 892 conditions per place. [2024-06-04 15:21:03,318 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 138 selfloop transitions, 28 changer transitions 26/194 dead transitions. [2024-06-04 15:21:03,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 194 transitions, 1510 flow [2024-06-04 15:21:03,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:21:03,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:21:03,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-04 15:21:03,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-04 15:21:03,319 INFO L175 Difference]: Start difference. First operand has 304 places, 177 transitions, 1080 flow. Second operand 11 states and 110 transitions. [2024-06-04 15:21:03,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 194 transitions, 1510 flow [2024-06-04 15:21:04,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 194 transitions, 1484 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-04 15:21:04,072 INFO L231 Difference]: Finished difference. Result has 294 places, 159 transitions, 1016 flow [2024-06-04 15:21:04,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1054, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1016, PETRI_PLACES=294, PETRI_TRANSITIONS=159} [2024-06-04 15:21:04,073 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 263 predicate places. [2024-06-04 15:21:04,073 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 159 transitions, 1016 flow [2024-06-04 15:21:04,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:04,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:21:04,073 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 15:21:04,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-04 15:21:04,073 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 15:21:04,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:21:04,074 INFO L85 PathProgramCache]: Analyzing trace with hash 666095745, now seen corresponding path program 9 times [2024-06-04 15:21:04,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:21:04,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780654529] [2024-06-04 15:21:04,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:21:04,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:21:04,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:21:05,113 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 15:21:05,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:21:05,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780654529] [2024-06-04 15:21:05,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780654529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:21:05,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:21:05,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 15:21:05,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114683975] [2024-06-04 15:21:05,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:21:05,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 15:21:05,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:21:05,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 15:21:05,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-04 15:21:05,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:21:05,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 159 transitions, 1016 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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 15:21:05,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:21:05,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:21:05,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:21:05,518 INFO L124 PetriNetUnfolderBase]: 501/1018 cut-off events. [2024-06-04 15:21:05,519 INFO L125 PetriNetUnfolderBase]: For 263102/263102 co-relation queries the response was YES. [2024-06-04 15:21:05,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6563 conditions, 1018 events. 501/1018 cut-off events. For 263102/263102 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5678 event pairs, 151 based on Foata normal form. 6/1023 useless extension candidates. Maximal degree in co-relation 6431. Up to 923 conditions per place. [2024-06-04 15:21:05,528 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 146 selfloop transitions, 14 changer transitions 16/178 dead transitions. [2024-06-04 15:21:05,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 178 transitions, 1418 flow [2024-06-04 15:21:05,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:21:05,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:21:05,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 113 transitions. [2024-06-04 15:21:05,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2942708333333333 [2024-06-04 15:21:05,529 INFO L175 Difference]: Start difference. First operand has 294 places, 159 transitions, 1016 flow. Second operand 12 states and 113 transitions. [2024-06-04 15:21:05,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 178 transitions, 1418 flow [2024-06-04 15:21:06,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 178 transitions, 1338 flow, removed 12 selfloop flow, removed 19 redundant places. [2024-06-04 15:21:06,061 INFO L231 Difference]: Finished difference. Result has 271 places, 153 transitions, 929 flow [2024-06-04 15:21:06,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=936, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=929, PETRI_PLACES=271, PETRI_TRANSITIONS=153} [2024-06-04 15:21:06,061 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 240 predicate places. [2024-06-04 15:21:06,061 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 153 transitions, 929 flow [2024-06-04 15:21:06,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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 15:21:06,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:21:06,062 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 15:21:06,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-04 15:21:06,062 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 15:21:06,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:21:06,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1484543665, now seen corresponding path program 10 times [2024-06-04 15:21:06,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:21:06,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767878793] [2024-06-04 15:21:06,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:21:06,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:21:06,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:21:07,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:21:07,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:21:07,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767878793] [2024-06-04 15:21:07,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767878793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:21:07,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:21:07,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 15:21:07,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16379513] [2024-06-04 15:21:07,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:21:07,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 15:21:07,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:21:07,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 15:21:07,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-04 15:21:07,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:21:07,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 153 transitions, 929 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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 15:21:07,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:21:07,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:21:07,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:21:07,418 INFO L124 PetriNetUnfolderBase]: 484/987 cut-off events. [2024-06-04 15:21:07,419 INFO L125 PetriNetUnfolderBase]: For 217384/217384 co-relation queries the response was YES. [2024-06-04 15:21:07,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6087 conditions, 987 events. 484/987 cut-off events. For 217384/217384 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5478 event pairs, 147 based on Foata normal form. 6/992 useless extension candidates. Maximal degree in co-relation 5966. Up to 895 conditions per place. [2024-06-04 15:21:07,427 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 141 selfloop transitions, 10 changer transitions 19/172 dead transitions. [2024-06-04 15:21:07,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 172 transitions, 1317 flow [2024-06-04 15:21:07,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:21:07,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:21:07,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 112 transitions. [2024-06-04 15:21:07,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2916666666666667 [2024-06-04 15:21:07,428 INFO L175 Difference]: Start difference. First operand has 271 places, 153 transitions, 929 flow. Second operand 12 states and 112 transitions. [2024-06-04 15:21:07,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 172 transitions, 1317 flow [2024-06-04 15:21:07,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 172 transitions, 1281 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 15:21:07,921 INFO L231 Difference]: Finished difference. Result has 264 places, 146 transitions, 874 flow [2024-06-04 15:21:07,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=893, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=874, PETRI_PLACES=264, PETRI_TRANSITIONS=146} [2024-06-04 15:21:07,921 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 233 predicate places. [2024-06-04 15:21:07,921 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 146 transitions, 874 flow [2024-06-04 15:21:07,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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 15:21:07,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:21:07,922 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 15:21:07,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-04 15:21:07,922 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 15:21:07,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:21:07,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1683302919, now seen corresponding path program 11 times [2024-06-04 15:21:07,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:21:07,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335559538] [2024-06-04 15:21:07,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:21:07,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:21:07,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:21:08,828 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 15:21:08,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:21:08,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335559538] [2024-06-04 15:21:08,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335559538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:21:08,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:21:08,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:21:08,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118296858] [2024-06-04 15:21:08,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:21:08,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:21:08,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:21:08,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:21:08,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:21:08,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:21:08,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 146 transitions, 874 flow. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:08,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:21:08,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:21:08,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:21:09,210 INFO L124 PetriNetUnfolderBase]: 463/948 cut-off events. [2024-06-04 15:21:09,210 INFO L125 PetriNetUnfolderBase]: For 205646/205646 co-relation queries the response was YES. [2024-06-04 15:21:09,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5864 conditions, 948 events. 463/948 cut-off events. For 205646/205646 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5205 event pairs, 126 based on Foata normal form. 6/953 useless extension candidates. Maximal degree in co-relation 5746. Up to 688 conditions per place. [2024-06-04 15:21:09,216 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 121 selfloop transitions, 15 changer transitions 25/163 dead transitions. [2024-06-04 15:21:09,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 163 transitions, 1236 flow [2024-06-04 15:21:09,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:21:09,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:21:09,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-04 15:21:09,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3096590909090909 [2024-06-04 15:21:09,217 INFO L175 Difference]: Start difference. First operand has 264 places, 146 transitions, 874 flow. Second operand 11 states and 109 transitions. [2024-06-04 15:21:09,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 163 transitions, 1236 flow [2024-06-04 15:21:09,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 163 transitions, 1206 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-04 15:21:09,634 INFO L231 Difference]: Finished difference. Result has 254 places, 131 transitions, 796 flow [2024-06-04 15:21:09,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=844, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=796, PETRI_PLACES=254, PETRI_TRANSITIONS=131} [2024-06-04 15:21:09,635 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-04 15:21:09,635 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 131 transitions, 796 flow [2024-06-04 15:21:09,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:09,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:21:09,635 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 15:21:09,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-04 15:21:09,635 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 15:21:09,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:21:09,636 INFO L85 PathProgramCache]: Analyzing trace with hash -205604325, now seen corresponding path program 12 times [2024-06-04 15:21:09,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:21:09,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937755908] [2024-06-04 15:21:09,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:21:09,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:21:09,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:21:10,744 INFO 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 15:21:10,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:21:10,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937755908] [2024-06-04 15:21:10,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937755908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:21:10,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:21:10,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 15:21:10,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400787584] [2024-06-04 15:21:10,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:21:10,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 15:21:10,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:21:10,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 15:21:10,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-04 15:21:10,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:21:10,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 131 transitions, 796 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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 15:21:10,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:21:10,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:21:10,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:21:11,148 INFO L124 PetriNetUnfolderBase]: 418/859 cut-off events. [2024-06-04 15:21:11,148 INFO L125 PetriNetUnfolderBase]: For 190525/190525 co-relation queries the response was YES. [2024-06-04 15:21:11,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5504 conditions, 859 events. 418/859 cut-off events. For 190525/190525 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4616 event pairs, 127 based on Foata normal form. 6/864 useless extension candidates. Maximal degree in co-relation 5390. Up to 756 conditions per place. [2024-06-04 15:21:11,156 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 120 selfloop transitions, 13 changer transitions 15/150 dead transitions. [2024-06-04 15:21:11,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 150 transitions, 1142 flow [2024-06-04 15:21:11,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:21:11,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:21:11,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 113 transitions. [2024-06-04 15:21:11,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2942708333333333 [2024-06-04 15:21:11,157 INFO L175 Difference]: Start difference. First operand has 254 places, 131 transitions, 796 flow. Second operand 12 states and 113 transitions. [2024-06-04 15:21:11,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 150 transitions, 1142 flow [2024-06-04 15:21:11,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 150 transitions, 1078 flow, removed 16 selfloop flow, removed 19 redundant places. [2024-06-04 15:21:11,496 INFO L231 Difference]: Finished difference. Result has 231 places, 126 transitions, 746 flow [2024-06-04 15:21:11,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=746, PETRI_PLACES=231, PETRI_TRANSITIONS=126} [2024-06-04 15:21:11,496 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 200 predicate places. [2024-06-04 15:21:11,496 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 126 transitions, 746 flow [2024-06-04 15:21:11,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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 15:21:11,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:21:11,497 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 15:21:11,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-04 15:21:11,497 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 15:21:11,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:21:11,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1914863129, now seen corresponding path program 13 times [2024-06-04 15:21:11,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:21:11,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383606718] [2024-06-04 15:21:11,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:21:11,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:21:11,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:21:12,731 INFO 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 15:21:12,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:21:12,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383606718] [2024-06-04 15:21:12,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383606718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:21:12,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:21:12,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 15:21:12,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654718769] [2024-06-04 15:21:12,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:21:12,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 15:21:12,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:21:12,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 15:21:12,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-04 15:21:12,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:21:12,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 126 transitions, 746 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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 15:21:12,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:21:12,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:21:12,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:21:13,130 INFO L124 PetriNetUnfolderBase]: 405/832 cut-off events. [2024-06-04 15:21:13,130 INFO L125 PetriNetUnfolderBase]: For 155271/155271 co-relation queries the response was YES. [2024-06-04 15:21:13,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5058 conditions, 832 events. 405/832 cut-off events. For 155271/155271 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4430 event pairs, 125 based on Foata normal form. 6/837 useless extension candidates. Maximal degree in co-relation 4955. Up to 738 conditions per place. [2024-06-04 15:21:13,137 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 118 selfloop transitions, 11 changer transitions 14/145 dead transitions. [2024-06-04 15:21:13,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 145 transitions, 1074 flow [2024-06-04 15:21:13,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:21:13,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:21:13,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 113 transitions. [2024-06-04 15:21:13,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2942708333333333 [2024-06-04 15:21:13,138 INFO L175 Difference]: Start difference. First operand has 231 places, 126 transitions, 746 flow. Second operand 12 states and 113 transitions. [2024-06-04 15:21:13,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 145 transitions, 1074 flow [2024-06-04 15:21:13,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 145 transitions, 1038 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-04 15:21:13,379 INFO L231 Difference]: Finished difference. Result has 223 places, 122 transitions, 717 flow [2024-06-04 15:21:13,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=710, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=717, PETRI_PLACES=223, PETRI_TRANSITIONS=122} [2024-06-04 15:21:13,379 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 192 predicate places. [2024-06-04 15:21:13,379 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 122 transitions, 717 flow [2024-06-04 15:21:13,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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 15:21:13,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:21:13,380 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 15:21:13,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-04 15:21:13,380 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 15:21:13,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:21:13,380 INFO L85 PathProgramCache]: Analyzing trace with hash -2093461169, now seen corresponding path program 14 times [2024-06-04 15:21:13,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:21:13,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110226132] [2024-06-04 15:21:13,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:21:13,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:21:13,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:21:14,237 INFO 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 15:21:14,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:21:14,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110226132] [2024-06-04 15:21:14,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110226132] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:21:14,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:21:14,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:21:14,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303164140] [2024-06-04 15:21:14,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:21:14,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:21:14,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:21:14,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:21:14,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:21:14,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:21:14,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 122 transitions, 717 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:14,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:21:14,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:21:14,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:21:14,569 INFO L124 PetriNetUnfolderBase]: 391/806 cut-off events. [2024-06-04 15:21:14,569 INFO L125 PetriNetUnfolderBase]: For 142274/142274 co-relation queries the response was YES. [2024-06-04 15:21:14,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4858 conditions, 806 events. 391/806 cut-off events. For 142274/142274 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4253 event pairs, 115 based on Foata normal form. 6/811 useless extension candidates. Maximal degree in co-relation 4759. Up to 672 conditions per place. [2024-06-04 15:21:14,577 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 111 selfloop transitions, 8 changer transitions 18/139 dead transitions. [2024-06-04 15:21:14,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 139 transitions, 1029 flow [2024-06-04 15:21:14,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:21:14,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:21:14,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-04 15:21:14,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30113636363636365 [2024-06-04 15:21:14,578 INFO L175 Difference]: Start difference. First operand has 223 places, 122 transitions, 717 flow. Second operand 11 states and 106 transitions. [2024-06-04 15:21:14,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 139 transitions, 1029 flow [2024-06-04 15:21:14,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 139 transitions, 999 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 15:21:14,817 INFO L231 Difference]: Finished difference. Result has 216 places, 112 transitions, 662 flow [2024-06-04 15:21:14,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=687, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=662, PETRI_PLACES=216, PETRI_TRANSITIONS=112} [2024-06-04 15:21:14,817 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 185 predicate places. [2024-06-04 15:21:14,817 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 112 transitions, 662 flow [2024-06-04 15:21:14,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:14,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:21:14,818 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 15:21:14,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-04 15:21:14,818 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 15:21:14,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:21:14,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1369696795, now seen corresponding path program 15 times [2024-06-04 15:21:14,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:21:14,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608604109] [2024-06-04 15:21:14,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:21:14,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:21:14,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:21:15,689 INFO 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 15:21:15,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:21:15,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608604109] [2024-06-04 15:21:15,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608604109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:21:15,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:21:15,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:21:15,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468783263] [2024-06-04 15:21:15,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:21:15,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:21:15,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:21:15,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:21:15,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:21:15,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:21:15,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 112 transitions, 662 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:15,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:21:15,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:21:15,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:21:16,023 INFO L124 PetriNetUnfolderBase]: 360/745 cut-off events. [2024-06-04 15:21:16,023 INFO L125 PetriNetUnfolderBase]: For 132739/132739 co-relation queries the response was YES. [2024-06-04 15:21:16,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4601 conditions, 745 events. 360/745 cut-off events. For 132739/132739 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3854 event pairs, 115 based on Foata normal form. 6/750 useless extension candidates. Maximal degree in co-relation 4505. Up to 668 conditions per place. [2024-06-04 15:21:16,029 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 100 selfloop transitions, 3 changer transitions 24/129 dead transitions. [2024-06-04 15:21:16,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 129 transitions, 954 flow [2024-06-04 15:21:16,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:21:16,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:21:16,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 102 transitions. [2024-06-04 15:21:16,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2897727272727273 [2024-06-04 15:21:16,030 INFO L175 Difference]: Start difference. First operand has 216 places, 112 transitions, 662 flow. Second operand 11 states and 102 transitions. [2024-06-04 15:21:16,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 129 transitions, 954 flow [2024-06-04 15:21:16,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 129 transitions, 920 flow, removed 9 selfloop flow, removed 16 redundant places. [2024-06-04 15:21:16,268 INFO L231 Difference]: Finished difference. Result has 200 places, 104 transitions, 600 flow [2024-06-04 15:21:16,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=600, PETRI_PLACES=200, PETRI_TRANSITIONS=104} [2024-06-04 15:21:16,269 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 169 predicate places. [2024-06-04 15:21:16,269 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 104 transitions, 600 flow [2024-06-04 15:21:16,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:16,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:21:16,269 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 15:21:16,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-04 15:21:16,270 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 15:21:16,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:21:16,270 INFO L85 PathProgramCache]: Analyzing trace with hash 6579935, now seen corresponding path program 16 times [2024-06-04 15:21:16,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:21:16,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578589039] [2024-06-04 15:21:16,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:21:16,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:21:16,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:21:17,319 INFO 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 15:21:17,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:21:17,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578589039] [2024-06-04 15:21:17,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578589039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:21:17,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:21:17,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:21:17,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773541198] [2024-06-04 15:21:17,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:21:17,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:21:17,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:21:17,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:21:17,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:21:17,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:21:17,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 104 transitions, 600 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:17,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:21:17,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:21:17,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:21:17,684 INFO L124 PetriNetUnfolderBase]: 322/664 cut-off events. [2024-06-04 15:21:17,684 INFO L125 PetriNetUnfolderBase]: For 90964/90964 co-relation queries the response was YES. [2024-06-04 15:21:17,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3671 conditions, 664 events. 322/664 cut-off events. For 90964/90964 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3367 event pairs, 90 based on Foata normal form. 6/669 useless extension candidates. Maximal degree in co-relation 3583. Up to 413 conditions per place. [2024-06-04 15:21:17,689 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 68 selfloop transitions, 28 changer transitions 21/119 dead transitions. [2024-06-04 15:21:17,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 119 transitions, 866 flow [2024-06-04 15:21:17,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:21:17,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:21:17,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-04 15:21:17,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3039772727272727 [2024-06-04 15:21:17,690 INFO L175 Difference]: Start difference. First operand has 200 places, 104 transitions, 600 flow. Second operand 11 states and 107 transitions. [2024-06-04 15:21:17,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 119 transitions, 866 flow [2024-06-04 15:21:17,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 119 transitions, 842 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-04 15:21:17,834 INFO L231 Difference]: Finished difference. Result has 185 places, 91 transitions, 573 flow [2024-06-04 15:21:17,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=573, PETRI_PLACES=185, PETRI_TRANSITIONS=91} [2024-06-04 15:21:17,835 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 154 predicate places. [2024-06-04 15:21:17,835 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 91 transitions, 573 flow [2024-06-04 15:21:17,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:17,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:21:17,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:21:17,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-04 15:21:17,835 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 15:21:17,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:21:17,836 INFO L85 PathProgramCache]: Analyzing trace with hash 983634065, now seen corresponding path program 17 times [2024-06-04 15:21:17,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:21:17,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946564440] [2024-06-04 15:21:17,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:21:17,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:21:17,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:21:18,723 INFO 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 15:21:18,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:21:18,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946564440] [2024-06-04 15:21:18,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946564440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:21:18,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:21:18,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:21:18,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590728467] [2024-06-04 15:21:18,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:21:18,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:21:18,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:21:18,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:21:18,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:21:18,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:21:18,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 91 transitions, 573 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:18,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:21:18,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:21:18,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:21:19,026 INFO L124 PetriNetUnfolderBase]: 283/591 cut-off events. [2024-06-04 15:21:19,027 INFO L125 PetriNetUnfolderBase]: For 75414/75414 co-relation queries the response was YES. [2024-06-04 15:21:19,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3347 conditions, 591 events. 283/591 cut-off events. For 75414/75414 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2893 event pairs, 84 based on Foata normal form. 6/596 useless extension candidates. Maximal degree in co-relation 3266. Up to 359 conditions per place. [2024-06-04 15:21:19,031 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 59 selfloop transitions, 22 changer transitions 23/106 dead transitions. [2024-06-04 15:21:19,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 106 transitions, 813 flow [2024-06-04 15:21:19,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:21:19,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:21:19,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 105 transitions. [2024-06-04 15:21:19,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29829545454545453 [2024-06-04 15:21:19,032 INFO L175 Difference]: Start difference. First operand has 185 places, 91 transitions, 573 flow. Second operand 11 states and 105 transitions. [2024-06-04 15:21:19,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 106 transitions, 813 flow [2024-06-04 15:21:19,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 106 transitions, 737 flow, removed 10 selfloop flow, removed 17 redundant places. [2024-06-04 15:21:19,148 INFO L231 Difference]: Finished difference. Result has 166 places, 78 transitions, 487 flow [2024-06-04 15:21:19,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=487, PETRI_PLACES=166, PETRI_TRANSITIONS=78} [2024-06-04 15:21:19,149 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 135 predicate places. [2024-06-04 15:21:19,149 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 78 transitions, 487 flow [2024-06-04 15:21:19,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:19,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:21:19,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:21:19,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-04 15:21:19,149 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 15:21:19,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:21:19,150 INFO L85 PathProgramCache]: Analyzing trace with hash -913143183, now seen corresponding path program 18 times [2024-06-04 15:21:19,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:21:19,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881319728] [2024-06-04 15:21:19,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:21:19,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:21:19,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:21:20,073 INFO 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 15:21:20,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:21:20,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881319728] [2024-06-04 15:21:20,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881319728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:21:20,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:21:20,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:21:20,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391165661] [2024-06-04 15:21:20,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:21:20,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:21:20,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:21:20,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:21:20,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:21:20,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:21:20,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 78 transitions, 487 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:20,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:21:20,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:21:20,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:21:20,379 INFO L124 PetriNetUnfolderBase]: 242/512 cut-off events. [2024-06-04 15:21:20,379 INFO L125 PetriNetUnfolderBase]: For 57480/57480 co-relation queries the response was YES. [2024-06-04 15:21:20,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2898 conditions, 512 events. 242/512 cut-off events. For 57480/57480 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2395 event pairs, 76 based on Foata normal form. 6/517 useless extension candidates. Maximal degree in co-relation 2826. Up to 307 conditions per place. [2024-06-04 15:21:20,383 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 50 selfloop transitions, 18 changer transitions 23/93 dead transitions. [2024-06-04 15:21:20,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 93 transitions, 701 flow [2024-06-04 15:21:20,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:21:20,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:21:20,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-06-04 15:21:20,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29261363636363635 [2024-06-04 15:21:20,384 INFO L175 Difference]: Start difference. First operand has 166 places, 78 transitions, 487 flow. Second operand 11 states and 103 transitions. [2024-06-04 15:21:20,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 93 transitions, 701 flow [2024-06-04 15:21:20,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 93 transitions, 635 flow, removed 11 selfloop flow, removed 17 redundant places. [2024-06-04 15:21:20,446 INFO L231 Difference]: Finished difference. Result has 146 places, 67 transitions, 412 flow [2024-06-04 15:21:20,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=412, PETRI_PLACES=146, PETRI_TRANSITIONS=67} [2024-06-04 15:21:20,446 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 115 predicate places. [2024-06-04 15:21:20,446 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 67 transitions, 412 flow [2024-06-04 15:21:20,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:20,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:21:20,447 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 15:21:20,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-04 15:21:20,447 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 15:21:20,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:21:20,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1023965703, now seen corresponding path program 19 times [2024-06-04 15:21:20,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:21:20,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094428842] [2024-06-04 15:21:20,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:21:20,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:21:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:21:21,626 INFO 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 15:21:21,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:21:21,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094428842] [2024-06-04 15:21:21,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094428842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:21:21,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:21:21,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:21:21,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683764683] [2024-06-04 15:21:21,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:21:21,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:21:21,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:21:21,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:21:21,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:21:21,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:21:21,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 67 transitions, 412 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:21,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:21:21,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:21:21,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:21:21,936 INFO L124 PetriNetUnfolderBase]: 207/443 cut-off events. [2024-06-04 15:21:21,936 INFO L125 PetriNetUnfolderBase]: For 40408/40408 co-relation queries the response was YES. [2024-06-04 15:21:21,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2458 conditions, 443 events. 207/443 cut-off events. For 40408/40408 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1980 event pairs, 34 based on Foata normal form. 6/448 useless extension candidates. Maximal degree in co-relation 2396. Up to 173 conditions per place. [2024-06-04 15:21:21,938 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 37 selfloop transitions, 26 changer transitions 17/82 dead transitions. [2024-06-04 15:21:21,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 82 transitions, 604 flow [2024-06-04 15:21:21,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:21:21,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:21:21,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 100 transitions. [2024-06-04 15:21:21,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2840909090909091 [2024-06-04 15:21:21,940 INFO L175 Difference]: Start difference. First operand has 146 places, 67 transitions, 412 flow. Second operand 11 states and 100 transitions. [2024-06-04 15:21:21,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 82 transitions, 604 flow [2024-06-04 15:21:22,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 82 transitions, 548 flow, removed 10 selfloop flow, removed 15 redundant places. [2024-06-04 15:21:22,004 INFO L231 Difference]: Finished difference. Result has 128 places, 60 transitions, 379 flow [2024-06-04 15:21:22,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=379, PETRI_PLACES=128, PETRI_TRANSITIONS=60} [2024-06-04 15:21:22,005 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 97 predicate places. [2024-06-04 15:21:22,005 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 60 transitions, 379 flow [2024-06-04 15:21:22,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:22,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:21:22,005 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 15:21:22,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-04 15:21:22,005 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 15:21:22,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:21:22,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1335325557, now seen corresponding path program 20 times [2024-06-04 15:21:22,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:21:22,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484094367] [2024-06-04 15:21:22,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:21:22,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:21:22,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:21:23,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:21:23,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:21:23,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484094367] [2024-06-04 15:21:23,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484094367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:21:23,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:21:23,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 15:21:23,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859747530] [2024-06-04 15:21:23,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:21:23,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 15:21:23,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:21:23,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 15:21:23,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-06-04 15:21:23,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:21:23,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 60 transitions, 379 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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 15:21:23,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:21:23,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:21:23,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:21:23,481 INFO L124 PetriNetUnfolderBase]: 186/400 cut-off events. [2024-06-04 15:21:23,481 INFO L125 PetriNetUnfolderBase]: For 27630/27630 co-relation queries the response was YES. [2024-06-04 15:21:23,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2157 conditions, 400 events. 186/400 cut-off events. For 27630/27630 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1748 event pairs, 64 based on Foata normal form. 6/405 useless extension candidates. Maximal degree in co-relation 2104. Up to 263 conditions per place. [2024-06-04 15:21:23,483 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 42 selfloop transitions, 20 changer transitions 12/76 dead transitions. [2024-06-04 15:21:23,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 76 transitions, 561 flow [2024-06-04 15:21:23,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:21:23,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:21:23,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 109 transitions. [2024-06-04 15:21:23,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2838541666666667 [2024-06-04 15:21:23,484 INFO L175 Difference]: Start difference. First operand has 128 places, 60 transitions, 379 flow. Second operand 12 states and 109 transitions. [2024-06-04 15:21:23,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 76 transitions, 561 flow [2024-06-04 15:21:23,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 76 transitions, 495 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-04 15:21:23,509 INFO L231 Difference]: Finished difference. Result has 117 places, 56 transitions, 336 flow [2024-06-04 15:21:23,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=336, PETRI_PLACES=117, PETRI_TRANSITIONS=56} [2024-06-04 15:21:23,510 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 86 predicate places. [2024-06-04 15:21:23,510 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 56 transitions, 336 flow [2024-06-04 15:21:23,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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 15:21:23,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:21:23,510 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 15:21:23,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-04 15:21:23,510 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 15:21:23,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:21:23,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1565852483, now seen corresponding path program 21 times [2024-06-04 15:21:23,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:21:23,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089162099] [2024-06-04 15:21:23,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:21:23,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:21:23,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:21:24,513 INFO 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 15:21:24,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:21:24,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089162099] [2024-06-04 15:21:24,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089162099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:21:24,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:21:24,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:21:24,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283964070] [2024-06-04 15:21:24,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:21:24,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:21:24,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:21:24,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:21:24,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:21:24,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:21:24,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 56 transitions, 336 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:24,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:21:24,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:21:24,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:21:24,844 INFO L124 PetriNetUnfolderBase]: 162/348 cut-off events. [2024-06-04 15:21:24,845 INFO L125 PetriNetUnfolderBase]: For 16368/16368 co-relation queries the response was YES. [2024-06-04 15:21:24,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1633 conditions, 348 events. 162/348 cut-off events. For 16368/16368 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1430 event pairs, 51 based on Foata normal form. 6/353 useless extension candidates. Maximal degree in co-relation 1586. Up to 210 conditions per place. [2024-06-04 15:21:24,846 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 38 selfloop transitions, 16 changer transitions 14/70 dead transitions. [2024-06-04 15:21:24,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 70 transitions, 502 flow [2024-06-04 15:21:24,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:21:24,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:21:24,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 100 transitions. [2024-06-04 15:21:24,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2840909090909091 [2024-06-04 15:21:24,847 INFO L175 Difference]: Start difference. First operand has 117 places, 56 transitions, 336 flow. Second operand 11 states and 100 transitions. [2024-06-04 15:21:24,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 70 transitions, 502 flow [2024-06-04 15:21:24,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 70 transitions, 454 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-04 15:21:24,864 INFO L231 Difference]: Finished difference. Result has 110 places, 50 transitions, 294 flow [2024-06-04 15:21:24,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=294, PETRI_PLACES=110, PETRI_TRANSITIONS=50} [2024-06-04 15:21:24,864 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 79 predicate places. [2024-06-04 15:21:24,864 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 50 transitions, 294 flow [2024-06-04 15:21:24,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:24,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:21:24,864 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 15:21:24,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-04 15:21:24,865 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 15:21:24,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:21:24,865 INFO L85 PathProgramCache]: Analyzing trace with hash 848179415, now seen corresponding path program 22 times [2024-06-04 15:21:24,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:21:24,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269609654] [2024-06-04 15:21:24,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:21:24,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:21:24,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:21:26,080 INFO 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 15:21:26,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:21:26,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269609654] [2024-06-04 15:21:26,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269609654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:21:26,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:21:26,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 15:21:26,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131039323] [2024-06-04 15:21:26,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:21:26,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 15:21:26,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:21:26,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 15:21:26,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-04 15:21:26,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:21:26,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 50 transitions, 294 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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 15:21:26,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:21:26,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:21:26,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:21:26,451 INFO L124 PetriNetUnfolderBase]: 142/312 cut-off events. [2024-06-04 15:21:26,451 INFO L125 PetriNetUnfolderBase]: For 13812/13812 co-relation queries the response was YES. [2024-06-04 15:21:26,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1464 conditions, 312 events. 142/312 cut-off events. For 13812/13812 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1241 event pairs, 49 based on Foata normal form. 6/317 useless extension candidates. Maximal degree in co-relation 1420. Up to 192 conditions per place. [2024-06-04 15:21:26,453 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 31 selfloop transitions, 18 changer transitions 14/65 dead transitions. [2024-06-04 15:21:26,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 65 transitions, 452 flow [2024-06-04 15:21:26,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:21:26,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:21:26,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 106 transitions. [2024-06-04 15:21:26,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2760416666666667 [2024-06-04 15:21:26,453 INFO L175 Difference]: Start difference. First operand has 110 places, 50 transitions, 294 flow. Second operand 12 states and 106 transitions. [2024-06-04 15:21:26,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 65 transitions, 452 flow [2024-06-04 15:21:26,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 65 transitions, 410 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-04 15:21:26,465 INFO L231 Difference]: Finished difference. Result has 102 places, 46 transitions, 273 flow [2024-06-04 15:21:26,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=273, PETRI_PLACES=102, PETRI_TRANSITIONS=46} [2024-06-04 15:21:26,466 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 71 predicate places. [2024-06-04 15:21:26,466 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 46 transitions, 273 flow [2024-06-04 15:21:26,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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 15:21:26,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:21:26,466 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 15:21:26,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-04 15:21:26,466 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 15:21:26,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:21:26,467 INFO L85 PathProgramCache]: Analyzing trace with hash 843710765, now seen corresponding path program 23 times [2024-06-04 15:21:26,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:21:26,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958756817] [2024-06-04 15:21:26,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:21:26,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:21:26,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:21:27,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:21:27,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:21:27,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958756817] [2024-06-04 15:21:27,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958756817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:21:27,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:21:27,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:21:27,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941155477] [2024-06-04 15:21:27,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:21:27,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:21:27,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:21:27,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:21:27,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:21:27,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:21:27,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 46 transitions, 273 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:27,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:21:27,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:21:27,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:21:27,689 INFO L124 PetriNetUnfolderBase]: 128/286 cut-off events. [2024-06-04 15:21:27,689 INFO L125 PetriNetUnfolderBase]: For 10748/10748 co-relation queries the response was YES. [2024-06-04 15:21:27,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1322 conditions, 286 events. 128/286 cut-off events. For 10748/10748 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1112 event pairs, 18 based on Foata normal form. 6/291 useless extension candidates. Maximal degree in co-relation 1282. Up to 120 conditions per place. [2024-06-04 15:21:27,691 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 28 selfloop transitions, 17 changer transitions 13/60 dead transitions. [2024-06-04 15:21:27,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 60 transitions, 419 flow [2024-06-04 15:21:27,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:21:27,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:21:27,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 97 transitions. [2024-06-04 15:21:27,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2755681818181818 [2024-06-04 15:21:27,692 INFO L175 Difference]: Start difference. First operand has 102 places, 46 transitions, 273 flow. Second operand 11 states and 97 transitions. [2024-06-04 15:21:27,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 60 transitions, 419 flow [2024-06-04 15:21:27,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 60 transitions, 375 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 15:21:27,701 INFO L231 Difference]: Finished difference. Result has 95 places, 41 transitions, 243 flow [2024-06-04 15:21:27,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=243, PETRI_PLACES=95, PETRI_TRANSITIONS=41} [2024-06-04 15:21:27,701 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 64 predicate places. [2024-06-04 15:21:27,701 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 41 transitions, 243 flow [2024-06-04 15:21:27,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:27,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:21:27,702 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 15:21:27,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-04 15:21:27,702 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 15:21:27,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:21:27,702 INFO L85 PathProgramCache]: Analyzing trace with hash 981633453, now seen corresponding path program 24 times [2024-06-04 15:21:27,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:21:27,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023178882] [2024-06-04 15:21:27,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:21:27,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:21:27,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:21:28,800 INFO 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 15:21:28,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:21:28,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023178882] [2024-06-04 15:21:28,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023178882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:21:28,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:21:28,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:21:28,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627749399] [2024-06-04 15:21:28,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:21:28,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:21:28,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:21:28,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:21:28,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:21:28,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:21:28,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 41 transitions, 243 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:28,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:21:28,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:21:28,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:21:29,119 INFO L124 PetriNetUnfolderBase]: 97/221 cut-off events. [2024-06-04 15:21:29,120 INFO L125 PetriNetUnfolderBase]: For 6542/6542 co-relation queries the response was YES. [2024-06-04 15:21:29,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 955 conditions, 221 events. 97/221 cut-off events. For 6542/6542 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 765 event pairs, 30 based on Foata normal form. 6/226 useless extension candidates. Maximal degree in co-relation 918. Up to 113 conditions per place. [2024-06-04 15:21:29,121 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 27 selfloop transitions, 11 changer transitions 15/55 dead transitions. [2024-06-04 15:21:29,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 55 transitions, 379 flow [2024-06-04 15:21:29,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:21:29,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:21:29,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 99 transitions. [2024-06-04 15:21:29,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28125 [2024-06-04 15:21:29,122 INFO L175 Difference]: Start difference. First operand has 95 places, 41 transitions, 243 flow. Second operand 11 states and 99 transitions. [2024-06-04 15:21:29,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 55 transitions, 379 flow [2024-06-04 15:21:29,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 55 transitions, 335 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-04 15:21:29,127 INFO L231 Difference]: Finished difference. Result has 87 places, 34 transitions, 190 flow [2024-06-04 15:21:29,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=190, PETRI_PLACES=87, PETRI_TRANSITIONS=34} [2024-06-04 15:21:29,127 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 56 predicate places. [2024-06-04 15:21:29,128 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 34 transitions, 190 flow [2024-06-04 15:21:29,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:29,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:21:29,128 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 15:21:29,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-04 15:21:29,128 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 15:21:29,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:21:29,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1563399687, now seen corresponding path program 25 times [2024-06-04 15:21:29,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:21:29,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608424197] [2024-06-04 15:21:29,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:21:29,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:21:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:21:30,210 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 15:21:30,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:21:30,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608424197] [2024-06-04 15:21:30,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608424197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:21:30,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:21:30,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:21:30,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136299885] [2024-06-04 15:21:30,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:21:30,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:21:30,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:21:30,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:21:30,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:21:30,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:21:30,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 34 transitions, 190 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:30,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:21:30,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:21:30,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:21:30,420 INFO L124 PetriNetUnfolderBase]: 78/184 cut-off events. [2024-06-04 15:21:30,420 INFO L125 PetriNetUnfolderBase]: For 4732/4732 co-relation queries the response was YES. [2024-06-04 15:21:30,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 777 conditions, 184 events. 78/184 cut-off events. For 4732/4732 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 591 event pairs, 28 based on Foata normal form. 6/189 useless extension candidates. Maximal degree in co-relation 744. Up to 95 conditions per place. [2024-06-04 15:21:30,421 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 22 selfloop transitions, 8 changer transitions 16/48 dead transitions. [2024-06-04 15:21:30,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 48 transitions, 312 flow [2024-06-04 15:21:30,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:21:30,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:21:30,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 97 transitions. [2024-06-04 15:21:30,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2755681818181818 [2024-06-04 15:21:30,422 INFO L175 Difference]: Start difference. First operand has 87 places, 34 transitions, 190 flow. Second operand 11 states and 97 transitions. [2024-06-04 15:21:30,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 48 transitions, 312 flow [2024-06-04 15:21:30,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 48 transitions, 278 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-04 15:21:30,425 INFO L231 Difference]: Finished difference. Result has 76 places, 28 transitions, 147 flow [2024-06-04 15:21:30,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=147, PETRI_PLACES=76, PETRI_TRANSITIONS=28} [2024-06-04 15:21:30,425 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 45 predicate places. [2024-06-04 15:21:30,425 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 28 transitions, 147 flow [2024-06-04 15:21:30,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:30,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:21:30,426 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 15:21:30,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-04 15:21:30,426 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 15:21:30,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:21:30,426 INFO L85 PathProgramCache]: Analyzing trace with hash -903525861, now seen corresponding path program 26 times [2024-06-04 15:21:30,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:21:30,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855059120] [2024-06-04 15:21:30,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:21:30,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:21:30,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:21:31,351 INFO 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 15:21:31,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:21:31,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855059120] [2024-06-04 15:21:31,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855059120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:21:31,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:21:31,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:21:31,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116399665] [2024-06-04 15:21:31,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:21:31,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:21:31,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:21:31,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:21:31,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:21:31,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:21:31,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 28 transitions, 147 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:31,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:21:31,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:21:31,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:21:31,562 INFO L124 PetriNetUnfolderBase]: 49/121 cut-off events. [2024-06-04 15:21:31,563 INFO L125 PetriNetUnfolderBase]: For 1940/1940 co-relation queries the response was YES. [2024-06-04 15:21:31,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 446 conditions, 121 events. 49/121 cut-off events. For 1940/1940 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 300 event pairs, 4 based on Foata normal form. 6/126 useless extension candidates. Maximal degree in co-relation 418. Up to 38 conditions per place. [2024-06-04 15:21:31,563 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 20 selfloop transitions, 8 changer transitions 11/41 dead transitions. [2024-06-04 15:21:31,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 41 transitions, 253 flow [2024-06-04 15:21:31,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:21:31,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:21:31,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 92 transitions. [2024-06-04 15:21:31,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26136363636363635 [2024-06-04 15:21:31,564 INFO L175 Difference]: Start difference. First operand has 76 places, 28 transitions, 147 flow. Second operand 11 states and 92 transitions. [2024-06-04 15:21:31,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 41 transitions, 253 flow [2024-06-04 15:21:31,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 41 transitions, 225 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-04 15:21:31,566 INFO L231 Difference]: Finished difference. Result has 66 places, 23 transitions, 114 flow [2024-06-04 15:21:31,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=114, PETRI_PLACES=66, PETRI_TRANSITIONS=23} [2024-06-04 15:21:31,566 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 35 predicate places. [2024-06-04 15:21:31,567 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 23 transitions, 114 flow [2024-06-04 15:21:31,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:31,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:21:31,567 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 15:21:31,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-04 15:21:31,567 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:21:31,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:21:31,567 INFO L85 PathProgramCache]: Analyzing trace with hash 352096557, now seen corresponding path program 27 times [2024-06-04 15:21:31,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:21:31,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276245054] [2024-06-04 15:21:31,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:21:31,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:21:31,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:21:32,527 INFO 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 15:21:32,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:21:32,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276245054] [2024-06-04 15:21:32,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276245054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:21:32,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:21:32,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:21:32,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057390172] [2024-06-04 15:21:32,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:21:32,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:21:32,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:21:32,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:21:32,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:21:32,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 15:21:32,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 23 transitions, 114 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:32,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:21:32,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 15:21:32,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:21:32,795 INFO L124 PetriNetUnfolderBase]: 21/61 cut-off events. [2024-06-04 15:21:32,795 INFO L125 PetriNetUnfolderBase]: For 514/514 co-relation queries the response was YES. [2024-06-04 15:21:32,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 61 events. 21/61 cut-off events. For 514/514 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 80 event pairs, 0 based on Foata normal form. 6/66 useless extension candidates. Maximal degree in co-relation 168. Up to 24 conditions per place. [2024-06-04 15:21:32,796 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2024-06-04 15:21:32,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 30 transitions, 158 flow [2024-06-04 15:21:32,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:21:32,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:21:32,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 84 transitions. [2024-06-04 15:21:32,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.23863636363636365 [2024-06-04 15:21:32,797 INFO L175 Difference]: Start difference. First operand has 66 places, 23 transitions, 114 flow. Second operand 11 states and 84 transitions. [2024-06-04 15:21:32,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 30 transitions, 158 flow [2024-06-04 15:21:32,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 30 transitions, 124 flow, removed 1 selfloop flow, removed 17 redundant places. [2024-06-04 15:21:32,798 INFO L231 Difference]: Finished difference. Result has 52 places, 0 transitions, 0 flow [2024-06-04 15:21:32,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=52, PETRI_TRANSITIONS=0} [2024-06-04 15:21:32,798 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 21 predicate places. [2024-06-04 15:21:32,798 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 0 transitions, 0 flow [2024-06-04 15:21:32,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:32,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-04 15:21:32,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-04 15:21:32,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-04 15:21:32,805 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-04 15:21:32,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-04 15:21:32,806 INFO L445 BasicCegarLoop]: Path program histogram: [55, 30, 27, 15, 11, 10, 10, 8, 6, 5, 5, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:21:32,808 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-04 15:21:32,808 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-04 15:21:32,812 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-04 15:21:32,812 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-04 15:21:32,813 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.06 03:21:32 BasicIcfg [2024-06-04 15:21:32,813 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-04 15:21:32,815 INFO L158 Benchmark]: Toolchain (without parser) took 387271.26ms. Allocated memory was 125.8MB in the beginning and 1.6GB in the end (delta: 1.5GB). Free memory was 82.4MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 409.9MB. Max. memory is 16.1GB. [2024-06-04 15:21:32,816 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 125.8MB. Free memory is still 91.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 15:21:32,816 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 125.8MB. Free memory was 88.5MB in the beginning and 87.8MB in the end (delta: 620.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-04 15:21:32,817 INFO L158 Benchmark]: CACSL2BoogieTranslator took 569.15ms. Allocated memory is still 125.8MB. Free memory was 82.4MB in the beginning and 48.9MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-06-04 15:21:32,817 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.29ms. Allocated memory is still 125.8MB. Free memory was 48.9MB in the beginning and 45.9MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-04 15:21:32,817 INFO L158 Benchmark]: Boogie Preprocessor took 64.54ms. Allocated memory is still 125.8MB. Free memory was 45.9MB in the beginning and 42.6MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-04 15:21:32,817 INFO L158 Benchmark]: RCFGBuilder took 715.78ms. Allocated memory is still 125.8MB. Free memory was 42.6MB in the beginning and 46.0MB in the end (delta: -3.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-06-04 15:21:32,817 INFO L158 Benchmark]: TraceAbstraction took 385862.53ms. Allocated memory was 125.8MB in the beginning and 1.6GB in the end (delta: 1.5GB). Free memory was 45.3MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 375.2MB. Max. memory is 16.1GB. [2024-06-04 15:21:32,818 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 125.8MB. Free memory is still 91.2MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.15ms. Allocated memory is still 125.8MB. Free memory was 88.5MB in the beginning and 87.8MB in the end (delta: 620.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 569.15ms. Allocated memory is still 125.8MB. Free memory was 82.4MB in the beginning and 48.9MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.29ms. Allocated memory is still 125.8MB. Free memory was 48.9MB in the beginning and 45.9MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.54ms. Allocated memory is still 125.8MB. Free memory was 45.9MB in the beginning and 42.6MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 715.78ms. Allocated memory is still 125.8MB. Free memory was 42.6MB in the beginning and 46.0MB in the end (delta: -3.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 385862.53ms. Allocated memory was 125.8MB in the beginning and 1.6GB in the end (delta: 1.5GB). Free memory was 45.3MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 375.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 805]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 806]: 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: 385.7s, OverallIterations: 215, TraceHistogramMax: 1, PathProgramHistogramMax: 55, EmptinessCheckTime: 0.0s, AutomataDifference: 209.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13692 SdHoareTripleChecker+Valid, 44.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11782 mSDsluCounter, 10035 SdHoareTripleChecker+Invalid, 38.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9042 mSDsCounter, 3283 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 79110 IncrementalHoareTripleChecker+Invalid, 82393 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3283 mSolverCounterUnsat, 993 mSDtfsCounter, 79110 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2430 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2412 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6042 ImplicationChecksByTransitivity, 60.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3432occurred in iteration=166, InterpolantAutomatonStates: 2185, 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, 1.4s SatisfiabilityAnalysisTime, 173.4s InterpolantComputationTime, 3788 NumberOfCodeBlocks, 3788 NumberOfCodeBlocksAsserted, 215 NumberOfCheckSat, 3573 ConstructedInterpolants, 0 QuantifiedInterpolants, 160156 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 215 InterpolantComputations, 215 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 15:21:32,849 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